Changeset 8047 in ntrip for branches/BNC_2.12/src/bnchelp.html


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Timestamp:
Sep 27, 2016, 4:13:46 PM (8 years ago)
Author:
stuerze
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documentation file is uptated

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  • branches/BNC_2.12/src/bnchelp.html

    r8032 r8047  
    1 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
    2 <p><img src="IMG/screenshot43.png"/></p>
    3 
    4 <h3>BKG Ntrip Client (BNC)<br>
    5 Version 2.12.0</h3>
    6 
    7 <p>
    8 Georg Weber<sup>(1)</sup>, Leo&scaron; Mervart<sup>(2)</sup>, Andrea St&uuml;rze<sup>(1)</sup>, Axel R&uuml;lke<sup>(1)</sup>, Dirk St&ouml;cker<sup>(3)</sup>
    9 <p>
    10 <sup>(1) Federal Agency for Cartography and Geodesy (BKG), Frankfurt, Germany</sup><br>
    11 <sup>(2) Czech Technical University (CTU), Department of Geomatics, Prague, Czech Republic</sup><br>
    12 <sup>(3) Alberding GmbH, Wildau, Germany</sup>
    13 <br><br>
    14 <b>Copyright</b><br>
    15 &copy;<sup>&nbsp;</sup> 2005-2016 Federal Agency for Cartography and Geodesy (BKG), Frankfurt, Germany
    16 <br><br>
    17 ISSN 1436-3445<br>
    18 ISBN 978-3-86482-083-0<br><br>
    19 <b>Citation<sup>&nbsp;</sup></b><br>
    20 To help justify funding the development of BNC,<sup>&nbsp;</sup>we kindly ask users to include a citation when applying the software results in a publication. We suggest:
    21 <br><br>
    22 Weber, G., L. Mervart, A. St&uuml;rze, A. R&uuml;lke and D. St&ouml;cker (2016):<br>
    23 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; BKG Ntrip Client, Version 2.12. Mitteilungen des Bundesamtes<br>
    24 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; f&uuml;r Kartographie und Geod&auml;sie, Vol. 49, Frankfurt am Main, 2016.
    25 <br><br>
    26 
    27 <b>Table of <a name="contents">Contents</b><br><br>
    28 <b>1.</b> <a href=#genInstruction><b>General Information</b></a><br><br>
    29 &nbsp; &nbsp; &nbsp; 1.1 <a href=#introPurpose>Purpose</a><br>
    30 &nbsp; &nbsp; &nbsp; 1.2 <a href=#introSystem>Supported GNSS</a><br>
    31 &nbsp; &nbsp; &nbsp; 1.3 <a href=#introFlow>Data Flow</a><br>
    32 &nbsp; &nbsp; &nbsp; 1.4 <a href=#introHandling>Handling</a><br>
    33 &nbsp; &nbsp; &nbsp; 1.5 <a href=#introInst>Installation</a><br>
    34 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 1.5.1 <a href=#introCompile>Compilation</a><br>
    35 &nbsp; &nbsp; &nbsp; 1.6 <a href=#introConf>Configuration</a><br>
    36 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 1.6.1 <a href=#introExamples>Examples</a><br>
    37 &nbsp; &nbsp; &nbsp; 1.7 <a href=#introLimit>Limitations</a><br>
    38 &nbsp; &nbsp; &nbsp; 1.8 <a href=#introLBack>Looking Back</a><br><br>
    39 <b>2.</b> <a href=#optsettings><b>Settings Details</b></a><br><br>
    40 &nbsp; &nbsp; &nbsp; 2.1 <a href=#topmenu><b>Top Menu Bar</b></a><br>
    41 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.1.1 <a href=#file>File</a><br>
    42 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.1.2 <a href=#help>Help</a><br>
    43 &nbsp; &nbsp; &nbsp; 2.2 <a href=#network><b>Network</b></a><br>
    44 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.2.1 <a href=#proxy>Proxy</a><br>
    45 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.2.2 <a href=#ssl>SSL</a><br>
    46 &nbsp; &nbsp; &nbsp; 2.3 <a href=#general><b>General</b></a><br>
    47 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.3.1 <a href=#genlog>Logfile</a><br>
    48 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.3.2 <a href=#genapp>Append Files</a><br>
    49 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.3.3 <a href=#genconf>Reread Configuration</a><br>
    50 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.3.4 <a href=#genstart>Auto Start</a><br>
    51 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.3.5 <a href=#rawout>Raw Output File</a><br>
    52 &nbsp; &nbsp; &nbsp; 2.4 <a href=#rinex><b>RINEX Observations</b></a><br>
    53 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.4.1 <a href=#rnxname>Filenames</a><br>
    54 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.4.2 <a href=#rnxdir>Directory</a><br>
    55 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.4.3 <a href=#rnxinterval>File Interval</a><br>
    56 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.4.4 <a href=#rnxsample>Sampling</a><br>
    57 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.4.5 <a href=#rnxskl>Skeleton Extension</a><br>
    58 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.4.6 <a href=#sklMandat>Skeleton Mandatory</a><br>
    59 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.4.7 <a href=#rnxscript>Script</a><br>
    60 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.4.8 <a href=#rnxvers2>Version 2</a><br>
    61 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.4.9 <a href=#rnxvers3>Version 3</a><br>
    62 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.4.10 <a href=#rnxvers3File>Version 3 Filenames</a><br>
    63 &nbsp; &nbsp; &nbsp; 2.5 <a href=#ephemeris><b>RINEX Ephemeris</b></a><br>
    64 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.5.1 <a href=#ephdir>Directory</a><br>
    65 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.5.2 <a href=#ephint>Interval</a><br>
    66 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.5.3 <a href=#ephport>Port</a><br>
    67 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.5.4 <a href=#ephvers>Version</a><br>
    68 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.5.5 <a href=#ephversFile>Version 3 Filenames</a><br>
    69 &nbsp; &nbsp; &nbsp; 2.6 <a href=#reqc><b>RINEX Editing & QC</b></a><br>
    70 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.6.1 <a href=#reqcact>Action</a><br>
    71 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.6.2 <a href=#reqcinp>Input Files</a><br>
    72 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.6.3 <a href=#reqcout>Output Files</a><br>
    73 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.6.4 <a href=#reqclog>Logfiles</a><br>
    74 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.6.5 <a href=#reqcplots>Plots for Signals</a><br>
    75 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.6.6 <a href=#reqcdir>Directory for Plots</a><br>
    76 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.6.7 <a href=#reqcedit>Set Edit Options</a><br>
    77 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.6.8 <a href=#reqccommand>Command Line, No Window</a><br>
    78 &nbsp; &nbsp; &nbsp; 2.7 <a href=#sp3comp><b>SP3 Comparison</b></a><br>
    79 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.7.1 <a href=#sp3input>Input SP3 Files</a><br>
    80 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.7.2 <a href=#sp3exclude>Exclude Satellites</a><br>
    81 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.7.3 <a href=#sp3log>Logfile</a><br>
    82 &nbsp; &nbsp; &nbsp; 2.8 <a href=#correct><b>Broadcast Corrections</b></a><br>
    83 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.8.1 <a href=#corrdir>Directory, ASCII</a><br>
    84 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.8.2 <a href=#corrint>Interval</a><br>
    85 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.8.3 <a href=#corrport>Port</a><br>
    86 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.8.4 <a href=#corrwait>Wait for Full Corr Epoch</a><br>
    87 &nbsp; &nbsp; &nbsp; 2.9 <a href=#syncout><b>Feed Engine</b></a><br>
    88 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.9.1 <a href=#syncport>Port</a><br>
    89 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.9.2 <a href=#syncwait>Wait for Full Obs Epoch</a><br>
    90 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.9.3 <a href=#syncsample>Sampling</a><br>
    91 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.9.4 <a href=#syncfile>File</a><br>
    92 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.9.5 <a href=#syncuport>Port (unsynchronized)</a><br>
    93 &nbsp; &nbsp; &nbsp; 2.10 <a href=#serial><b>Serial Output</b></a><br>
    94 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.10.1 <a href=#sermount>Mountpoint</a><br>
    95 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.10.2 <a href=#serport>Port Name</a><br>
    96 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.10.3 <a href=#serbaud>Baud Rate</a><br>
    97 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.10.4 <a href=#serflow>Flow Control</a><br>
    98 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.10.5 <a href=#serparity>Parity</a><br>
    99 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.10.6 <a href=#serdata>Data Bits</a><br>
    100 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.10.7 <a href=#serstop>Stop Bits</a><br>
    101 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.10.8 <a href=#serauto>NMEA</a><br>
    102 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.10.9 <a href=#serfile>File</a><br>
    103 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.10.10 <a href=#serheight>Height</a><br>
    104 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.10.11 <a href=#sersampl>Sampling</a><br>
    105 &nbsp; &nbsp; &nbsp; 2.11 <a href=#advnote><b>Outages</b></a><br>
    106 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.11.1. <a href=#obsrate>Observation Rate</a><br>
    107 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.11.2. <a href=#advfail>Failure Threshold</a><br>
    108 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.11.3. <a href=#advreco>Recovery Threshold</a><br>
    109 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.11.4. <a href=#advscript>Script</a><br>
    110 &nbsp; &nbsp; &nbsp; 2.12 <a href=#misc><b>Miscellaneous</b></a><br>
    111 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.12.1. <a href=#miscmount>Mountpoint</a><br>
    112 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.12.2. <a href=#miscperf>Log Latency</a><br>
    113 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.12.3. <a href=#miscscan>Scan RTCM</a><br>
    114 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.12.4. <a href=#miscport>Port</a><br>
    115 &nbsp; &nbsp; &nbsp; 2.13 <a href=#pppclient><b>PPP Client</b></a><br>
    116 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1 <a href=#pppInp><b>PPP (1): Input and Output</b></a><br>
    117 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.1 <a href=#pppdatasource>Data Source</a><br>
    118 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.2 <a href=#ppprnxobs>RINEX Observation File</a><br>
    119 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.3 <a href=#ppprnxnav>RINEX Navigation File</a><br>
    120 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.4 <a href=#pppcorrstream>Corrections Stream</a><br>
    121 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.5 <a href=#pppcorrfile>Corrections File</a><br>
    122 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.6 <a href=#pppantexfile>ANTEX File</a><br>
    123 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.7 <a href=#pppmarkcoor>Coordinates File</a><br>
    124 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.8 <a href=#pppv3filename>Version 3 Filenames</a><br>
    125 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.9 <a href=#ppplogfile>Logfile Directory</a><br>
    126 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.10 <a href=#pppnmeafile>NMEA Directory</a><br>
    127 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.11 <a href=#pppsnxtrofile>SNX TRO Directory</a><br>
    128 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.11.1 <a href=#pppsnxtrointr>Interval</a><br>
    129 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.11.2 <a href=#pppsnxtrosampl>Sampling</a><br>
    130 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.11.3 <a href=#pppsnxAc>Analysis Center</a><br>
    131 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.1.11.4 <a href=#pppsnxSol>Solution ID</a><br>
    132 
    133 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.2 <a href=#pppStation><b>PPP (2): Processed Stations</b></a><br>
    134 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.2.1 <a href=#pppsite>Station</a><br>
    135 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.2.2 <a href=#pppnehsigma>Sigma North/East/Up</a><br>
    136 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.2.3 <a href=#pppnehnoise>Noise North/East/Up</a><br>
    137 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.2.4 <a href=#ppptropsigma>Tropo Sigma</a><br>
    138 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.2.5 <a href=#ppptropnoise>Tropo Noise</a><br>
    139 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.2.6 <a href=#pppnmeaport>NMEA Port</a><br>
    140 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.3 <a href=#pppOptions><b>PPP (3): Processing Options</b></a><br>
    141 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.3.1 <a href=#ppplinecombi>Linear Combinations</a><br>
    142 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.3.2 <a href=#pppcodeobs>Code Observations</a><br>
    143 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.3.3 <a href=#pppphaseobs>Phase Observations</a><br>
    144 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.3.4 <a href=#pppeleweight>Elevation Dependent Weighting</a><br>
    145 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.3.5 <a href=#pppminobs>Minimum Number of Observations</a><br>
    146 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.3.6 <a href=#pppmineleva>Minimum Elevation</a><br>
    147 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.3.7 <a href=#pppwaitclockcorr>Wait for Clock Corrections</a><br>
    148 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.3.8 <a href=#pppseeding>Seeding</a><br>
    149 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.4 <a href=#pppPlots><b>PPP (4): Plots</b></a><br>
    150 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.4.1 <a href=#ppptimeseries>PPP Plot</a><br>
    151 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.4.2 <a href=#pppaudioresp>Audio Response</a><br>
    152 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.4.3 <a href=#ppptrackmap>Track Map</a><br>
    153 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.4.3.1 <a href=#pppmaptype>Google/OSM</a><br>
    154 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.4.4 <a href=#pppdotprop>Dot-properties</a><br>
    155 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.4.4.1 <a href=#pppdotsize>Size</a><br>
    156 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.4.4.2 <a href=#pppdotcolor>Color</a><br>
    157 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.13.4.5 <a href=#pppspeed>Post Processing Speed</a><br>
    158 &nbsp; &nbsp; &nbsp; 2.14 <a href=#combi><b>Combine Corrections</b></a><br>
    159 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.14.1 <a href=#combimounttab>Combine Corrections Table</a><br>
    160 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.14.1.1 <a href=#combiadd>Add Row, Delete</a><br>
    161 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.14.1.2 <a href=#combimethod>Method</a><br>
    162 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.14.1.3 <a href=#combimax>Maximal Residuum</a><br>
    163 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.14.1.4 <a href=#combismpl>Sampling</a><br>
    164 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.14.1.5 <a href=#combiGLO>Use GLONASS</a><br>
    165 &nbsp; &nbsp; &nbsp; 2.15 <a href=#upclk><b>Upload Corrections</b></a><br>
    166 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.1 <a href=#upadd>Add, Delete Row</a><br>
    167 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.2 <a href=#uphost>Host, Port, Mountpoint, Password</a><br>
    168 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.3 <a href=#upsystem>System</a><br>
    169 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.4 <a href=#upcom>Center of Mass</a><br>
    170 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.5 <a href=#upsp3>SP3 File</a><br>
    171 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.6 <a href=#uprinex>RNX File</a><br>
    172 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.7 <a href=#pidsidiod>PID, SID, IOD</a><br>
    173 
    174 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.8 <a href=#upinter>Interval</a><br>
    175 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.9 <a href=#upclksmpl>Sampling</a><br>
    176 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.9.1 <a href=#upclkorb>Orbits</a><br>
    177 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.9.2 <a href=#upclksp3>SP3</a><br>
    178 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.9.3 <a href=#upclkrnx>RINEX</a><br>
    179 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.10 <a href=#upcustom>Custom Trafo</a><br>
    180 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.15.11 <a href=#upantex>ANTEX File</a><br>
    181 &nbsp; &nbsp; &nbsp; 2.16 <a href=#upeph><b>Upload Ephemeris</b></a><br>
    182 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.16.1 <a href=#brdcserver>Host &amp; Port</a><br>
    183 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.16.2 <a href=#brdcmount>Mountpoint &amp; Password</a><br>
    184 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.16.3 <a href=#brdcsmpl>Sampling</a><br>
    185 &nbsp; &nbsp; &nbsp; 2.17 <a href=#streams><b>Streams Canvas</b></a><br>
    186 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.17.1 <a href=#streamedit>Edit Streams</a><br>
    187 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.17.2 <a href=#streamdelete>Delete Stream</a><br>
    188 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.17.3 <a href=#streamconf>Reconfigure Stream Selection On-the-fly</a><br>
    189 &nbsp; &nbsp; &nbsp; 2.18 <a href=#logs><b>Logging Canvas</b></a><br>
    190 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.18.1 <a href=#logfile>Log</a><br>
    191 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.18.2 <a href=#throughput>Throughput</a><br>
    192 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.18.3 <a href=#latency>Latency</a><br>
    193 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.18.4 <a href=#ppptab>PPP Plot</a><br>
    194 &nbsp; &nbsp; &nbsp; 2.19 <a href=#bottom><b>Bottom Menu Bar</b></a><br>
    195 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.1 <a href=#streamadd>Add Stream</a><br>
    196 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.1.1 <a href=#streamcaster>Add Stream - Coming from Caster</a><br>
    197 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.1.1.1 <a href=#streamhost>Caster Host and Port</a><br>
    198 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.1.1.2 <a href=#streamtable>Casters Table</a><br>
    199 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.1.1.3 <a href=#streamuser>User and Password</a><br>
    200 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.1.1.4 <a href=#gettable>Get Table</a><br>
    201 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.1.1.5 <a href=#ntripv>Ntrip Version</a><br>
    202 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.1.1.6 <a href=#castermap>Map</a><br>
    203 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.1.2 <a href=#streamip>Add Stream - Coming from TCP/IP Port</a><br>
    204 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.1.3 <a href=#streamudp>Add Stream - Coming from UDP Port</a><br>
    205 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.1.4 <a href=#streamser>Add Stream - Coming from Serial Port</a><br>
    206 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.2 <a href=#streamsdelete>Delete Stream</a><br>
    207 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.3 <a href=#streamsmap>Map</a><br>
    208 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.4 <a href=#start>Start</a><br>
    209 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.5 <a href=#stop>Stop</a><br>
    210 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.19.6 <a href=#contexthelp>Help? = Shift+F1</a><br>
    211 &nbsp; &nbsp; &nbsp; 2.20 <a href=#cmd><b>Command Line Options</b></a><br>
    212 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.20.1 <a href=#cmdVersion>Version</a><br>
    213 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.20.2 <a href=#cmdDisplay>Display</a><br>
    214 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.20.3 <a href=#nw>No Window Mode</a><br>
    215 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.20.4 <a href=#post>File Mode</a><br>
    216 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.20.5 <a href=#conffile>Configuration File</a><br>
    217 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.20.6 <a href=#confopt>Configuration Options</a><br><br>
    218 <b>3.</b> <a href=#annex><b>Annex</b></a><br><br>
    219 &nbsp; &nbsp; &nbsp; 3.1 <a href=#history>Revision History</a><br>
    220 &nbsp; &nbsp; &nbsp; 3.2 <a href=#rtcm>RTCM Standards</a><br>
    221 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 3.2.1 <a href=#ntrip1>Ntrip Version 1</a><br>
    222 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 3.2.2 <a href=#ntrip2>Ntrip Version 2</a><br>
    223 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 3.2.3 <a href=#rtcm2>RTCM Version 2</a><br>
    224 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 3.2.4 <a href=#rtcm3>RTCM Version 3</a><br>
    225 &nbsp; &nbsp; &nbsp; 3.3 <a href=#confList>Command Line Help</a><br>
    226 &nbsp; &nbsp; &nbsp; 3.4 <a href=#links>Further Reading</a><br>
    227 &nbsp; &nbsp; &nbsp; 3.5 <a href=#abbrev>Abbreviations</a>
    228 </p>
    2291
    2302
    231 <p><b>List of Figures</b><br><br>
    232 <table>
    233 <tr><td><b>Fig.&nbsp;&nbsp;</b></td><td><b>Title</b></td><td><b>Chapter</b></td></tr>
    234 <tr><td>1</td><td>Flowchart, BNC connected to a GNSS rover for Precise Point Positioning</b></td><td>1.3</td></tr>
    235 <tr><td>2</td><td>Flowchart, BNC converting RTCM streams to RINEX batches</td><td>1.3</td></tr>
    236 <tr><td>3</td><td>Flowchart, BNC feeding a real-time GNSS engine and uploading encoded Broadcast Corrections</td><td>1.3</td></tr>
    237 <tr><td>4</td><td>Flowchart, BNC combining Broadcast Correction streams</td><td>1.3</td></tr>
    238 <tr><td>5</td><td>Sections on BNC's main window</td><td>1.4</td></tr>
    239 <tr><td>6</td><td>Management of configuration options in BNC</td><td>1.6</td></tr>
    240 <tr><td>7</td><td>BNC's 'Network' panel configured to ignore eventually occurring SSL error messages</td><td>2.2.2</td></tr>
    241 <tr><td>8</td><td>BNC translating incoming streams to 15 min RINEX Version 3 files</td><td>2.4</td></tr>
    242 <tr><td>9</td><td>BNC converting Broadcast Ephemeris stream to RINEX Version 3 Navigation files</td><td>2.5.5</td></tr>
    243 <tr><td>10</td><td>Example for BNC's 'RINEX Editing Options' window</td><td>2.6.7</td></tr>
    244 <tr><td>11</td><td>Example for RINEX file concatenation with BNC</td><td>2.6.7</td></tr>
    245 <tr><td>12</td><td>Example for creating RINEX quality check analysis graphics output with BNC</td><td>2.6.7</td></tr>
    246 <tr><td>13</td><td>Example for satellite availability, elevation and PDOP plots as a result of a RINEX quality check analysis with BNC</td><td>2.6.7</td></tr>
    247 <tr><td>14</td><td>Sky plot examples for multipath, part of RINEX quality check analysis with BNC</td><td>2.6.7</td></tr>
    248 <tr><td>15</td><td>Sky plot examples for signal-to-noise ratio, part of RINEX quality check analysis with BNC</td><td>2.6.7</td></tr>
    249 <tr><td>16</td><td>Example for comparing two SP3 files with satellite orbit and clock data using BNC</td><td>2.7.3</td></tr>
    250 <tr><td>17</td><td>Example for pulling, saving and output of Broadcast Corrections using BNC</td><td>2.8.3</td></tr>
    251 <tr><td>18</td><td>Synchronized BNC output via IP port to feed a GNSS real-time engine</td><td>2.9</td></tr>
    252 <tr><td>19</td><td>Flowcharts, BNC forwarding a stream to a serially connected receiver; sending NMEA sentences is mandatory for VRS streams</td><td>2.10</td></tr>
    253 <tr><td>20</td><td>BNC pulling a VRS stream to feed a serially connected RTK rover</td><td>2.10</td></tr>
    254 <tr><td>21</td><td>RTCM message numbers, latencies and observation types logged by BNC</td><td>2.12</td></tr>
    255 <tr><td>22</td><td>Real-time Precise Point Positioning with BNC, PPP Panel 1</td><td>2.13.1</td></tr>
    256 <tr><td>23</td><td>Precise Point Positioning with BNC, PPP Panel 2, using RTKPLOT for visualization</td><td>2.13.2</td></tr>
    257 <tr><td>24</td><td>Precise Point Positioning with BNC, PPP Panel 3</td><td>2.13.3</td></tr>
    258 <tr><td>25</td><td>Precise Point Positioning with BNC in 'Quick-Start' mode, PPP Panel 4</td><td>2.13.3.8</td></tr>
    259 <tr><td>26</td><td>Track of positions from BNC with Google Maps in background</td><td>2.13.4.3</td></tr>
    260 <tr><td>27</td><td>Example for background map from Google Maps and OpenStreetMap (OSM) resources</td><td>2.13.4.3.1</td></tr>
    261 <tr><td>28</td><td>BNC combining Broadcast Correction streams</td><td>2.14</td></tr>
    262 <tr><td>29</td><td>INTERNAL' PPP with BNC using a combination of Broadcast Corrections</td><td>2.14</td></tr>
    263 <tr><td>30</td><td>Setting BNC's Custom Transformation Parameters window, example for 'ITRF2008->GDA94'</td><td>2.15.3</td></tr>
    264 <tr><td>31</td><td>BNC producing Broadcast Corrections from incoming precise orbits and clocks and uploading them to an Ntrip Broadcaster</td><td>2.15.11</td></tr>
    265 <tr><td>32</td><td>BNC uploading a combined Broadcast Correction stream</td><td>2.15.11</td></tr>
    266 <tr><td>33</td><td>BNC producing Broadcast Ephemeris stream from globally distributed RTCM streams; upload in RTCM format to an Ntrip Broadcaster</td><td>2.16.3</td></tr>
    267 <tr><td>34</td><td>Bandwidth consumption of RTCM streams received by BNC</td><td>2.18.2</td></tr>
    268 <tr><td>35</td><td>Latency of RTCM streams received by BNC</td><td>2.18.3</td></tr>
    269 <tr><td>36</td><td>Example for time series plot of displacements produced by BNC</td><td>2.18.4</td></tr>
    270 <tr><td>37</td><td>Steam input communication links accepted by BNC</td><td>2.19</td></tr>
    271 <tr><td>38</td><td>BNC's 'Select Broadcaster' table</td><td>2.19.1.1.2</td></tr>
    272 <tr><td>39</td><td>Broadcaster source-table shown by BNC</td><td>2.19.1.1.4</td></tr>
    273 <tr><td>40</td><td>Stream distribution map shown by BNC as derived from Ntrip Broadcaster source-table</td><td>2.19.1.1.6</td></tr>
    274 <tr><td>41</td><td>BNC configuration for pulling a stream via serial port</td><td>2.19.1.4</td></tr>
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     121<h1>Welcome to BNC&#8217;s documentation!<a class="headerlink" href="#welcome-to-bnc-s-documentation" title="Permalink to this headline">¶</a></h1>
     122<p>Contents:</p>
     123<div class="toctree-wrapper compound" id="mastertoc">
     124<span id="document-abbreviations"></span><span class="target" id="index-0"></span><span class="target" id="index-1"></span><span class="target" id="index-2"></span><span class="target" id="index-3"></span><span class="target" id="index-4"></span><span class="target" id="index-5"></span><span class="target" id="index-6"></span><span class="target" id="index-7"></span><span class="target" id="index-8"></span><span class="target" id="index-9"></span><span class="target" id="index-10"></span><span class="target" id="index-11"></span><span class="target" id="index-12"></span><span class="target" id="index-13"></span><span class="target" id="index-14"></span><span class="target" id="index-15"></span><span class="target" id="index-16"></span><span class="target" id="index-17"></span><span class="target" id="index-18"></span><span class="target" id="index-19"></span><span class="target" id="index-20"></span><span class="target" id="index-21"></span><span class="target" id="index-22"></span><span class="target" id="index-23"></span><span class="target" id="index-24"></span><span class="target" id="index-25"></span><span class="target" id="index-26"></span><span class="target" id="index-27"></span><span class="target" id="index-28"></span><span class="target" id="index-29"></span><span class="target" id="index-30"></span><span class="target" id="index-31"></span><span class="target" id="index-32"></span><span class="target" id="index-33"></span><span class="target" id="index-34"></span><span class="target" id="index-35"></span><span class="target" id="index-36"></span><span class="target" id="index-37"></span><span class="target" id="index-38"></span><span class="target" id="index-39"></span><span class="target" id="index-40"></span><span class="target" id="index-41"></span><span class="target" id="index-42"></span><span class="target" id="index-43"></span><span class="target" id="index-44"></span><span class="target" id="index-45"></span><span class="target" id="index-46"></span><span class="target" id="index-47"></span><span class="target" id="index-48"></span><span class="target" id="index-49"></span><span class="target" id="index-50"></span><span class="target" id="index-51"></span><span class="target" id="index-52"></span><span class="target" id="index-53"></span><span class="target" id="index-54"></span><span class="target" id="index-55"></span><span class="target" id="index-56"></span><span class="target" id="index-57"></span><span class="target" id="index-58"></span><span class="target" id="index-59"></span><span class="target" id="index-60"></span><span class="target" id="index-61"></span><span class="target" id="index-62"></span><span class="target" id="index-63"></span><span class="target" id="index-64"></span><span class="target" id="index-65"></span><span class="target" id="index-66"></span><span class="target" id="index-67"></span><span class="target" id="index-68"></span><span class="target" id="index-69"></span><span class="target" id="index-70"></span><span class="target" id="index-71"></span><span class="target" id="index-72"></span><span class="target" id="index-73"></span><span class="target" id="index-74"></span><span class="target" id="index-75"></span><span class="target" id="index-76"></span><span class="target" id="index-77"></span><span class="target" id="index-78"></span><span class="target" id="index-79"></span><span class="target" id="index-80"></span><span class="target" id="index-81"></span><span class="target" id="index-82"></span><span class="target" id="index-83"></span><span class="target" id="index-84"></span><span class="target" id="index-85"></span><span class="target" id="index-86"></span><span class="target" id="index-87"></span><span class="target" id="index-88"></span><div class="section" id="abbreviations">
     125<span id="index-89"></span><h2>Abbreviations<a class="headerlink" href="#abbreviations" title="Permalink to this headline">¶</a></h2>
     126<table border="1" class="docutils">
     127<colgroup>
     128<col width="13%" />
     129<col width="87%" />
     130</colgroup>
     131<tbody valign="top">
     132<tr class="row-odd"><td>AC</td>
     133<td>Analysis Center</td>
     134</tr>
     135<tr class="row-even"><td>AFREF</td>
     136<td>IAG Reference Frame Sub-Commission for Africa</td>
     137</tr>
     138<tr class="row-odd"><td>ANTEX</td>
     139<td>Antenna Exchange Format</td>
     140</tr>
     141<tr class="row-even"><td>APC</td>
     142<td>Antenna Phase Center</td>
     143</tr>
     144<tr class="row-odd"><td>APREF</td>
     145<td>IAG Reference Frame Sub-Commission for Asia and Pacific</td>
     146</tr>
     147<tr class="row-even"><td>ARP</td>
     148<td>Antenna Reference Point</td>
     149</tr>
     150<tr class="row-odd"><td>BKG</td>
     151<td>Bundesamt für Kartographie und Geodäsie</td>
     152</tr>
     153<tr class="row-even"><td>BNC</td>
     154<td>BNK Ntrip Client</td>
     155</tr>
     156<tr class="row-odd"><td>BSW</td>
     157<td>Bernese GNSS Software</td>
     158</tr>
     159<tr class="row-even"><td>CC</td>
     160<td>Combination Center</td>
     161</tr>
     162<tr class="row-odd"><td>CLI</td>
     163<td>Command Line Interface</td>
     164</tr>
     165<tr class="row-even"><td>CoM</td>
     166<td>Center Of Mass</td>
     167</tr>
     168<tr class="row-odd"><td>DGNSS</td>
     169<td>Differential GNSS</td>
     170</tr>
     171<tr class="row-even"><td>DGPS-IP</td>
     172<td>Differential GPS via Internet Protocol</td>
     173</tr>
     174<tr class="row-odd"><td>DMG</td>
     175<td>Disk Image, File</td>
     176</tr>
     177<tr class="row-even"><td>DREF91</td>
     178<td>Geodetic Datum for Germany 1991</td>
     179</tr>
     180<tr class="row-odd"><td>ECEF</td>
     181<td>Earth-Centred-Earth-Fixed</td>
     182</tr>
     183<tr class="row-even"><td>EDGE</td>
     184<td>Enhanced Data Rates for GSM Evolution</td>
     185</tr>
     186<tr class="row-odd"><td>ETRF2000</td>
     187<td>European Terrestrial Reference Frame 2000</td>
     188</tr>
     189<tr class="row-even"><td>EUREF</td>
     190<td>IAG Reference Frame Sub-Commission for Europe</td>
     191</tr>
     192<tr class="row-odd"><td>EoE</td>
     193<td>End of Epoch</td>
     194</tr>
     195<tr class="row-even"><td>FKP</td>
     196<td>Flächen-Korrektur-Parameter</td>
     197</tr>
     198<tr class="row-odd"><td>FTP</td>
     199<td>File Transfer Protocol</td>
     200</tr>
     201<tr class="row-even"><td>GDA94</td>
     202<td>Geodetic Datum Australia 1994</td>
     203</tr>
     204<tr class="row-odd"><td>GM</td>
     205<td>Google Maps</td>
     206</tr>
     207<tr class="row-even"><td>GNSS</td>
     208<td>Global Navigation Satellite System</td>
     209</tr>
     210<tr class="row-odd"><td>GNU</td>
     211<td>GNU&#8217;s Not Unix</td>
     212</tr>
     213<tr class="row-even"><td>GPL</td>
     214<td>General Public License</td>
     215</tr>
     216<tr class="row-odd"><td>GPRS</td>
     217<td>General Packet Radio Service</td>
     218</tr>
     219<tr class="row-even"><td>GPSWD</td>
     220<td>GPS Week and Day</td>
     221</tr>
     222<tr class="row-odd"><td>GSM</td>
     223<td>Global System for Mobile Communications</td>
     224</tr>
     225<tr class="row-even"><td>GUI</td>
     226<td>Graphical User Interface</td>
     227</tr>
     228<tr class="row-odd"><td>HP MSM</td>
     229<td>High Precision Multiple Signal Messages</td>
     230</tr>
     231<tr class="row-even"><td>HR URA</td>
     232<td>High Rate User Range Accuracy</td>
     233</tr>
     234<tr class="row-odd"><td>HTTP</td>
     235<td>Hypertext Transfer Protocol</td>
     236</tr>
     237<tr class="row-even"><td>HTTPS</td>
     238<td>Hypertext Transfer Protocol Secure</td>
     239</tr>
     240<tr class="row-odd"><td>IAG</td>
     241<td>International Association of Geodesy</td>
     242</tr>
     243<tr class="row-even"><td>ICECAST</td>
     244<td>Streaming Media Server</td>
     245</tr>
     246<tr class="row-odd"><td>IGS08</td>
     247<td>IGS Reference Frame 2008</td>
     248</tr>
     249<tr class="row-even"><td>IGS</td>
     250<td>International GNSS Service</td>
     251</tr>
     252<tr class="row-odd"><td>IOD</td>
     253<td>Issue of Data</td>
     254</tr>
     255<tr class="row-even"><td>IP</td>
     256<td>Internet Protocol</td>
     257</tr>
     258<tr class="row-odd"><td>ITRF2008</td>
     259<td>International Terrestrial Reference Frame 2008</td>
     260</tr>
     261<tr class="row-even"><td>L3</td>
     262<td>Ionosphere-Free Linear Combination Of Phase Observations</td>
     263</tr>
     264<tr class="row-odd"><td>LAN</td>
     265<td>Local Area Network</td>
     266</tr>
     267<tr class="row-even"><td>LC</td>
     268<td>Linea Combination</td>
     269</tr>
     270<tr class="row-odd"><td>M-GEX</td>
     271<td>Multi GNSS-Experiment</td>
     272</tr>
     273<tr class="row-even"><td>MAC</td>
     274<td>Master Auxiliary Concept</td>
     275</tr>
     276<tr class="row-odd"><td>MJD</td>
     277<td>Modified Julian Date</td>
     278</tr>
     279<tr class="row-even"><td>MSI</td>
     280<td>Microsoft Installer, File</td>
     281</tr>
     282<tr class="row-odd"><td>MSM</td>
     283<td>Multiple Signal Messages</td>
     284</tr>
     285<tr class="row-even"><td>MW</td>
     286<td>Melbourne W&#8221;ubbena Linear Combination</td>
     287</tr>
     288<tr class="row-odd"><td>NAD83</td>
     289<td>North American Datum 1983</td>
     290</tr>
     291<tr class="row-even"><td>NAREF</td>
     292<td>IAG Reference Frame Sub-Commission for North America</td>
     293</tr>
     294<tr class="row-odd"><td>NMEA</td>
     295<td>National Marine Electronics Association Format</td>
     296</tr>
     297<tr class="row-even"><td>Ntrip</td>
     298<td>Networked Transport of RTCM via Internet Protocol</td>
     299</tr>
     300<tr class="row-odd"><td>OSM</td>
     301<td>OpenStreetMap</td>
     302</tr>
     303<tr class="row-even"><td>OSR</td>
     304<td>Observation Space Representation</td>
     305</tr>
     306<tr class="row-odd"><td>P3</td>
     307<td>Ionosphere-Free Linear Combination Of Code Observations</td>
     308</tr>
     309<tr class="row-even"><td>PDOP</td>
     310<td>Positional Dilution Of Precision</td>
     311</tr>
     312<tr class="row-odd"><td>PNG</td>
     313<td>Portable Network Graphics</td>
     314</tr>
     315<tr class="row-even"><td>PPP</td>
     316<td>Precise Point Positioning</td>
     317</tr>
     318<tr class="row-odd"><td>Qt</td>
     319<td>Cross-Platform Application Framework</td>
     320</tr>
     321<tr class="row-even"><td>REQC</td>
     322<td>RINEX Editing and Quality Checking</td>
     323</tr>
     324<tr class="row-odd"><td>RINEX</td>
     325<td>Receiver Independent Exchange Format</td>
     326</tr>
     327<tr class="row-even"><td>RTCM SC-104</td>
     328<td>Radio Technical Commission for Maritime Services, Special Committee 104</td>
     329</tr>
     330<tr class="row-odd"><td>RTK</td>
     331<td>Real Time Kinematic</td>
     332</tr>
     333<tr class="row-even"><td>RTKPLOT</td>
     334<td>View and Plot Positioning Solutions Software, Part of RTKLIB</td>
     335</tr>
     336<tr class="row-odd"><td>RTNET</td>
     337<td>Real-Time Network Format</td>
     338</tr>
     339<tr class="row-even"><td>RTP</td>
     340<td>Real-Time Transport Protocol</td>
     341</tr>
     342<tr class="row-odd"><td>RTSP</td>
     343<td>Real-Time Streaming Protocol</td>
     344</tr>
     345<tr class="row-even"><td>SBAS</td>
     346<td>Space Based Augmentation System</td>
     347</tr>
     348<tr class="row-odd"><td>SINEX TRO</td>
     349<td>Troposphere Solution Independent Exchange Format</td>
     350</tr>
     351<tr class="row-even"><td>SINEX</td>
     352<td>Solution Independent Exchange Format</td>
     353</tr>
     354<tr class="row-odd"><td>SIRGAS2000</td>
     355<td>Geodetic Datum for Latin America and Caribbean 2000</td>
     356</tr>
     357<tr class="row-even"><td>SIRGAS95</td>
     358<td>Geodetic Datum for Latin America and Caribbean 1995</td>
     359</tr>
     360<tr class="row-odd"><td>SIRGAS</td>
     361<td>IAG Reference Frame Sub-Commission for Latin America and Caribbean</td>
     362</tr>
     363<tr class="row-even"><td>SP3</td>
     364<td>Standard Product # 3</td>
     365</tr>
     366<tr class="row-odd"><td>SPP</td>
     367<td>Single Point Positioning</td>
     368</tr>
     369<tr class="row-even"><td>SSL</td>
     370<td>Secure Sockets Layer</td>
     371</tr>
     372<tr class="row-odd"><td>SSR</td>
     373<td>State Space Representation</td>
     374</tr>
     375<tr class="row-even"><td>SVN</td>
     376<td>Subversion, Revision Control System</td>
     377</tr>
     378<tr class="row-odd"><td>TCP</td>
     379<td>Transmission Control Protocol</td>
     380</tr>
     381<tr class="row-even"><td>TEQC</td>
     382<td>Translation, Editing and Quality Checking</td>
     383</tr>
     384<tr class="row-odd"><td>TLS</td>
     385<td>Transport Layer Security</td>
     386</tr>
     387<tr class="row-even"><td>UDP</td>
     388<td>User Datagram Protocol</td>
     389</tr>
     390<tr class="row-odd"><td>UMTS</td>
     391<td>Universal Mobile Telecommunications System</td>
     392</tr>
     393<tr class="row-even"><td>URA</td>
     394<td>User Range Accuracy</td>
     395</tr>
     396<tr class="row-odd"><td>VRS</td>
     397<td>Virtual Reference Station</td>
     398</tr>
     399<tr class="row-even"><td>VTEC</td>
     400<td>Vertical Total Electron Content</td>
     401</tr>
     402</tbody>
    275403</table>
    276 </p>
    277 
    278 <p><b>List of Tables</b><br><br>
    279 <table>
    280 <tr><td><b>Tab.&nbsp;&nbsp;</b></td><td><b>Title</b></td><td><b>Chapter</b></td></tr>
    281 <tr><td>1</td><td>Status of RTCM Version 3 message implementations in BNC supporting various GNSS systems</td><td>1.2</td></tr>
    282 <tr><td>2</td><td>Contents and format of synchronized output of observations feeding a GNSS engine</td><td>2.9</td></tr>
    283 </table>
    284 </p>
    285 
    286 <p><h3>1. <a name="genInstruction">General Information</h3></p>
    287 <p>
    288 The BKG Ntrip Client (BNC) is a program for simultaneously retrieving, decoding, converting and processing or analyzing real-time GNSS data streams applying the 'Networked Transport of RTCM via Internet Protocol' (Ntrip) standard. It has been developed within the framework of the IAG sub-commission for Europe (EUREF) and the International GNSS Service (IGS). Although meant to be a real-time tool, it comes with some post processing functionality. It can be used for data coming from Ntrip Broadcasters like
    289 <ul>
    290 <li><u>http://www.euref-ip.net/home</u></li>
    291 <li><u>http://www.igs-ip.net/home</u></li>
    292 <li><u>http://products.igs-ip.net/home</u></li>
    293 <li><u>http://mgex.igs-ip.net/home</u> </li>
    294 </ul>
    295 or similar caster installation.
    296 </p>
    297 
    298 <p>
    299 BNC has been written under GNU General Public License (GPL). Source code is available from Subversion software archive <u>http://software.rtcm-ntrip.org/svn/trunk/BNC</u>. Precompiled binaries of BNC are available for MS Windows, Linux, and Mac OS X systems. They can be downloaded from <u>http://igs.bkg.bund.de/ntrip/download</u>.
    300 </p>
    301 <p>
    302 Feel free to send us comments, suggestions or bug reports. Any contribution would be appreciated.
    303 </p>
    304 
    305 <p>
    306 <b>Authors</b><br><br>
    307 The BKG Ntrip Client (BNC) with a Qt Graphical User Interface (GUI) and a Command Line Interface (CLI) has been developed for
    308 <pre>
    309    Federal Agency for Cartography and Geodesy (BKG)
    310    c/o Dr. Axel R&uuml;lke
    311    Department of Geodesy, Section Satellite Navigation
    312    Frankfurt, Germany
    313    [axel.ruelke@bkg.bund.de]
    314 </pre>
    315 
    316 The software has been written by
    317 
    318 <pre>
    319    Prof. Dr. Leo&scaron; Mervart
    320    Czech Technical University (CTU)
    321    Department of Geomatics
    322    Prague, Czech Republic
    323 </pre>
    324 </p>
    325 
    326 <p>
    327 Prof. Mervart started working on BNC in 2005. His sole responsibility for writing the program code ended February 2015. In March 2015, Dipl.-Ing. Andrea St&uuml;rze took over the responsibility for maintaining  and further developing BNC's source code.
    328 </p>
    329 
    330 <p>
    331 <b>Documentation</b><br><br>
    332 BNC provides context-sensitive help (<i>What's This</i>) related to specific objects. It furthermore comes with the here presented documentation, available as part of the software and as a PDF file. Responsible for offline documentation as well as online documentation at <u>http://software.rtcm-ntrip.org/export/HEAD/ntrip/trunk/BNC/src/bnchelp.html</u> and the example configurations is Dr. Georg Weber.
    333 </p>
    334 
    335 <p>
    336 Note that some figures presented in this documentation may show screenshots from earlier versions of BNC. If so, there is either no relevant change compared to the current appearance of the program or no change at all.
    337 </p>
    338 
    339 <p>
    340 <b>Contact</b><br><br>
    341 Feel free to send us comments, suggestions or bug reports. Any contribution would be appreciated.
    342 <pre>
    343    Federal Agency for Cartography and Geodesy (BKG)
    344    Department of Geodesy, Section Satellite Navigation
    345    Richard-Strauss-Allee 11
    346    60598 Frankfurt am Main, Germany
    347    email: igs-ip@bkg.bund.de
    348 </pre>
    349 </p>
    350 
    351 <p>
    352 <b>Acknowledgements</b><br>
    353 <ul>
    354 <li>
    355 Oliver Montenbruck, German Space Operations Center, DLR, Oberpfaffenhofen, Germany published a RTCM Version 2 decoder unter GNU GPL which has been integrated in BNC.
    356 </li>
    357 <li>
    358 Thomas Yan, Australian NSW Land and Property Information, proofread earlier versions of BNC's Help Contents. Up to Version 2.11 he also provides builds of BNC for Mac OS X systems.
    359 </li>
    360 Scott Glazier, OmniSTAR Australia, has been helpful in finding BNC bugs in version 1.5.
    361 </li>
    362 <li>
    363 James Perlt, BKG, helped fixing bugs and redesigned BNC's main window in version 1.5.
    364 </li>
    365 <li>
    366 Andre Hauschild, German Space Operations Center, DLR, revised the RTCM Version 2 decoder.
    367 </li>
    368 <li>
    369 Zdenek Lukes, Czech Technical University Prague, Department of Geodesy, extended the RTCM Version 2 decoder to handle message types 3, 20, 21, and 22 and added the loss of lock indicator.
    370 </li>
    371 <li>
    372 Jan Dousa, Geodetic Observatory Pecny, Czech Republic, helped with fixing bugs in version 2.5.
    373 </li>
    374 <li>
    375 Denis Laurichesse, Centre National d'Etudes Spatiales (CNES), suggested synchronizing observations and clock corrections to reduce high frequency noise in PPP solutions.
    376 </li>
    377 <li>
    378 Lennard Huisman, Kadaster Netherlands, and Rolf Dach, Astronomical Institute University of Bern, assisted in handling satellite clocks in transformations from ITRF to regional reference frames.
    379 </li>
    380 </ul>
    381 </p>
    382 
    383 <p><h4>1.1 <a name="introPurpose">Purpose</h4></p>
    384 
    385 <p>
    386 Promoting Open RTCM Standards for streaming GNSS data over the Internet has been a major aspect in developing BNC as Open Source real-time software. Basically, the tool enables the test, validation and further evolution of new RTCM messages for precise satellite navigation. With high-level source code at hand, it also allows university education to catch up with comprehensive state-of-the-art positioning and potentially contributes fresh ideas which are free from any licensing.
    387 </p>
    388 
    389 <p> BNC was designed to serve the following purposes:
    390 <ul>
     404</div>
     405<span id="document-chapter1"></span><div class="section" id="introduction">
     406<h2>Introduction<a class="headerlink" href="#introduction" title="Permalink to this headline">¶</a></h2>
     407<div class="section" id="purpose">
     408<h3>Purpose<a class="headerlink" href="#purpose" title="Permalink to this headline">¶</a></h3>
     409<p>The BKG Ntrip Client (BNC) is a program for simultaneously retrieving, decoding, converting and processing or analyzing real-time GNSS data streams applying the &#8216;Networked Transport of RTCM via Internet Protocol&#8217; (Ntrip) standard. It has been developed within the framework of the IAG sub-commission for Europe (EUREF) and the International GNSS Service (IGS). Although meant to be a real-time tool, it comes with some post processing functionality. It can be used for data coming from Ntrip Broadcasters like</p>
     410<ul class="simple">
     411<li><a class="reference external" href="http://www.euref-ip.net/home">http://www.euref-ip.net/home</a></li>
     412<li><a class="reference external" href="http://www.igs-ip.net/home">http://www.igs-ip.net/home</a></li>
     413<li><a class="reference external" href="http://products.igs-ip.net/home">http://products.igs-ip.net/home</a></li>
     414<li><a class="reference external" href="http://mgex.igs-ip.net/home">http://mgex.igs-ip.net/home</a></li>
     415</ul>
     416<p>or similar caster installation.</p>
     417<p>BNC has been written under GNU General Public License (GPL). Source code is available from Subversion software archive <a class="reference external" href="http://software.rtcm-ntrip.org/svn/trunk/BNC">http://software.rtcm-ntrip.org/svn/trunk/BNC</a>. Precompiled binaries of BNC are available for MS Windows, Linux, and Mac OS X systems. They can be downloaded from <a class="reference external" href="http://igs.bkg.bund.de/ntrip/download">http://igs.bkg.bund.de/ntrip/download</a>.</p>
     418<p>Promoting Open RTCM Standards for streaming GNSS data over the Internet has been a major aspect in developing BNC as Open Source real-time software. Basically, the tool enables the test, validation and further evolution of new RTCM messages for precise satellite navigation. With high-level source code at hand, it also allows university education to catch up with comprehensive state-of-the-art positioning and potentially contributes fresh ideas which are free from any licensing.</p>
     419<p>BNC was designed to serve the following purposes</p>
     420<ul class="simple">
    391421<li>Retrieve real-time GNSS data streams available through Ntrip transport protocol;</li>
    392422<li>Retrieve real-time GNSS data streams via TCP directly from an IP address without using the Ntrip transport protocol;</li>
    … …  
    397427<li>Convert RINEX Version 2 to RINEX Version 3 and vice versa;</li>
    398428<li>Compare SP3 files containing satellite orbit and clock data;</li>
    399 <li>Generate orbit and clock corrections to Broadcast Ephemeris through an IP port to</li>
    400 <ul>
     429<li>Generate orbit and clock corrections to Broadcast Ephemeris through an IP port to<ul>
    401430<li>support real-time Precise Point Positioning on GNSS rovers;</li>
    402431<li>support the (outside) combination of such streams as coming simultaneously from various correction providers;</li>
    403432</ul>
     433</li>
    404434<li>Generate ephemeris and synchronized or unsynchronized observations epoch by epoch through an IP port to support real-time GNSS network engines;</li>
    405435<li>Feed a stream into a GNSS receiver via serial communication link;</li>
    … …  
    410440<li>Plot positions derived via PPP from RTCM streams or RINEX files on maps from Google Map or OpenStreetMap;</li>
    411441<li>Simultaneously process several Broadcast Correction streams to produce, encode and upload combined Broadcast Corrections;</li>
    412 
    413442<li>Estimate real-time tropospheric zenith path delays and save them in SINEX troposphere file format;</li>
    414 
    415 <li>Read GNSS orbits and clocks in a plain ASCII format from an IP port. They can be produced by a real-time GNSS engine such as RTNET and should be referenced to the IGS Earth-Centered-Earth-Fixed (ECEF) reference system. BNC will then</li>
    416 <ul>
     443<li>Read GNSS orbits and clocks in a plain ASCII format from an IP port. They can be produced by a real-time GNSS engine such as RTNET and should be referenced to the IGS Earth-Centered-Earth-Fixed (ECEF) reference system. BNC will then<ul>
    417444<li>Convert the IGS Earth-Centered-Earth-Fixed orbits and clocks into Broadcast Corrections with radial, along-track and out-of-plane components;</li>
    418445<li>Upload Broadcast Corrections as an RTCM Version 3 stream to an Ntrip Broadcaster;</li>
    … …  
    420447<li>Log the Broadcast Corrections as Clock RINEX files for further processing using other tools than BNC;</li>
    421448<li>Log the Broadcast Corrections as SP3 files for further processing using other tools than BNC;</li>
    422 </ul>
    423449<li>Upload a Broadcast Ephemeris stream in RTCM Version 3 format;</li>
    424450</ul>
    425 </p>
    426 
    427 <p>
    428 BNC supports the following GNSS stream formats and message types:
    429 </p>
    430 <p>
    431 <ul>
    432 <li>RTCM Version 2 message types; </li>
    433 <li>RTCM Version 3 'conventional' message types;</li>
     451</li>
     452</ul>
     453<p>BNC supports the following GNSS stream formats and message types:</p>
     454<ul class="simple">
     455<li>RTCM Version 2 message types;</li>
     456<li>RTCM Version 3 &#8216;conventional&#8217; message types;</li>
    434457<li>RTCM Version 3 message types for Broadcast Ephemeris;</li>
    435 <li>RTCM Version 3 'State Space Representation' (SSR) messages;</li>
    436 <li>RTCM Version 3 'Multiple Signal Messages' (MSM) and 'High Precision Multiple Signal Messages' (HP MSM);</li>
    437 <li>RTNET, a plain ASCII format defined within BNC to receive orbits and clocks from a serving GNSS engine.
    438 </ul>
    439 </p>
    440 
    441 <p>
    442 BNC supports the following GNSS file formats:
    443 </p>
    444 <p>
    445 <ul>
    446 <li>RINEX Version 2.11 & 3.03, Receiver Independent Exchange format for observations, navigation and meteorological data;</li>
     458<li>RTCM Version 3 &#8216;State Space Representation&#8217; (SSR) messages;</li>
     459<li>RTCM Version 3 &#8216;Multiple Signal Messages&#8217; (MSM) and &#8216;High Precision Multiple Signal Messages&#8217; (HP MSM);</li>
     460<li>RTNET, a plain ASCII format defined within BNC to receive orbits and clocks from a serving GNSS engine.</li>
     461</ul>
     462<p>BNC supports the following GNSS file formats:</p>
     463<ul class="simple">
     464<li>RINEX Version 2.11 &amp; 3.03, Receiver Independent Exchange format for observations, navigation and meteorological data;</li>
    447465<li>SINEX Version 2.10, Solution Independent Exchange format for station position and velocity solutions;</li>
    448466<li>SINEX TRO Draft Version 2.00, Troposphere Solution Independent Exchange format for zenith path delay products;</li>
    … …  
    452470<li>NMEA Version 0813, National Marine Electronics Association format for satellite navigation data;</li>
    453471</ul>
    454 </p>
    455 
    456 <p>
    457 Note that BNC allows to by-pass decoding and conversion algorithms for incoming streams, leaves whatever is received untouched to save it in files or output it through local TCP/IP port.
    458 </p>
    459 
    460 <p><h4>1.2 <a name="introSystem">Supported GNSS</h4></p>
    461 <p>
    462 BNC is permanently completed to finally support all existing GNSS systems throughout all features of the program. The table below shows in detail which GNSS systems are supported so far by particular applications when using the latest BNC version. Application areas named here are:
    463 <ul>
    464 <li>Decoding of RTCM or RTNET streams</li>
     472<p>Note that BNC allows to by-pass decoding and conversion algorithms for incoming streams, leaves whatever is received untouched to save it in files or output it through local TCP/IP port.</p>
     473</div>
     474<div class="section" id="authors">
     475<h3>Authors<a class="headerlink" href="#authors" title="Permalink to this headline">¶</a></h3>
     476<p>The BKG Ntrip Client (BNC) with a Qt Graphical User Interface (GUI) and a Command Line Interface (CLI) has been developed for</p>
     477<blockquote>
     478<div><div class="line-block">
     479<div class="line">Federal Agency for Cartography and Geodesy (BKG)</div>
     480<div class="line">Department of Geodesy, Section Satellite Navigation</div>
     481<div class="line">Frankfurt am Main, Germany</div>
     482</div>
     483</div></blockquote>
     484<p>The software has been written by</p>
     485<blockquote>
     486<div><div class="line-block">
     487<div class="line">Prof. Dr. Leos Mervart</div>
     488<div class="line">Czech Technical University (CTU)</div>
     489<div class="line">Department of Geomatics</div>
     490<div class="line">Prague, Czech Republic</div>
     491</div>
     492</div></blockquote>
     493<p>Prof. Mervart started working on BNC in 2005. His sole responsibility for writing the program code ended February 2015. In March 2015, Dipl.-Ing. Andrea Stürze took over the responsibility for maintaining and further developing BNC&#8217;s source code.</p>
     494</div>
     495<div class="section" id="documentation">
     496<h3>Documentation<a class="headerlink" href="#documentation" title="Permalink to this headline">¶</a></h3>
     497<p>BNC provides context-sensitive help ( <em>What&#8217;s This</em> ) related to specific objects. It furthermore comes with the here presented documentation, available as part of the software and as a PDF file. Responsible for offline documentation as well as online documentation at <a class="reference external" href="http://software.rtcm-ntrip.org/export/HEAD/ntrip/trunk/BNC/src/bnchelp.html">http://software.rtcm-ntrip.org/export/HEAD/ntrip/trunk/BNC/src/bnchelp.html</a> and example configurations is Dr. Georg Weber.</p>
     498<p>Note that some figures presented in this documentation may show screen shots from earlier versions of BNC. If so, there is either no relevant change compared to the current appearance of the program or no change at all.</p>
     499</div>
     500<div class="section" id="contact">
     501<h3>Contact<a class="headerlink" href="#contact" title="Permalink to this headline">¶</a></h3>
     502<p>Feel free to send us comments, suggestions or bug reports. Any contribution would be appreciated.</p>
     503<div class="line-block">
     504<div class="line">Federal Agency for Cartography and Geodesy (BKG)</div>
     505<div class="line">Department of Geodesy, Section Satellite Navigation</div>
     506<div class="line">Richard-Strauss-Allee 11</div>
     507<div class="line">60598 Frankfurt am Main, Germany</div>
     508<div class="line">Email: <a class="reference external" href="mailto:igs-ip&#37;&#52;&#48;bkg&#46;bund&#46;de">igs-ip<span>&#64;</span>bkg<span>&#46;</span>bund<span>&#46;</span>de</a></div>
     509</div>
     510</div>
     511<div class="section" id="acknowledgements">
     512<h3>Acknowledgements<a class="headerlink" href="#acknowledgements" title="Permalink to this headline">¶</a></h3>
     513<ul class="simple">
     514<li>Oliver Montenbruck, German Space Operations Center, DLR, Oberpfaffenhofen, Germany published a RTCM Version 2 decoder unter GNU GPL which has been integrated in BNC.</li>
     515<li>Thomas Yan, Australian NSW Land and Property Information, proofread earlier versions of BNC&#8217;s Help Contents. Up to Version 2.11 he also provides builds of BNC for Mac OS X systems.</li>
     516<li>Scott Glazier, OmniSTAR Australia, has been helpful in finding BNC bugs in version 1.5.</li>
     517<li>James Perlt, BKG, helped fixing bugs and redesigned BNC&#8217;s main window in version 1.5.</li>
     518<li>André Hauschild, German Space Operations Center, DLR, revised the RTCM Version 2 decoder.</li>
     519<li>Zdenek Lukes, Czech Technical University Prague, Department of Geodesy, extended the RTCM Version 2 decoder to handle message types 3, 20, 21, and 22 and added the loss of lock indicator.</li>
     520<li>Jan Dousa, Geodetic Observatory Pecny, Czech Republic, helped with fixing bugs in version 2.5.</li>
     521<li>Denis Laurichesse, Centre National d&#8217;&#8216;Etudes Spatiales (CNES), suggested synchronizing observations and clock corrections to reduce high frequency noise in PPP solutions.</li>
     522<li>Lennard Huisman, Kadaster Netherlands, and Rolf Dach, Astronomical Institute University of Bern, assisted in handling satellite clocks in transformations from ITRF to regional reference frames.</li>
     523</ul>
     524</div>
     525<div class="section" id="looking-back">
     526<h3>Looking Back<a class="headerlink" href="#looking-back" title="Permalink to this headline">¶</a></h3>
     527<p>A basic function of BNC is streaming GNSS data over the open Internet using the Ntrip transport protocol. Employing IP streaming for satellite positioning goes back to the beginning of our century. Wolfgang Rupprecht has been the first person who developed TCP/IP server software under the acronym of DGPS-IP <a class="reference internal" href="bnchelp.html#rupprecht2000a" id="id1">[1]</a> and published it under GNU General Public License (GPL). While connecting marine beacon receivers to PCs with permanent access to the Internet he transmitted DGPS corrections in an RTCM format to support Differential GPS positioning over North America. With approximately 200 bits/sec the bandwidth requirement for disseminating beacon data was comparatively small. Each stream was transmitted over a unique combination of IP address and port. Websites informed about existing streams and corresponding receiver positions.</p>
     528<p>To cope with an increasing number of transmitting GNSS reference stations, the Federal Agency for Cartography and Geodesy (BKG) together with the Informatik Centrum Dortmund (ICD) in Germany developed a streaming protocol for satellite navigation data called &#8216;Networked Transport of RTCM via Internet Protocol&#8217; (Ntrip). The protocol was built on top of the HTTP standard and included the provision of meta data describing the stream content. Any stream could now be globally transmitted over just one IP port: HTTP port 80. Stream availability and content details became part of the transport protocol. The concept was first published in 2003 <a class="reference internal" href="bnchelp.html#weber2004a" id="id2">[2]</a>, <a class="reference internal" href="bnchelp.html#weber2005a" id="id3">[3]</a> and was based on three software components, namely an NtripServer pushing data from a reference station to an NtripCaster and an NtripClient pulling data from the stream splitting caster to support a rover receiver. (Note that from a socket-programmers perspective NtripServer and NtripClient both act as clients; only the NtripCaster operates as socket-server.) Ntrip could essentially benefit from Internet Radio developments. It was the ICECAST multimedia server, which provided the bases for BKG&#8217;s &#8216;Professional Ntrip Broadcaster&#8217; with software published first in 2003 and of course again as Open Source under GPL.</p>
     529<p>For BKG as a governmental agency, making Ntrip an Open Industry Standard has been an objective from the very beginning. The &#8216;Radio Technical Commission for Maritime Services&#8217; (RTCM) accepted &#8216;Ntrip Version 1&#8217; in 2004 as &#8216;RTCM Recommended Standard&#8217; <a class="reference internal" href="bnchelp.html#weber2005b" id="id4">[4]</a>. Nowadays there is almost no geodetic GNSS receiver which does not come with integrated NtripClient and NtripServer functionality as part of the firmware. Hundreds of NtripCaster implementations are operated world-wide for highly accurate satellite navigation through RTK networks. Thousands of reference stations upload observations via NtripServer to central computing facilities for any kind of NtripClient application. In 2011 &#8216;Ntrip Version 2&#8217; was released <a class="reference internal" href="bnchelp.html#rtcm-sc104-2011a" id="id5">[5]</a> which cleared and fixed some design problems and HTTP protocol violations. It also supports TCP/IP via SSL and adds optional communication over RTSP/RTP and UDP.</p>
     530<p>With the advent of Ntrip as an open streaming standard, BKG&#8217;s interest turned towards taking advantage from free real-time access to GNSS observations. International Associations such as the IAG Reference Frame Sub Commissions for Africa (AFREF), Asia &amp; Pacific (APREF), Europe (EUREF), North America (NAREF) Latin America &amp; Caribbean (SIRGAS), and the International GNSS Service (IGS) maintain continental or even global GNSS networks with the majority of modern receivers supporting Ntrip stream upload. Through operating BKG&#8217;s NtripCaster software, these networks became extremely valuable sources of real-time GNSS information. In 2005, this was the starting point for developing the &#8216;BKG Ntrip Client&#8217; (BNC) as a multi-stream Open Source NtripClient that allows pulling hundreds of streams simultaneously from any number of NtripCaster installations world-wide. Decoding incoming RTCM streams and output observations epoch by epoch via IP port to feed a real-time GNSS network engine became BNC&#8217;s first and foremost ability <a class="reference internal" href="bnchelp.html#weber2009a" id="id6">[6]</a>. Converting decoded streams to short high-rate RINEX files to assist near real-time applications became a welcome by-product right from the start of this development.</p>
     531<p>Adding real-time Precise Point Positioning (PPP) support to BNC began in 2010 as an important completion in view of developing an Open RTCM Standard for that. According to the State Space Representation (SSR) model, new Version 3 messages are proposed to provide e.g. satellite orbit and clock corrections and ionospheric corrections as well as biases for code and phase data. The ultimate goal for SSR standardization is to reach centimeter level accuracy within seconds as an alternative to Network RTK methods such as VRS, FKP, and MAC. Because of interoperability aspects, an Open Standard in this area is of particular interest for clients. Regarding stand-alone PPP in BNC, it is worth mentioning that the program is not and can never be in competition with a receiver manufacturer&#8217;s proprietary solution. Only software or services that are part of a receiver firmware could have the potential of becoming a thread for commercial interests. However, implementing or not implementing an Open PPP approach in a firmware is and will always remain a manufacturer&#8217;s decision.</p>
     532<p>Implementing some post processing capability is essential for debugging real-time software in case of problems. So certain real-time options in BNC were complemented to work offline through reading data from files. Moreover, beginning in 2012, the software was extended to support Galileo, BeiDou, and QZSS besides GPS and GLONASS. With that, the Open Source tool BNC could be used for RINEX Version 3 file editing, concatenation and quality checks, a post processing functionality demanded by the IGS Multi-GNSS Experiment and not really covered at that time by UNAVCO&#8217;s famous TEQC program with its limitation on GPS.</p>
     533<p>Over the years, the BNC Subversion (SVN) software archive received over seven thousand commits made by 11 contributors representing about one hundred thirty thousand lines of code. The well-established, mature codebase is mostly written in C++ language. Its publication under GNU GPL is thought to be well-suited for test, validation and demonstration of new approaches in precise real-time satellite navigation when IP streaming is involved. Commissioned by a German governmental agency, the overall intention has been to push the development of RTCM Recommended Standards to the benefit of IAG institutions and services such as IGS and the interested public in general.</p>
     534<p>In February 2014 the overall responsibility at BKG for the concept and realization of BNC was handed over from Georg Weber to Axel R{&#8220;u}lke. He is in charge now for guiding the application and further evolution of the software in view of appearing new satellite navigation systems and services.</p>
     535</div>
     536</div>
     537<span id="document-chapter2"></span><div class="section" id="bnc-overview">
     538<span id="index-0"></span><h2>BNC Overview<a class="headerlink" href="#bnc-overview" title="Permalink to this headline">¶</a></h2>
     539<div class="section" id="supported-gnss-and-applications">
     540<span id="index-1"></span><h3>Supported GNSS and applications<a class="headerlink" href="#supported-gnss-and-applications" title="Permalink to this headline">¶</a></h3>
     541<p>BNC is permanently completed to finally support all existing GNSS systems throughout all features of the program. <a class="reference internal" href="#tab-bnc-rtcm"><span class="std std-numref">Table 1</span></a> shows in detail which GNSS systems are supported so far by particular applications when using the latest BNC version. Application areas named here are:</p>
     542<ul class="simple">
     543<li>Decoding of RTCM or RTNET <a class="footnote-reference" href="#f-rtnet" id="id1">[1]</a> streams</li>
    465544<li>RINEX and SP3 file input and output</li>
    466545<li>Encoding of SSR and ephemeris messages</li>
    … …  
    469548<li>Combining/merging SSR or ephemeris messages from various real-time sources</li>
    470549</ul>
    471 The table indicates if a message implementation in BNC could so far only be based on a 'RTCM Proposal'.
    472 </p>
    473 <p><u>Table 1:</u> Status of RTCM Version 3 message implementations in BNC supporting various GNSS systems</p>
    474 <p></p>
    475 <table border="1" rules="rows" frame="box" bgcolor="#FFF5EE" style="font-size:13">
    476 
    477 <tr align="center"><td><b>Message<br>Type #</b></td> <td><b>Description</b></td> <td><b>GNSS<br>System</b></td> <td><b>RTCM<br>Proposal&nbsp;</b></td> <td><b>Decoding&nbsp;</b></td> <td><b>&nbsp;RINEX/&nbsp;<br>&nbsp;SP3</b></td> <td><b>Encoding&nbsp;</b></td> <td><b>Upload&nbsp;</b></td> <td><b>&nbsp;PPP&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</b></td> <td><b>Combin.&nbsp;</b></td> </tr>
    478 
    479 <tr align="center"> <td><b><br>General</b></td> <td></td>             <td></td>              <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    480 <tr align="center"> <td>1005,1006</td> <td>Station</td>               <td> </td>             <td> </td> <td>x</td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    481 <tr align="center"> <td>1007,1008</td> <td>Antenna</td>               <td> </td>             <td> </td> <td>x</td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    482 <tr align="center"> <td>1033</td>      <td>Receiver, Antenna</td>     <td> </td>             <td> </td> <td>x</td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    483 <tr align="center"> <td>1013</td>      <td>System Parameters</td>     <td> </td>             <td> </td> <td>x</td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    484 
    485 <tr align="center"> <td><b><br>Navigation</b></td> <td></td>          <td></td>              <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    486 <tr align="center"> <td>1019</td> <td>Ephemeris</td>                  <td>GPS</td>           <td> </td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> </tr>
    487 <tr align="center"> <td>1020</td> <td>Ephemeris</td>                  <td>GLONASS</td>       <td> </td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> </tr>
    488 <tr align="center"> <td>1045</td> <td>Ephemeris</td>                  <td>Galileo F/Nav</td> <td> </td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    489 <tr align="center"> <td>1046</td> <td>Ephemeris</td>                  <td>Galileo I/Nav</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> </tr>
    490 <tr align="center"> <td>1043</td> <td>Ephemeris</td>                  <td>SBAS</td>          <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    491 <tr align="center"> <td>1044</td> <td>Ephemeris</td>                  <td>QZSS</td>          <td> </td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    492 <tr align="center"> <td>63</td>   <td>Ephemeris</td>                  <td>BDS</td>           <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> </tr>
    493 
    494 <tr align="center"> <td><b><br>Observation</b></td> <td></td>         <td></td>              <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    495 <tr align="center"> <td>1001-4</td>  <td>Conventional Messages</td>   <td>GPS</td>           <td> </td> <td>x</td> <td>x</td> <td> </td> <td> </td> <td>x</td> <td> </td> </tr>
    496 <tr align="center"> <td>1009-12</td> <td>Conventional Messages</td>   <td>GLONASS</td>       <td> </td> <td>x</td> <td>x</td> <td> </td> <td> </td> <td>x</td> <td> </td> </tr>
    497 
    498 <tr align="center"> <td><b><br>Observation</b></td> <td></td>         <td></td>              <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    499 <tr align="center"> <td>1071-77</td> <td>Multiple Signal Message</td> <td>GPS</td>           <td> </td> <td>x</td> <td>x</td> <td> </td> <td> </td> <td>x</td> <td> </td> </tr>
    500 <tr align="center"> <td>1081-87</td> <td>Multiple Signal Message</td> <td>GLONASS</td>       <td> </td> <td>x</td> <td>x</td> <td> </td> <td> </td> <td>x</td> <td> </td> </tr>
    501 <tr align="center"> <td>1091-97</td> <td>Multiple Signal Message</td> <td>Galileo</td>       <td> </td> <td>x</td> <td>x</td> <td> </td> <td> </td> <td>x</td> <td> </td> </tr>
    502 <tr align="center"> <td>1101-07</td> <td>Multiple Signal Message</td> <td>SBAS</td>          <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    503 <tr align="center"> <td>1111-17</td> <td>Multiple Signal Message</td> <td>QZSS</td>          <td> </td> <td>x</td> <td>x</td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    504 <tr align="center"> <td>1121-27</td> <td>Multiple Signal Message</td> <td>BDS</td>           <td> </td> <td>x</td> <td>x</td> <td> </td> <td> </td> <td>x</td> <td> </td> </tr>
    505 
    506 <tr align="center"> <td><b><br>SSR I</b></td> <td></td>               <td></td>              <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    507 <tr align="center"> <td>1057</td> <td>Orbit Corrections</td>          <td>GPS</td>           <td> </td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> </tr>
    508 <tr align="center"> <td>1063</td> <td>Orbit Corrections</td>          <td>GLONASS</td>       <td> </td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> </tr>
    509 <tr align="center"> <td>1240</td> <td>Orbit Corrections</td>          <td>Galileo</td>       <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> </tr>
    510 <tr align="center"> <td>1246</td> <td>Orbit Corrections</td>          <td>SBAS</td>          <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    511 <tr align="center"> <td>1252</td> <td>Orbit Corrections</td>          <td>QZSS</td>          <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    512 <tr align="center"> <td>1258</td> <td>Orbit Corrections</td>          <td>BDS</td>           <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> </tr>
    513 
    514 <tr align="center"> <td>1058</td> <td>Clock Corrections</td>          <td>GPS</td>           <td> </td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> </tr>
    515 <tr align="center"> <td>1064</td> <td>Clock Corrections</td>          <td>GLONASS</td>       <td> </td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> </tr>
    516 <tr align="center"> <td>1241</td> <td>Clock Corrections</td>          <td>Galileo</td>       <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> </tr>
    517 <tr align="center"> <td>1247</td> <td>Clock Corrections</td>          <td>SBAS</td>          <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    518 <tr align="center"> <td>1253</td> <td>Clock Corrections</td>          <td>QZSS</td>          <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    519 <tr align="center"> <td>1259</td> <td>Clock Corrections</td>          <td>BDS</td>           <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> </tr>
    520 
    521 <tr align="center"> <td>1059</td> <td>Code Biases</td>                <td>GPS</td>           <td> </td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> </tr>
    522 <tr align="center"> <td>1065</td> <td>Code Biases</td>                <td>GLONASS</td>       <td> </td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> </tr>
    523 <tr align="center"> <td>1242</td> <td>Code Biases</td>                <td>Galileo</td>       <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> </tr>
    524 <tr align="center"> <td>1248</td> <td>Code Biases</td>                <td>SBAS</td>          <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    525 <tr align="center"> <td>1254</td> <td>Code Biases</td>                <td>QZSS</td>          <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    526 <tr align="center"> <td>1260</td> <td>Code Biases</td>                <td>BDS</td>           <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> </tr>
    527 
    528 <tr align="center"> <td>1061, 1062</td> <td>User Range Accuracy, HR&nbsp;</td> <td>GPS</td>        <td> </td> <td>x</td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    529 <tr align="center"> <td>1067, 1068</td> <td>User Range Accuracy, HR&nbsp;</td> <td>GLONASS</td>    <td> </td> <td>x</td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    530 <tr align="center"> <td>1244, 1245</td> <td>User Range Accuracy, HR&nbsp;</td> <td>Galileo</td>    <td>x</td> <td>x</td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    531 <tr align="center"> <td>1250, 1251</td> <td>User Range Accuracy, HR&nbsp;</td> <td>SBAS</td>       <td>x</td> <td>x</td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    532 <tr align="center"> <td>1256, 1257</td> <td>User Range Accuracy, HR&nbsp;</td> <td>QZSS</td>       <td>x</td> <td>x</td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    533 <tr align="center"> <td>1262, 1263</td> <td>User Range Accuracy, HR&nbsp;</td> <td>BDS</td>        <td>x</td> <td>x</td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    534 
    535 <tr align="center"> <td>1060</td> <td>Comb. Orbits & Clocks</td>      <td>GPS</td>           <td> </td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> </tr>
    536 <tr align="center"> <td>1066</td> <td>Comb. Orbits & Clocks</td>      <td>GLONASS</td>       <td> </td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> </tr>
    537 <tr align="center"> <td>1243</td> <td>Comb. Orbits & Clocks</td>      <td>Galileo</td>       <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> </tr>
    538 <tr align="center"> <td>1249</td> <td>Comb. Orbits & Clocks</td>      <td>SBAS</td>          <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    539 <tr align="center"> <td>1255</td> <td>Comb. Orbits & Clocks</td>      <td>QZSS</td>          <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    540 <tr align="center"> <td>1261</td> <td>Comb. Orbits & Clocks</td>      <td>BDS</td>           <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> </tr>
    541 
    542 <tr align="center"> <td><b><br>SSR II</b></td> <td></td>               <td></td>             <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr>
    543 <tr align="center"> <td>1264</td> <td>VTEC</td>                       <td>GNSS </td>         <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    544 <tr align="center"> <td>1265</td> <td>Phase Biases</td>               <td>GPS</td>           <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    545 <tr align="center"> <td>1266</td> <td>Phase Biases</td>               <td>GLONASS</td>       <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    546 <tr align="center"> <td>1267</td> <td>Phase Biases</td>               <td>Galileo</td>       <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    547 <tr align="center"> <td>1268</td> <td>Phase Biases</td>               <td>SBAS</td>          <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    548 <tr align="center"> <td>1269</td> <td>Phase Biases</td>               <td>QZSS</td>          <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    549 <tr align="center"> <td>1270</td> <td>Phase Biases</td>               <td>BDS</td>           <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td>x</td> <td> </td> <td> </td> </tr>
    550 
     550<p>It is indicated when a message implementation in BNC could so far only be based on a &#8216;RTCM Proposal&#8217;.</p>
     551<table border="1" class="docutils" id="id2">
     552<span id="tab-bnc-rtcm"></span><caption><span class="caption-number">Table 1 </span><span class="caption-text">Status of RTCM Version 3 message implementations in BNC supporting various GNSS systems.</span><a class="headerlink" href="#id2" title="Permalink to this table">¶</a></caption>
     553<colgroup>
     554<col width="11%" />
     555<col width="17%" />
     556<col width="10%" />
     557<col width="9%" />
     558<col width="9%" />
     559<col width="10%" />
     560<col width="9%" />
     561<col width="9%" />
     562<col width="9%" />
     563<col width="9%" />
     564</colgroup>
     565<thead valign="bottom">
     566<tr class="row-odd"><th class="head"><strong>Message #</strong></th>
     567<th class="head"><strong>Description</strong></th>
     568<th class="head"><strong>GNSS</strong></th>
     569<th class="head"><strong>RTCM</strong>
     570<strong>Proposal</strong></th>
     571<th class="head"><strong>Decoding</strong></th>
     572<th class="head"><strong>RINEX/SP3</strong></th>
     573<th class="head"><strong>Encoding</strong></th>
     574<th class="head"><strong>Upload</strong></th>
     575<th class="head"><strong>PPP</strong></th>
     576<th class="head"><strong>Combin.</strong></th>
     577</tr>
     578</thead>
     579<tbody valign="top">
     580<tr class="row-even"><td colspan="10"><strong>General</strong></td>
     581</tr>
     582<tr class="row-odd"><td>1005,1006</td>
     583<td>Station</td>
     584<td>&nbsp;</td>
     585<td>&nbsp;</td>
     586<td>x</td>
     587<td>&nbsp;</td>
     588<td>&nbsp;</td>
     589<td>&nbsp;</td>
     590<td>&nbsp;</td>
     591<td>&nbsp;</td>
     592</tr>
     593<tr class="row-even"><td>1007,1008</td>
     594<td>Antenna</td>
     595<td>&nbsp;</td>
     596<td>&nbsp;</td>
     597<td>x</td>
     598<td>&nbsp;</td>
     599<td>&nbsp;</td>
     600<td>&nbsp;</td>
     601<td>&nbsp;</td>
     602<td>&nbsp;</td>
     603</tr>
     604<tr class="row-odd"><td>1033</td>
     605<td>Receiver, Antenna</td>
     606<td>&nbsp;</td>
     607<td>&nbsp;</td>
     608<td>x</td>
     609<td>&nbsp;</td>
     610<td>&nbsp;</td>
     611<td>&nbsp;</td>
     612<td>&nbsp;</td>
     613<td>&nbsp;</td>
     614</tr>
     615<tr class="row-even"><td>1013</td>
     616<td>System Parameters</td>
     617<td>&nbsp;</td>
     618<td>&nbsp;</td>
     619<td>x</td>
     620<td>&nbsp;</td>
     621<td>&nbsp;</td>
     622<td>&nbsp;</td>
     623<td>&nbsp;</td>
     624<td>&nbsp;</td>
     625</tr>
     626<tr class="row-odd"><td colspan="10"><strong>Navigation</strong></td>
     627</tr>
     628<tr class="row-even"><td>1019</td>
     629<td>Ephemeris</td>
     630<td>GPS</td>
     631<td>&nbsp;</td>
     632<td>x</td>
     633<td>x</td>
     634<td>x</td>
     635<td>x</td>
     636<td>x</td>
     637<td>x</td>
     638</tr>
     639<tr class="row-odd"><td>1020</td>
     640<td>Ephemeris</td>
     641<td>GLONASS</td>
     642<td>&nbsp;</td>
     643<td>x</td>
     644<td>x</td>
     645<td>x</td>
     646<td>x</td>
     647<td>x</td>
     648<td>x</td>
     649</tr>
     650<tr class="row-even"><td>1045</td>
     651<td>Ephemeris</td>
     652<td>Galileo F/Nav</td>
     653<td>&nbsp;</td>
     654<td>x</td>
     655<td>x</td>
     656<td>x</td>
     657<td>x</td>
     658<td>&nbsp;</td>
     659<td>&nbsp;</td>
     660</tr>
     661<tr class="row-odd"><td>1046</td>
     662<td>Ephemeris</td>
     663<td>Galileo I/Nav</td>
     664<td>&nbsp;</td>
     665<td>x</td>
     666<td>x</td>
     667<td>x</td>
     668<td>x</td>
     669<td>x</td>
     670<td>&nbsp;</td>
     671</tr>
     672<tr class="row-even"><td>1043</td>
     673<td>Ephemeris</td>
     674<td>SBAS</td>
     675<td>x</td>
     676<td>x</td>
     677<td>x</td>
     678<td>x</td>
     679<td>x</td>
     680<td>&nbsp;</td>
     681<td>&nbsp;</td>
     682</tr>
     683<tr class="row-odd"><td>1044</td>
     684<td>Ephemeris</td>
     685<td>QZSS</td>
     686<td>&nbsp;</td>
     687<td>x</td>
     688<td>x</td>
     689<td>x</td>
     690<td>x</td>
     691<td>&nbsp;</td>
     692<td>&nbsp;</td>
     693</tr>
     694<tr class="row-even"><td>63</td>
     695<td>Ephemeris</td>
     696<td>BDS</td>
     697<td>x</td>
     698<td>x</td>
     699<td>x</td>
     700<td>x</td>
     701<td>x</td>
     702<td>x</td>
     703<td>&nbsp;</td>
     704</tr>
     705<tr class="row-odd"><td colspan="10"><strong>Observation</strong></td>
     706</tr>
     707<tr class="row-even"><td>1001-4</td>
     708<td>Conventional Messages</td>
     709<td>GPS</td>
     710<td>&nbsp;</td>
     711<td>x</td>
     712<td>x</td>
     713<td>&nbsp;</td>
     714<td>&nbsp;</td>
     715<td>x</td>
     716<td>&nbsp;</td>
     717</tr>
     718<tr class="row-odd"><td>1009-12</td>
     719<td>Conventional Messages</td>
     720<td>GLONASS</td>
     721<td>&nbsp;</td>
     722<td>x</td>
     723<td>x</td>
     724<td>&nbsp;</td>
     725<td>&nbsp;</td>
     726<td>x</td>
     727<td>&nbsp;</td>
     728</tr>
     729<tr class="row-even"><td colspan="10"><strong>Observation</strong></td>
     730</tr>
     731<tr class="row-odd"><td>1071-77</td>
     732<td>Multiple Signal Message</td>
     733<td>GPS</td>
     734<td>&nbsp;</td>
     735<td>x</td>
     736<td>x</td>
     737<td>&nbsp;</td>
     738<td>&nbsp;</td>
     739<td>x</td>
     740<td>&nbsp;</td>
     741</tr>
     742<tr class="row-even"><td>1081-87</td>
     743<td>Multiple Signal Message</td>
     744<td>GLONASS</td>
     745<td>&nbsp;</td>
     746<td>x</td>
     747<td>x</td>
     748<td>&nbsp;</td>
     749<td>&nbsp;</td>
     750<td>x</td>
     751<td>&nbsp;</td>
     752</tr>
     753<tr class="row-odd"><td>1091-97</td>
     754<td>Multiple Signal Message</td>
     755<td>Galileo</td>
     756<td>&nbsp;</td>
     757<td>x</td>
     758<td>x</td>
     759<td>&nbsp;</td>
     760<td>&nbsp;</td>
     761<td>x</td>
     762<td>&nbsp;</td>
     763</tr>
     764<tr class="row-even"><td>1101-07</td>
     765<td>Multiple Signal Message</td>
     766<td>SBAS</td>
     767<td>x</td>
     768<td>x</td>
     769<td>x</td>
     770<td>&nbsp;</td>
     771<td>&nbsp;</td>
     772<td>&nbsp;</td>
     773<td>&nbsp;</td>
     774</tr>
     775<tr class="row-odd"><td>1111-17</td>
     776<td>Multiple Signal Message</td>
     777<td>QZSS</td>
     778<td>&nbsp;</td>
     779<td>x</td>
     780<td>x</td>
     781<td>&nbsp;</td>
     782<td>&nbsp;</td>
     783<td>&nbsp;</td>
     784<td>&nbsp;</td>
     785</tr>
     786<tr class="row-even"><td>1121-27</td>
     787<td>Multiple Signal Message</td>
     788<td>BDS</td>
     789<td>&nbsp;</td>
     790<td>x</td>
     791<td>x</td>
     792<td>&nbsp;</td>
     793<td>&nbsp;</td>
     794<td>x</td>
     795<td>&nbsp;</td>
     796</tr>
     797<tr class="row-odd"><td colspan="10"><strong>SSR I</strong></td>
     798</tr>
     799<tr class="row-even"><td>1057</td>
     800<td>Orbit Corrections</td>
     801<td>GPS</td>
     802<td>&nbsp;</td>
     803<td>x</td>
     804<td>x</td>
     805<td>x</td>
     806<td>x</td>
     807<td>x</td>
     808<td>x</td>
     809</tr>
     810<tr class="row-odd"><td>1063</td>
     811<td>Orbit Corrections</td>
     812<td>GLONASS</td>
     813<td>&nbsp;</td>
     814<td>x</td>
     815<td>x</td>
     816<td>x</td>
     817<td>x</td>
     818<td>x</td>
     819<td>x</td>
     820</tr>
     821<tr class="row-even"><td>1240</td>
     822<td>Orbit Corrections</td>
     823<td>Galileo</td>
     824<td>x</td>
     825<td>x</td>
     826<td>x</td>
     827<td>x</td>
     828<td>x</td>
     829<td>x</td>
     830<td>&nbsp;</td>
     831</tr>
     832<tr class="row-odd"><td>1246</td>
     833<td>Orbit Corrections</td>
     834<td>SBAS</td>
     835<td>x</td>
     836<td>x</td>
     837<td>x</td>
     838<td>x</td>
     839<td>x</td>
     840<td>&nbsp;</td>
     841<td>&nbsp;</td>
     842</tr>
     843<tr class="row-even"><td>1252</td>
     844<td>Orbit Corrections</td>
     845<td>QZSS</td>
     846<td>x</td>
     847<td>x</td>
     848<td>x</td>
     849<td>x</td>
     850<td>x</td>
     851<td>&nbsp;</td>
     852<td>&nbsp;</td>
     853</tr>
     854<tr class="row-odd"><td>1258</td>
     855<td>Orbit Corrections</td>
     856<td>BDS</td>
     857<td>x</td>
     858<td>x</td>
     859<td>x</td>
     860<td>x</td>
     861<td>x</td>
     862<td>x</td>
     863<td>&nbsp;</td>
     864</tr>
     865<tr class="row-even"><td>1058</td>
     866<td>Clock Corrections</td>
     867<td>GPS</td>
     868<td>&nbsp;</td>
     869<td>x</td>
     870<td>x</td>
     871<td>x</td>
     872<td>x</td>
     873<td>x</td>
     874<td>x</td>
     875</tr>
     876<tr class="row-odd"><td>1064</td>
     877<td>Clock Corrections</td>
     878<td>GLONASS</td>
     879<td>&nbsp;</td>
     880<td>x</td>
     881<td>x</td>
     882<td>x</td>
     883<td>x</td>
     884<td>x</td>
     885<td>x</td>
     886</tr>
     887<tr class="row-even"><td>1241</td>
     888<td>Clock Corrections</td>
     889<td>Galileo</td>
     890<td>x</td>
     891<td>x</td>
     892<td>x</td>
     893<td>x</td>
     894<td>x</td>
     895<td>x</td>
     896<td>&nbsp;</td>
     897</tr>
     898<tr class="row-odd"><td>1247</td>
     899<td>Clock Corrections</td>
     900<td>SBAS</td>
     901<td>x</td>
     902<td>x</td>
     903<td>x</td>
     904<td>x</td>
     905<td>x</td>
     906<td>&nbsp;</td>
     907<td>&nbsp;</td>
     908</tr>
     909<tr class="row-even"><td>1253</td>
     910<td>Clock Corrections</td>
     911<td>QZSS</td>
     912<td>x</td>
     913<td>x</td>
     914<td>x</td>
     915<td>x</td>
     916<td>x</td>
     917<td>&nbsp;</td>
     918<td>&nbsp;</td>
     919</tr>
     920<tr class="row-odd"><td>1259</td>
     921<td>Clock Corrections</td>
     922<td>BDS</td>
     923<td>x</td>
     924<td>x</td>
     925<td>x</td>
     926<td>x</td>
     927<td>x</td>
     928<td>x</td>
     929<td>&nbsp;</td>
     930</tr>
     931<tr class="row-even"><td>1059</td>
     932<td>Code Biases</td>
     933<td>GPS</td>
     934<td>&nbsp;</td>
     935<td>x</td>
     936<td>x</td>
     937<td>x</td>
     938<td>x</td>
     939<td>x</td>
     940<td>&nbsp;</td>
     941</tr>
     942<tr class="row-odd"><td>1065</td>
     943<td>Code Biases</td>
     944<td>GLONASS</td>
     945<td>&nbsp;</td>
     946<td>x</td>
     947<td>x</td>
     948<td>x</td>
     949<td>x</td>
     950<td>x</td>
     951<td>&nbsp;</td>
     952</tr>
     953<tr class="row-even"><td>1242</td>
     954<td>Code Biases</td>
     955<td>Galileo</td>
     956<td>x</td>
     957<td>x</td>
     958<td>x</td>
     959<td>x</td>
     960<td>x</td>
     961<td>x</td>
     962<td>&nbsp;</td>
     963</tr>
     964<tr class="row-odd"><td>1248</td>
     965<td>Code Biases</td>
     966<td>SBAS</td>
     967<td>x</td>
     968<td>x</td>
     969<td>x</td>
     970<td>x</td>
     971<td>x</td>
     972<td>&nbsp;</td>
     973<td>&nbsp;</td>
     974</tr>
     975<tr class="row-even"><td>1254</td>
     976<td>Code Biases</td>
     977<td>QZSS</td>
     978<td>x</td>
     979<td>x</td>
     980<td>x</td>
     981<td>x</td>
     982<td>x</td>
     983<td>&nbsp;</td>
     984<td>&nbsp;</td>
     985</tr>
     986<tr class="row-odd"><td>1260</td>
     987<td>Code Biases</td>
     988<td>BDS</td>
     989<td>x</td>
     990<td>x</td>
     991<td>x</td>
     992<td>x</td>
     993<td>x</td>
     994<td>x</td>
     995<td>&nbsp;</td>
     996</tr>
     997<tr class="row-even"><td>1061, 1062</td>
     998<td>User Range Accuracy, HR</td>
     999<td>GPS</td>
     1000<td>&nbsp;</td>
     1001<td>x</td>
     1002<td>&nbsp;</td>
     1003<td>&nbsp;</td>
     1004<td>&nbsp;</td>
     1005<td>&nbsp;</td>
     1006<td>&nbsp;</td>
     1007</tr>
     1008<tr class="row-odd"><td>1067, 1068</td>
     1009<td>User Range Accuracy, HR</td>
     1010<td>GLONASS</td>
     1011<td>&nbsp;</td>
     1012<td>x</td>
     1013<td>&nbsp;</td>
     1014<td>&nbsp;</td>
     1015<td>&nbsp;</td>
     1016<td>&nbsp;</td>
     1017<td>&nbsp;</td>
     1018</tr>
     1019<tr class="row-even"><td>1244, 1245</td>
     1020<td>User Range Accuracy, HR</td>
     1021<td>Galileo</td>
     1022<td>x</td>
     1023<td>x</td>
     1024<td>&nbsp;</td>
     1025<td>&nbsp;</td>
     1026<td>&nbsp;</td>
     1027<td>&nbsp;</td>
     1028<td>&nbsp;</td>
     1029</tr>
     1030<tr class="row-odd"><td>1250, 1251</td>
     1031<td>User Range Accuracy, HR</td>
     1032<td>SBAS</td>
     1033<td>x</td>
     1034<td>x</td>
     1035<td>&nbsp;</td>
     1036<td>&nbsp;</td>
     1037<td>&nbsp;</td>
     1038<td>&nbsp;</td>
     1039<td>&nbsp;</td>
     1040</tr>
     1041<tr class="row-even"><td>1256, 1257</td>
     1042<td>User Range Accuracy, HR</td>
     1043<td>QZSS</td>
     1044<td>x</td>
     1045<td>x</td>
     1046<td>&nbsp;</td>
     1047<td>&nbsp;</td>
     1048<td>&nbsp;</td>
     1049<td>&nbsp;</td>
     1050<td>&nbsp;</td>
     1051</tr>
     1052<tr class="row-odd"><td>1262, 1263</td>
     1053<td>User Range Accuracy, HR</td>
     1054<td>BDS</td>
     1055<td>x</td>
     1056<td>x</td>
     1057<td>&nbsp;</td>
     1058<td>&nbsp;</td>
     1059<td>&nbsp;</td>
     1060<td>&nbsp;</td>
     1061<td>&nbsp;</td>
     1062</tr>
     1063<tr class="row-even"><td>1060</td>
     1064<td>Comb. Orbits &amp; Clocks</td>
     1065<td>GPS</td>
     1066<td>&nbsp;</td>
     1067<td>x</td>
     1068<td>x</td>
     1069<td>x</td>
     1070<td>x</td>
     1071<td>x</td>
     1072<td>x</td>
     1073</tr>
     1074<tr class="row-odd"><td>1066</td>
     1075<td>Comb. Orbits &amp; Clocks</td>
     1076<td>GLONASS</td>
     1077<td>&nbsp;</td>
     1078<td>x</td>
     1079<td>x</td>
     1080<td>x</td>
     1081<td>x</td>
     1082<td>x</td>
     1083<td>x</td>
     1084</tr>
     1085<tr class="row-even"><td>1243</td>
     1086<td>Comb. Orbits &amp; Clocks</td>
     1087<td>Galileo</td>
     1088<td>x</td>
     1089<td>x</td>
     1090<td>x</td>
     1091<td>x</td>
     1092<td>x</td>
     1093<td>x</td>
     1094<td>&nbsp;</td>
     1095</tr>
     1096<tr class="row-odd"><td>1249</td>
     1097<td>Comb. Orbits &amp; Clocks</td>
     1098<td>SBAS</td>
     1099<td>x</td>
     1100<td>x</td>
     1101<td>x</td>
     1102<td>x</td>
     1103<td>x</td>
     1104<td>&nbsp;</td>
     1105<td>&nbsp;</td>
     1106</tr>
     1107<tr class="row-even"><td>1255</td>
     1108<td>Comb. Orbits &amp; Clocks</td>
     1109<td>QZSS</td>
     1110<td>x</td>
     1111<td>x</td>
     1112<td>x</td>
     1113<td>x</td>
     1114<td>x</td>
     1115<td>&nbsp;</td>
     1116<td>&nbsp;</td>
     1117</tr>
     1118<tr class="row-odd"><td>1261</td>
     1119<td>Comb. Orbits &amp; Clocks</td>
     1120<td>BDS</td>
     1121<td>x</td>
     1122<td>x</td>
     1123<td>x</td>
     1124<td>x</td>
     1125<td>x</td>
     1126<td>x</td>
     1127<td>&nbsp;</td>
     1128</tr>
     1129<tr class="row-even"><td colspan="10"><strong>SSR II</strong></td>
     1130</tr>
     1131<tr class="row-odd"><td>1264</td>
     1132<td>VTEC</td>
     1133<td>GNSS</td>
     1134<td>x</td>
     1135<td>x</td>
     1136<td>x</td>
     1137<td>x</td>
     1138<td>x</td>
     1139<td>&nbsp;</td>
     1140<td>&nbsp;</td>
     1141</tr>
     1142<tr class="row-even"><td>1265</td>
     1143<td>Phase Biases</td>
     1144<td>GPS</td>
     1145<td>x</td>
     1146<td>x</td>
     1147<td>x</td>
     1148<td>x</td>
     1149<td>x</td>
     1150<td>&nbsp;</td>
     1151<td>&nbsp;</td>
     1152</tr>
     1153<tr class="row-odd"><td>1266</td>
     1154<td>Phase Biases</td>
     1155<td>GLONASS</td>
     1156<td>x</td>
     1157<td>x</td>
     1158<td>x</td>
     1159<td>x</td>
     1160<td>x</td>
     1161<td>&nbsp;</td>
     1162<td>&nbsp;</td>
     1163</tr>
     1164<tr class="row-even"><td>1267</td>
     1165<td>Phase Biases</td>
     1166<td>Galileo</td>
     1167<td>x</td>
     1168<td>x</td>
     1169<td>x</td>
     1170<td>x</td>
     1171<td>x</td>
     1172<td>&nbsp;</td>
     1173<td>&nbsp;</td>
     1174</tr>
     1175<tr class="row-odd"><td>1268</td>
     1176<td>Phase Biases</td>
     1177<td>SBAS</td>
     1178<td>x</td>
     1179<td>x</td>
     1180<td>x</td>
     1181<td>x</td>
     1182<td>x</td>
     1183<td>&nbsp;</td>
     1184<td>&nbsp;</td>
     1185</tr>
     1186<tr class="row-even"><td>1269</td>
     1187<td>Phase Biases</td>
     1188<td>QZSS</td>
     1189<td>x</td>
     1190<td>x</td>
     1191<td>x</td>
     1192<td>x</td>
     1193<td>x</td>
     1194<td>&nbsp;</td>
     1195<td>&nbsp;</td>
     1196</tr>
     1197<tr class="row-odd"><td>1270</td>
     1198<td>Phase Biases</td>
     1199<td>BDS</td>
     1200<td>x</td>
     1201<td>x</td>
     1202<td>x</td>
     1203<td>x</td>
     1204<td>x</td>
     1205<td>&nbsp;</td>
     1206<td>&nbsp;</td>
     1207</tr>
     1208</tbody>
    5511209</table>
    552 <br>
    553 
    554 <p><h4>1.3 <a name="introFlow">Data Flow</h4></p>
    555 
    556 <p>
    557 BNC can be used in different contexts with varying data flows. Typical real-time communication follows the Ntrip protocol over TCP/IP (probably via SSL), RTSP/RTP or UDP, plain TCP/IP protocol, or serial communication links. Stream content could be observations, ephemeris, satellite orbit/clock products or NMEA sentences.
    558 </p>
    559 <p>
    560 The first of the following figures shows a flow chart of BNC connected to a GNSS receiver providing observations via serial or TCP communication link for the purpose of Precise Point Positioning. The second figure shows the conversion of RTCM streams to RINEX files. The third figure shows a flow chart of BNC feeding a real-time GNSS engine which estimates precise orbits and clocks. BNC is used in this scenario to encode correctors to RTCM Version 3 and upload them to an Ntrip Broadcaster. The fourth figure shows BNC combining several Broadcast Correction streams to disseminate the combination product while saving results in SP3 and Clock RINEX files.
    561 </p>
    562 <p><img src="IMG/screenshot10.png"/></p>
    563 <p><u>Figure 1:</u> Flowchart, BNC connected to a GNSS rover for Precise Point Positioning</p>
    564 
    565 <p>
    566 </p>
    567 <p><img src="IMG/screenshot01.png"/></p>
    568 <p><u>Figure 2:</u> Flowchart, BNC converting RTCM streams to RINEX batches</p>
    569 
    570 <p>
    571 </p>
    572 <p><img src="IMG/screenshot02.png"/></p>
    573 <p><u>Figure 3:</u> Flowchart, BNC feeding a real-time GNSS engine and uploading encoded Broadcast Corrections</p>
    574 
    575 <p>
    576 </p>
    577 <p><img src="IMG/screenshot19.png"/></p>
    578 <p><u>Figure 4:</u> Flowchart, BNC combining Broadcast Correction streams</p>
    579 
    580 <p><h4>1.4 <a name="introHandling">Handling</h4></p>
    581 <p>
    582 Although BNC is mainly a real-time tool to be operated online, it can be run offline
    583 <ul>
     1210</div>
     1211<div class="section" id="data-flow">
     1212<span id="index-4"></span><h3>Data Flow<a class="headerlink" href="#data-flow" title="Permalink to this headline">¶</a></h3>
     1213<p>BNC can be used in different contexts with varying data flows. Typical real-time communication follows the Ntrip protocol over TCP/IP (probably via SSL), RTSP/RTP or UDP, plain TCP/IP protocol, or serial communication links. Stream content could be observations, ephemeris, satellite orbit/clock products or NMEA sentences.</p>
     1214<p><a class="reference internal" href="#fig-1"><span class="std std-numref">Fig. 1</span></a> shows a flow chart of BNC connected to a GNSS receiver providing observations via serial or TCP communication link for the purpose of Precise Point Positioning. <a class="reference internal" href="#fig-2"><span class="std std-numref">Fig. 2</span></a> shows the conversion of RTCM streams to RINEX files. <a class="reference internal" href="#fig-3"><span class="std std-numref">Fig. 3</span></a> shows a flow chart of BNC feeding a real-time GNSS engine which estimates precise orbits and clocks. BNC is used in this scenario to encode correctors to RTCM Version 3 and upload them to an Ntrip Broadcaster. <a class="reference internal" href="#fig-4"><span class="std std-numref">Fig. 4</span></a> shows BNC combining several Broadcast Correction streams to disseminate the combination product while saving results in SP3 and Clock RINEX files.</p>
     1215<div class="figure" id="id3">
     1216<span id="fig-1"></span><a class="reference internal image-reference" href="_images/fig_1.png"><img alt="_images/fig_1.png" src="_images/fig_1.png" style="width: 649.0px; height: 318.0px;" /></a>
     1217<p class="caption"><span class="caption-number">Fig. 1 </span><span class="caption-text">Flowchart, BNC connected to a GNSS rover for Precise Point Positioning.</span></p>
     1218</div>
     1219<div class="figure" id="id4">
     1220<span id="fig-2"></span><a class="reference internal image-reference" href="_images/fig_2.png"><img alt="_images/fig_2.png" src="_images/fig_2.png" style="width: 651.0px; height: 327.0px;" /></a>
     1221<p class="caption"><span class="caption-number">Fig. 2 </span><span class="caption-text">Flowchart, BNC converting RTCM streams to RINEX batches.</span></p>
     1222</div>
     1223<div class="figure" id="id5">
     1224<span id="fig-3"></span><a class="reference internal image-reference" href="_images/fig_3.png"><img alt="_images/fig_3.png" src="_images/fig_3.png" style="width: 648.0px; height: 345.0px;" /></a>
     1225<p class="caption"><span class="caption-number">Fig. 3 </span><span class="caption-text">Flowchart, BNC feeding a real-time GNSS engine and uploading encoded Broadcast Corrections</span></p>
     1226</div>
     1227<div class="figure" id="id6">
     1228<span id="fig-4"></span><a class="reference internal image-reference" href="_images/fig_4.png"><img alt="_images/fig_4.png" src="_images/fig_4.png" style="width: 650.0px; height: 318.0px;" /></a>
     1229<p class="caption"><span class="caption-number">Fig. 4 </span><span class="caption-text">Flowchart, BNC combining Broadcast Correction streams.</span></p>
     1230</div>
     1231</div>
     1232<div class="section" id="handling">
     1233<span id="index-5"></span><h3>Handling<a class="headerlink" href="#handling" title="Permalink to this headline">¶</a></h3>
     1234<p>Although BNC is mainly a real-time tool to be operated online, it can be run offline</p>
     1235<ul class="simple">
    5841236<li>To simulate real-time observation situations for debugging purposes;</li>
    5851237<li>For post processing purposes.</li>
    5861238</ul>
    587 Furthermore, apart from its regular window mode, BNC can be run as a batch/background job in a 'no window' mode, using processing options from a previously saved configuration or from command line.
    588 </p>
    589 <p>
    590 Unless it runs offline, BNC
    591 </p>
    592 <ul>
     1239<p>Furthermore, apart from its regular window mode, BNC can be run as a batch/background job in a &#8216;no window&#8217; mode, using processing options from a previously saved configuration or from command line.</p>
     1240<p>Unless it runs offline, BNC</p>
     1241<ul class="simple">
    5931242<li>Requires access to the Internet with a minimum of about 2 to 6 kbits/sec per stream depending on the stream format and the number of visible satellites. You need to make sure that the connection can sustain the required bandwidth;</li>
    5941243<li>Requires the clock of the host computer to be properly synchronized;</li>
    5951244<li>Has the capacity to retrieve hundreds of GNSS data streams simultaneously. Please be aware that such usage may incur a heavy load on the Ntrip Broadcaster side depending on the number of streams requested. We recommend limiting the number of streams where possible to avoid unnecessary workload.</li>
    5961245</ul>
    597 </p>
    598 
    599 <p>
    600 The main window of BNC shows a 'Top menu bar' section, a 'Settings' sections with panels to set processing options, a 'Streams' section, a section for 'Log' tabs, and a 'Bottom menu bar' section, see figure below.
    601 </p>
    602 <p><img src="IMG/screenshot09.png"/></p>
    603 <p><u>Figure 5:</u> Sections on BNC's main window</p>
    604 
    605 <p>
    606 Running BNC in interactive mode requires graphics support. This is also
    607 required in batch mode when producing plots. Windows and Mac OS X systems always
    608 support graphics. However, when using BNC in batch mode on Linux systems for
    609 producing plots, you need to make sure that at least a virtual X-Server like
    610 'Xvfb' is installed and the '-display' command line option is used.
    611 </p>
    612 
    613 <p>
    614 The usual handling of BNC is that you first select a number of streams ('Add Stream'). Any stream configured to BNC shows up on the 'Streams' canvas in the middle of BNC's main window. You then go through BNC's various configuration panels to set a combination of input, processing and output options before you start the program ('Start'). Most configuration panels are dedicated to a certain function of BNC. If the first option field on such a configuration panel is empty, the affected functionality is deactivated.
    615 </p>
    616 
    617 <p>
    618 Records of BNC's activities are shown in the 'Log' tab which is part of the 'Log' canvas. The bandwidth consumption per stream, the latency of incoming observations, and a PPP time series for coordinate displacements are also part of that canvas and shown in the 'Throughput', 'Latency' and 'PPP Plot' tabs.
    619 </p>
    620 
    621 <p>
    622 Configuration options are usually first set using BNC's Graphical User Interface (GUI), then saved in a configuration file. For routine operations in batch mode all of BNC's configuration options can be extracted from the configuration file and applied using the program's Command Line Interface (CLI).
    623 </p>
    624 
    625 <p><h4>1.5 <a name="introInst">Installation</h4></p>
    626 <p>
    627 Precompiled builds of BNC are available for MS Windows, Linux, and Mac OS X systems. They can be downloaded for installation from <u>http://igs.bkg.bund.de/ntrip/download</u>. Please ensure that you always use the latest released version of the program.
    628 </p>
    629 <p>
    630 <u>MS Windows Build:</u> A dynamically compiled shared library build for Mircrosoft Windows systems is provided as Microsoft Installer (MSI) file. MSI files are used for installation, storage, and removal of programs. The BNC files are contained in a MSI package, which is used with the program's client-side installer service, an .EXE file, to open and install the program. We used the MinGW Version 4.4.0 compiler to create BNC for Windows. After installation your 'bnc.exe' file shows up e.g. under 'All Programs'.
    631 </p>
    632 
    633 <p>
    634 <u>Linux Build:</u> Static library and shared library builds for BNC are provided for a selection of Linux distributions. Download the ZIP archive for a version which fits to your Linux system, unzip the archive and run the included BNC binary. A static build would be sufficient in case you <u>do not want</u> BNC to plot PPP results with Google Map (GM) or OpenStreetMap (OSM) maps in the background. GM/OSM usage requires BNC builds from shared libraries.
    635 </p>
    636 
    637 <p>
    638 <u>Mac OS X Build:</u>
    639 A shared library 'Disk iMaGe' (DMG) file is provided for BNC on OS X systems; it also comes in a ZIP archive. The DMG file format is used in the Mac for distributing software. Mac install packages appear as a virtual disk drive. After download, when the DMG file icon is double clicked, the virtual drive is 'mounted' on the desktop. Install BNC by dragging the 'bnc.app' icon to your '/Applications' folder. To start BNC, double click on '/Applications/bnc.app'. You could also start BNC via Command Line Interface (CLI) using command '/Applications/bnc.app/Contents/MacOS/bnc'.
    640 </p>
    641 
    642 <p><h4>1.5.1 <a name="introCompile">Compilation</h4></p>
    643 
    644 <p>
    645 BNC has been written as Open Source and published under GNU General Public License (GPL). The latest source code can be checked out from Subversion repository <u>http://software.rtcm-ntrip.org/svn/trunk/BNC</u>. A ZIP archive available from <u>http://igs.bkg.bund.de/ntrip/download</u> provides the source code for BNC Version 2.12.0, developed using Qt Version 4.8.5.
    646 </p>
    647 <p>The following describes how you can produce your own builds of BNC on MS Windows, Linux, and Mac systems. It is likely that BNC can also be compiled on other systems where a GNU compiler and Qt Version 4.8.5 or any later version is installed.
    648 </p>
    649 
    650 <p><b>Static versus Shared Libraries</b><br>
    651 You can produce static or shared library builds of BNC. <u>Static</u> builds are sufficient in case you do not want BNC to produce track maps on top of Google Map (GM) or OpenStreetMap (OSM). GM/OSM usage would require the QtWebKit library which can only be part of BNC builds from <u>shared</u> Qt libraries. Hence, having a shared library Qt installation available is a precondition for producing a shared library build of BNC.
    652 </p>
    653 
    654 <p><b>MS Windows Systems, Shared Library</b><br>
    655 This explains how to install a shared Qt 4.8.5 library on MS Windows systems to then create your own shared build of BNC.
    656 </p>
    657 
    658 <ol type=f>
    659 <li>Supposing that 'Secure Socket Layer (SSL)' is not available on you system, you should install OpenSSL libraries in C:\OpenSSL-Win32. They are available e.g. from <u>http://igs.bkg.bund.de/root_ftp/NTRIP/software/Win32OpenSSL-1_0_1e.exe</u>. See <u>http://slproweb.com/products/Win32OpenSSL.html</u> for other SSL resources. Ignore possibly occurring comments about missing components during installation.</li>
    660 
    661 <li>Download MinGW compiler Version 4.4.0 e.g. from <u>http://igs.bkg.bund.de/root_ftp/NTRIP/software/MinGW-gcc440_1.zip</u></li>
    662 
    663 <li>Unzip the ZIP archive and move its contents to a directory C:\MinGW. Now you can do either (4) or (5, 6, 8, 9, 10). Following (4) is suggested.</li>
    664 
    665 <li>Download file 'qt-win-opensource-4.8.5-mingw.exe' (317 MB) e.g. from <u>https://download.qt.io/archive/qt/4.8/4.8.5/</u>. Execute this file to install a pre-compiled shared Qt library.</li>
    666      
    667 <li>Download file 'qt-everywhere-opensource-src-4.8.5.zip' (269 MB) e.g. from <u>https://download.qt.io/archive/qt/4.8/4.8.5/</u></li>
    668 
    669 <li>Unzip the ZIP archive and move the contents of the contained directory into a directory C:\Qt\4.8.5.</li>
    670 
    671 <li>Create somewhere a file QtEnv.bat with the following content:
    672 <pre>
    673    set QTDIR=C:\Qt\4.8.5
    674    set PATH=%PATH%;C:\MinGW\bin;C:\Qt\4.8.5\bin
    675    set QMAKESPEC=C:\Qt\4.8.5\mkspecs\win32-g++
    676 </pre></li>
    677 
    678 <li>Open a command line window and execute file QtEnv.bat</li>
    679 
    680 <li>Go to directory C:\Qt\4.8.5 and configure Qt using command
    681 <pre>
    682    configure -fast -webkit -release -nomake examples -nomake tutorial
    683              -openssl -I C:\OpenSSL-Win32\include
    684 </pre></li>
    685 
    686 <li>Compile Qt using command
    687 <pre>
    688    mingw32-make
    689 </pre>
    690 This may take quite a long time. Don't worry if the compilation process runs into a problem after some time. It is likely that the libraries you require are already generated at that time.<br>
    691 Should you want to reconfiguring Qt following steps (8)-(10) you first need to clean the previous configuration using command 'mingw32-make confclean'. Run command 'mingw32-make clean' to delete previously compiled source code.</li>
    692 
    693 <li>Download latest BNC from SVN repository <u>http://software.rtcm-ntrip.org/svn/trunk/BNC.</u></li>
    694 
    695 <li>Open command line window and execute file QtEnv.bat, see (7)</li>
    696 
    697 <li>Go to directory BNC and enter command
    698 <pre>
    699    qmake bnc.pro
    700 </pre></li>
    701 
    702 <li>Enter command
    703 <pre>
    704    mingw32-make
    705 </pre></li>
    706 
    707 <li>Find binary file bnc.exe in directory named src.</li>
    708 
    709 <li>Extend the Windows environment variable PATH by C:\Qt\4.8.5\bin.</li>
     1246<p>The main window of BNC shows a &#8216;Top menu bar&#8217; section, a &#8216;Settings&#8217; sections with panels to set processing options, a &#8216;Streams&#8217; section, a section for &#8216;Log&#8217; tabs, and a &#8216;Bottom menu bar&#8217; section <a class="reference internal" href="#fig-5"><span class="std std-numref">(Fig. 5)</span></a>.</p>
     1247<div class="figure" id="id7">
     1248<span id="fig-5"></span><a class="reference internal image-reference" href="_images/fig_5.png"><img alt="_images/fig_5.png" src="_images/fig_5.png" style="width: 969.0px; height: 644.0px;" /></a>
     1249<p class="caption"><span class="caption-number">Fig. 5 </span><span class="caption-text">Sections on BNC&#8217;s main window.</span></p>
     1250</div>
     1251<p>Running BNC in interactive mode requires graphics support. This is also required in batch mode when producing plots. Windows and Mac OS X systems always support graphics. However, when using BNC in batch mode on Linux systems for producing plots, you need to make sure that at least a virtual X-Server like &#8216;Xvfb&#8217; is installed and the &#8216;-display&#8217; command line option is used.</p>
     1252<p>The usual handling of BNC is that you first select a number of streams (&#8216;Add Stream&#8217;). Any stream configured to BNC shows up on the &#8216;Streams&#8217; canvas in the middle of BNC&#8217;s main window. You then go through BNC&#8217;s various configuration panels to set a combination of input, processing and output options before you start the program (&#8216;Start&#8217;). Most configuration panels are dedicated to a certain function of BNC. If the first option field on such a configuration panel is empty, the affected functionality is deactivated.</p>
     1253<p>Records of BNC&#8217;s activities are shown in the &#8216;Log&#8217; tab which is part of the &#8216;Log&#8217; canvas. The bandwidth consumption per stream, the latency of incoming observations, and a PPP time series for coordinate displacements are also part of that canvas and shown in the &#8216;Throughput&#8217;, &#8216;Latency&#8217; and &#8216;PPP Plot&#8217; tabs.</p>
     1254<p>Configuration options are usually first set using BNC&#8217;s Graphical User Interface (GUI), then saved in a configuration file. For routine operations in batch mode all of BNC&#8217;s configuration options can be extracted from the configuration file and applied using the program&#8217;s Command Line Interface (CLI).</p>
     1255</div>
     1256<div class="section" id="limitations">
     1257<span id="index-6"></span><h3>Limitations<a class="headerlink" href="#limitations" title="Permalink to this headline">¶</a></h3>
     1258<ul class="simple">
     1259<li>In Qt-based desktop environments (like KDE) on Unix/Linux platforms it may happen that you experience a crash of BNC at startup even when running the program in the background using the &#8216;-nw&#8217; option. This is a known bug most likely resulting from an incompatibility of Qt libraries in the environment and in BNC. Entering the command <code class="docutils literal"><span class="pre">unset</span> <span class="pre">SESSION\MANAGER</span></code> before running BNC may help as a work-around.</li>
     1260<li>Using RTCM Version 3 to produce RINEX files, BNC will properly handle most message types. However, when handling message types 1001, 1003, 1009 and 1011 where the ambiguity field is not set, the output will be no valid RINEX. All values will be stored modulo 299792.458 (speed of light).</li>
     1261<li>Using RTCM Version 2, BNC will only handle message types 18 and 19 or 20 and 21 together with position and the antenna offset information carried in types 3 and 22. Note that processing carrier phase corrections and pseudo-range corrections contained in message types 20 and 21 needs access to Broadcast Ephemeris. Hence, whenever dealing with message types 20 and 21, make sure that Broadcast Ephemeris become available for BNC through also retrieving at least one RTCM Version 3 stream carrying message types 1019 (GPS ephemeris) and 1020 (GLONASS ephemeris).</li>
     1262<li>BNC&#8217;s &#8216;Get Table&#8217; function only shows the STR records of a source-table. You can use an Internet browser to download the full source-table content of any Ntrip Broadcaster by simply entering its URL in the form of <a class="reference external" href="http://host:port">http://host:port</a>. Data field number 8 in the NET records may provide information about where to register for an Ntrip Broadcaster account.</li>
     1263<li>EUREF as well as IGS adhere to an Open Data policy. Streams are made available through Ntrip Broadcasters at www.euref-ip.net, www.igs-ip.net, products.igs-ip.net, and mgex.igs-ip.net free of charge to anyone for any purpose. There is no indication up until now how many users will need to be supported simultaneously. The given situation may develop in such a way that it might become difficult to serve all registered users at the same times. In cases where limited resources on the Ntrip Broadcaster side (software restrictions, bandwidth limitation etc.) dictates, first priority in stream provision will be given to stream providers followed by re-broadcasting activities and real-time analysis centers while access to others might be temporarily denied.</li>
     1264<li>Once BNC has been started, many of its configuration options cannot be changed as long as it is stopped. See chapter &#8216;Reread Configuration&#8217; for on-the-fly configuration exceptions.</li>
     1265<li>Drag and drop of configuration files is currently not supported on Mac OS X. On such system you have to start BNC via command line.</li>
     1266</ul>
     1267<p class="rubric">Footnotes</p>
     1268<table class="docutils footnote" frame="void" id="f-rtnet" rules="none">
     1269<colgroup><col class="label" /><col /></colgroup>
     1270<tbody valign="top">
     1271<tr><td class="label"><a class="fn-backref" href="#id1">[1]</a></td><td>RTNet, GPS Solutions Inc., <a class="reference external" href="http://gps-solutions.com">http://gps-solutions.com</a></td></tr>
     1272</tbody>
     1273</table>
     1274</div>
     1275</div>
     1276<span id="document-chapter3"></span><div class="section" id="installation">
     1277<h2>Installation<a class="headerlink" href="#installation" title="Permalink to this headline">¶</a></h2>
     1278<div class="section" id="pre-compiled-builds">
     1279<h3>Pre-compiled builds<a class="headerlink" href="#pre-compiled-builds" title="Permalink to this headline">¶</a></h3>
     1280<p>Precompiled builds of BNC are available for MS Windows, Linux, and Mac OS X systems. They can be downloaded for installation from <a class="reference external" href="http://igs.bkg.bund.de/ntrip/download">http://igs.bkg.bund.de/ntrip/download</a>. Please ensure that you always use the latest released version of the program.</p>
     1281<p class="rubric">MS Windows Build</p>
     1282<p>A dynamically compiled shared library build for Mircrosoft Windows systems is provided as Microsoft Installer (MSI) file. MSI files are used for installation, storage, and removal of programs. The BNC files are contained in a MSI package, which is used with the program&#8217;s client-side installer service, an .EXE file, to open and install the program. We used the MinGW Version 4.4.0 compiler to create BNC for Windows. After installation your <cite>bnc.exe</cite> file shows up e.g. under &#8216;All Programs&#8217;.</p>
     1283<p class="rubric">Linux Build</p>
     1284<p>Static library and shared library builds for BNC are provided for a selection of Linux distributions. Download the ZIP archive for a version which fits to your Linux system, unzip the archive and run the included BNC binary. A static build would be sufficient in case you do not want BNC to plot PPP results with Google Map (GM) or OpenStreetMap (OSM) maps in the background. GM/OSM usage requires BNC builds from shared libraries.</p>
     1285<p class="rubric">Mac OS X Build</p>
     1286<p>A shared library <code class="docutils literal"><span class="pre">Disk</span> <span class="pre">iMaGe</span></code> (DMG) file is provided for BNC on OS X systems; it also comes in a ZIP archive. The DMG file format is used in the Mac for distributing software. Mac install packages appear as a virtual disk drive. After download, when the DMG file icon is double clicked, the virtual drive is &#8216;mounted&#8217; on the desktop. Install BNC by dragging the <code class="docutils literal"><span class="pre">bnc.app</span></code> icon to your <code class="docutils literal"><span class="pre">Applications</span></code> folder. To start BNC, double click on <code class="docutils literal"><span class="pre">Applications/bnc.app</span></code>. You could also start BNC via Command Line Interface (CLI) using command <code class="docutils literal"><span class="pre">Applications/bnc.app/Contents/MacOS/bnc</span></code>.</p>
     1287</div>
     1288<div class="section" id="compilation">
     1289<span id="index-0"></span><h3>Compilation<a class="headerlink" href="#compilation" title="Permalink to this headline">¶</a></h3>
     1290<p>BNC has been written as Open Source and published under GNU General Public License (GPL). The latest source code can be checked out from Subversion repository <a class="reference external" href="http://software.rtcm-ntrip.org/svn/trunk/BNC">http://software.rtcm-ntrip.org/svn/trunk/BNC</a>. A ZIP archive available from <a class="reference external" href="http://igs.bkg.bund.de/ntrip/download">http://igs.bkg.bund.de/ntrip/download</a> provides the source code for BNC Version 2.12, developed using Qt Version 4.8.5.</p>
     1291<p>The following describes how you can produce your own builds of BNC on MS Windows, Linux, and Mac systems. It is likely that BNC can also be compiled on other systems where a GNU compiler and Qt Version 4.8.5 or any later version is installed.</p>
     1292<div class="section" id="static-versus-shared-libraries">
     1293<span id="index-1"></span><h4>Static versus Shared Libraries<a class="headerlink" href="#static-versus-shared-libraries" title="Permalink to this headline">¶</a></h4>
     1294<p>You can produce static or shared library builds of BNC. Static builds are sufficient in case you do not want BNC to produce track maps on top of Google Map (GM) or OpenStreetMap (OSM). GM/OSM usage would require the QtWebKit library which can only be part of BNC builds from shared Qt libraries. Hence, having a shared library Qt installation available is a precondition for producing a shared library build of BNC.</p>
     1295</div>
     1296<div class="section" id="ms-windows-systems-shared-library">
     1297<span id="index-2"></span><h4>MS Windows Systems, Shared Library<a class="headerlink" href="#ms-windows-systems-shared-library" title="Permalink to this headline">¶</a></h4>
     1298<p>This explains how to install a shared Qt 4.8.5 library on MS Windows systems to then create your own shared build of BNC.</p>
     1299<p>Supposing that &#8216;Secure Socket Layer (SSL)&#8217; is not available on you system, you should install OpenSSL libraries in <code class="docutils literal"><span class="pre">C:\OpenSSL-Win32</span></code>. They are available e.g. from <a class="reference external" href="http://igs.bkg.bund.de/root_ftp/NTRIP/software/Win32OpenSSL-1_0_1e.exe">http://igs.bkg.bund.de/root_ftp/NTRIP/software/Win32OpenSSL-1_0_1e.exe</a>. See <a class="reference external" href="http://slproweb.com/products/Win32OpenSSL.html">http://slproweb.com/products/Win32OpenSSL.html</a> for other SSL resources. Ignore possibly occurring comments about missing components during installation.</p>
     1300<ol class="arabic simple">
     1301<li>Download MinGW compiler Version 4.4.0 e.g. from <a class="reference external" href="http://igs.bkg.bund.de/root_ftp/NTRIP/software/MinGW-gcc440_1.zip">http://igs.bkg.bund.de/root_ftp/NTRIP/software/MinGW-gcc440_1.zip</a>.</li>
     1302<li>Unzip the ZIP archive and move its contents to a directory <code class="docutils literal"><span class="pre">C:\MinGW</span></code>. Now you can do either (4) or (5, 6, 8, 9, 10). Following (4) is suggested.</li>
     1303<li>Download file <code class="docutils literal"><span class="pre">qt-win-opensource-4.8.5-mingw.exe</span></code> (317 MB) e.g. from <a class="reference external" href="https://download.qt.io/archive/qt/4.8/4.8.5/">https://download.qt.io/archive/qt/4.8/4.8.5/</a>.</li>
     1304<li>Execute this file to install a pre-compiled shared Qt library.</li>
     1305<li>Download file <code class="docutils literal"><span class="pre">qt-everywhere-opensource-src-4.8.5.zip</span></code> (269 MB) e.g. from <a class="reference external" href="https://download.qt.io/archive/qt/4.8/4.8.5/">https://download.qt.io/archive/qt/4.8/4.8.5/</a>.</li>
     1306<li>Unzip the ZIP archive and move the contents of the contained directory into a directory <code class="docutils literal"><span class="pre">C:\Qt\4.8.5</span></code>.</li>
     1307<li>Create somewhere a file <code class="docutils literal"><span class="pre">QtEnv.bat</span></code> with the following content</li>
    7101308</ol>
    711 
    712 <p>
    713 Steps (11)-(15) can be repeated whenever a BNC update becomes available. Running bnc.exe on a windows system requires (1) when using the NTRIP Version 2s option for stream transfer over TLS/SSL.
    714 </p>
    715 
    716 <p>
    717 <b>Linux Systems</b><br>
    718 On Linux systems you may use the following procedure to install a shared Qt version 4.8.5 library:
    719 </p>
    720 
    721 <p>
    722 Download file 'qt-everywhere-opensource-src-4.8.5.tar.gz' (230 MB) available from <u>https://download.qt.io/archive/qt/4.8/4.8.5/</u>. Unzip file, extract tar archive and change to directory 'qt-everywhere-opensource-src-4.8.5'. Run commands
    723 <pre>
    724   ./configure -fast -webkit -nomake examples -nomake tutorial
    725               -prefix /usr/local/Trolltech/Qt-4.8.5
    726   gmake
    727   gmake install
    728 </pre>
    729 </p>
    730 
    731 <p>
    732 Qt will be installed into directory /usr/local/Trolltech/Qt-4.8.5. To reconfigure, run 'gmake confclean' and 'configure'. Note that the '-prefix' option allows you to specify a directory for saving the Qt libraries. This ensures that you do not run into conflicts with other
    733 Qt installations on your host. Note further that the following two lines<pre>
    734   export QTDIR="/usr/local/Trolltech/Qt-4.8.5"
    735   export PATH="$QTDIR/bin:$PATH"</pre>
    736 
    737 need to be added either to $HOME/.bash_profile or $HOME/.bashrc. Once that is done, logout/login and start using Qt 4.8.5.
    738 </p>
    739 <p>
    740 To compile the BNC program, you first download the source code from SVN repository <u>http://software.rtcm-ntrip.org/svn/trunk/BNC</u>. Go to directory BNC and run the following commands: <pre>
    741   qmake bnc.pro
    742   make
    743 </pre>
    744 You will find a build of BNC in directory BNC.
    745 </p>
    746 <p>
    747 <b>Mac OS X Systems</b><br>
    748 
    749 <u>Xcode and Qt Installation</u><br>
    750 Xcode and Qt are required to compile BNC on OS X. Both tools are freely available. Xcode can be downloaded from the App Store or the Apple Developer Connection website. Once installed, run Xcode, go to 'Preferences->Downloads' and install the Command Line Tools component. Qt can be downloaded from the Qt Project website. We suggest installing version 4.8.4 or higher. The Qt libraries for Mac can be downloaded from <u>http://www.qt.io/download</u>. Once downloaded, mount the disk image, run the Qt.mpkg package and follow instructions from the installation wizard.
    751 </p>
    752 
    753 <p>
    754 <u>Compiling BNC</u><br>
    755 The version of qmake supplied in the Qt binary package is configured to use the macx-xcode specification. This can be overridden with the '-spec macx-g++' option which makes it possible to use qmake to create a Makefile to be used by 'make'.
    756 </p>
    757 <p>
    758 From the directory where bnc.pro is located, run 'qmake' to create the Makefile and then 'make' to compile the binary.
    759 <pre>
    760    qmake -spec macx-g++ bnc.pro
    761    make
    762 </pre>
    763 Refer to the following webpage for further information: <u>http://doc.qt.io/qt-4.8/qmake-platform-notes.html</u>.
    764 </p>
    765 
    766 <p>
    767 <u>Bundle Deployment</u><br>
    768 When distributing BNC it is necessary to bundle in all related Qt resources in the package. The Mac Deployment Tool has been designed to automate the process of creating a deployable application bundle that contains the Qt libraries as private frameworks. To use it, issue the following commands where bnc.app is located.
    769 <pre>
    770    macdeployqt bnc.app -dmg
    771 </pre>
    772 Refer to the following webpage for further information: <u>http://doc.qt.io/qt-4.8/deployment-mac.html</u>.
    773 </p>
    774 <p>
    775 Once a DMG file for BNC is created, you can double click it and install BNC by dragging the 'bnc.app' icon to your 'Applications' folder. To start BNC, double click on '/Aplications/bnc.app'.
    776 </p>
    777 
    778 <p><h4>1.6 <a name="introConf">Configuration</h4></p>
    779 <p>
    780 As a default, configuration files for running BNC on Unix/Linux/Mac OS X systems are saved in directory '${HOME}/.config/BKG'. On Windows systems, they are typically saved in directory 'C:/Documents and Settings/Username/.config/BKG'. The default configuration filename is 'BNC.bnc'.</p>
    781 <p>
    782 The default filename 'BNC.bnc' can be changed and the file content can easily be edited. On graphical user interfaces it is possible to Drag &amp; Drop a configuration file icon to start BNC (not on Mac OS X systems). It is also possible to start and configure BNC via command line. Some configuration options can be changed on-the-fly. See annexed 'Command Line Help' for a complete set of configuration options.
    783 </p>
    784 
    785 <p>
    786 BNC maintains configuration options at three different levels:
    787 </p>
    788 
    789 <ol type=b>
     1309<div class="highlight-console"><div class="highlight"><pre><span class="go">set QTDIR=C:\Qt\4.8.5</span>
     1310<span class="go">set PATH=%PATH%;C:\MinGW\bin;C:\Qt\4.8.5\bin</span>
     1311<span class="go">set QMAKESPEC=C:\Qt\4.8.5\mkspecs\win32-g++</span>
     1312</pre></div>
     1313</div>
     1314<ol class="arabic simple" start="8">
     1315<li>Open a command line window and execute file <code class="docutils literal"><span class="pre">QtEnv.bat</span></code>.</li>
     1316<li>Go to directory Qt directory and configure Qt using command</li>
     1317</ol>
     1318<div class="highlight-console"><div class="highlight"><pre><span class="go">cd Qt\4.8.5</span>
     1319<span class="go">configure -fast -webkit -release -nomake examples -nomake tutorial</span>
     1320<span class="go">          -openssl -I C:\OpenSSL-Win32\include</span>
     1321</pre></div>
     1322</div>
     1323<ol class="arabic simple" start="10">
     1324<li>Compile Qt using command <code class="docutils literal"><span class="pre">mingw32-make</span></code>. This may take quite a long time. Don&#8217;t worry if the compilation process runs into a problem after some time. It is likely that the libraries you require are already generated at that time. Should you want to reconfiguring Qt following steps (8)-(10) you first need to clean the previous configuration using command <code class="docutils literal"><span class="pre">mingw32-make</span> <span class="pre">confclean</span></code>. Run command <code class="docutils literal"><span class="pre">mingw32-make</span> <span class="pre">clean</span></code> to delete previously compiled source code.</li>
     1325<li>Download latest BNC from SVN repository <a class="reference external" href="http://software.rtcm-ntrip.org/svn/trunk/BNC">http://software.rtcm-ntrip.org/svn/trunk/BNC</a>.</li>
     1326<li>Open command line window and execute file <code class="docutils literal"><span class="pre">QtEnv.bat</span></code>, see (7).</li>
     1327<li>Go to directory BNC and enter command <code class="docutils literal"><span class="pre">qmake</span> <span class="pre">bnc.pro</span></code>.</li>
     1328<li>Enter command <code class="docutils literal"><span class="pre">mingw32-make</span></code>.</li>
     1329<li>Find binary file <code class="docutils literal"><span class="pre">bnc.exe</span></code> in directory named <code class="docutils literal"><span class="pre">src</span></code>.</li>
     1330<li>Extend the Windows environment variable PATH by <code class="docutils literal"><span class="pre">C:\Qt\4.8.5\bin</span></code>.</li>
     1331</ol>
     1332<p>Steps (11)-(15) can be repeated whenever a BNC update becomes available. Running <code class="docutils literal"><span class="pre">bnc.exe</span></code> on a windows system requires (1) when using the NTRIP Version 2s option for stream transfer over TLS/SSL.</p>
     1333</div>
     1334<div class="section" id="linux-systems">
     1335<span id="index-3"></span><h4>Linux Systems<a class="headerlink" href="#linux-systems" title="Permalink to this headline">¶</a></h4>
     1336<p>On Linux systems you may use the following procedure to install a shared Qt version 4.8.5 library:</p>
     1337<p>Download file <code class="docutils literal"><span class="pre">qt-everywhere-opensource-src-4.8.5.tar.gz</span></code> (230 MB) available from <a class="reference external" href="https://download.qt.io/archive/qt/4.8/4.8.5/">https://download.qt.io/archive/qt/4.8/4.8.5/</a>. Unzip file, extract tar archive and change to directory <code class="docutils literal"><span class="pre">qt-everywhere-opensource-src-4.8.5</span></code>. Run commands</p>
     1338<div class="highlight-console"><div class="highlight"><pre><span class="go">./configure -fast -webkit -nomake examples -nomake tutorial</span>
     1339<span class="go">            -prefix /usr/local/Trolltech/Qt-4.8.5</span>
     1340<span class="go">gmake</span>
     1341<span class="go">gmake install</span>
     1342</pre></div>
     1343</div>
     1344<p>Qt will be installed into directory <code class="docutils literal"><span class="pre">/usr/local/Trolltech/Qt-4.8.5</span></code>. To reconfigure, run <code class="docutils literal"><span class="pre">gmake</span> <span class="pre">confclean</span></code> and <code class="docutils literal"><span class="pre">configure</span></code>. Note that the <code class="docutils literal"><span class="pre">-prefix</span></code> option allows you to specify a directory for saving the Qt libraries. This ensures that you do not run into conflicts with other Qt installations on your host. Note further that the following two lines</p>
     1345<div class="highlight-console"><div class="highlight"><pre><span class="go">export QTDIR=&quot;/usr/local/Trolltech/Qt-4.8.5&quot;</span>
     1346<span class="go">export PATH=&quot;$QTDIR/bin:$PATH&quot;</span>
     1347</pre></div>
     1348</div>
     1349<p>need to be added either to <code class="docutils literal"><span class="pre">$HOME/.bash/profile</span></code> or <code class="docutils literal"><span class="pre">$HOME/.bashrc</span></code>. Once that is done, logout/login and start using Qt 4.8.5.</p>
     1350<p>To compile the BNC program, you first download the source code from SVN repository <a class="reference external" href="http://software.rtcm-ntrip.org/svn/trunk/BNC">http://software.rtcm-ntrip.org/svn/trunk/BNC</a>. Go to directory BNC and run the following commands:</p>
     1351<div class="highlight-console"><div class="highlight"><pre><span class="go">qmake bnc.pro</span>
     1352<span class="go">make</span>
     1353</pre></div>
     1354</div>
     1355<p>You will find a build of BNC in directory BNC.</p>
     1356</div>
     1357<div class="section" id="mac-os-x-systems">
     1358<span id="index-4"></span><h4>Mac OS X Systems<a class="headerlink" href="#mac-os-x-systems" title="Permalink to this headline">¶</a></h4>
     1359<div class="section" id="xcode-and-qt-installation">
     1360<h5>Xcode and Qt installation<a class="headerlink" href="#xcode-and-qt-installation" title="Permalink to this headline">¶</a></h5>
     1361<p>Xcode and Qt are required to compile BNC on OS X. Both tools are freely available. Xcode can be downloaded from the App Store or the Apple Developer Connection website. Once installed, run Xcode, go to &#8216;Preferences-&gt;Downloads&#8217; and install the Command Line Tools component. Qt can be downloaded from the Qt Project website. We suggest installing version 4.8.4 or higher. The Qt libraries for Mac can be downloaded from <a class="reference external" href="http://www.qt.io/download">http://www.qt.io/download</a>. Once downloaded, mount the disk image, run the Qt.mpkg package and follow instructions from the installation wizard.</p>
     1362</div>
     1363<div class="section" id="compilation-of-bnc">
     1364<h5>Compilation of bnc<a class="headerlink" href="#compilation-of-bnc" title="Permalink to this headline">¶</a></h5>
     1365<p>The version of qmake supplied in the Qt binary package is configured to use the macx-xcode specification. This can be overridden with the <code class="docutils literal"><span class="pre">-spec</span> <span class="pre">macx-g++</span></code> option which makes it possible to use <code class="docutils literal"><span class="pre">qmake</span></code> to create a <code class="docutils literal"><span class="pre">Makefile</span></code> to be used by <code class="docutils literal"><span class="pre">make</span></code>.</p>
     1366<p>From the directory where bnc.pro is located, run <code class="docutils literal"><span class="pre">qmake</span></code> to create the <code class="docutils literal"><span class="pre">Makefile</span></code> and then <code class="docutils literal"><span class="pre">make</span></code> to compile the binary:</p>
     1367<div class="highlight-console"><div class="highlight"><pre><span class="go">qmake -spec macx-g++ bnc.pro</span>
     1368<span class="go">make</span>
     1369</pre></div>
     1370</div>
     1371<p>Refer to the following webpage for further information: <a class="reference external" href="http://doc.qt.io/qt-4.8/qmake-platform-notes.html">http://doc.qt.io/qt-4.8/qmake-platform-notes.html</a>.</p>
     1372</div>
     1373<div class="section" id="bundle-deployment">
     1374<h5>Bundle Deployment<a class="headerlink" href="#bundle-deployment" title="Permalink to this headline">¶</a></h5>
     1375<p>When distributing BNC it is necessary to bundle in all related Qt resources in the package. The Mac Deployment Tool has been designed to automate the process of creating a deployable application bundle that contains the Qt libraries as private frameworks. To use it, issue the following commands where <code class="docutils literal"><span class="pre">bnc.app</span></code> is located.</p>
     1376<div class="highlight-console"><div class="highlight"><pre><span class="go">macdeployqt bnc.app -dmg</span>
     1377</pre></div>
     1378</div>
     1379<p>Refer to the following webpage for further information: <a class="reference external" href="http://doc.qt.io/qt-4.8/deployment-mac.html">http://doc.qt.io/qt-4.8/deployment-mac.html</a>.</p>
     1380<p>Once a DMG file for BNC is created, you can double click it and install BNC by dragging the <code class="docutils literal"><span class="pre">bnc.app</span></code> icon to your <code class="docutils literal"><span class="pre">Applications</span></code> folder. To start BNC, double click on <code class="docutils literal"><span class="pre">Applications/bnc.app</span></code>.</p>
     1381</div>
     1382</div>
     1383</div>
     1384</div>
     1385<span id="document-chapter4"></span><div class="section" id="configuration">
     1386<h2>Configuration<a class="headerlink" href="#configuration" title="Permalink to this headline">¶</a></h2>
     1387<div class="section" id="general-procedure">
     1388<h3>General procedure<a class="headerlink" href="#general-procedure" title="Permalink to this headline">¶</a></h3>
     1389<p>As a default, configuration files for running BNC on Unix/Linux/Mac OS X systems are saved in directory <code class="docutils literal"><span class="pre">$HOME/.config/BKG</span></code>. On Windows systems, they are typically saved in directory <code class="docutils literal"><span class="pre">C:/Documents</span> <span class="pre">and</span> <span class="pre">Settings/Username/.config/BKG</span></code>. The default configuration filename is <code class="docutils literal"><span class="pre">BNC.bnc</span></code>.</p>
     1390<p>The default filename <code class="docutils literal"><span class="pre">BNC.bnc</span></code> can be changed and the file content can easily be edited. On Graphical User Interfaces (GUI) it is possible to Drag &amp; Drop a configuration file icon to start BNC (not on Mac OS X systems). It is also possible to start and configure BNC via command line. Some configuration options can be changed on-the-fly. See annexed Command Line Help for a complete set of configuration options.</p>
     1391<p>BNC maintains configuration options at three different levels:</p>
     1392<ol class="arabic simple">
    7901393<li>GUI, input fields level</li>
    7911394<li>Active configuration level</li>
    7921395<li>Configuration file, disk level</li>
    7931396</ol>
    794 
    795 <p><img src="IMG/screenshot31.png"/></p>
    796 <p><u>Figure 6:</u> Management of configuration options in BNC:<br>
    797 <table>
    798 <tr><td>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </td><td>Left:</td><td>BNC in graphics mode; active configuration options are introduced through GUI input fields and finally saved on disk</td></tr>
    799 <tr><td>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </td><td>Middle:</td><td>BNC in 'no window' mode; active configuration options are read from disk</td></tr>
    800 <tr><td>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </td><td>Right:</td><td>BNC in 'no window' mode without configuration file; default configuration options can be overwritten via command line options</td></tr>
     1397<div class="figure" id="fig-6">
     1398<a class="reference internal image-reference" href="_images/fig_6.png"><img alt="_images/fig_6.png" src="_images/fig_6.png" style="width: 859.0px; height: 313.0px;" /></a>
     1399</div>
     1400<table border="1" class="docutils">
     1401<colgroup>
     1402<col width="5%" />
     1403<col width="95%" />
     1404</colgroup>
     1405<tbody valign="top">
     1406<tr class="row-odd"><td>Left</td>
     1407<td>BNC in graphics mode; active configuration options are introduced through GUI input fields and finally saved on disk</td>
     1408</tr>
     1409<tr class="row-even"><td>Middle</td>
     1410<td>BNC in &#8216;no window&#8217; mode; active configuration options are read from disk</td>
     1411</tr>
     1412<tr class="row-odd"><td>Right</td>
     1413<td>BNC in &#8216;no window&#8217; mode without configuration file; default configuration options can be overwritten via command line options</td>
     1414</tr>
     1415</tbody>
    8011416</table>
    802 
    803 <p>
    804 Configuration options are usually specified using GUI input fields (1) after launching BNC. When hitting the 'Start' button, configuration options are transferred one level down to become BNC's active configuration (2), allowing the program to begin its operation. Pushing the 'Stop' button ends data processing so that the user can finally terminate BNC through 'File'->'Quit'->'Save Options' which saves processing options in a configuration file to disk (3). It is important to understand that:
    805 <ul>
     1417<blockquote>
     1418<div>Management of configuration options in BNC.</div></blockquote>
     1419<p>Configuration options are usually specified using GUI input fields 1 after launching BNC. When hitting the &#8216;Start&#8217; button, configuration options are transferred one level down to become BNC&#8217;s active configuration 2, allowing the program to begin its operation. Pushing the &#8216;Stop&#8217; button ends data processing so that the user can finally terminate BNC through &#8216;File&#8217;-&gt;&#8217;Quit&#8217;-&gt;&#8217;Save Options&#8217; which saves processing options in a configuration file to disk 3. It is important to understand that:</p>
     1420<ul class="simple">
    8061421<li>Active configuration options (2) are independent from GUI input fields and configuration file content.</li>
    8071422<li>Hence changing configuration options at GUI level (1) while BNC is already processing data does not influence a running job.</li>
    808 <li>Editing configuration options at disk level (3) while BNC is already processing data does also not influence a running job. However, there are two exceptions which force BNC to update certain active options on-the-fly:</li>
     1423<li>Editing configuration options at disk level (3) while BNC is already processing data does also not influence a running job. However, there are two exceptions which force BNC to update certain active options on-the-fly:<ul>
     1424<li>Pushing the &#8216;Reread &amp; Save Configuration&#8217; button lets BNC immediately reread its configuration from GUI input fields to make them active configuration options. Then BNC saves them on disk.</li>
     1425<li>Specifying the &#8216;Reread configuration&#8217; option lets BNC reread its configuration from disk at pre-defined intervals.</li>
     1426</ul>
     1427</li>
     1428<li>A specific BNC configuration can be started in &#8216;no window&#8217; mode from scratch without a configuration file if options for the active configuration level (2) are provided via command line.</li>
     1429</ul>
     1430</div>
     1431<div class="section" id="examples-configuration-files">
     1432<h3>Examples configuration files<a class="headerlink" href="#examples-configuration-files" title="Permalink to this headline">¶</a></h3>
     1433<p>BNC comes with a number of configuration examples which can be used on all operating systems. Copy the complete directory <code class="docutils literal"><span class="pre">Example_Configs</span></code> which comes with the software to your disc. It includes sub-directories <code class="docutils literal"><span class="pre">Input</span></code> and <code class="docutils literal"><span class="pre">Output</span></code>. There are several ways to start BNC using one of the example configurations:</p>
     1434<ul class="simple">
     1435<li>On graphical systems (except for Mac systems), you may use the computer mouse to &#8216;drag&#8217; a configuration file icon and &#8216;drop&#8217; it on top of BNC&#8217;s program icon.</li>
     1436<li>You could also start BNC using a command line for naming a specific configuration file (suggested e.g. for Mac systems):  <code class="docutils literal"><span class="pre">/Applications/bnc.app/Contents/MacOS/bnc</span> <span class="pre">--conf</span> <span class="pre">&lt;configFileName&gt;</span></code></li>
     1437<li>On non-graphical systems or when running BNC in batch mode in the background you may start the program using a command line with a configuration file option in &#8216;no window&#8217; mode (example for Windows systems): <code class="docutils literal"><span class="pre">bnc.exe</span> <span class="pre">--conf</span> <span class="pre">&lt;configFileName&gt;</span> <span class="pre">--nw</span></code></li>
     1438</ul>
     1439<p>Although it&#8217;s not a must, we suggest that you always create BNC configuration files with filename extension <code class="docutils literal"><span class="pre">.bnc</span></code>.</p>
     1440<p>We furthermore suggest for convenience reasons that you configure your system to automatically start BNC when you double-click a file with the filename extension <code class="docutils literal"><span class="pre">.bnc</span></code>. The following describes what to do on MS Windows systems to associate the BNC program to such configuration files:</p>
     1441<ol class="arabic simple">
     1442<li>Right-click a file that has the extension <code class="docutils literal"><span class="pre">.bnc</span></code> and then click &#8216;Open&#8217;. If the &#8216;Open&#8217; command is not available, click &#8216;Open With&#8217; or double-click the file.</li>
     1443<li>Windows displays a dialog box that says that the system cannot open this file. The dialog box offers several options for selecting a program.</li>
     1444<li>Click &#8216;Select the program from a list&#8217;, and then click &#8216;OK&#8217;.</li>
     1445<li>The &#8216;Open With&#8217; dialog box is displayed. Click &#8216;Browse&#8217;, locate and then click the BNC program, and then click &#8216;Open&#8217;.</li>
     1446<li>Click to select the &#8216;Always use the selected program to open this kind of file&#8217; check box.</li>
     1447<li>Click &#8216;OK&#8217;.</li>
     1448</ol>
     1449<p>Some of the presented example configurations contain a user ID &#8216;Example&#8217; with a password &#8216;Configs&#8217; for accessing a few GNSS streams from public Ntrip Broadcasters. This free generic account is arranged for convenience reasons only. Please be so kind as to replace the generic account details as well as the place holder&#8217;s &#8216;User&#8217; and &#8216;Pass&#8217; by the personal user ID and password you receive following an online registration through <a class="reference external" href="http://register.rtcm-ntrip.org">http://register.rtcm-ntrip.org</a>.</p>
     1450<p>Note that the account for an Ntrip Broadcaster is usually limited to pulling a specified maximum number of streams at the same time. As running some of the example configurations requires pulling several streams, it is suggested to make sure that you do not exceed your account&#8217;s limits.</p>
     1451<p>Make also sure that sub-directories &#8216;Input&#8217; and &#8216;Output&#8217; which are part of the example configurations exist on your system or adjust the affected example configuration options according to your needs.</p>
     1452<p>Some BNC options require Antenna Phase Center variations as made available from IGS through so-called ANTEX files at <a class="reference external" href="ftp://igs.org/pub/station/general">ftp://igs.org/pub/station/general</a>. An example ANTEX file <code class="docutils literal"><span class="pre">igs08.atx</span></code> is part of the BNC package for convenience.</p>
     1453<p>The example configurations assume that no proxy protects your BNC host. Should a proxy be operated in front of BNC then you need to introduce its name or IP and port number in the &#8216;Network&#8217; panel.</p>
     1454</div>
     1455<div class="section" id="list-of-example-configuration-files">
     1456<h3>List of example configuration files<a class="headerlink" href="#list-of-example-configuration-files" title="Permalink to this headline">¶</a></h3>
     1457<p>You should be able to run all configuration file examples without changing contained options. However, configuration &#8216;Upload.bnc&#8217; is an exception because it requires an input stream from a connected network engine.</p>
     1458<ol class="arabic simple">
     1459<li>Configuration File <code class="docutils literal"><span class="pre">RinexObs.bnc</span></code></li>
     1460</ol>
     1461<blockquote>
     1462<div>Purpose: Convert RTCM streams to RINEX Observation files. The configuration pulls streams from Ntrip Broadcasters using Ntrip Version 1 to generate 15min 1Hz RINEX Version 3 Observation files. See <a class="reference external" href="http://igs.bkg.bund.de/ntrip/observations">http://igs.bkg.bund.de/ntrip/observations</a> for observation stream resources.</div></blockquote>
     1463<ol class="arabic simple" start="2">
     1464<li>Configuration File <code class="docutils literal"><span class="pre">RinexEph.bnc</span></code></li>
     1465</ol>
     1466<blockquote>
     1467<div>Purpose: Convert a RTCM stream with navigation messages to RINEX Navigation files. The configuration pulls a RTCM Version 3 stream with Broadcast Ephemeris coming from the real-time EUREF and IGS networks and saves hourly RINEX Version 3 Navigation files. See <a class="reference external" href="http://igs.bkg.bund.de/ntrip/ephemeris">http://igs.bkg.bund.de/ntrip/ephemeris</a> for further real-time Broadcast Ephemeris resources.</div></blockquote>
     1468<ol class="arabic simple" start="3">
     1469<li>Configuration File <code class="docutils literal"><span class="pre">BrdcCorr.bnc</span></code></li>
     1470</ol>
     1471<blockquote>
     1472<div>Purpose: Save Broadcast Corrections from RTCM SSR messages in hourly plain ASCII files. See <a class="reference external" href="http://igs.bkg.bund.de/ntrip/orbits">http://igs.bkg.bund.de/ntrip/orbits</a> for various real-time IGS or EUREF orbit/clock correction products.</div></blockquote>
     1473<ol class="arabic simple" start="4">
     1474<li>Configuration File <code class="docutils literal"><span class="pre">RinexConcat.bnc</span></code></li>
     1475</ol>
     1476<blockquote>
     1477<div>Purpose: Concatenate several RINEX Version 3 files to produce one compiled file and edit the marker name in the file header. The sampling interval is set to 30 seconds. See section &#8216;RINEX Editing &amp; QC&#8217; in the documentation for examples on how to call BNC from command line in &#8216;no window&#8217; mode for RINEX file editing, concatenation and quality check.</div></blockquote>
     1478<ol class="arabic simple" start="5">
     1479<li>Configuration File <code class="docutils literal"><span class="pre">RinexQC.bnc</span></code></li>
     1480</ol>
     1481<blockquote>
     1482<div>Purpose: Check the quality of a RINEX Version 3 file by means of a multipath analysis. Results are saved on disk in terms of a plot in PNG format. See section &#8216;RINEX Editing &amp; QC&#8217; in the documentation for examples on how to call BNC from command line in &#8216;no window&#8217; mode for RINEX file editing, concatenation and quality check.</div></blockquote>
     1483<ol class="arabic simple" start="6">
     1484<li>Configuration File <code class="docutils literal"><span class="pre">RTK.bnc</span></code></li>
     1485</ol>
     1486<blockquote>
     1487<div>Purpose: Feed a serially connected receiver with observations from a nearby reference station for conventional RTK. The stream is scanned for RTCM messages. Message type numbers and latencies of incoming observations are reported in BNC&#8217;s logfile.</div></blockquote>
     1488<ol class="arabic simple" start="7">
     1489<li>Configuration File <code class="docutils literal"><span class="pre">FeedEngine.bnc</span></code></li>
     1490</ol>
     1491<blockquote>
     1492<div>Purpose: Feed a real-time GNSS engine with observations from remote reference stations. The configuration pulls a single stream from an Ntrip Broadcaster. You could also pull several streams from different casters. Incoming observations are decoded, synchronized, output through a local IP port and also saved into a file. Failure and recovery thresholds are specified to inform about outages.</div></blockquote>
     1493<ol class="arabic simple" start="8">
     1494<li>Configuration File <code class="docutils literal"><span class="pre">PPP.bnc</span></code></li>
     1495</ol>
     1496<blockquote>
     1497<div>Purpose: Precise Point Positioning from observations of a rover receiver. The configuration reads RTCM Version 3 observations, a Broadcast Ephemeris stream and a stream with Broadcast Corrections. Positions are saved in the logfile.</div></blockquote>
     1498<ol class="arabic simple" start="9">
     1499<li>Configuration File <code class="docutils literal"><span class="pre">PPPNet.bnc</span></code></li>
     1500</ol>
     1501<blockquote>
     1502<div>Purpose: Precise Point Positioning for several rovers or receivers from an entire network of reference stations in one BNC job. The possible maximum number of PPP solutions per job depends on the processing power of the hosting computer. This example configuration reads two RTCM Version 3 observation streams, a Broadcast Ephemeris stream and a stream with Broadcast Corrections. PPP Results for the two stations are saved in PPP logfiles.</div></blockquote>
     1503<ol class="arabic simple" start="10">
     1504<li>Configuration File <code class="docutils literal"><span class="pre">PPPQuickStart.bnc</span></code></li>
     1505</ol>
     1506<blockquote>
     1507<div>Purpose: Precise Point Positioning in Quick-Start mode from observations of a static receiver with precisely known position. The configuration reads RTCM Version 3 observations, Broadcast Corrections and a Broadcast Ephemeris stream. Positions are saved in NMEA format on disc. They are also output through IP port for real-time visualization with tools like RTKPLOT. Positions are saved in the logfile.</div></blockquote>
     1508<ol class="arabic simple" start="11">
     1509<li>Configuration File <code class="docutils literal"><span class="pre">PPPPostProc.bnc</span></code></li>
     1510</ol>
     1511<blockquote>
     1512<div>Purpose: Precise Point Positioning in post processing mode. BNC reads RINEX Version 3 Observation and Navigation files and a Broadcast Correction file. PPP processing options are set to support the Quick-Start mode. The output is saved in a specific post processing logfile and contains coordinates derived over time following the implemented PPP filter algorithm.</div></blockquote>
     1513<ol class="arabic simple" start="12">
     1514<li>Configuration File <code class="docutils literal"><span class="pre">PPPGoogleMaps.bnc</span></code></li>
     1515</ol>
     1516<blockquote>
     1517<div>Purpose: Track BNC&#8217;s point positioning solutions using Google Maps or OpenStreetMap as background. BNC reads a RINEX Observation file and a RINEX Navigation file to carry out a &#8216;Standard Point Positioning&#8217; solution in post processing mode. Although this is not a real-time application, it requires the BNC host to be connected to the Internet. Specify a computation speed, then hit button &#8216;Open Map&#8217; to open the track map, then hit &#8216;Start&#8217; to visualize receiver positions on top of GM/OSM maps.</div></blockquote>
     1518<ol class="arabic simple" start="13">
     1519<li>Configuration File <code class="docutils literal"><span class="pre">SPPQuickStartGal.bnc</span></code></li>
     1520</ol>
     1521<blockquote>
     1522<div>Purpose: Single Point Positioning in Quick-Start mode from observations of a static receiver with quite precisely known position. The configuration uses GPS, GLONASS and Galileo observations and a Broadcast Ephemeris stream.</div></blockquote>
     1523<ol class="arabic simple" start="14">
     1524<li>Configuration File <code class="docutils literal"><span class="pre">SaveSp3.bnc</span></code></li>
     1525</ol>
     1526<blockquote>
     1527<div>Purpose: Produces SP3 files from a Broadcast Ephemeris stream and a Broadcast Correction stream. The Broadcast Correction stream is formally introduced in BNC&#8217;s &#8216;Combine Corrections&#8217; table. Note that producing SP3 requires an ANTEX file because SP3 file content should be referred to CoM.</div></blockquote>
     1528<ol class="arabic simple" start="15">
     1529<li>Configuration File <code class="docutils literal"><span class="pre">Sp3ETRF2000PPP.bnc</span></code></li>
     1530</ol>
     1531<blockquote>
     1532<div>Purpose: Produce SP3 files from a Broadcast Ephemeris stream and a stream carrying ETRF2000 Broadcast Corrections. The Broadcast Correction stream is formally introduced in BNC&#8217;s &#8216;Combine Corrections&#8217; table. The configuration leads to a SP3 file containing orbits also referred to ETRF2000. Pulling in addition observations from a reference station at precisely known ETRF2000 position allows comparing an &#8216;INTERNAL&#8217; PPP solution with a known ETRF2000 reference coordinate.</div></blockquote>
     1533<ol class="arabic simple" start="16">
     1534<li>Configuration File <code class="docutils literal"><span class="pre">Upload.bnc</span></code></li>
     1535</ol>
     1536<blockquote>
     1537<div>Purpose: Upload orbits and clocks from a real-time GNSS engine to an Ntrip Broadcaster. For that the configuration reads precise orbits and clocks in RTNET format. It also reads a stream carrying Broadcast Ephemeris. BNC converts the orbits and clocks into Broadcast Corrections and encodes them to RTCM Version 3 SSR messages to finally upload them to an Ntrip Broadcaster. The Broadcast Correction stream is referred to satellite Antenna Phase Center (APC) and reference system IGS08. Orbits are saved on disk in SP3 format and clocks are saved in Clock RINEX format.</div></blockquote>
     1538<ol class="arabic simple" start="17">
     1539<li>Configuration File <code class="docutils literal"><span class="pre">Combi.bnc</span></code></li>
     1540</ol>
     1541<blockquote>
     1542<div>Purpose: Pull several streams carrying Broadcast Corrections and a Broadcast Ephemeris stream from an Ntrip Broadcaster to produce a combined Broadcast Correction stream. BNC encodes the combination product in RTCM Version 3 SSR messages and uploads that to an Ntrip Broadcaster. The Broadcast Correction stream is referred to satellite Antenna Phase Center (APC) and not to satellite Center of Mass (CoM). Its reference system is IGS08. Orbits are saved in SP3 format (referred to CoM) and clocks in Clock RINEX format.</div></blockquote>
     1543<ol class="arabic simple" start="18">
     1544<li>Configuration File <code class="docutils literal"><span class="pre">CombiPPP.bnc</span></code></li>
     1545</ol>
     1546<blockquote>
     1547<div>Purpose: This configuration equals the &#8216;Combi.bnc&#8217; configuration. However, the combined Broadcast Corrections are in addition used for an &#8216;INTERNAL&#8217; PPP solution based on observations from a static reference station with known precise coordinates. This allows a continuous quality check of the combination product through observing coordinate displacements.</div></blockquote>
     1548<ol class="arabic simple" start="19">
     1549<li>Configuration File <code class="docutils literal"><span class="pre">UploadEph.bnc</span></code></li>
     1550</ol>
     1551<blockquote>
     1552<div>Purpose: Pull a number of streams from reference stations to get hold of contained Broadcast Ephemeris messages. They are encoded to RTCM Version 3 format and uploaded for the purpose of providing a Broadcast Ephemeris stream with an update rate of 5 seconds.</div></blockquote>
     1553<ol class="arabic simple" start="20">
     1554<li>Configuration File <code class="docutils literal"><span class="pre">CompareSp3.bnc</span></code></li>
     1555</ol>
     1556<blockquote>
     1557<div>Purpose: Compare two SP3 files to calculate RMS values for orbit and clock differences. GPS satellite G05 and GLONASS satellite R18 are excluded from this comparison. Comparison results are saved in a logfile.</div></blockquote>
     1558<ol class="arabic simple" start="21">
     1559<li>Configuration File <code class="docutils literal"><span class="pre">Empty.bnc</span></code></li>
     1560</ol>
     1561<blockquote>
     1562<div>Purpose: Provide an empty example configuration file for BNC which only contains default settings.</div></blockquote>
     1563</div>
     1564<div class="section" id="command-line-configuration-options">
     1565<h3>Command Line configuration options<a class="headerlink" href="#command-line-configuration-options" title="Permalink to this headline">¶</a></h3>
     1566<p>The following configuration examples make use of BNC&#8217;s &#8216;Command Line Interface&#8217; (CLI). Configuration options are exclusively specified via command line. No configuration file is used. Examples are provided as shell scripts for a Linux system. They call BNC in &#8216;no window&#8217; batch mode (command line option <code class="docutils literal"><span class="pre">-nw</span></code>). The scripts expect &#8216;Example_Configs&#8217; to be the current working directory.</p>
     1567<ol class="arabic simple">
     1568<li>Shell Script <code class="docutils literal"><span class="pre">RinexQC.sh</span></code></li>
     1569</ol>
     1570<blockquote>
     1571<div>Purpose: Equals configuration file example <code class="docutils literal"><span class="pre">RinexQC.bnc</span></code>, checks the quality of a RINEX Version 3 file by means of a multipath analysis. Virtual X-Server &#8216;Xvfb&#8217; is operated while producing plot files in PNG format. BNC is offline. All results are saved on disk.</div></blockquote>
     1572<ol class="arabic simple" start="2">
     1573<li>Shell Script <code class="docutils literal"><span class="pre">RinexConcat.sh</span></code></li>
     1574</ol>
     1575<blockquote>
     1576<div>Purpose: Equals configuration file example <code class="docutils literal"><span class="pre">RinexConcat.bnc</span></code>, concatenates several RINEX Version 3 files to produce one compiled file and edit the marker name in the file header. The sampling interval is set to 30 seconds.</div></blockquote>
     1577<ol class="arabic simple" start="3">
     1578<li>Shell Script <code class="docutils literal"><span class="pre">RinexEph.sh</span></code></li>
     1579</ol>
     1580<blockquote>
     1581<div>Purpose: Equals configuration file example <code class="docutils literal"><span class="pre">RinexEph.bnc</span></code>, converts a RTCM stream with navigation messages to RINEX Navigation files. The configuration pulls a RTCM Version 3 stream with Broadcast Ephemeris coming from the real-time EUREF and IGS networks and saves hourly RINEX Version 3 Navigation files. BNC runs online until it&#8217;s terminated after 10 seconds. See <a class="reference external" href="http://igs.bkg.bund.de/ntrip/ephemeris">http://igs.bkg.bund.de/ntrip/ephemeris</a> for further real-time Broadcast Ephemeris resources.</div></blockquote>
     1582<ol class="arabic simple" start="4">
     1583<li>Shell Script <code class="docutils literal"><span class="pre">ScanLate.sh</span></code></li>
     1584</ol>
     1585<blockquote>
     1586<div>Purpose: Scan an observation stream for contained RTCM message types, print observation latencies. The output is saved in a logfile. Latencies are reported every 10 seconds. BNC runs online until it&#8217;s terminated after 20 seconds.</div></blockquote>
     1587<ol class="arabic simple" start="5">
     1588<li>Shell Script <code class="docutils literal"><span class="pre">RinexObs.sh</span></code></li>
     1589</ol>
     1590<blockquote>
     1591<div>Purpose: Equals configuration file example <code class="docutils literal"><span class="pre">RinexObs.bnc</span></code>, converts RTCM streams to RINEX Observation files. The configuration pulls streams from two Ntrip Broadcasters using Ntrip Version 1 to generate 15min 1Hz RINEX Version 3 Observation files. See <a class="reference external" href="http://igs.bkg.bund.de/ntrip/observations">http://igs.bkg.bund.de/ntrip/observations</a> for observation stream resources. BNC runs online until it&#8217;s terminated after 30 seconds.</div></blockquote>
     1592</div>
     1593<div class="section" id="command-line-configuration-options-overwriting-configuration-file-options">
     1594<h3>Command Line configuration options overwriting Configuration File options<a class="headerlink" href="#command-line-configuration-options-overwriting-configuration-file-options" title="Permalink to this headline">¶</a></h3>
     1595<p>For specific applications you may like to use your own set of standard configuration options from a configuration file and update some of its content via command line. When using a configuration file together with command line configuration options in one BNC call, the command line configuration options will always overrule options contained in the configuration file:</p>
     1596<p>Shell script <code class="docutils literal"><span class="pre">CompareSp3.sh</span></code>.</p>
     1597<p>Purpose: Equals configuration file example <code class="docutils literal"><span class="pre">CompareSp3.bnc</span></code>, compares two SP3 files to calculate RMS values for orbit and clock differences. However, instead of excluding GPS satellite G05 and GLONASS satellite R18 from the comparison as specified in <code class="docutils literal"><span class="pre">CompareSp3.bnc</span></code>, GPS satellite G06 and all GLONASS satellites are excluded via command line option. BNC runs offline. Comparison results are saved in a logfile.</p>
     1598</div>
     1599</div>
     1600<span id="document-chapter5"></span><span class="target" id="index-0"></span><div class="section" id="bnc-software-settings">
     1601<h2>BNC software settings<a class="headerlink" href="#bnc-software-settings" title="Permalink to this headline">¶</a></h2>
     1602<p>The general documentation approach is to create a separate chapter for each processing option in a sequence which follows the layout of BNC&#8217;s Graphical User Interface (GUI). The advantage is that searching for help by means of the document&#8217;s Table of Contents (TOC) is quite convenient.</p>
     1603<p>The following chapters describe how to set BNC program options. They explain the &#8216;Top Menu Bar&#8217;, the &#8216;Settings Canvas&#8217; with the processing options, the content of the &#8216;Streams Canvas&#8217; and &#8216;Logging Canvas&#8217;, and the &#8216;Bottom Menu Bar&#8217;.</p>
     1604<div class="section" id="top-menu-bar">
     1605<span id="index-1"></span><h3>Top Menu Bar<a class="headerlink" href="#top-menu-bar" title="Permalink to this headline">¶</a></h3>
     1606<p>The top menu bar allows selecting a font for the BNC windows, save configured options, or quit the program execution. It also provides access to the program&#8217;s documentation.</p>
     1607<div class="section" id="file">
     1608<h4>File<a class="headerlink" href="#file" title="Permalink to this headline">¶</a></h4>
     1609<p>The &#8216;File&#8217; button lets you</p>
     1610<ul class="simple">
     1611<li>Select an appropriate font. Use smaller font size if the BNC main window exceeds the size of your screen.</li>
     1612<li>Reread and save selected options in configuration file. When using &#8216;Reread &amp; Save Configuration&#8217; while BNC is already processing data, some configuration options become immediately effective on-the-fly without interrupting uninvolved threads while all of them are saved on disk. See section &#8216;Reread Configuration&#8217; for a list of on-the-fly changeable configuration options.</li>
     1613<li>Quit the BNC program.</li>
     1614</ul>
     1615</div>
     1616<div class="section" id="help">
     1617<h4>Help<a class="headerlink" href="#help" title="Permalink to this headline">¶</a></h4>
     1618<p>The &#8216;Help&#8217; button provides access to</p>
     1619<ul class="simple">
     1620<li>Help contents. You may keep the &#8216;Help Contents&#8217; window open while configuring BNC.</li>
     1621<li>A &#8216;Flow Chart&#8217; showing BNC linked to a real-time GNSS network engine such as RTNET.</li>
     1622<li>General information about BNC. Close the &#8216;About BNC&#8217; window to continue working with BNC.</li>
     1623</ul>
     1624</div>
     1625</div>
     1626<div class="section" id="network">
     1627<span id="index-2"></span><h3>Network<a class="headerlink" href="#network" title="Permalink to this headline">¶</a></h3>
     1628<p>You may need to specify a proxy when running BNC in a protected network. You may also like to use the Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL) cryptographic protocols for secure Ntrip communication over the Internet.</p>
     1629<div class="section" id="proxy-usage-in-a-protected-lan">
     1630<span id="index-3"></span><h4>Proxy - Usage in a protected LAN<a class="headerlink" href="#proxy-usage-in-a-protected-lan" title="Permalink to this headline">¶</a></h4>
     1631<p>If you are running BNC within a protected Local Area Network (LAN), you might need to use a proxy server to access the Internet. Enter your proxy server IP and port number in case one is operated in front of BNC. If you do not know the IP and port of your proxy server, check the proxy server settings in your Internet browser or ask your network administrator.</p>
     1632<p>Note that IP streaming is often not allowed in a LAN. In this case you need to ask your network administrator for an appropriate modification of the local security policy or for the installation of a TCP relay to the Ntrip Broadcaster you need to access. If this is not possible, you might need to run BNC outside your LAN on a host that has unobstructed connection to the Internet.</p>
     1633</div>
     1634<div class="section" id="ssl-transport-layer-security">
     1635<span id="index-4"></span><h4>SSL - Transport Layer Security<a class="headerlink" href="#ssl-transport-layer-security" title="Permalink to this headline">¶</a></h4>
     1636<p>Communication with an Ntrip Broadcaster over Secure Sockets Layer (SSL) as well as the download of RINEX skeleton files when available from HTTPS websites requires the exchange of client and/or server certificates. Specify the path to a directory where you save certificates on your system. You may like to check out <a class="reference external" href="http://software.rtcm-ntrip.org/wiki/Certificates">http://software.rtcm-ntrip.org/wiki/Certificates</a> for a list of known Ntrip Server certificates. You may also just try communication via SSL to check out whether this is supported by the involved Ntrip Broadcaster.</p>
     1637<p>SSL communication may involve queries coming from the Ntrip Broadcaster or from a HTTPS website hosting RINEX skeletons. Such a query could show up under BNC&#8217;s &#8216;Log&#8217; tab especially when self-signed SSL certificates are used. Example:</p>
     1638<div class="highlight-default"><div class="highlight"><pre><span class="n">SSL</span> <span class="n">Error</span>
     1639<span class="n">Server</span> <span class="n">Certificate</span> <span class="n">Issued</span> <span class="n">by</span><span class="p">:</span>
     1640<span class="n">GNSS</span> <span class="n">Data</span> <span class="n">Center</span>
     1641<span class="n">BKG</span> <span class="p">(</span><span class="n">Bundesamt</span> <span class="n">für</span> <span class="n">Geodäsie</span> <span class="n">und</span> <span class="n">Kartographie</span><span class="p">)</span>
     1642<span class="n">Cannot</span> <span class="n">be</span> <span class="n">verified</span>
     1643
     1644<span class="n">The</span> <span class="n">issuer</span> <span class="n">certificate</span> <span class="n">of</span> <span class="n">a</span> <span class="n">locally</span> <span class="n">looked</span> <span class="n">up</span> <span class="n">certificate</span> <span class="n">could</span> <span class="ow">not</span> <span class="n">be</span> <span class="n">found</span>
     1645<span class="n">The</span> <span class="n">root</span> <span class="n">CA</span> <span class="n">certificate</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">trusted</span> <span class="k">for</span> <span class="n">this</span> <span class="n">purpose</span>
     1646<span class="n">No</span> <span class="n">certificates</span> <span class="n">could</span> <span class="n">be</span> <span class="n">verified</span>
     1647
     1648<span class="n">Queries</span> <span class="n">should</span> <span class="ow">not</span> <span class="n">be</span> <span class="n">received</span> <span class="n">by</span> <span class="n">a</span> <span class="n">client</span> <span class="n">when</span> <span class="n">a</span> <span class="n">server</span> <span class="n">uses</span> <span class="n">official</span> <span class="n">SSL</span> <span class="n">certificates</span><span class="o">.</span>
     1649</pre></div>
     1650</div>
     1651<p>Tick &#8216;Ignore SSL authorization errors&#8217; if you generally trust the server and do not want to be bothered with this. Note that SSL communication is usually done over port 443 <a class="reference internal" href="#fig-7"><span class="std std-numref">(Fig. 7)</span></a>.</p>
     1652<div class="figure" id="id22">
     1653<span id="fig-7"></span><a class="reference internal image-reference" href="_images/fig_7.png"><img alt="_images/fig_7.png" src="_images/fig_7.png" style="width: 768.0px; height: 287.0px;" /></a>
     1654<p class="caption"><span class="caption-number">Fig. 7 </span><span class="caption-text">BNC&#8217;s &#8216;Network&#8217; panel configured to ignore eventually occurring SSL error messages.</span></p>
     1655</div>
     1656</div>
     1657</div>
     1658<div class="section" id="general">
     1659<span id="index-5"></span><h3>General<a class="headerlink" href="#general" title="Permalink to this headline">¶</a></h3>
     1660<p>The following defines general settings for BNC&#8217;s logfile, file handling, reconfiguration on-the-fly, and auto-start <a class="reference internal" href="#fig-7b"><span class="std std-numref">(Fig. 8)</span></a>.</p>
     1661<div class="figure" id="id23">
     1662<span id="fig-7b"></span><a class="reference internal image-reference" href="_images/fig_7b.png"><img alt="_images/fig_7b.png" src="_images/fig_7b.png" style="width: 1018.0px; height: 745.0px;" /></a>
     1663<p class="caption"><span class="caption-number">Fig. 8 </span><span class="caption-text">General BNC options</span></p>
     1664</div>
     1665<div class="section" id="logfile-optional">
     1666<span id="index-6"></span><h4>Logfile - optional<a class="headerlink" href="#logfile-optional" title="Permalink to this headline">¶</a></h4>
     1667<p>Records of BNC&#8217;s activities are shown in the &#8216;Log&#8217; tab on the bottom of the main window. These logs can be saved into a file when a valid path is specified in the &#8216;Logfile (full path)&#8217; field. The logfile name will automatically be extended by a string &#8216;_YYMMDD&#8217; for the current date. This leads to series of daily logfiles when running BNC continuously. Message logs cover the communication status between BNC and the Ntrip Broadcaster as well as problems that may occur in the communication link, stream availability, stream delay, stream conversion etc. All times are given in UTC. The default value for &#8216;Logfile (full path)&#8217; is an empty option field, meaning that BNC logs will not be saved into a file.</p>
     1668<p>The following is an example for the content of a logfile written by BNC when operated in Single Point Positioning (SPP) mode:</p>
     1669<div class="highlight-console"><div class="highlight"><pre><span class="go">15-06-30 11:40:17 ========== Start BNC v2.12 (MAC) ==========</span>
     1670<span class="go">15-06-30 11:40:17 Panel &#39;PPP&#39; active</span>
     1671<span class="go">15-06-30 11:40:17 CUT07: Get data in RTCM 3.x format</span>
     1672<span class="go">15-06-30 11:40:17 RTCM3EPH: Get data in RTCM 3.x format</span>
     1673<span class="go">15-06-30 11:40:17 Configuration read: PPP.conf, 2 stream(s)</span>
     1674
     1675<span class="go">15-06-30 11:40:21 2015-06-30_11:40:19.000 CUT07 X = -2364337.6814 Y = 4870283.8110 Z = -3360808.3085 NEU:  -0.0000  -0.0000  -0.0000 TRP:  +2.4026  -0.0001</span>
     1676<span class="go">15-06-30 11:40:22 2015-06-30_11:40:20.000 CUT07 X = -2364337.6853 Y = 4870283.8130 Z = -3360808.3082 NEU:  +1.1639  +0.6988  -2.1178 TRP:  +2.4018  +0.0003</span>
     1677<span class="go">15-06-30 11:40:23 2015-06-30_11:40:21.000 CUT07 X = -2364337.6862 Y = 4870283.8155 Z = -3360808.3107 NEU:  +0.1317  -0.4655  -4.4614 TRP:  +2.4009  +0.0009</span>
     1678<span class="go">15-06-30 11:40:24 2015-06-30_11:40:22.000 CUT07 X = -2364337.6864 Y = 4870283.8106 Z = -3360808.3099 NEU:  +0.1543  +0.2121  -1.0190 TRP:  +2.4022  +0.0009</span>
     1679<span class="go">15-06-30 11:40:25 2015-06-30_11:40:23.000 CUT07 X = -2364337.6861 Y = 4870283.8111 Z = -3360808.3105 NEU:  -0.9782  +0.0916  -2.3544 TRP:  +2.4017  +0.0013</span>
     1680<span class="go">15-06-30 11:40:26 2015-06-30_11:40:24.000 CUT07 X = -2364337.6884 Y = 4870283.8123 Z = -3360808.3103 NEU:  -0.5606  -0.0938  -1.9498 TRP:  +2.4018  +0.0016</span>
     1681<span class="go">15-06-30 11:40:27 2015-06-30_11:40:25.000 CUT07 X = -2364337.6913 Y = 4870283.8133 Z = -3360808.3122 NEU:  -0.1799  -0.1525  -4.8142 TRP:  +2.4007  +0.0025</span>
     1682<span class="go">15-06-30 11:40:28 2015-06-30_11:40:26.000 CUT07 X = -2364337.6919 Y = 4870283.8171 Z = -3360808.3184 NEU:  +0.7497  +0.7994  -2.0363 TRP:  +2.4018  +0.0032</span>
     1683<span class="go">15-06-30 11:40:29 2015-06-30_11:40:27.000 CUT07 X = -2364337.6923 Y = 4870283.8196 Z = -3360808.3230 NEU:  +0.8099  +0.5592  -2.8552 TRP:  +2.4015  +0.0039</span>
     1684<span class="go">15-06-30 11:40:30 2015-06-30_11:40:28.000 CUT07 X = -2364337.6960 Y = 4870283.8219 Z = -3360808.3222 NEU:  -0.2952  +1.9737  -4.5565 TRP:  +2.4008  +0.0047</span>
     1685<span class="go">15-06-30 11:40:31 2015-06-30_11:40:29.000 CUT07 X = -2364337.6982 Y = 4870283.8209 Z = -3360808.3209 NEU:  +0.3563  +2.1067  -5.5327 TRP:  +2.4005  +0.0057</span>
     1686<span class="go">...</span>
     1687</pre></div>
     1688</div>
     1689</div>
     1690<div class="section" id="append-files-optional">
     1691<h4>Append Files - optional<a class="headerlink" href="#append-files-optional" title="Permalink to this headline">¶</a></h4>
     1692<p>When BNC is started, new files are created by default and existing files with the same name will be overwritten. However, users might want to append existing files following a restart of BNC, a system crash or a BNC crash. Tick &#8216;Append files&#8217; to continue with existing files and keep what has been recorded so far. Note that option &#8216;Append files&#8217; affects all types of files created by BNC.</p>
     1693</div>
     1694<div class="section" id="reread-configuration-optional">
     1695<h4>Reread Configuration - optional<a class="headerlink" href="#reread-configuration-optional" title="Permalink to this headline">¶</a></h4>
     1696<p>When operating BNC online in &#8216;no window&#8217; mode (command line option <code class="docutils literal"><span class="pre">-nw</span></code>), some configuration options can nevertheless be changed on-the-fly without interrupting the running process. For that, you force the program to reread parts of its configuration in pre-defined intervals from disk. Select &#8216;1 min&#8217;, &#8216;1 hour&#8217;, or &#8216;1 day&#8217; to let BNC reread on-the-fly changeable configuration options every full minute, hour, or day. This lets in-between edited options become effective without interrupting uninvolved threads.</p>
     1697<p>Note that following configuration options saved on disk can be changed/edited on-the-fly while BNC is already processing data:</p>
     1698<ul class="simple">
     1699<li>&#8216;mountPoints&#8217; to change the selection of streams to be processed, see section &#8216;Streams Canvas&#8217;;</li>
     1700<li>&#8216;outWait&#8217; to change the &#8216;Wait for full obs epoch&#8217; option, see section &#8216;Feed Engine&#8217;;</li>
     1701<li>&#8216;outSampl&#8217; to change the &#8216;Sampling&#8217; option, see section &#8216;Feed Engine&#8217;;</li>
     1702<li>&#8216;outFile&#8217; to change the &#8216;File&#8217; name where synchronized observations are saved in plain ASCII format, see section &#8216;Feed Engine&#8217;.</li>
     1703</ul>
     1704</div>
     1705<div class="section" id="auto-start-optional">
     1706<span id="index-7"></span><h4>Auto Start - optional<a class="headerlink" href="#auto-start-optional" title="Permalink to this headline">¶</a></h4>
     1707<p>You may like to auto-start BNC at startup time in window mode with pre-assigned configuration options. This may be required e.g. immediately after booting your system. Tick &#8216;Auto start&#8217; to supersede the usage of the &#8216;Start&#8217; button. Make sure that you maintain a link to BNC for that in your Autostart directory (Windows systems) or call BNC in a script below directory <code class="docutils literal"><span class="pre">/etc/init.d</span></code> (Unix/Linux/Mac OS X systems).</p>
     1708<p>See BNC&#8217;s command line option <code class="docutils literal"><span class="pre">-nw</span></code> for an auto-start of BNC in &#8216;no window&#8217; mode.</p>
     1709</div>
     1710<div class="section" id="raw-output-file-optional">
     1711<span id="index-8"></span><h4>Raw Output File - optional<a class="headerlink" href="#raw-output-file-optional" title="Permalink to this headline">¶</a></h4>
     1712<p>BNC can save all data coming in through various streams in one daily file. The information is recorded in the specified &#8216;Raw output file&#8217; in the received order and format. This feature allows a BNC user to run the PPP option offline with observations, Broadcast Corrections, and Broadcast Ephemeris being read from a previously saved file. It supports the offline repetition of a real-time situation for debugging purposes (Record &amp; Replay functionality) and is not meant for post processing.</p>
     1713<p>Data will be saved in blocks in the received format separated by ASCII time stamps like (example):</p>
     1714<div class="highlight-console"><div class="highlight"><pre><span class="go">2010-08-03T18:05:28 RTCM3EPH RTCM_3 67</span>
     1715</pre></div>
     1716</div>
     1717<p>This example block header tells you that 67 bytes were saved in the data block following this time stamp. The information in this block is encoded in RTCM Version 3 format, comes from mountpoint RTCM3EPH and was received at 18:05:28 UTC on 2010-08-03. BNC adds its own time stamps in order to allow the reconstruction of a recorded real-time situation.</p>
     1718<p>The default value for &#8216;Raw output file&#8217; is an empty option field, meaning that BNC will not save all raw data into one single daily file.</p>
     1719</div>
     1720</div>
     1721<div class="section" id="rinex-observations">
     1722<span id="index-9"></span><h3>RINEX Observations<a class="headerlink" href="#rinex-observations" title="Permalink to this headline">¶</a></h3>
     1723<p>Observations will be converted to RINEX if they come in either RTCM Version 2 or RTCM Version 3 format. Depending on the RINEX version and incoming RTCM message types, files generated by BNC may contain data from GPS, GLONASS, Galileo, SBAS, QZSS, and/or BDS (BeiDou). In case an observation type is listed in the RINEX header but the corresponding observation is unavailable, its value is set to zero &#8216;0.000&#8217; or left blank. Note that the &#8216;RINEX TYPE&#8217; field in the RINEX Version 3 Observation file header is always set to &#8216;M(MIXED)&#8217; or &#8216;Mixed&#8217; even if the file only contains data from one system.</p>
     1724<p>It is important to understand that converting RTCM streams to RINEX files requires a priori information on observation types for specifying a complete RINEX header. Regarding the RINEX Version 2 file header, BNC simply introduces all observation types defined in the Version 2 standard and later reports &#8216;0.000&#8217; for observations which are not received. However, following this approach is not possible for RINEX Version 3 files from RTCM Version 3 MSM streams because of the huge number of observation types, which might in principle show up. The solution implemented in BNC is to start with RINEX Version 3 observation type records from skeleton files (see section &#8216;Skeleton Extension&#8217; and &#8216;Skeleton Mandatory&#8217;) and switch to a default selection of observation types when such file is not available or does not contain the required information. The following is the default selection of observation types specified for a RINEX Version 3 file:</p>
     1725<div class="highlight-console"><div class="highlight"><pre><span class="go">C    9 C2I L2I S2I C6I L6I S6I C7I L7I S7I                  SYS / # / OBS TYPES</span>
     1726<span class="go">E   12 C1X L1X SX1 C5X L5X SX5 C7X L7X SX7 C8X L8X SX8      SYS / # / OBS TYPES</span>
     1727<span class="go">G   15 C1C L1C S1C C1W L1W S1W C2X L2X S2X C2W L2W S2W C5X  SYS / # / OBS TYPES</span>
     1728<span class="go">       L5X S5X                                              SYS / # / OBS TYPES</span>
     1729<span class="go">J   24 C1C L1C S1C C1S L1S S1S C1L L1L S1L C1X L1X S1X C2S  SYS / # / OBS TYPES</span>
     1730<span class="go">       L2S S2S C2L L2L S2L C2X L2X S2X C5X L5X S5X          SYS / # / OBS TYPES</span>
     1731<span class="go">R   12 C1C L1C S1C C1P L1P S1P C2C L2C S2C C2P L2P S2P      SYS / # / OBS TYPES</span>
     1732<span class="go">S    9 C1C L1C S1C C5I L5I S5I C5Q L5Q S5Q                  SYS / # / OBS TYPES</span>
     1733</pre></div>
     1734</div>
     1735<p>Please note that RTCM Version 3 messages 1084 for GLONASS observations do not contain the GLONASS channel numbers. These observation messages can only be converted to RINEX when you add messages which include the channel numbers. This could be done by means of an additional stream carrying 1087 GLONASS observation messages or an additional stream carrying 1020 GLONASS ephemeris messages. You could also consider setting up a stream which contains both, the 1084 and the 1020 messages.</p>
     1736<p>The screenshot below shows an example setup of BNC when converting streams to RINEX. Streams are coming from various Ntrip Broadcasters as well as from a serial communication link. Specifying a decoder string &#8216;ZERO&#8217; would mean to not convert the affected stream but save its content as received. The &#8216;SSL Error&#8217; recorded in the &#8216;Log&#8217; tab is caused by the fact that observation stream downloads from IGS and MGEX Broadcasters initiate the download of RINEX skeleton files from a HTTPS (TLS/SSL) website and BNC has been configured in this example to ignore SSL errors as shown in the preceding &#8216;Network&#8217; panel screenshot <a class="reference internal" href="#fig-8"><span class="std std-numref">(Fig. 9)</span></a>.</p>
     1737<div class="figure" id="id24">
     1738<span id="fig-8"></span><a class="reference internal image-reference" href="_images/fig_8.png"><img alt="_images/fig_8.png" src="_images/fig_8.png" style="width: 900.0px; height: 729.0px;" /></a>
     1739<p class="caption"><span class="caption-number">Fig. 9 </span><span class="caption-text">BNC translating incoming observation streams to 15 min RINEX Version 3 Observation files.</span></p>
     1740</div>
     1741<div class="section" id="rinex-filenames">
     1742<span id="index-10"></span><h4>RINEX Filenames<a class="headerlink" href="#rinex-filenames" title="Permalink to this headline">¶</a></h4>
     1743<p>The default for RINEX filenames in BNC follows the convention of RINEX Version 2. However, the software provides options to alternatively follow the filename convention of RINEX Version 3. RINEX Version 2 filenames are derived by BNC from the first 4 characters of the corresponding stream&#8217;s mountpoint (4-character Station ID). For example, data from mountpoints FRANKFURT and WETTZELL will have hourly RINEX Observation files named:</p>
     1744<div class="highlight-default"><div class="highlight"><pre><span class="n">FRAN</span><span class="p">{</span><span class="n">ddd</span><span class="p">}{</span><span class="n">h</span><span class="p">}</span><span class="o">.</span><span class="p">{</span><span class="n">yy</span><span class="p">}</span><span class="n">O</span>
     1745<span class="n">WETT</span><span class="p">{</span><span class="n">ddd</span><span class="p">}{</span><span class="n">h</span><span class="p">}</span><span class="o">.</span><span class="p">{</span><span class="n">yy</span><span class="p">}</span><span class="n">O</span>
     1746</pre></div>
     1747</div>
     1748<p>where &#8216;ddd&#8217; is the day of year, &#8216;h&#8217; is a letter which corresponds to an hour long UTC time block and &#8216;yy&#8217; is the year.</p>
     1749<p>If there is more than one stream with identical 4-character Station ID (same first 4 characters for their mountpoints), the mountpoint strings are split into two sub-strings and both become part of the RINEX filename. For example, when simultaneously retrieving data from mountpoints FRANKFURT and FRANCE, their hourly RINEX Version 2 Observation files are named as:</p>
     1750<div class="highlight-default"><div class="highlight"><pre><span class="n">FRAN</span><span class="p">{</span><span class="n">ddd</span><span class="p">}{</span><span class="n">h</span><span class="p">}</span><span class="n">_KFURT</span><span class="o">.</span><span class="p">{</span><span class="n">yy</span><span class="p">}</span><span class="n">O</span>
     1751<span class="n">FRAN</span><span class="p">{</span><span class="n">ddd</span><span class="p">}{</span><span class="n">h</span><span class="p">}</span><span class="n">_CE</span><span class="o">.</span><span class="p">{</span><span class="n">yy</span><span class="p">}</span><span class="n">O</span>
     1752</pre></div>
     1753</div>
     1754<p>If several streams show up with exactly the same mountpoint name (example: BRUS0 from www.euref-ip.net and BRUS0 from www.igs-ip.net), BNC adds an integer number to the filename, leading e.g. to hourly RINEX Version 2 Observation files like:</p>
     1755<div class="highlight-default"><div class="highlight"><pre><span class="n">BRUS</span><span class="p">{</span><span class="n">ddd</span><span class="p">}{</span><span class="n">h</span><span class="p">}</span><span class="n">_0</span><span class="o">.</span><span class="p">{</span><span class="n">yy</span><span class="p">}</span><span class="n">O</span>
     1756<span class="n">BRUS</span><span class="p">{</span><span class="n">ddd</span><span class="p">}{</span><span class="n">h</span><span class="p">}</span><span class="n">_1</span><span class="o">.</span><span class="p">{</span><span class="n">yy</span><span class="p">}</span><span class="n">O</span>
     1757</pre></div>
     1758</div>
     1759<p>Note that RINEX Version 2 filenames for all intervals less than 1 hour follow the filename convention for 15 minutes RINEX Version 2 Observation files e.g.:</p>
     1760<div class="highlight-default"><div class="highlight"><pre><span class="n">FRAN</span><span class="p">{</span><span class="n">ddd</span><span class="p">}{</span><span class="n">h</span><span class="p">}{</span><span class="n">mm</span><span class="p">}</span><span class="o">.</span><span class="p">{</span><span class="n">yy</span><span class="p">}</span><span class="n">O</span>
     1761</pre></div>
     1762</div>
     1763<p>where &#8216;mm&#8217; is the starting minute within the hour.</p>
     1764<p>In case of RINEX Version 3 filenames, the conventions are summarized in <a class="reference internal" href="#tab-rinex-fn-conv"><span class="std std-numref">Table 2</span></a>.</p>
     1765<table border="1" class="docutils" id="id25">
     1766<span id="tab-rinex-fn-conv"></span><caption><span class="caption-number">Table 2 </span><span class="caption-text">Conventions of RINEX 3 file names.</span><a class="headerlink" href="#id25" title="Permalink to this table">¶</a></caption>
     1767<colgroup>
     1768<col width="32%" />
     1769<col width="23%" />
     1770<col width="45%" />
     1771</colgroup>
     1772<thead valign="bottom">
     1773<tr class="row-odd"><th class="head"><strong>Filename Parameter</strong></th>
     1774<th class="head"><strong># Characters</strong></th>
     1775<th class="head"><strong>Meaning</strong></th>
     1776</tr>
     1777</thead>
     1778<tbody valign="top">
     1779<tr class="row-even"><td>Name</td>
     1780<td>9</td>
     1781<td>Site, station and country code</td>
     1782</tr>
     1783<tr class="row-odd"><td>S</td>
     1784<td>1</td>
     1785<td>Data source</td>
     1786</tr>
     1787<tr class="row-even"><td>Start Time</td>
     1788<td>11</td>
     1789<td>YYYYDDDHHMM</td>
     1790</tr>
     1791<tr class="row-odd"><td>Period</td>
     1792<td>3</td>
     1793<td>File period</td>
     1794</tr>
     1795<tr class="row-even"><td>Obs. Freq.</td>
     1796<td>3</td>
     1797<td>Observation frequency</td>
     1798</tr>
     1799<tr class="row-odd"><td>Content</td>
     1800<td>2</td>
     1801<td>Content type</td>
     1802</tr>
     1803<tr class="row-even"><td>Format</td>
     1804<td>3</td>
     1805<td>File format</td>
     1806</tr>
     1807<tr class="row-odd"><td>Compression</td>
     1808<td>2-3</td>
     1809<td>Compression method (optional)</td>
     1810</tr>
     1811</tbody>
     1812</table>
     1813<p>Example for Mixed RINEX Version 3 GNSS observation filename, file containing 1 hour of data, one observation every second, &#8216;MO&#8217; standing for &#8216;Mixed Observations&#8217;:</p>
     1814<div class="highlight-default"><div class="highlight"><pre><span class="n">ALGO00CAN_R_20121601000_01H_01S_MO</span><span class="o">.</span><span class="n">rnx</span>
     1815</pre></div>
     1816</div>
     1817<p>Note that filename details are produced from the stream&#8217;s mountpoint as well as corresponding BNC settings and meta data from the Ntrip Broadcaster source-table.</p>
     1818</div>
     1819<div class="section" id="directory-optional">
     1820<span id="index-11"></span><h4>Directory - optional<a class="headerlink" href="#directory-optional" title="Permalink to this headline">¶</a></h4>
     1821<p>Here you can specify the path to where the RINEX Observation files will be stored. If the specified directory does not exist, BNC will not create RINEX Observation files. Default value for &#8216;Directory&#8217; is an empty option field, meaning that no RINEX Observation files will be written.</p>
     1822</div>
     1823<div class="section" id="file-interval-mandatory-if-directory-is-set">
     1824<span id="index-12"></span><h4>File Interval - mandatory if &#8216;Directory&#8217; is set<a class="headerlink" href="#file-interval-mandatory-if-directory-is-set" title="Permalink to this headline">¶</a></h4>
     1825<p>Select the length of the RINEX Observation file to be generated. The default value is 15 minutes.</p>
     1826</div>
     1827<div class="section" id="sampling-mandatory-if-directory-is-set">
     1828<span id="index-13"></span><h4>Sampling - mandatory if &#8216;Directory&#8217; is set<a class="headerlink" href="#sampling-mandatory-if-directory-is-set" title="Permalink to this headline">¶</a></h4>
     1829<p>Select the RINEX Observation sampling interval in seconds. A value of zero &#8216;0&#8217; tells BNC to store all received epochs into RINEX. This is the default value.</p>
     1830</div>
     1831<div class="section" id="skeleton-extension-optional">
     1832<span id="index-14"></span><h4>Skeleton Extension - optional<a class="headerlink" href="#skeleton-extension-optional" title="Permalink to this headline">¶</a></h4>
     1833<p>Whenever BNC starts to generate RINEX Observation files (and then once every day at midnight), it first tries to retrieve information needed for RINEX headers from so-called fully machine-readable public RINEX header skeleton files which are derived from sitelogs. An HTTP or HTTPS link to a directory containing these skeleton files may be available through data field number 7 of the affected NET record in the source-table. See <a class="reference external" href="http://www.epncb.oma.be:80/stations/log/skl/brus.skl">http://www.epncb.oma.be:80/stations/log/skl/brus.skl</a> for an example of a public RINEX header skeleton file for EPN station Brussels. Note that the download of RINEX skeleton files from HTTPS websites requires the exchange of client and/or server certificates. Clarify &#8216;SSL&#8217; options offered through panel &#8216;Network&#8217; for details.</p>
     1834<p>Sometimes public RINEX header skeleton files are not available, their content is not up to date, or you need to put additional/optional records in the RINEX header. For that, BNC allows using personal skeleton files that contain the header records you would like to include. You can derive a personal RINEX header skeleton file from the information given in an up to date sitelog. A file in the RINEX Observations &#8216;Directory&#8217; with a &#8216;Skeleton extension&#8217; suffix is interpreted by BNC as a personal RINEX header skeleton file for the corresponding stream.</p>
     1835<p>When producing RINEX Observation files from mountpoints (examples) &#8216;BRUS0&#8217;, &#8216;FRANKFURT&#8217;, and &#8216;WETTZELL&#8217;, the following skeleton filenames would be accepted:</p>
     1836<div class="highlight-console"><div class="highlight"><pre><span class="go">brus.skl</span>
     1837<span class="go">fran.skl</span>
     1838<span class="go">wett.skl</span>
     1839</pre></div>
     1840</div>
     1841<p>if &#8216;Skeleton extension&#8217; is set to &#8216;skl&#8217;.</p>
     1842<p>Note the following regulations regarding personal RINEX header skeleton files:</p>
     1843<ul class="simple">
     1844<li>If such a file exists in the &#8216;RINEX directory&#8217;, the corresponding public RINEX header skeleton file is ignored. The RINEX header is generated solely from the content of the personal skeleton.</li>
     1845<li>Personal skeletons should contain a complete first header record of type:</li>
     1846</ul>
     1847<div class="highlight-console"><div class="highlight"><pre><span class="go">RINEX VERSION / TYPE</span>
     1848</pre></div>
     1849</div>
     1850<p>They should then contain an empty header record of type:</p>
     1851<div class="highlight-console"><div class="highlight"><pre><span class="go">PGM / RUN BY / DATE</span>
     1852</pre></div>
     1853</div>
     1854<p>BNC will complete this line and include it in the RINEX file header.</p>
     1855<ul class="simple">
     1856<li>They should further contain complete header records of type:</li>
     1857</ul>
     1858<div class="highlight-console"><div class="highlight"><pre><span class="go">MARKER NAME</span>
     1859<span class="go">OBSERVER / AGENCY</span>
     1860<span class="go">REC # / TYPE / VERS</span>
     1861<span class="go">ANT # / TYPE</span>
     1862<span class="go">APPROX POSITION XYZ</span>
     1863<span class="go">ANTENNA: DELTA H/E/N</span>
     1864<span class="go">WAVELENGTH FACT L1/2 (RINEX Version 2)</span>
     1865<span class="go">SYS / # / OBS TYPES (for RINEX Version 3 files, will be ignored in Version 2 files)</span>
     1866</pre></div>
     1867</div>
    8091868<ul>
    810 <li>Pushing the 'Reread & Save Configuration' button lets BNC immediately reread its configuration from GUI input fields to make them active configuration options. Then BNC saves them on disk.</li>
    811 <li>Specifying the 'Reread configuration' option lets BNC reread its configuration from disk at pre-defined intervals.</li>
    812 </ul>
    813 <li>A specific BNC configuration can be started in 'no window' mode from scratch without a configuration file if options for the active configuration level (2) are provided via command line.</li>
    814 </ul>
    815 </p>
    816 
    817 <p><h4>1.6.1 <a name="introExamples">Examples</h4></p>
    818 
    819 <p>
    820 BNC comes with a number of configuration examples which can be used on all operating systems. Copy the complete directory 'Example_Configs' which comes with the software to your disc. It includes sub-directories 'Input' and 'Output'. There are several ways to start BNC using one of the example configurations:
    821 </p>
    822 <ul>
    823 <li>
    824 On graphical systems (except for Mac systems), you may use the computer mouse to 'drag' a configuration file icon and 'drop' it on top of BNC's program icon.
     1869<li><p class="first">They may contain any other optional complete header record as defined in the RINEX documentation.</p>
    8251870</li>
    826 <li>
    827 You could also start BNC using a command line for naming a specific configuration file (suggested e.g. for Mac systems):<br>
    828 /Applications/bnc.app/Contents/MacOS/bnc --conf &lt;configFileName&gt;
     1871<li><p class="first">They should also contain an empty header record of type:</p>
     1872<div class="highlight-none"><div class="highlight"><pre>#/ TYPES OF OBSERV (only RINEX Version 2, will be ignored when in Version 3 files)
     1873</pre></div>
     1874</div>
    8291875</li>
    830 <li>
    831 On non-graphical systems or when running BNC in batch mode in the background you may start the program using a command line with a configuration file option in '<u>n</u>o <u>w</u>indow' mode (example for Windows systems):<br>
    832 bnc.exe --conf &lt;configFileName&gt; --nw
     1876<li><p class="first">BNC will include these lines in the final RINEX file header together with an additional</p>
     1877<div class="highlight-console"><div class="highlight"><pre><span class="go">COMMENT</span>
     1878</pre></div>
     1879</div>
     1880<p>line describing the source of the stream.</p>
    8331881</li>
    834 </ul>
    835 <p>
    836 Although it's not a must, we suggest that you always create BNC configuration files with filename extension '.bnc'.
    837 </p>
    838 
    839 <p>
    840 We furthermore suggest for convenience reasons that you configure your system to automatically start BNC when you double-click a file with the filename extension '.bnc'. The following describes what to do on MS Windows systems to associate the BNC program to such configuration files:
    841 </p>
    842 
    843 <ol type=b>
    844 <li>Right-click a file that has the extension '.bnc' and then click 'Open'. If the 'Open' command is not available, click 'Open With' or double-click the file.</li>
    845 <li>Windows displays a dialog box that says that the system cannot open this file. The dialog box offers several options for selecting a program.</li>
    846 <li>Click 'Select the program from a list', and then click 'OK'.</li>
    847 <li>The 'Open With' dialog box is displayed. Click 'Browse', locate and then click the BNC program, and then click 'Open'.</li>
    848 <li>Click to select the 'Always use the selected program to open this kind of file' check box.</li>
    849 <li>Click 'OK'.</li>
     1882<li><p class="first">They should finally contain an empty last header record of type:</p>
     1883<div class="highlight-console"><div class="highlight"><pre><span class="go">END OF HEADER</span>
     1884</pre></div>
     1885</div>
     1886</li>
     1887<li><p class="first">They must not contain a header record of type:</p>
     1888<div class="highlight-console"><div class="highlight"><pre><span class="go">TIME OF FIRST OBS</span>
     1889</pre></div>
     1890</div>
     1891</li>
     1892</ul>
     1893<p>If neither a public nor a personal RINEX header skeleton file is available for BNC, a default header will be used. The following is a skeleton example for a RINEX file:</p>
     1894<div class="highlight-console"><div class="highlight"><pre><span class="go">                    OBSERVATION DATA    M (MIXED)           RINEX VERSION / TYPE</span>
     1895<span class="go">                                                            PGM / RUN BY / DATE</span>
     1896<span class="go">CUT0                                                        MARKER NAME</span>
     1897<span class="go">59945M001                                                   MARKER NUMBER</span>
     1898<span class="go">5023K67889          TRIMBLE NETR9       5.01                REC # / TYPE / VERS</span>
     1899<span class="go">4928353386          TRM59800.00     SCIS                    ANT # / TYPE</span>
     1900<span class="go"> -2364337.2699  4870285.5624 -3360809.8398                  APPROX POSITION XYZ</span>
     1901<span class="go">        0.0000        0.0000        0.0000                  ANTENNA: DELTA H/E/N</span>
     1902<span class="go">gnss@curtin.edu.au  CUT                                     OBSERVER / AGENCY</span>
     1903<span class="go">C   10 C1I L1I D1I S1I C6I L6I S6I C7I L7I S7I              SYS / # / OBS TYPES</span>
     1904<span class="go">E   13 C1X L1X D1X S1X C5X L5X S5X C7X L7X S7X C8X L8X S8X  SYS / # / OBS TYPES</span>
     1905<span class="go">G   13 C1C L1C D1C S1C C2W L2W S2W C2X L2X S2X C5X L5X S5X  SYS / # / OBS TYPES</span>
     1906<span class="go">J   19 C1C L1C D1C S1C C1X L1X S1X C1Z L1Z S1Z C2X L2X S2X  SYS / # / OBS TYPES</span>
     1907<span class="go">       C5X L5X S5X C6L L6L S6L                              SYS / # / OBS TYPES</span>
     1908<span class="go">R   13 C1C L1C D1C S1C C1P L1P S1P C2C L2C S2C C2P L2P S2P  SYS / # / OBS TYPES</span>
     1909<span class="go">S    7 C1C L1C D1C S1C C5I L5I S5I                          SYS / # / OBS TYPES</span>
     1910<span class="go">PORTIONS OF THIS HEADER GENERATED BY THE IGS CB FROM        COMMENT</span>
     1911<span class="go">SITELOG cut0_20150507.log                                   COMMENT</span>
     1912<span class="go">                                                            END OF HEADER</span>
     1913</pre></div>
     1914</div>
     1915</div>
     1916<div class="section" id="skeleton-mandatory-optional">
     1917<span id="index-15"></span><h4>Skeleton Mandatory - optional<a class="headerlink" href="#skeleton-mandatory-optional" title="Permalink to this headline">¶</a></h4>
     1918<p>Tick check box &#8216;Skeleton mandatory&#8217; in case you want that RINEX files are only produced when skeleton files are available for BNC. If no skeleton file is available for a particular source, then no RINEX observation file will be produced from the affected stream.</p>
     1919<p>Note that a skeleton file contains RINEX header information such as receiver and antenna types. In case of stream conversion to RINEX Version 3, a skeleton file should also contain information on potentially available observation types. A missing skeleton file will force BNC to only save a default set of RINEX 3 observation types.</p>
     1920</div>
     1921<div class="section" id="script-optional">
     1922<h4>Script - optional<a class="headerlink" href="#script-optional" title="Permalink to this headline">¶</a></h4>
     1923<p>Whenever a RINEX Observation file is saved, you might want to compress, copy or upload it immediately via FTP. BNC allows you to execute a script/batch file to carry out these operations. To do that, specify the full path to such script/batch file. BNC will pass the RINEX Observation file path to the script as a command line parameter (%1 on Windows systems, $1 on Unix/Linux/Mac OS X systems).</p>
     1924<p>The triggering event for calling the script or batch file is the end of a RINEX Observation file &#8216;Interval&#8217;. If that is overridden by a stream outage, the triggering event is the stream reconnection.</p>
     1925<p>As an alternative to initiating file uploads through BNC, you may like to call an upload script or batch file through your crontable or Task Scheduler (independent from BNC) once every one or two minutes after the end of each RINEX file &#8216;Interval&#8217;.</p>
     1926</div>
     1927<div class="section" id="version-2-optional">
     1928<h4>Version 2 - optional<a class="headerlink" href="#version-2-optional" title="Permalink to this headline">¶</a></h4>
     1929<p>GNSS observation data are generally hold available within BNC according to attributes as defined in RINEX Version 3. These attributes describe the tracking mode or channel when generating the observation signals. Capital letters specifying signal generation attributes are A, B, C, D, I, L, M, N, P, Q, S, W, X, Y, and Z, see RINEX Version 3 documentation. Although RINEX Version 3 with its signal generation attributes is the internal default processing format for BNC, there are two applications where the program is explicitly required to produce data files in RINEX Version 2 format:</p>
     1930<ol class="arabic simple">
     1931<li>When saving the content of incoming observation streams in RINEX Version 2 files as described in this section.</li>
     1932<li>When editing or concatenating RINEX 3 files to save them in Version 2 format, see section on &#8216;RINEX Editing &amp; QC&#8217;.</li>
    8501933</ol>
    851 
    852 <p>
    853 Some of the presented example configurations contain a user ID 'Example' with a password 'Configs' for accessing a few GNSS streams from public Ntrip Broadcasters. This free generic account is arranged for convenience reasons only. Please be so kind as to replace the generic account details as well as the place holder's 'User' and 'Pass' by the personal user ID and password you receive following an online registration through <u>http://register.rtcm-ntrip.org</u>.
    854 </p>
    855 
    856 <p>
    857 Note that the account for an Ntrip Broadcaster is usually limited to pulling a specified maximum number of streams at the same time. As running some of the example configurations requires pulling several streams, it is suggested to make sure that you do not exceed your account's limits.
    858 </p>
    859 
    860 <p>
    861 Make also sure that sub-directories 'Input' and 'Output' which are part of the example configurations exist on your system or adjust the affected example configuration options according to your needs.
    862 </p>
    863 
    864 <p>
    865 Some BNC options require Antenna Phase Center variations as made available from IGS through so-called ANTEX files at <u>ftp://igs.org/pub/station/general</u>. An example ANTEX file 'igs08.atx' is part of the BNC package for convenience.
    866 </p>
    867 
    868 <p>
    869 The example configurations assume that no proxy protects your BNC host. Should a proxy be operated in front of BNC then you need to introduce its name or IP and port number in the 'Network' panel.
    870 </p>
    871 
    872 <p>
    873 <b>(A) Working with Configuration Files</b><br><br>
    874 You should be able to run all configuration file examples without changing contained options. However, configuration 'Upload.bnc' is an exception because it requires an input stream from a connected network engine.
    875 </p>
    876 <ol type=b>
    877 
    878 <li>Configuration File 'RinexObs.bnc'<br>
    879 Purpose: Convert RTCM streams to
    880 RINEX Observation files. The configuration pulls streams from Ntrip
    881 Broadcasters using Ntrip Version 1 to generate 15min 1Hz RINEX Version 3
    882 Observation files. See <u>http://igs.bkg.bund.de/ntrip/observations</u> for observation
    883 stream resources.
    884 </li><br>
    885 
    886 <li>Configuration File 'RinexEph.bnc'<br>
    887 Purpose: Convert a RTCM stream
    888 with navigation messages to RINEX Navigation files. The configuration
    889 pulls a RTCM Version 3 stream with Broadcast Ephemeris coming from the
    890 real-time EUREF and IGS networks and saves hourly RINEX Version 3 Navigation
    891 files. See <u>http://igs.bkg.bund.de/ntrip/ephemeris</u> for further real-time
    892 Broadcast Ephemeris resources.
    893 </li><br>
    894 
    895 <li>Configuration File 'BrdcCorr.bnc'<br>
    896 Purpose: Save Broadcast Corrections from RTCM
    897 SSR messages in hourly plain ASCII files. See
    898 <u>http://igs.bkg.bund.de/ntrip/orbits</u> for various real-time IGS or EUREF
    899 orbit/clock correction products.
    900 </li><br>
    901 
    902 <li>Configuration File 'RinexConcat.bnc'<br>
    903 Purpose: Concatenate several RINEX Version 3 files to
    904 produce one compiled file and edit the marker name in the file header. The
    905 sampling interval is set to 30 seconds. See section 'RINEX Editing & QC' in the
    906 documentation for examples on how to call BNC from command line in 'no window'
    907 mode for RINEX file editing, concatenation and quality check.
    908 </li><br>
    909 
    910 <li>Configuration File 'RinexQC.bnc'<br>
    911 Purpose: Check the quality of a RINEX Version 3
    912 file by means of a multipath analysis. Results are saved on disk in terms of a
    913 plot in PNG format. See section 'RINEX Editing & QC' in the documentation for
    914 examples on how to call BNC from command line in 'no window' mode for RINEX
    915 file editing, concatenation and quality check.
    916 </li><br>
    917 
    918 <li>Configuration File 'RTK.bnc'<br>
    919 Purpose: Feed a serially connected receiver with
    920 observations from a nearby reference station for conventional RTK. The stream is
    921 scanned for RTCM messages. Message type numbers and latencies of incoming
    922 observations are reported in BNC's logfile.
    923 </li><br>
    924 
    925 <li>Configuration File 'FeedEngine.bnc'<br>
    926 Purpose: Feed a real-time GNSS engine with
    927 observations from remote reference stations. The configuration pulls a single
    928 stream from an Ntrip Broadcaster. You could also pull
    929 several streams from different casters. Incoming observations are decoded,
    930 synchronized, output through a local IP port and also saved into a file. Failure
    931 and recovery thresholds are specified to inform about outages.
    932 </li><br>
    933 
    934 <li>Configuration File 'PPP.bnc'<br>
    935 Purpose: Precise Point Positioning from
    936 observations of a rover receiver. The configuration reads RTCM Version 3
    937 observations, a Broadcast Ephemeris stream and a stream with Broadcast
    938 Corrections. Positions are saved in the logfile.
    939 </li><br>
    940 
    941 <li>Configuration File 'PPPNet.bnc'<br>
    942 Purpose: Precise
    943 Point Positioning for several rovers or receivers from an entire network of
    944 reference stations in one BNC job. The possible maximum number of PPP solutions
    945 per job depends on the processing power of the hosting computer. This example
    946 configuration reads two RTCM Version 3 observation streams, a Broadcast
    947 Ephemeris stream and a stream with Broadcast Corrections. PPP Results for the
    948 two stations are saved in PPP logfiles.
    949 </li><br>
    950 
    951 <li>Configuration File 'PPPQuickStart.bnc'<br>
    952 Purpose: Precise Point Positioning in Quick-Start
    953 mode from observations of a static receiver with precisely known position. The
    954 configuration reads RTCM Version 3 observations, Broadcast Corrections and a
    955 Broadcast Ephemeris stream. Positions are saved in NMEA format on disc.
    956 They are also output through IP port for real-time visualization with tools
    957 like RTKPLOT. Positions are saved in the logfile.
    958 </li><br>
    959 
    960 <li>Configuration File 'PPPPostProc.bnc'<br>
    961 Purpose: Precise Point Positioning in post
    962 processing mode. BNC reads RINEX Version 3 Observation and Navigation files
    963 and a Broadcast Correction file. PPP processing options are set to support
    964 the Quick-Start mode. The output is saved in a specific post processing
    965 logfile and contains coordinates derived over time following the
    966 implemented PPP filter algorithm.
    967 </li><br>
    968 
    969 <li>Configuration File 'PPPGoogleMaps.bnc'<br>
    970 Purpose: Track BNC's point positioning
    971 solutions using Google Maps or OpenStreetMap as background. BNC reads a
    972 RINEX Observation file and a RINEX Navigation file to carry out a
    973 'Standard Point Positioning' solution in post processing mode. Although
    974 this is not a real-time application, it requires the BNC host to be connected
    975 to the Internet. Specify a computation speed, then hit button 'Open Map'
    976 to open the track map, then hit 'Start' to visualize receiver positions
    977 on top of GM/OSM maps.
    978 </li><br>
    979 
    980 <li>Configuration File 'SPPQuickStartGal.bnc'<br>
    981 Purpose: Single Point Positioning in Quick-Start mode from observations of a static
    982 receiver with quite precisely known position.
    983 The configuration uses GPS, GLONASS and Galileo observations and a Broadcast
    984 Ephemeris stream.
    985 </li><br>
    986 
    987 <li>Configuration File 'SaveSp3.bnc'<br>
    988 Purpose: Produces SP3 files from a Broadcast
    989 Ephemeris stream and a Broadcast Correction stream. The Broadcast Correction
    990 stream is formally introduced in BNC's 'Combine Corrections' table. Note that
    991 producing SP3 requires an ANTEX file because SP3 file content should be
    992 referred to CoM.
    993 </li><br>
    994 
    995 <li>Configuration File 'Sp3ETRF2000PPP.bnc'<br>
    996 Purpose: Produce SP3 files from a Broadcast
    997 Ephemeris stream and a stream carrying ETRF2000 Broadcast Corrections. The
    998 Broadcast Correction stream is formally introduced in BNC's 'Combine
    999 Corrections' table. The configuration leads to a SP3 file containing orbits also referred
    1000 to ETRF2000. Pulling in addition observations from a reference station at
    1001 precisely known ETRF2000 position allows comparing an 'INTERNAL' PPP solution
    1002 with a known ETRF2000 reference coordinate.
    1003 </li><br>
    1004 
    1005 <li>Configuration File 'Upload.bnc'<br>
    1006 Purpose: Upload orbits and clocks from a
    1007 real-time GNSS engine to an Ntrip Broadcaster. For that the configuration reads
    1008 precise orbits and clocks in RTNET format. It also reads a stream carrying
    1009 Broadcast Ephemeris. BNC converts the orbits and clocks into Broadcast
    1010 Corrections and encodes them to RTCM Version 3 SSR messages to finally upload them to
    1011 an Ntrip Broadcaster. The Broadcast Correction stream is referred to satellite
    1012 Antenna Phase Center (APC) and reference system IGS08. Orbits are saved on disk
    1013 in SP3 format and clocks are saved in Clock RINEX format.
    1014 </li><br>
    1015 
    1016 <li>Configuration File 'Combi.bnc'<br>
    1017 Purpose: Pull several streams carrying Broadcast
    1018 Corrections and a Broadcast Ephemeris stream from an Ntrip Broadcaster to
    1019 produce a combined Broadcast Correction stream. BNC encodes the combination
    1020 product in RTCM Version 3 SSR messages and uploads that to an Ntrip
    1021 Broadcaster. The Broadcast Correction stream is referred to satellite Antenna Phase Center (APC) and not to satellite
    1022 Center of Mass (CoM). Its reference system is IGS08. Orbits are saved in SP3
    1023 format (referred to CoM) and clocks in Clock RINEX format.
    1024 </li><br>
    1025 
    1026 <li>Configuration File 'CombiPPP.bnc'<br>
    1027 Purpose: This configuration equals the 'Combi.bnc' configuration. However, the combined
    1028 Broadcast Corrections are in addition used for an 'INTERNAL' PPP solution
    1029 based on observations from a static reference station with known precise
    1030 coordinates. This allows a continuous quality check of the combination product
    1031 through observing coordinate displacements.
    1032 </li><br>
    1033 
    1034 <li>Configuration File 'UploadEph.bnc'<br>
    1035 Purpose: Pull a number of streams from reference
    1036 stations to get hold of contained Broadcast Ephemeris messages. They are
    1037 encoded to RTCM Version 3 format and uploaded for the purpose of providing
    1038 a Broadcast Ephemeris stream with an update rate of 5 seconds.
    1039 </li><br>
    1040 
    1041 <li>Configuration File 'CompareSp3.bnc'<br>
    1042 Purpose: Compare two SP3 files to calculate
    1043 RMS values for orbit and clock differences. GPS satellite G05 and GLONASS
    1044 satellite R18 are excluded from this comparison. Comparison results are saved
    1045 in a logfile.
    1046 </li><br>
    1047 
    1048 <li>Configuration File 'Empty.bnc'<br>
    1049 Purpose: Provide an empty example configuration file for
    1050 BNC which only contains default settings.
    1051 </li>
    1052 
    1053 </ol>
    1054 <b>(B) Working with Command Line configuration options</b><br><br>
    1055 The following configuration examples make use of BNC's 'Command Line Interface' (CLI). Configuration options are exclusively specified via command line. No configuration file is used. Examples are provided as shell scripts for a Linux system. They call BNC in 'no window' batch mode (command line option -nw). The scripts expect 'Example_Configs' to be the current working directory.
    1056 
    1057 <ol start="22">
    1058 <li>Shell Script 'RinexQC.sh'<br>
    1059 Purpose: Equals configuration file example 'RinexQC.bnc', checks the quality of
    1060 a RINEX Version 3 file by means of a multipath analysis. Virtual X-Server
    1061 'Xvfb' is operated while producing plot files in PNG format. BNC is offline. All
    1062 results are saved on disk.
    1063 </li><br>
    1064 
    1065 <li>Shell Script 'RinexConcat.sh'<br>
    1066 Purpose: Equals configuration file example 'RinexConcat.bnc', concatenates
    1067 several RINEX Version 3 files to produce one compiled file and edit the marker
    1068 name in the file header. The sampling interval is set to 30 seconds.
    1069 </li><br>
    1070 
    1071 <li>Shell Script 'RinexEph.sh'<br>
    1072 Purpose: Equals configuration file example 'RinexEph.bnc', converts a RTCM
    1073 stream with navigation messages to RINEX Navigation files. The configuration
    1074 pulls a RTCM Version 3 stream with Broadcast Ephemeris coming from the
    1075 real-time EUREF and IGS networks and saves hourly RINEX Version 3 Navigation
    1076 files. BNC runs online until it's terminated after 10 seconds.  See
    1077 <u>http://igs.bkg.bund.de/ntrip/ephemeris</u> for further real-time Broadcast
    1078 Ephemeris resources.
    1079 </li><br>
    1080 
    1081 <li>Shell Script 'ScanLate.sh'<br>
    1082 Purpose: Scan an observation stream for contained RTCM message types, print
    1083 observation latencies. The output is saved in a logfile. Latencies are
    1084 reported every 10 seconds. BNC runs online until it's terminated after 20
    1085 seconds.
    1086 </li><br>
    1087 
    1088 <li>Shell Script 'RinexObs.sh'<br>
    1089 Purpose: Equals configuration file example 'RinexObs.bnc', converts RTCM
    1090 streams to RINEX Observation files. The configuration pulls streams from two
    1091 Ntrip Broadcasters using Ntrip Version 1 to generate 15min 1Hz RINEX Version 3
    1092 Observation files. See <u>http://igs.bkg.bund.de/ntrip/observations</u> for
    1093 observation stream resources. BNC runs online until it's terminated after 30
    1094 seconds.
    1095 </li>
    1096 </ol>
    1097 
    1098 <b>(C) Command Line configuration options overwriting Configuration File options</b><br><br>
    1099 For specific applications you may like to use your own set of standard configuration options from a configuration file and update some of its content via command line. When using a configuration file together with command line configuration options in one BNC call, the command line configuration options will always overrule options contained in the configuration file.
    1100 
    1101 <ol start="27">
    1102 <li>Shell Script 'CompareSp3.sh'<br>
    1103 Purpose: Equals configuration file example 'CompareSp3.bnc', compares two SP3 files to calculate RMS values for orbit and clock differences. However, instead of excluding GPS satellite G05 and GLONASS satellite R18 from the comparison as specified in 'CompareSp3.bnc', GPS satellite G06 and all GLONASS satellites are excluded via command line option. BNC runs offline. Comparison results are saved in a logfile.
    1104 </li>
    1105 </ol>
    1106 
    1107 </p>
    1108 
    1109 <p><h4>1.7 <a name="introLimit">Limitations</h4></p>
    1110 <ul>
    1111 <li>
    1112 In Qt-based desktop environments (like KDE) on Unix/Linux platforms it may happen that you experience a crash of BNC at startup even when running the program in the background using the '-nw' option. This is a known bug most likely resulting from an incompatibility of Qt libraries in the environment and in BNC. Entering the command 'unset SESSION_MANAGER' before running BNC may help as a work-around.
    1113 </li>
    1114 
    1115 <li>
    1116 Using RTCM Version 3 to produce RINEX files, BNC will properly handle most message types. However, when handling message types 1001, 1003, 1009 and 1011 where the ambiguity field is not set, the output will be no valid RINEX. All values will be stored modulo 299792.458 (speed of light).
    1117 </li>
    1118 <li>
    1119 Using RTCM Version 2, BNC will only handle message types 18 and 19 or 20 and 21 together with position and the antenna offset information carried in types 3 and 22. Note that processing carrier phase corrections and pseudo-range corrections contained in message types 20 and 21 needs access to Broadcast Ephemeris. Hence, whenever dealing with message types 20 and 21, make sure that Broadcast Ephemeris become available for BNC through also retrieving at least one RTCM Version 3 stream carrying message types 1019 (GPS ephemeris) and 1020 (GLONASS ephemeris).
    1120 </li>
    1121 <li>
    1122 BNC's 'Get Table' function only shows the STR records of a source-table. You can use an Internet browser to download the full source-table content of any Ntrip Broadcaster by simply entering its URL in the form of <u>http://host:port</u>. Data field number 8 in the NET records may provide information about where to register for an Ntrip Broadcaster account.
    1123 </li>
    1124 <li>
    1125 EUREF as well as IGS adhere to an open data policy. Streams are made available through Ntrip Broadcasters at <u>www.euref-ip.net</u>, <u>www.igs-ip.net</u>, <u>products.igs-ip.net</u>, and <u>mgex.igs-ip.net</u> free of charge to anyone for any purpose. There is no indication up until now how many users will need to be supported simultaneously. The given situation may develop in such a way that it might become difficult to serve all registered users at the same times. In cases where limited resources on the Ntrip Broadcaster side (software restrictions, bandwidth limitation etc.) dictates, first priority in stream provision will be given to stream providers followed by re-broadcasting activities and real-time analysis centers while access to others might be temporarily denied.
    1126 </li>
    1127 <li>
    1128 Once BNC has been started, many of its configuration options cannot be changed as long as it is stopped. See chapter 'Reread Configuration' for on-the-fly configuration exceptions.
    1129 </li>
    1130 <li>
    1131 Drag and drop of configuration files is currently not supported on Mac OS X. On such system you have to start BNC via command line.
    1132 </li>
    1133 </ul>
    1134 
    1135 <p><h4>1.8 <a name="introLBack">Looking Back</h4></p>
    1136 <p>
    1137 A basic function of BNC is streaming GNSS data over the open Internet using the Ntrip transport protocol. Employing IP streaming for satellite positioning goes back to the beginning of our century. Wolfgang Rupprecht has been the first person who developed TCP/IP server software under the acronym of DGPS-IP (Rupprecht 2000) and published it under GNU General Public License (GPL). While connecting marine beacon receivers to PCs with permanent access to the Internet he transmitted DGPS corrections in an RTCM format to support Differential GPS positioning over North America. With approximately 200 bits/sec the bandwidth requirement for disseminating beacon data was comparatively small. Each stream was transmitted over a unique combination of IP address and port. Websites informed about existing streams and corresponding receiver positions.
    1138 </p>
    1139 <p>
    1140 To cope with an increasing number of transmitting GNSS reference stations, the Federal Agency for Cartography and Geodesy (BKG) together with the Informatik Centrum Dortmund (ICD) in Germany developed a streaming protocol for satellite navigation data called 'Networked Transport of RTCM via Internet Protocol' (Ntrip). The protocol was built on top of the HTTP standard and included the provision of meta data describing the stream content. Any stream could now be globally transmitted over just one IP port: HTTP port 80. Stream availability and content details became part of the transport protocol. The concept was first published in 2003 (Weber and Honkala 2004, Weber et al. 2005a) and was based on three software components, namely an NtripServer pushing data from a reference station to an NtripCaster and an NtripClient pulling data from the stream splitting caster to support a rover receiver. (Note that from a socket-programmers perspective NtripServer and NtripClient both act as clients; only the NtripCaster operates as socket-server.) Ntrip could essentially benefit from Internet Radio developments. It was the ICECAST multimedia server, which provided the bases for BKG's 'Professional Ntrip Broadcaster' with software published first in 2003 and of course again as Open Source under GPL.
    1141 </p>
    1142 <p>
    1143 For BKG as a governmental agency, making Ntrip an Open Industry Standard has been an objective from the very beginning. The 'Radio Technical Commission for Maritime Services' (RTCM) accepted 'Ntrip Version 1' in 2004 as 'RTCM Recommended Standard' (Weber et al. 2005b). Nowadays there is almost no geodetic GNSS receiver which does not come with integrated NtripClient and NtripServer functionality as part of the firmware. Hundreds of NtripCaster implementations are operated world-wide for highly accurate satellite navigation through RTK networks. Thousands of reference stations upload observations via NtripServer to central computing facilities for any kind of NtripClient application. In 2011 'Ntrip Version 2' was released (RTCM SC-104 2011) which cleared and fixed some design problems and HTTP protocol violations. It also supports TCP/IP via SSL and adds optional communication over RTSP/RTP and UDP.
    1144 </p>
    1145 <p>
    1146 With the advent of Ntrip as an open streaming standard, BKG's interest turned towards taking advantage from free real-time access to GNSS observations. International Associations such as the IAG Reference Frame Sub Commissions for Africa (AFREF), Asia & Pacific (APREF), Europe (EUREF), North America (NAREF) Latin America & Caribbean (SIRGAS), and the International GNSS Service (IGS) maintain continental or even global GNSS networks with the majority of modern receivers supporting Ntrip stream upload. Through operating BKG's NtripCaster software, these networks became extremely valuable sources of real-time GNSS information.  In 2005, this was the starting point for developing the 'BKG Ntrip Client' (BNC) as a multi-stream Open Source NtripClient that allows pulling hundreds of streams simultaneously from any number of NtripCaster installations world-wide. Decoding incoming RTCM streams and output observations epoch by epoch via IP port to feed a real-time GNSS network engine became BNC's first and foremost ability (Weber and Mervart 2009). Converting decoded streams to short high-rate RINEX files to assist near real-time applications became a welcome by-product right from the start of this development.
    1147 </p>
    1148 <p>
    1149 Adding real-time Precise Point Positioning (PPP) support to BNC began in 2010 as an important completion in view of developing an Open RTCM Standard for that. According to the State Space Representation (SSR) model, new Version 3 messages are proposed to provide e.g. satellite orbit and clock corrections and ionospheric corrections as well as biases for code and phase data. The ultimate goal for SSR standardization is to reach centimeter level accuracy within seconds as an alternative to Network RTK methods such as VRS, FKP, and MAC. Because of interoperability aspects, an Open Standard in this area is of particular interest for clients. Regarding stand-alone PPP in BNC, it is worth mentioning that the program is not and can never be in competition with a receiver manufacturer's proprietary solution. Only software or services that are part of a receiver firmware could have the potential of becoming a thread for commercial interests. However, implementing or not implementing an Open PPP approach in a firmware is and will always remain a manufacturer's decision.
    1150 </p>
    1151 <p>
    1152 Implementing some post processing capability is essential for debugging real-time software in case of problems. So certain real-time options in BNC were complemented to work offline through reading data from files. Moreover, beginning in 2012, the software was extended to support Galileo, BeiDou, and QZSS besides GPS and GLONASS. With that, the Open Source tool BNC could be used for RINEX Version 3 file editing, concatenation and quality checks, a post processing functionality demanded by the IGS Multi-GNSS Experiment and not really covered at that time by UNAVCO's famous TEQC program with its limitation on GPS.
    1153 </p>
    1154 
    1155 <p>
    1156 Over the years, the BNC Subversion (SVN) software archive received over seven thousand commits made by 11 contributors representing about one hundred thirty thousand lines of code. The well-established, mature codebase is mostly written in C++ language. Its publication under GNU GPL is thought to be well-suited for test, validation and demonstration of new approaches in precise real-time satellite navigation when IP streaming is involved. Commissioned by a German governmental agency, the overall intention has been to push the development of RTCM Recommended Standards to the benefit of IAG institutions and services such as IGS and the interested public in general.
    1157 </p>
    1158 <p>
    1159 In February 2014 the overall responsibility at BKG for the concept and realization of BNC was handed over from Georg Weber to Axel Rülke. He is in charge now for guiding the application and further evolution of the software in view of appearing new satellite navigation systems and services.
    1160 </p>
    1161 
    1162 <p><h3>2. <a name="optsettings">Settings Details</h3></p>
    1163 <p>
    1164 The general documentation approach is to create a separate chapter for each processing option in a sequence which follows the layout of BNC's Graphical User Interface (GUI). The advantage is that searching for help by means of the document's Table of Contents (TOC) is quite convenient. A rather comprehensive number of TOC entries is the accepted downside of this approach.
    1165 </p>
    1166 <p>
    1167 The following chapters describe how to set BNC program options. They explain the 'Top Menu Bar', the 'Settings Canvas' with the processing options, the content of the 'Streams Canvas' and 'Logging Canvas', and the 'Bottom Menu Bar'.
    1168 </p>
    1169 
    1170 <p><h4>2.1 <a name="topmenu">Top Menu Bar</h4></p>
    1171 <p>
    1172 The top menu bar allows selecting a font for the BNC windows, save configured options, or quit the program execution. It also provides access to the program's documentation.
    1173 </p>
    1174 
    1175 <p><h4>2.1.1 <a name="file">File</h4></p>
    1176 
    1177 <p>
    1178 The 'File' button lets you
    1179 <ul>
    1180 <li> Select an appropriate font.<br>
    1181 Use smaller font size if the BNC main window exceeds the size of your screen.
    1182 </li>
    1183 <li> Reread and save selected options in configuration file.<br>
    1184 When using 'Reread &amp; Save Configuration' while BNC is already processing data, some configuration options become immediately effective on-the-fly without interrupting uninvolved threads while all of them are saved on disk. See section 'Reread Configuration' for a list of on-the-fly changeable configuration options.
    1185 </li>
    1186 <li> Quit the BNC program.
    1187 </li>
    1188 </ul>
    1189 </p>
    1190 
    1191 <p><h4>2.1.2 <a name="help">Help</h4></p>
    1192 
    1193 <p>
    1194 The 'Help' button provides access to
    1195 <ul>
    1196 <li>
    1197 Help contents.<br>
    1198 You may keep the 'Help Contents' window open while configuring BNC.
    1199 </li>
    1200 <li>
    1201 A 'Flow Chart' showing BNC linked to a real-time GNSS network engine such as RTNET.
    1202 </li>
    1203 <li>
    1204 General information about BNC.<br>
    1205 Close the 'About BNC' window to continue working with BNC.
    1206 </li>
    1207 </ul>
    1208 </p>
    1209 
    1210 <p><h4>2.2 <a name="network">Network</h4></p>
    1211 <p>
    1212 You may need to specify a proxy when running BNC in a protected network. You may also like to use the Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL) cryptographic protocols for secure Ntrip communication over the Internet.
    1213 </p>
    1214 <p><h4>2.2.1 <a name="proxy">Proxy - Usage in a protected LAN</h4></p>
    1215 <p>
    1216 If you are running BNC within a protected Local Area Network (LAN), you might need to use a proxy server to access the Internet. Enter your proxy server IP and port number in case one is operated in front of BNC. If you do not know the IP and port of your proxy server, check the proxy server settings in your Internet browser or ask your network administrator.</p>
    1217 <p>
    1218 Note that IP streaming is often not allowed in a LAN. In this case you need to ask your network administrator for an appropriate modification of the local security policy or for the installation of a TCP relay to the Ntrip Broadcaster you need to access. If this is not possible, you might need to run BNC outside your LAN on a host that has unobstructed connection to the Internet.
    1219 </p>
    1220 
    1221 <p><h4>2.2.2 <a name="ssl">SSL - Transport Layer Security</h4></p>
    1222 <p>Communication with an Ntrip Broadcaster over Secure Sockets Layer (SSL) as well as the download of RINEX skeleton files when available from HTTPS websites requires the exchange of client and/or server certificates. Specify the path to a directory where you save certificates on your system. You may like to check out <u>http://software.rtcm-ntrip.org/wiki/Certificates</u> for a list of known Ntrip Server certificates. You may also just try communication via SSL to check out whether this is supported by the involved Ntrip Broadcaster. </p>
    1223 <p>SSL communication may involve queries coming from the Ntrip Broadcaster or from a HTTPS website hosting RINEX skeletons. Such a query could show up under BNC's 'Log' tab especially when self-signed SSL certificates are used. Example:
    1224 <pre>
    1225    SSL Error
    1226    Server Certificate Issued by:
    1227    GNSS Data Center
    1228    BKG (Bundesamt f&uuml;r Geod&auml;sie und Kartographie)
    1229    Cannot be verified
    1230 
    1231    The issuer certificate of a locally looked up certificate could not be found
    1232    The root CA certificate is not trusted for this purpose
    1233    No certificates could be verified
    1234 </pre>
    1235 Queries should not be received by a client when a server uses official SSL certificates.
    1236 </p>
    1237 <p>
    1238 Tick 'Ignore SSL authorization errors' if you generally trust the server and do not want to be bothered with this. Note that SSL communication is usually done over port 443.
    1239 </p>
    1240 
    1241 <p><img src="IMG/screenshot40.png"/></p>
    1242 <p><u>Figure 7:</u> BNC's 'Network' panel configured to ignore eventually occurring SSL error messages</p>
    1243 
    1244 <p><h4>2.3 <a name="general">General</h4></p>
    1245 <p>
    1246 The following defines general settings for BNC's logfile, file handling, reconfiguration on-the-fly, and auto-start.
    1247 </p>
    1248 
    1249 <p><h4>2.3.1 <a name="genlog">Logfile - optional</h4></p>
    1250 <p>
    1251 Records of BNC's activities are shown in the 'Log' tab on the bottom of the main window. These logs can be saved into a file when a valid path is specified in the 'Logfile (full path)' field. The logfile name will automatically be extended by a string '_YYMMDD' for the current date. This leads to series of daily logfiles when running BNC continuously. Message logs cover the communication status between BNC and the Ntrip Broadcaster as well as problems that may occur in the communication link, stream availability, stream delay, stream conversion etc. All times are given in UTC. The default value for 'Logfile (full path)' is an empty option field, meaning that BNC logs will not be saved into a file.
    1252 </p>
    1253 <p>
    1254 The following is an example for the content of a logfile written by BNC when operated in Single Point Positioning (SPP) mode:
    1255 </p>
    1256 <pre>
    1257 15-06-30 11:40:17 ========== Start BNC v2.12 (MAC) ==========
    1258 15-06-30 11:40:17 Panel 'PPP' active
    1259 15-06-30 11:40:17 CUT07: Get data in RTCM 3.x format
    1260 15-06-30 11:40:17 RTCM3EPH: Get data in RTCM 3.x format
    1261 15-06-30 11:40:17 Configuration read: PPP.conf, 2 stream(s)
    1262 
    1263 15-06-30 11:40:21 2015-06-30_11:40:19.000 CUT07 X = -2364337.6814 Y = 4870283.8110 Z = -3360808.3085 NEU:  -0.0000  -0.0000  -0.0000 TRP:  +2.4026  -0.0001
    1264 15-06-30 11:40:22 2015-06-30_11:40:20.000 CUT07 X = -2364337.6853 Y = 4870283.8130 Z = -3360808.3082 NEU:  +1.1639  +0.6988  -2.1178 TRP:  +2.4018  +0.0003
    1265 15-06-30 11:40:23 2015-06-30_11:40:21.000 CUT07 X = -2364337.6862 Y = 4870283.8155 Z = -3360808.3107 NEU:  +0.1317  -0.4655  -4.4614 TRP:  +2.4009  +0.0009
    1266 15-06-30 11:40:24 2015-06-30_11:40:22.000 CUT07 X = -2364337.6864 Y = 4870283.8106 Z = -3360808.3099 NEU:  +0.1543  +0.2121  -1.0190 TRP:  +2.4022  +0.0009
    1267 15-06-30 11:40:25 2015-06-30_11:40:23.000 CUT07 X = -2364337.6861 Y = 4870283.8111 Z = -3360808.3105 NEU:  -0.9782  +0.0916  -2.3544 TRP:  +2.4017  +0.0013
    1268 15-06-30 11:40:26 2015-06-30_11:40:24.000 CUT07 X = -2364337.6884 Y = 4870283.8123 Z = -3360808.3103 NEU:  -0.5606  -0.0938  -1.9498 TRP:  +2.4018  +0.0016
    1269 15-06-30 11:40:27 2015-06-30_11:40:25.000 CUT07 X = -2364337.6913 Y = 4870283.8133 Z = -3360808.3122 NEU:  -0.1799  -0.1525  -4.8142 TRP:  +2.4007  +0.0025
    1270 15-06-30 11:40:28 2015-06-30_11:40:26.000 CUT07 X = -2364337.6919 Y = 4870283.8171 Z = -3360808.3184 NEU:  +0.7497  +0.7994  -2.0363 TRP:  +2.4018  +0.0032
    1271 15-06-30 11:40:29 2015-06-30_11:40:27.000 CUT07 X = -2364337.6923 Y = 4870283.8196 Z = -3360808.3230 NEU:  +0.8099  +0.5592  -2.8552 TRP:  +2.4015  +0.0039
    1272 15-06-30 11:40:30 2015-06-30_11:40:28.000 CUT07 X = -2364337.6960 Y = 4870283.8219 Z = -3360808.3222 NEU:  -0.2952  +1.9737  -4.5565 TRP:  +2.4008  +0.0047
    1273 15-06-30 11:40:31 2015-06-30_11:40:29.000 CUT07 X = -2364337.6982 Y = 4870283.8209 Z = -3360808.3209 NEU:  +0.3563  +2.1067  -5.5327 TRP:  +2.4005  +0.0057
    1274 ...
    1275 </pre>
    1276 
    1277 <p><h4>2.3.2 <a name="genapp">Append Files - optional</h4></p>
    1278 <p>
    1279 When BNC is started, new files are created by default and existing files with the same name will be overwritten. However, users might want to append existing files following a restart of BNC, a system crash or a BNC crash. Tick 'Append files' to continue with existing files and keep what has been recorded so far. Note that option 'Append files' affects all types of files created by BNC.
    1280 </p>
    1281 
    1282 <p><h4>2.3.3 <a name="genconf">Reread Configuration - optional</h4></p>
    1283 <p>
    1284 When operating BNC online in 'no window' mode (command line option -nw), some configuration options can nevertheless be changed on-the-fly without interrupting the running process. For that, you force the program to reread parts of its configuration in pre-defined intervals from disk. Select '1 min', '1 hour', or '1 day' to let BNC reread on-the-fly changeable configuration options every full minute, hour, or day. This lets in-between edited options become effective without interrupting uninvolved threads.
    1285 </p>
    1286 
    1287 <p>
    1288 Note that following configuration options saved on disk can be changed/edited on-the-fly while BNC is already processing data:
    1289 </p>
    1290 <p>
    1291 <ul>
    1292 <li>'mountPoints' to change the selection of streams to be processed, see section 'Streams';</li>
    1293 <li>'outWait' to change the 'Wait for full obs epoch' option, see section 'Feed Engine';</li>
    1294 <li>'outSampl' to change the 'Sampling' option, see section 'Feed Engine';</li>
    1295 <li>'outFile' to change the 'File' name where synchronized observations are saved in plain ASCII format.</li>
    1296 </ul>
    1297 </p>
    1298 <p>
    1299 </p>
    1300 
    1301 <p><h4>2.3.4 <a name="genstart">Auto Start - optional</h4></p>
    1302 <p>
    1303 You may like to auto-start BNC at startup time in window mode with pre-assigned configuration options. This may be required e.g. immediately after booting your system. Tick 'Auto start' to supersede the usage of the 'Start' button. Make sure that you maintain a link to BNC for that in your Autostart directory (Windows systems) or call BNC in a script below directory /etc/init.d (Unix/Linux/Mac OS X systems).
    1304 </p>
    1305 <p>
    1306 See BNC's command line option '-nw' for an auto-start of BNC in 'no window' mode.
    1307 </p>
    1308 
    1309 <p><h4>2.3.5 <a name="rawout">Raw Output File - optional</h4></p>
    1310 <p>
    1311 BNC can save all data coming in through various streams in one daily file. The information is recorded in the specified 'Raw output file' in the received order and format. This feature allows a BNC user to run the PPP option offline with observations, Broadcast Corrections, and Broadcast Ephemeris being read from a previously saved file. It supports the offline repetition of a real-time situation for debugging purposes (Record &amp; Replay functionality) and is not meant for post processing.
    1312 </p>
    1313 <p>
    1314 Data will be saved in blocks in the received format separated by ASCII time stamps like (example):
    1315 <pre>
    1316    2010-08-03T18:05:28 RTCM3EPH RTCM_3 67
    1317 </pre>
    1318 </p>
    1319 <p>
    1320 This example block header tells you that 67 bytes were saved in the data block following this time stamp. The information in this block is encoded in RTCM Version 3 format, comes from mountpoint RTCM3EPH and was received at 18:05:28 UTC on 2010-08-03. BNC adds its own time stamps in order to allow the reconstruction of a recorded real-time situation.
    1321 </p>
    1322 <p>
    1323 The default value for 'Raw output file' is an empty option field, meaning that BNC will not save all raw data into one single daily file.
    1324 </p>
    1325 
    1326 <p><h4>2.4 <a name="rinex">RINEX Observations</h4></p>
    1327 <p>
    1328 Observations will be converted to RINEX if they come in either RTCM Version 2 or RTCM Version 3 format. Depending on the RINEX version and incoming RTCM message types, files generated by BNC may contain data from GPS, GLONASS, Galileo, SBAS, QZSS, and/or BDS (BeiDou). In case an observation type is listed in the RINEX header but the corresponding observation is unavailable, its value is set to zero '0.000' or left blank. Note that the 'RINEX TYPE' field in the RINEX Version 3 Observation file header is always set to 'M(MIXED)' or 'Mixed' even if the file only contains data from one system.
    1329 </p>
    1330 <p>
    1331 It is important to understand that converting RTCM streams to RINEX files requires a priori information on observation types for specifying a complete RINEX header. Regarding the RINEX Version 2 file header, BNC simply introduces all observation types defined in the Version 2 standard and later reports "0.000" for observations which are not received. However, following this approach is not possible for RINEX Version 3 files from RTCM Version 3 MSM streams because of the huge number of observation types, which might in principle show up. The solution implemented in BNC is to start with RINEX Version 3 observation type records from skeleton files (see section 'Skeleton Extension' and 'Skeleton Mandatory') and switch to a default selection of observation types when such file is not available or does not contain the required information. The following is the default selection of observation types specified for a RINEX Version 3 file:
    1332 </p>
    1333 <pre>
    1334 C    9 C2I L2I S2I C6I L6I S6I C7I L7I S7I                  SYS / # / OBS TYPES
    1335 E   12 C1X L1X SX1 C5X L5X SX5 C7X L7X SX7 C8X L8X SX8      SYS / # / OBS TYPES
    1336 G   15 C1C L1C S1C C1W L1W S1W C2X L2X S2X C2W L2W S2W C5X  SYS / # / OBS TYPES
    1337        L5X S5X                                              SYS / # / OBS TYPES
    1338 J   24 C1C L1C S1C C1S L1S S1S C1L L1L S1L C1X L1X S1X C2S  SYS / # / OBS TYPES
    1339        L2S S2S C2L L2L S2L C2X L2X S2X C5X L5X S5X          SYS / # / OBS TYPES
    1340 R   12 C1C L1C S1C C1P L1P S1P C2C L2C S2C C2P L2P S2P      SYS / # / OBS TYPES
    1341 S    9 C1C L1C S1C C5I L5I S5I C5Q L5Q S5Q                  SYS / # / OBS TYPES
    1342 </pre>
    1343 
    1344 <p>
    1345 Please note that RTCM Version 3 messages 1084 for GLONASS observations do not contain the GLONASS channel numbers. These observation messages can only be converted to RINEX when you add messages which include the channel numbers. This could be done by means of an additional stream carrying 1087 GLONASS observation messages or an additional stream carrying 1020 GLONASS ephemeris messages. You could also consider setting up a stream which contains both, the 1084 and the 1020 messages.
    1346 </p>
    1347 <p>
    1348 The screenshot below shows an example setup of BNC when converting streams to RINEX. Streams are coming from various Ntrip Broadcasters as well as from a serial communication link. Specifying a decoder string 'ZERO' would mean to not convert the affected stream but save its content as received. The 'SSL Error' recorded in the 'Log' tab is caused by the fact that observation stream downloads from IGS and MGEX Broadcasters initiate the download of RINEX skeleton files from a HTTPS (TLS/SSL) website and BNC has been configured in this example to ignore SSL errors as shown in the preceding 'Network' panel screenshot.
    1349 </p>
    1350 
    1351 <p><img src="IMG/screenshot16.png"/></p>
    1352 <p><u>Figure 8:</u> BNC translating incoming observation streams to 15 min RINEX Version 3 Observation files</p>
    1353 
    1354 <p><h4>2.4.1 <a name="rnxname">RINEX Filenames</h4></p>
    1355 <p>
    1356 The default for RINEX filenames in BNC follows the convention of RINEX Version 2. However, the software provides options to alternatively follow the filename convention of RINEX Version 3. RINEX Version 2 filenames are derived by BNC from the first 4 characters of the corresponding stream's mountpoint (4-Char Station ID). For example, data from mountpoints FRANKFURT and WETTZELL will have hourly RINEX Observation files named</p>
    1357 
    1358 <pre>
    1359    FRAN{ddd}{h}.{yy}O
    1360    WETT{ddd}{h}.{yy}O
    1361 </pre>
    1362 <p>
    1363 where 'ddd' is the day of year, 'h' is a letter which corresponds to an hour long UTC time block and 'yy' is the year.
    1364 </p>
    1365 <p>
    1366 If there is more than one stream with identical 4-Char Station ID (same first 4 characters for their mountpoints), the mountpoint strings are split into two sub-strings and both become part of the RINEX filename. For example, when simultaneously retrieving data from mountpoints FRANKFURT and FRANCE, their hourly RINEX Version 2 Observation files are named as</p>
    1367 <pre>
    1368    FRAN{ddd}{h}_KFURT.{yy}O
    1369    FRAN{ddd}{h}_CE.{yy}O
    1370 </pre>
    1371 <p>
    1372 If several streams show up with exactly the same mountpoint name (example: BRUS0 from <u>www.euref-ip.net</u> and BRUS0 from <u>www.igs-ip.net</u>), BNC adds an integer number to the filename, leading e.g. to hourly RINEX Version 2 Observation files like</p>
    1373 <pre>
    1374    BRUS{ddd}{h}_0.{yy}O
    1375    BRUS{ddd}{h}_1.{yy}O
    1376 </pre>
    1377 <p>
    1378 Note that RINEX Version 2 filenames for all intervals less than 1 hour follow the filename convention for 15 minutes RINEX Version 2 Observation files e.g.</p>
    1379 <pre>
    1380    FRAN{ddd}{h}{mm}.{yy}O
    1381 </pre>
    1382 <p>
    1383 where 'mm' is the starting minute within the hour.
    1384 </p>
    1385 
    1386 <p>
    1387 In case of RINEX Version 3 filenames, the following convention holds:
    1388 
    1389 <p>
    1390 <table>
    1391 <tr><td><b>Filename Parameter&nbsp; &nbsp;</b></td><td><b>&nbsp;# Char.</b></td><td><b>&nbsp; Meaning</b></td></tr>
    1392 <tr><td>Name</td><td>&nbsp; 9</td><td>&nbsp; Site, station and country code</td></tr>
    1393 <tr><td>S</td><td>&nbsp; 1</td><td>&nbsp; Data source</td></tr>
    1394 <tr><td>Start Time</td><td>&nbsp; 11</td><td>&nbsp; YYYYDDDHHMM</td></tr>
    1395 <tr><td>Period</td><td>&nbsp; 3</td><td>&nbsp; File period</td></tr>
    1396 <tr><td>Obs. Freq.</td><td>&nbsp; 3</td><td>&nbsp; Observation frequency</td></tr>
    1397 <tr><td>Content</td><td>&nbsp; 2</td><td>&nbsp; Content type</td></tr>
    1398 <tr><td>Format</td><td>&nbsp; 3</td><td>&nbsp; File format</td></tr>
    1399 <tr><td>Compression</td><td>&nbsp; 2-3</td><td>&nbsp; Compression method (optional)</td></tr>
    1400 </table>
    1401 </p>
    1402 <p>
    1403 Example for Mixed RINEX Version 3 GNSS observation filename, file containing 1 hour of data, one observation every second, 'MO' standing for 'Mixed Observations':
    1404 <pre>
    1405    ALGO00CAN_R_20121601000_01H_01S_MO.rnx
    1406 </pre>
    1407 </p>
    1408 <p>
    1409 Note that filename details are produced from the stream's mountpoint as well as corresponding BNC settings and meta data from the Ntrip Broadcaster source-table.
    1410 </p>
    1411 
    1412 <p><h4>2.4.2 <a name="rnxdir">Directory - optional</h4></p>
    1413 <p>
    1414 Here you can specify the path to where the RINEX Observation files will be stored. If the specified directory does not exist, BNC will not create RINEX Observation files. Default value for 'Directory' is an empty option field, meaning that no RINEX Observation files will be written.
    1415 </p>
    1416 
    1417 <p><h4>2.4.3 <a name="rnxinterval">File Interval - mandatory if 'Directory' is set</h4></p>
    1418 <p>
    1419 Select the length of the RINEX Observation file to be generated. The default value is 15 minutes.
    1420 </p>
    1421 
    1422 <p><h4>2.4.4 <a name="rnxsample">Sampling - mandatory if 'Directory' is set </h4></p>
    1423 <p>
    1424 Select the RINEX Observation sampling interval in seconds. A value of zero '0' tells BNC to store all received epochs into RINEX. This is the default value.
    1425 </p>
    1426 
    1427 <p><h4>2.4.5 <a name="rnxskl">Skeleton Extension - optional</h4></p>
    1428 <p>
    1429 Whenever BNC starts to generate RINEX Observation files (and then once every day at midnight), it first tries to retrieve information needed for RINEX headers from so-called public RINEX header skeleton files which are derived from sitelogs. An HTTP or HTTPS link to a directory containing these skeleton files may be available through data field number 7 of the affected NET record in the source-table. See <u>http://www.epncb.oma.be:80/stations/log/skl/brus.skl</u> for an example of a public RINEX header skeleton file for EPN station Brussels. Note that the download of RINEX skeleton files from HTTPS websites requires the exchange of client and/or server certificates. Clarify 'SSL' options offered through panel 'Network' for details.
    1430 </p>
    1431 <p>
    1432 Sometimes public RINEX header skeleton files are not available, their content is not up to date, or you need to put additional/optional records in the RINEX header. For that, BNC allows using personal skeleton files that contain the header records you would like to include. You can derive a personal RINEX header skeleton file from the information given in an up to date sitelog. A file in the RINEX Observations 'Directory' with a 'Skeleton extension' suffix is interpreted by BNC as a personal RINEX header skeleton file for the corresponding stream.
    1433 </p>
    1434 <p>
    1435 When producing RINEX Observation files from mountpoints (examples) 'BRUS0', 'FRANKFURT', and 'WETTZELL', the following skeleton filenames would be accepted
    1436 </p>
    1437 <pre>
    1438    BRUS.skl
    1439    FRAN.skl
    1440    WETT.skl
    1441 </pre>
    1442 <p>
    1443 if 'Skeleton extension' is set to 'skl'.
    1444 </p>
    1445 <p>
    1446 Note the following regulations regarding personal RINEX header skeleton files:
    1447 <ul>
    1448 <li>If such a file exists in the 'RINEX directory', the corresponding public RINEX header skeleton file is ignored. The RINEX header is generated solely from the content of the personal skeleton.</li>
    1449 <li>Personal skeletons should contain a complete first header record of type
    1450 <br>- &nbsp; RINEX VERSION / TYPE<br></li>
    1451 <li>They should then contain an empty header record of type
    1452 <br>- &nbsp; PGM / RUN BY / DATE<br>
    1453 BNC will complete this line and include it in the RINEX file header.</li>
    1454 <li>They should further contain complete header records of type
    1455 <br>- &nbsp; MARKER NAME
    1456 <br>- &nbsp; OBSERVER / AGENCY
    1457 <br>- &nbsp; REC # / TYPE / VERS
    1458 <br>- &nbsp; ANT # / TYPE
    1459 <br>- &nbsp; APPROX POSITION XYZ
    1460 <br>- &nbsp; ANTENNA: DELTA H/E/N
    1461 <br>- &nbsp; WAVELENGTH FACT L1/2 (RINEX Version 2)
    1462 <br>- &nbsp; SYS / # / OBS TYPES (for RINEX Version 3 files, will be ignored in Version 2 files)</li>
    1463 <li>They may contain any other optional complete header record as defined in the RINEX documentation.</li>
    1464 <li>They should also contain an empty header record of type
    1465 <br>- &nbsp; # / TYPES OF OBSERV (only RINEX Version 2, will be ignored when in Version 3 files)
    1466 <br>BNC will include these lines in the final RINEX file header together with an additional
    1467 <br>- &nbsp; COMMENT
    1468 <br>line describing the source of the stream.</li>
    1469 <li>They should finally contain an empty last header record of type
    1470 <br>- &nbsp; END OF HEADER</li>
    1471 
    1472 <li>They must not contain a header record of type
    1473 <br>- &nbsp; TIME OF FIRST OBS</li>
    1474 
    1475 </ul>
    1476 <p>
    1477 If neither a public nor a personal RINEX header skeleton file is available for BNC, a default header will be used.
    1478 </p>
    1479 <p>
    1480 The following is a skeleton example for a RINEX file:
    1481 </p>
    1482 <p>
    1483 <pre>
    1484                     OBSERVATION DATA    M (MIXED)           RINEX VERSION / TYPE
    1485                                                             PGM / RUN BY / DATE
    1486 CUT0                                                        MARKER NAME         
    1487 59945M001                                                   MARKER NUMBER       
    1488 5023K67889          TRIMBLE NETR9       5.01                REC # / TYPE / VERS
    1489 4928353386          TRM59800.00     SCIS                    ANT # / TYPE       
    1490  -2364337.2699  4870285.5624 -3360809.8398                  APPROX POSITION XYZ
    1491         0.0000        0.0000        0.0000                  ANTENNA: DELTA H/E/N
    1492 gnss@curtin.edu.au  CUT                                     OBSERVER / AGENCY   
    1493 C   10 C1I L1I D1I S1I C6I L6I S6I C7I L7I S7I              SYS / # / OBS TYPES
    1494 E   13 C1X L1X D1X S1X C5X L5X S5X C7X L7X S7X C8X L8X S8X  SYS / # / OBS TYPES
    1495 G   13 C1C L1C D1C S1C C2W L2W S2W C2X L2X S2X C5X L5X S5X  SYS / # / OBS TYPES
    1496 J   19 C1C L1C D1C S1C C1X L1X S1X C1Z L1Z S1Z C2X L2X S2X  SYS / # / OBS TYPES
    1497        C5X L5X S5X C6L L6L S6L                              SYS / # / OBS TYPES
    1498 R   13 C1C L1C D1C S1C C1P L1P S1P C2C L2C S2C C2P L2P S2P  SYS / # / OBS TYPES
    1499 S    7 C1C L1C D1C S1C C5I L5I S5I                          SYS / # / OBS TYPES
    1500 PORTIONS OF THIS HEADER GENERATED BY THE IGS CB FROM        COMMENT             
    1501 SITELOG cut0_20150507.log                                   COMMENT             
    1502                                                             END OF HEADER
    1503 </pre>
    1504 <p>
    1505 
    1506 <p><h4>2.4.6 <a name="sklMandat">Skeleton Mandatory - optional</h4></p>
    1507 <p>
    1508 Tick check box 'Skeleton mandatory' in case you want that RINEX files are only produced when skeleton files are available for BNC. If no skeleton file is available for a particular source, then no RINEX observation file will be produced from the affected stream.
    1509 </p>
    1510 <p>Note that a skeleton file contains RINEX header information such as receiver and antenna types. In case of stream conversion to RINEX Version 3, a skeleton file should also contain information on potentially available observation types. A missing skeleton file will force BNC to only save a default set of RINEX 3 observation types.
    1511 </p>
    1512 
    1513 <p><h4>2.4.7 <a name="rnxscript">Script - optional</h4></p>
    1514 <p>
    1515 Whenever a RINEX Observation file is saved, you might want to compress, copy or upload it immediately via FTP. BNC allows you to execute a script/batch file to carry out these operations. To do that, specify the full path to such script/batch file. BNC will pass the RINEX Observation file path to the script as a command line parameter (%1 on Windows systems, $1 on Unix/Linux/Mac OS X systems).
    1516 </p>
    1517 <p>
    1518 The triggering event for calling the script or batch file is the end of a RINEX Observation file 'Interval'. If that is overridden by a stream outage, the triggering event is the stream reconnection.
    1519 </p>
    1520 <p>
    1521 As an alternative to initiating file uploads through BNC, you may like to call an upload script or batch file through your crontable or Task Scheduler (independent from BNC) once every one or two minutes after the end of each RINEX file 'Interval'.
    1522 </p>
    1523 
    1524 <p><h4>2.4.8 <a name="rnxvers2">Version 2 - optional</h4></p>
    1525 <p>
    1526 GNSS observation data are generally hold available within BNC according to attributes as defined in RINEX Version 3. These attributes describe the tracking mode or channel when generating the observation signals. Capital letters specifying signal generation attributes are A, B, C, D, I, L, M, N, P, Q, S, W, X, Y, and Z, see RINEX Version 3 documentation. Although RINEX Version 3 with its signal generation attributes is the internal default processing format for BNC, there are two applications where the program is explicitly required to produce data files in RINEX Version 2 format:
    1527 <ol type=1>
    1528 <li>When saving the content of incoming observation streams in RINEX Version 2 files as described in this section.</li>
    1529 <li>When editing or concatenating RINEX 3 files to save them in Version 2 format, see section on 'RINEX Editing & QC'.</li>
    1530 </ol>
    1531 As the Version 2 format ignores signal generation attributes, BNC is forced to somehow map RINEX Version 3 to RINEX Version 2 although this cannot be done in one-to-one correspondence. Hence we introduce a 'Signal priority' list of attributes (characters, forming a string) for mapping Version 3 to Version 2.
    1532 </p>
    1533 <p>
    1534 Signal priorities can be specified as equal for all systems, as system specific or as system and frequency specific. For example:</li>
    1535 <ul>
    1536 <li>'CWPX_?' (General signal priorities valid for all GNSS)</li>
    1537 <li>'C:IQX I:ABCX' (System specific signal priorities for BDS and IRNSS)</li>
    1538 <li>'G:12&PWCSLXYN G:5&IQX R:12&PC R:3&IQX' (System and frequency specific signal priorities)</li>
    1539 </ul>
    1540 </p>
    1541 <p>
    1542 The default 'Signal priority' list is defined as follows:
    1543 <ul>
    1544  <li>'G:12&PWCSLXYN G:5&IQX R:12&PC R:3&IQX E:16&BCX E:578&IQX J:1&SLXCZ J:26&SLX J:5&IQX C:IQX I:ABCX S:1&C S:5&IQX'</li>
    1545 </ul>
    1546 
    1547 As an example the 'Signal priority' of 'CWPX_?' is explained in more detail:
    1548 <ul>
    1549 <li>Signals with attribute 'C' enjoy the highest priority. If such a Version 3 observation becomes available, it is presented as RINEX Version 2 observation if that is the format you wish to see. Observations with other attributes are being ignored.</li>
    1550 <li>If no signal with 'C' attribute is available but we have an observation with 'W' attribute, BNC presents that one as RINEX Version 2 observation and ignores all observations with other attributes. The same applies mutatis mutandis to observations with P and X attributes.</li>
    1551 <li>If no signal with 'C', 'W', 'P', or 'X' attribute is available but a signal with undefined generation attribute (underscore character, '_') exists, BNC presents that one as RINEX Version 2 observation. Note that observation attributes should actually always be available in RINEX Version 3. Hence the underscore character makes only sense in a few very special cases.</li>
    1552 <li>If no signal with 'C', 'W', 'P', 'X', or '_' generation attribute exists then the question mark '?' tells BNC to present the first of any other appearing signal as RINEX Version 2 observation.</li>
    1553 </ul>
    1554 </p>
    1555 
    1556 <p>
    1557 You may like to specify your own 'Signal priority' string(s) for producing RINEX Version 2 files. If you neither convert observation streams to RINEX Version 2 nor concatenate RINEX Version 3 to Version 2 files, then the 'Version 2' option is meaningless.
    1558 </p>
    1559 
    1560 <p><h4>2.4.9 <a name="rnxvers3">Version 3 - optional</h4></p>
    1561 <p>
    1562 The default format for RINEX Observation files is RINEX Version 2.11. Select RINEX 'Version 3' if you would like to save RTCM Version 3 observation streams in RINEX Version 3.03 format.
    1563 </p>
    1564 
    1565 <p>
    1566 Note that it is possible to force an RTCM Version 2 stream to be saved in RINEX Version 3 file format. However, this is not recommended because such stream cannot be precisely mapped to RINEX Version 3 as the required information on tracking modes (observation attributes) is not part of RTCM Version 2.
    1567 </p>
    1568 
    1569 <p><h4>2.4.10 <a name="rnxvers3File">Version 3 Filenames - optional</h4></p>
    1570 <p>
    1571 Tick check box 'Version 3 filenames' to let BNC create so-called extended filenames following the RINEX Version 3 standard.
    1572 </p>
    1573 <p>Default is an empty check box, meaning to still use filenames following the RINEX Version 2 standard although the file content is saved in RINEX Version 3 format.
    1574 </p>
    1575 
    1576 <p><h4>2.5 <a name="ephemeris">RINEX Ephemeris</h4></p>
    1577 <p>
    1578 Broadcast Ephemeris can be saved in RINEX Navigation files when received e.g. via RTCM Version 3 message types 1019 (GPS) or 1020 (GLONASS) or 1044 (QZSS) or 1043 (SBAS) or 1045 and 1046 (Galileo) or 63 (BDS/BeiDou, tentative message number). The filename convention follows the details given in section 'RINEX Filenames' except that the first four characters are 'BRDC'.
    1579 </p>
    1580 <p>
    1581 For RINEX Version 2 Navigation files the last character is 'N' or 'G' for GPS or GLONASS ephemeris in two separate files.
    1582 </p>
    1583 <p>
    1584 Regarding RINEX Version 3 you will find all ephemeris data for GPS, GLONASS, Galileo, SBAS, QZSS, and BDS gathered in one Navigation file.
    1585 </p>
    1586 <p>
    1587 The following is an example for a RINEX Version 3 Navigation filename. The file contains one day's data. 'MN' stands for 'Multi Constellation Navigation' data.
    1588 <pre>
    1589    BRDC00DEU_S_20121600000_01D_MN.rnx
    1590 </pre>
    1591 </p>
    1592 
    1593 <p>
    1594 Note that streams dedicated to carry Broadcast Ephemeris messages in RTCM Version 3 format in high repetition rates are listed on <u>http://igs.bkg.bund.de/ntrip/ephemeris</u>.
    1595 </p>
    1596 
    1597 <p>
    1598 Note further that BNC will ignore incorrect or outdated Broadcast Ephemeris data when necessary, leaving a note 'WRONG EPHEMERIS' or 'OUTDATED EPHEMERIS' in the logfile.
    1599 </p>
    1600 
    1601 <p><h4>2.5.1 <a name="ephdir">Directory - optional</h4></p>
    1602 <p>
    1603 Specify a path for saving Broadcast Ephemeris data in RINEX Navigation files. If the specified directory does not exist, BNC will not create RINEX Navigation files. Default value for Ephemeris 'Directory' is an empty option field, meaning that no RINEX Navigation files will be created.
    1604 </p>
    1605 
    1606 <p><h4>2.5.2 <a name="ephint">Interval - mandatory if 'Directory' is set</h4></p>
    1607 <p>
    1608 Select the length of RINEX Navigation files. The default value is '1 day'.
    1609 </p>
    1610 
    1611 <p><h4>2.5.3 <a name="ephport">Port - optional</h4></p>
    1612 <p>
    1613 BNC can output Broadcast Ephemeris in RINEX Version 3 format on your local host (IP 127.0.0.1) through an IP 'Port'. Specify an IP port number to activate this function. The default is an empty option field, meaning that no ASCII ephemeris output via IP port is generated.
    1614 </p>
    1615 <p>
    1616 The source code for BNC comes with an example Perl script 'test_tcpip_client.pl' that allows you to read BNC's ephemeris ASCII output from the IP port.
    1617 </p>
    1618 
    1619 <p><h4>2.5.4 <a name="ephvers">Version - optional</h4></p>
    1620 <p>
    1621 Default format for RINEX Navigation files containing Broadcast Ephemeris is RINEX Version 2.11. Select 'Version 3' if you want to save the ephemeris data in RINEX Version 3.03 format.
    1622 </p>
    1623 <p>
    1624 Note that this does not concern the Broadcast Ephemeris output through IP port, which is always in RINEX Version 3.03 format.
    1625 </p>
    1626 
    1627 <p><h4>2.5.5 <a name="ephversFile">Version 3 Filenames - optional</h4></p>
    1628 <p>
    1629 Tick check box 'Version 3 filenames' to let BNC create so-called extended filenames following the RINEX Version 3 standard.
    1630 </p>
    1631 <p>Default is an empty check box, meaning to still use filenames following the RINEX Version 2 standard although the file content is saved in RINEX Version 3 format.
    1632 </p>
    1633 
    1634 <p><img src="IMG/screenshot42.png"/></p>
    1635 <p><u>Figure 9:</u> BNC converting Broadcast Ephemeris stream to RINEX Version 3 Navigation files</p>
    1636 
    1637 <p><h4>2.6 <a name="reqc">RINEX Editing & QC</h4></p>
    1638 <p>
    1639 Besides stream conversion from RTCM to RINEX, BNC allows editing RINEX files or concatenate their content. RINEX Observation and Navigation files can be handled. BNC can also carry out a RINEX file Quality Check. In summary  and besides Stream <u><b>T</b></u>ranslation, this functionality in BNC covers
    1640 <ul>
    1641 <li>File <u><b>E</b></u>diting and concatenation</li>
    1642 <li>File <u><b>Q</b></u>uality <u><b>C</b></u>heck</li>
    1643 <ul>
     1934<p>As the Version 2 format ignores signal generation attributes, BNC is forced to somehow map RINEX Version 3 to RINEX Version 2 although this cannot be done in one-to-one correspondence. Hence we introduce a &#8216;Signal priority&#8217; list of attributes (characters, forming a string) for mapping Version 3 to Version 2.</p>
     1935<p>Signal priorities can be specified as equal for all systems, as system specific or as system and frequency specific. For example:</p>
     1936<ul class="simple">
     1937<li>&#8216;<a href="#id72"><span class="problematic" id="id73">CWPX_</span></a>?&#8217; (General signal priorities valid for all GNSS)</li>
     1938<li>&#8216;C:IQX I:ABCX&#8217; (System specific signal priorities for BDS and IRNSS)</li>
     1939<li>&#8216;G:12&amp;PWCSLXYN G:5&amp;IQX R:12&amp;PC R:3&amp;IQX&#8217; (System and frequency specific signal priorities)</li>
     1940</ul>
     1941<p>The default &#8216;Signal priority&#8217; list is defined as follows: &#8216;G:12&amp;PWCSLXYN G:5&amp;IQX R:12&amp;PC R:3&amp;IQX E:16&amp;BCX E:578&amp;IQX J:1&amp;SLXCZ J:26&amp;SLX J:5&amp;IQX C:IQX I:ABCX S:1&amp;C S:5&amp;IQX&#8217;</p>
     1942<p>As an example the &#8216;Signal priority&#8217; of &#8216;<a href="#id74"><span class="problematic" id="id75">CWPX_</span></a>?&#8217; is explained in more detail:</p>
     1943<ul class="simple">
     1944<li>Signals with attribute &#8216;C&#8217; enjoy the highest priority. If such a Version 3 observation becomes available, it is presented as RINEX Version 2 observation if that is the format you wish to see. Observations with other attributes are being ignored.</li>
     1945<li>If no signal with &#8216;C&#8217; attribute is available but we have an observation with &#8216;W&#8217; attribute, BNC presents that one as RINEX Version 2 observation and ignores all observations with other attributes. The same applies mutatis mutandis to observations with P and X attributes.</li>
     1946<li>If no signal with &#8216;C&#8217;, &#8216;W&#8217;, &#8216;P&#8217;, or &#8216;X&#8217; attribute is available but a signal with undefined generation attribute (underscore character, &#8216;_&#8217;) exists, BNC presents that one as RINEX Version 2 observation. Note that observation attributes should actually always be available in RINEX Version 3. Hence the underscore character makes only sense in a few very special cases.</li>
     1947<li>If no signal with &#8216;C&#8217;, &#8216;W&#8217;, &#8216;P&#8217;, &#8216;X&#8217;, or &#8216;_&#8217; generation attribute exists then the question mark &#8216;?&#8217; tells BNC to present the first of any other appearing signal as RINEX Version 2 observation.</li>
     1948</ul>
     1949<p>You may like to specify your own &#8216;Signal priority&#8217; string(s) for producing RINEX Version 2 files. If you neither convert observation streams to RINEX Version 2 nor concatenate RINEX Version 3 to Version 2 files, then the &#8216;Version 2&#8217; option is meaningless.</p>
     1950</div>
     1951<div class="section" id="version-3-optional">
     1952<h4>Version 3 - optional<a class="headerlink" href="#version-3-optional" title="Permalink to this headline">¶</a></h4>
     1953<p>The default format for RINEX Observation files is RINEX Version 2.11. Select RINEX &#8216;Version 3&#8217; if you would like to save RTCM Version 3 observation streams in RINEX Version 3.03 format. Note that it is possible to force an RTCM Version 2 stream to be saved in RINEX Version 3 file format. However, this is not recommended because such stream cannot be precisely mapped to RINEX Version 3 as the required information on tracking modes (observation attributes) is not part of RTCM Version 2.</p>
     1954</div>
     1955<div class="section" id="version-3-filenames-optional">
     1956<h4>Version 3 Filenames - optional<a class="headerlink" href="#version-3-filenames-optional" title="Permalink to this headline">¶</a></h4>
     1957<p>Tick check box &#8216;Version 3 filenames&#8217; to let BNC create so-called extended filenames following the RINEX Version 3 standard. Default is an empty check box, meaning to still use filenames following the RINEX Version 2 standard although the file content is saved in RINEX Version 3 format.</p>
     1958</div>
     1959</div>
     1960<div class="section" id="rinex-ephemeris">
     1961<span id="index-16"></span><h3>RINEX Ephemeris<a class="headerlink" href="#rinex-ephemeris" title="Permalink to this headline">¶</a></h3>
     1962<p>Broadcast Ephemeris can be saved in RINEX Navigation files when received e.g. via RTCM Version 3 message types 1019 (GPS) or 1020 (GLONASS) or 1044 (QZSS) or 1043 (SBAS) or 1045 and 1046 (Galileo) or 63 (BDS/BeiDou, tentative message number). The filename convention follows the details given in section &#8216;RINEX Filenames&#8217; except that the first four characters are &#8216;BRDC&#8217;. For RINEX Version 2 Navigation files the last character is &#8216;N&#8217; or &#8216;G&#8217; for GPS or GLONASS ephemeris in two separate files. Regarding RINEX Version 3 you will find all ephemeris data for GPS, GLONASS, Galileo, SBAS, QZSS, and BDS gathered in one Navigation file.</p>
     1963<p>The following is an example for a RINEX Version 3 Navigation filename. The file contains one day&#8217;s data. &#8216;MN&#8217; stands for &#8216;Multi Constellation Navigation&#8217; data.</p>
     1964<div class="highlight-console"><div class="highlight"><pre><span class="go">BRDC00DEU_S_20121600000_01D_MN.rnx</span>
     1965</pre></div>
     1966</div>
     1967<p>Note that streams dedicated to carry Broadcast Ephemeris messages in RTCM Version 3 format in high repetition rates are listed on <a class="reference external" href="http://igs.bkg.bund.de/ntrip/ephemeris">http://igs.bkg.bund.de/ntrip/ephemeris</a>. Note further that BNC will ignore incorrect or outdated Broadcast Ephemeris data when necessary, leaving a note &#8216;WRONG EPHEMERIS&#8217; or &#8216;OUTDATED EPHEMERIS&#8217; in the logfile.</p>
     1968<div class="section" id="id1">
     1969<h4>Directory - optional<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h4>
     1970<p>Specify a path for saving Broadcast Ephemeris data in RINEX Navigation files. If the specified directory does not exist, BNC will not create RINEX Navigation files. Default value for Ephemeris &#8216;Directory&#8217; is an empty option field, meaning that no RINEX Navigation files will be created.</p>
     1971</div>
     1972<div class="section" id="interval-mandatory-if-directory-is-set">
     1973<h4>Interval - mandatory if &#8216;Directory&#8217; is set<a class="headerlink" href="#interval-mandatory-if-directory-is-set" title="Permalink to this headline">¶</a></h4>
     1974<p>Select the length of RINEX Navigation files. The default value is &#8216;1 day&#8217;.</p>
     1975</div>
     1976<div class="section" id="port-optional">
     1977<h4>Port - optional<a class="headerlink" href="#port-optional" title="Permalink to this headline">¶</a></h4>
     1978<p>BNC can output Broadcast Ephemeris in RINEX Version 3 format on your local host (IP 127.0.0.1) through an IP &#8216;Port&#8217;. Specify an IP port number to activate this function. The default is an empty option field, meaning that no ASCII ephemeris output via IP port is generated.</p>
     1979<p>The source code for BNC comes with an example Perl script <code class="docutils literal"><span class="pre">test_tcpip_client.pl</span></code> that allows you to read BNC&#8217;s ephemeris ASCII output from the IP port.</p>
     1980</div>
     1981<div class="section" id="version-optional">
     1982<h4>Version - optional<a class="headerlink" href="#version-optional" title="Permalink to this headline">¶</a></h4>
     1983<p>Default format for RINEX Navigation files containing Broadcast Ephemeris is RINEX Version 2.11. Select &#8216;Version 3&#8217; if you want to save the ephemeris data in RINEX Version 3.03 format. Note that this does not concern the Broadcast Ephemeris output through IP port, which is always in RINEX Version 3.03 format.</p>
     1984</div>
     1985<div class="section" id="id2">
     1986<h4>Version 3 Filenames - optional<a class="headerlink" href="#id2" title="Permalink to this headline">¶</a></h4>
     1987<p>Tick check box &#8216;Version 3 filenames&#8217; to let BNC create so-called extended filenames following the RINEX Version 3 standard. Default is an empty check box, meaning to still use filenames following the RINEX Version 2 standard although the file content is saved in RINEX Version 3 format <a class="reference internal" href="#fig-9"><span class="std std-numref">(Fig. 10)</span></a>.</p>
     1988<div class="figure" id="id26">
     1989<span id="fig-9"></span><a class="reference internal image-reference" href="_images/fig_9.png"><img alt="_images/fig_9.png" src="_images/fig_9.png" style="width: 859.0px; height: 510.0px;" /></a>
     1990<p class="caption"><span class="caption-number">Fig. 10 </span><span class="caption-text">BNC converting Broadcast Ephemeris stream to RINEX Version 3 Navigation files</span></p>
     1991</div>
     1992</div>
     1993</div>
     1994<div class="section" id="rinex-editing-qc">
     1995<span id="index-17"></span><h3>RINEX Editing &amp; QC<a class="headerlink" href="#rinex-editing-qc" title="Permalink to this headline">¶</a></h3>
     1996<p>Besides stream conversion from RTCM to RINEX, BNC allows editing RINEX files or concatenate their content. RINEX Observation and Navigation files can be handled. BNC can also carry out a RINEX file Quality Check. In summary and besides Stream <strong>T</strong>ranslation, this functionality in BNC covers</p>
     1997<ul class="simple">
     1998<li>File <strong>E</strong>diting and concatenation</li>
     1999<li>File <strong>Q</strong>uality <strong>C</strong>heck<ul>
    16442000<li>Multipath analysis sky plots</li>
    16452001<li>Signal-to-noise ratio sky plots</li>
    … …  
    16482004<li>PDOP plots</li>
    16492005</ul>
    1650 </ul>
    1651 and hence follows UNAVCO's famous TEQC program (see Estey and Meertens 1999). The remarkable thing about BNC in this context is that it supports RINEX Version 3 under GNU General Public License with full GUI support and graphics output.
    1652 </p>
     2006</li>
     2007</ul>
     2008<p>and hence follows UNAVCO&#8217;s famous teqc program (see <a class="reference internal" href="bnchelp.html#estey1999a" id="id3">[7]</a>). The remarkable thing about BNC in this context is that it supports RINEX Version 3 under GNU General Public License with full GUI support and graphics output.</p>
     2009<div class="section" id="action-optional">
     2010<h4>Action - optional<a class="headerlink" href="#action-optional" title="Permalink to this headline">¶</a></h4>
     2011<p>Select an action. Options are &#8216;Edit/Concatenate&#8217; and &#8216;Analyze&#8217;.</p>
     2012<ul class="simple">
     2013<li>Select &#8216;Edit/Concatenate&#8217; if you want to edit RINEX file content according to options specified under &#8216;Set Edit Options&#8217; or if you want to concatenate several RINEX files.</li>
     2014<li>Select &#8216;Analyze&#8217; if you are interested in a quality check of your RINEX file content.</li>
     2015</ul>
     2016</div>
     2017<div class="section" id="input-files-mandatory">
     2018<h4>Input Files - mandatory<a class="headerlink" href="#input-files-mandatory" title="Permalink to this headline">¶</a></h4>
     2019<p>Specify full path to input RINEX Observation file(s), and specify full path to input RINEX Navigation file(s). When specifying several input files, BNC will concatenate their contents. In case of RINEX Observation input files with different observation type header records, BNC will output only one set of adjusted observation type records in the RINEX header which fits to the whole file content. Note that you may specify several RINEX Version 2 Navigation files for GPS and GLONASS.</p>
     2020</div>
     2021<div class="section" id="output-files-optional-if-action-is-set-to-edit-concatenate">
     2022<h4>Output Files - optional if &#8216;Action&#8217; is set to &#8216;Edit/Concatenate&#8217;<a class="headerlink" href="#output-files-optional-if-action-is-set-to-edit-concatenate" title="Permalink to this headline">¶</a></h4>
     2023<p>If &#8216;Edit/Concatenate&#8217; is selected, specifying the full path to output RINEX Observation file(s) and specifying the full path to output RINEX Navigation file(s) is optional. Default are empty option fields, meaning that no RINEX files will be saved on disk.</p>
     2024</div>
     2025<div class="section" id="id4">
     2026<h4>Logfile - optional<a class="headerlink" href="#id4" title="Permalink to this headline">¶</a></h4>
     2027<p>Specify the name of a logfile to save information on RINEX file Editing/Concatenation or Analysis. Default is an empty option field, meaning that no logfile will be saved. Note that logfiles from analyzing RINEX files may become quite large. Hence, BNC provides an option &#8216;Summary only&#8217; to limit logfile content to some essential information in case &#8216;Action&#8217; is set to &#8216;Analyze&#8217;. The following is an example for a RINEX quality check analysis logfile:</p>
     2028<div class="highlight-console"><div class="highlight"><pre><span class="go">QC Format Version  : 1.1</span>
    16532029
    1654 <p><h4>2.6.1 <a name="reqcact">Action - optional</h4></p>
    1655 <p>Select an action. Options are 'Edit/Concatenate' and 'Analyze'.
    1656 <ul>
    1657 <li>Select 'Edit/Concatenate' if you want to edit RINEX file content according to options specified under 'Set Edit Options' or if you want to concatenate several RINEX files.</li>
    1658 <li>Select 'Analyze' if you are interested in a quality check of your RINEX file content.</li>
    1659 </ul>
    1660 </p>
     2030<span class="go">Navigation File(s) : BRDC2520.15P</span>
     2031<span class="go">Ephemeris          : 2985 OK   0 BAD</span>
    16612032
    1662 <p><h4>2.6.2 <a name="reqcinp">Input Files - mandatory</h4></p>
    1663 <p>
    1664 Specify full path to input RINEX Observation file(s), and<br>
    1665 specify full path to input RINEX Navigation file(s).
    1666 </p>
    1667 <p>
    1668 When specifying several input files, BNC will concatenate their contents. In case of RINEX Observation input files with different observation type header records, BNC will output only one set of adjusted observation type records in the RINEX header which fits to the whole file content.
    1669 </p>
    1670 <p>
    1671 Note that you may specify several RINEX Version 2 Navigation files for GPS and GLONASS.
    1672 </p>
     2033<span class="go">Observation File   : CUT02520.15O</span>
     2034<span class="go">RINEX Version      : 3.03</span>
     2035<span class="go">Marker Name        : CUT0</span>
     2036<span class="go">Marker Number      : 59945M001</span>
     2037<span class="go">Receiver           : TRIMBLE NETR9</span>
     2038<span class="go">Antenna            : TRM59800.00     SCIS</span>
     2039<span class="go">Position XYZ       :  -2364337.2699   4870285.5624  -3360809.8398</span>
     2040<span class="go">Antenna dH/dE/dN   :   0.0000   0.0000   0.0000</span>
     2041<span class="go">Start Time         : 2015-09-09 13.04.50.0</span>
     2042<span class="go">End Time           : 2015-09-09 23.59.58.0</span>
     2043<span class="go">Interval           : 1</span>
     2044<span class="go">Navigation Systems : 6    C E G J R S</span>
     2045<span class="go">Observation Types C: C2I L2I D2I S2I C6I L6I S6I C7I L7I S7I</span>
     2046<span class="go">Observation Types E: C1X L1X D1X S1X C5X L5X S5X C7X L7X S7X C8X L8X S8X</span>
     2047<span class="go">Observation Types G: C1C L1C D1C S1C C2W L2W S2W C2X L2X S2X C5X L5X S5X</span>
     2048<span class="go">Observation Types J: C1C L1C D1C S1C C1X L1X S1X C1Z L1Z S1Z C2X L2X S2X C5X L5X S5X C6L L6L S6L</span>
     2049<span class="go">Observation Types R: C1C L1C D1C S1C C1P L1P S1P C2C L2C S2C C2P L2P S2P</span>
     2050<span class="go">Observation Types S: C1C L1C D1C S1C C5I L5I S5I</span>
    16732051
    1674 <p><h4>2.6.3 <a name="reqcout">Output Files - optional if 'Action' is set to 'Edit/Concatenate'</h4></p>
    1675 <p>
    1676 If 'Edit/Concatenate' is selected, specifying the full path to output RINEX Observation file(s) and specifying the full path to output RINEX Navigation file(s) is optional. Default are empty option fields, meaning that no RINEX files will be saved on disk.
    1677 </p>
     2052<span class="go">  C: Satellites: 13</span>
     2053<span class="go">  C: Signals   : 3    2I 6I 7I</span>
    16782054
    1679 <p><h4>2.6.4 <a name="reqclog">Logfile - optional</h4></p>
    1680 <p>
    1681 Specify the name of a logfile to save information on RINEX file Editing/Concatenation or Analysis. Default is an empty option field, meaning that no logfile will be saved.
    1682 </p>
     2055<span class="go">      C:   2I: Observations      : 396567 (  511017)    77.60 %</span>
     2056<span class="go">      C:   2I: Slips (file+found):        0 +       0</span>
     2057<span class="go">      C:   2I: Gaps              :     8676</span>
     2058<span class="go">      C:   2I: Mean SNR          :     41.7</span>
     2059<span class="go">      C:   2I: Mean Multipath    :     0.42</span>
    16832060
    1684 <p>
    1685 Note that logfiles from analyzing RINEX files may become quite large. Hence, BNC provides an option 'Summary only' to limit logfile content to some essential information in case 'Action' is set to 'Analyze'. The following is an example for a RINEX quality check analysis logfile:
    1686 <pre>
    1687 QC Format Version  : 1.1
     2061<span class="go">      C:   6I: Observations      : 396233 (  511017)    77.54 %</span>
     2062<span class="go">      C:   6I: Slips (file+found):        0 +       0</span>
     2063<span class="go">      C:   6I: Gaps              :     8761</span>
     2064<span class="go">      C:   6I: Mean SNR          :     44.4</span>
     2065<span class="go">      C:   6I: Mean Multipath    :     0.00</span>
    16882066
    1689 Navigation File(s) : BRDC2520.15P
    1690 Ephemeris          : 2985 OK   0 BAD
     2067<span class="go">      C:   7I: Observations      : 396233 (  511017)    77.54 %</span>
     2068<span class="go">      C:   7I: Slips (file+found):        0 +       0</span>
     2069<span class="go">      C:   7I: Gaps              :     8761</span>
     2070<span class="go">      C:   7I: Mean SNR          :     43.6</span>
     2071<span class="go">      C:   7I: Mean Multipath    :     0.30</span>
    16912072
    1692 Observation File   : CUT02520.15O
    1693 RINEX Version      : 3.03
    1694 Marker Name        : CUT0
    1695 Marker Number      : 59945M001
    1696 Receiver           : TRIMBLE NETR9
    1697 Antenna            : TRM59800.00     SCIS
    1698 Position XYZ       :  -2364337.2699   4870285.5624  -3360809.8398
    1699 Antenna dH/dE/dN   :   0.0000   0.0000   0.0000
    1700 Start Time         : 2015-09-09 13.04.50.0
    1701 End Time           : 2015-09-09 23.59.58.0
    1702 Interval           : 1
    1703 Navigation Systems : 6    C E G J R S
    1704 Observation Types C: C2I L2I D2I S2I C6I L6I S6I C7I L7I S7I
    1705 Observation Types E: C1X L1X D1X S1X C5X L5X S5X C7X L7X S7X C8X L8X S8X
    1706 Observation Types G: C1C L1C D1C S1C C2W L2W S2W C2X L2X S2X C5X L5X S5X
    1707 Observation Types J: C1C L1C D1C S1C C1X L1X S1X C1Z L1Z S1Z C2X L2X S2X C5X L5X S5X C6L L6L S6L
    1708 Observation Types R: C1C L1C D1C S1C C1P L1P S1P C2C L2C S2C C2P L2P S2P
    1709 Observation Types S: C1C L1C D1C S1C C5I L5I S5I
     2073<span class="go">  E: Satellites: 5</span>
     2074<span class="go">  E: Signals   : 4    1X 5X 7X 8X</span>
    17102075
    1711   C: Satellites: 13
    1712   C: Signals   : 3    2I 6I 7I
     2076<span class="go">      E:   1X: Observations      :  74468 (  196545)    37.89 %</span>
     2077<span class="go">      E:   1X: Slips (file+found):        0 +       2</span>
     2078<span class="go">      E:   1X: Gaps              :     2758</span>
     2079<span class="go">      E:   1X: Mean SNR          :     45.1</span>
     2080<span class="go">      E:   1X: Mean Multipath    :     0.37</span>
    17132081
    1714       C:   2I: Observations      : 396567 (  511017)    77.60 %
    1715       C:   2I: Slips (file+found):        0 +       0
    1716       C:   2I: Gaps              :     8676
    1717       C:   2I: Mean SNR          :     41.7
    1718       C:   2I: Mean Multipath    :     0.42
     2082<span class="go">      E:   5X: Observations      :  74422 (  196545)    37.87 %</span>
     2083<span class="go">      E:   5X: Slips (file+found):        0 +       2</span>
     2084<span class="go">      E:   5X: Gaps              :     2785</span>
     2085<span class="go">      E:   5X: Mean SNR          :     45.2</span>
     2086<span class="go">      E:   5X: Mean Multipath    :     0.32</span>
    17192087
    1720       C:   6I: Observations      : 396233 (  511017)    77.54 %
    1721       C:   6I: Slips (file+found):        0 +       0
    1722       C:   6I: Gaps              :     8761
    1723       C:   6I: Mean SNR          :     44.4
    1724       C:   6I: Mean Multipath    :     0.00
     2088<span class="go">      E:   7X: Observations      :  74422 (  196545)    37.87 %</span>
     2089<span class="go">      E:   7X: Slips (file+found):        0 +       0</span>
     2090<span class="go">      E:   7X: Gaps              :     2785</span>
     2091<span class="go">      E:   7X: Mean SNR          :     44.2</span>
     2092<span class="go">      E:   7X: Mean Multipath    :     0.00</span>
    17252093
    1726       C:   7I: Observations      : 396233 (  511017)    77.54 %
    1727       C:   7I: Slips (file+found):        0 +       0
    1728       C:   7I: Gaps              :     8761
    1729       C:   7I: Mean SNR          :     43.6
    1730       C:   7I: Mean Multipath    :     0.30
     2094<span class="go">      E:   8X: Observations      :  74429 (  196545)    37.87 %</span>
     2095<span class="go">      E:   8X: Slips (file+found):        0 +       0</span>
     2096<span class="go">      E:   8X: Gaps              :     2784</span>
     2097<span class="go">      E:   8X: Mean SNR          :     49.9</span>
     2098<span class="go">      E:   8X: Mean Multipath    :     0.00</span>
    17312099
    1732   E: Satellites: 5
    1733   E: Signals   : 4    1X 5X 7X 8X
     2100<span class="go">  G: Satellites: 28</span>
     2101<span class="go">  G: Signals   : 4    1C 2W 2X 5X</span>
    17342102
    1735       E:   1X: Observations      :  74468 (  196545)    37.89 %
    1736       E:   1X: Slips (file+found):        0 +       2
    1737       E:   1X: Gaps              :     2758
    1738       E:   1X: Mean SNR          :     45.1
    1739       E:   1X: Mean Multipath    :     0.37
     2103<span class="go">      G:   1C: Observations      : 439952 ( 1100652)    39.97 %</span>
     2104<span class="go">      G:   1C: Slips (file+found):        0 +      21</span>
     2105<span class="go">      G:   1C: Gaps              :    10901</span>
     2106<span class="go">      G:   1C: Mean SNR          :     44.0</span>
     2107<span class="go">      G:   1C: Mean Multipath    :     0.63</span>
    17402108
    1741       E:   5X: Observations      :  74422 (  196545)    37.87 %
    1742       E:   5X: Slips (file+found):        0 +       2
    1743       E:   5X: Gaps              :     2785
    1744       E:   5X: Mean SNR          :     45.2
    1745       E:   5X: Mean Multipath    :     0.32
     2109<span class="go">      G:   2W: Observations      : 422560 ( 1100652)    38.39 %</span>
     2110<span class="go">      G:   2W: Slips (file+found):        0 +      19</span>
     2111<span class="go">      G:   2W: Gaps              :    11133</span>
     2112<span class="go">      G:   2W: Mean SNR          :     31.1</span>
     2113<span class="go">      G:   2W: Mean Multipath    :     0.42</span>
    17462114
    1747       E:   7X: Observations      :  74422 (  196545)    37.87 %
    1748       E:   7X: Slips (file+found):        0 +       0
    1749       E:   7X: Gaps              :     2785
    1750       E:   7X: Mean SNR          :     44.2
    1751       E:   7X: Mean Multipath    :     0.00
     2115<span class="go">      G:   2X: Observations      : 205305 ( 1100652)    18.65 %</span>
     2116<span class="go">      G:   2X: Slips (file+found):        0 +      10</span>
     2117<span class="go">      G:   2X: Gaps              :     7269</span>
     2118<span class="go">      G:   2X: Mean SNR          :     43.3</span>
     2119<span class="go">      G:   2X: Mean Multipath    :     0.47</span>
    17522120
    1753       E:   8X: Observations      :  74429 (  196545)    37.87 %
    1754       E:   8X: Slips (file+found):        0 +       0
    1755       E:   8X: Gaps              :     2784
    1756       E:   8X: Mean SNR          :     49.9
    1757       E:   8X: Mean Multipath    :     0.00
     2121<span class="go">      G:   5X: Observations      : 120638 ( 1100652)    10.96 %</span>
     2122<span class="go">      G:   5X: Slips (file+found):        0 +       0</span>
     2123<span class="go">      G:   5X: Gaps              :     3330</span>
     2124<span class="go">      G:   5X: Mean SNR          :     49.9</span>
     2125<span class="go">      G:   5X: Mean Multipath    :     0.00</span>
    17582126
    1759   G: Satellites: 28
    1760   G: Signals   : 4    1C 2W 2X 5X
     2127<span class="go">  J: Satellites: 1</span>
     2128<span class="go">  J: Signals   : 6    1C 1X 1Z 2X 5X 6L</span>
    17612129
    1762       G:   1C: Observations      : 439952 ( 1100652)    39.97 %
    1763       G:   1C: Slips (file+found):        0 +      21
    1764       G:   1C: Gaps              :    10901
    1765       G:   1C: Mean SNR          :     44.0
    1766       G:   1C: Mean Multipath    :     0.63
     2130<span class="go">      J:   1C: Observations      :  38040 (   39309)    96.77 %</span>
     2131<span class="go">      J:   1C: Slips (file+found):        0 +       0</span>
     2132<span class="go">      J:   1C: Gaps              :     1003</span>
     2133<span class="go">      J:   1C: Mean SNR          :     49.0</span>
     2134<span class="go">      J:   1C: Mean Multipath    :     0.33</span>
    17672135
    1768       G:   2W: Observations      : 422560 ( 1100652)    38.39 %
    1769       G:   2W: Slips (file+found):        0 +      19
    1770       G:   2W: Gaps              :    11133
    1771       G:   2W: Mean SNR          :     31.1
    1772       G:   2W: Mean Multipath    :     0.42
     2136<span class="go">      J:   1X: Observations      :  38040 (   39309)    96.77 %</span>
     2137<span class="go">      J:   1X: Slips (file+found):        0 +       0</span>
     2138<span class="go">      J:   1X: Gaps              :     1003</span>
     2139<span class="go">      J:   1X: Mean SNR          :     51.5</span>
     2140<span class="go">      J:   1X: Mean Multipath    :     0.32</span>
    17732141
    1774       G:   2X: Observations      : 205305 ( 1100652)    18.65 %
    1775       G:   2X: Slips (file+found):        0 +      10
    1776       G:   2X: Gaps              :     7269
    1777       G:   2X: Mean SNR          :     43.3
    1778       G:   2X: Mean Multipath    :     0.47
     2142<span class="go">      J:   1Z: Observations      :  38040 (   39309)    96.77 %</span>
     2143<span class="go">      J:   1Z: Slips (file+found):        0 +       0</span>
     2144<span class="go">      J:   1Z: Gaps              :     1003</span>
     2145<span class="go">      J:   1Z: Mean SNR          :     48.4</span>
     2146<span class="go">      J:   1Z: Mean Multipath    :     0.40</span>
    17792147
    1780       G:   5X: Observations      : 120638 ( 1100652)    10.96 %
    1781       G:   5X: Slips (file+found):        0 +       0
    1782       G:   5X: Gaps              :     3330
    1783       G:   5X: Mean SNR          :     49.9
    1784       G:   5X: Mean Multipath    :     0.00
     2148<span class="go">      J:   2X: Observations      :  38040 (   39309)    96.77 %</span>
     2149<span class="go">      J:   2X: Slips (file+found):        0 +       0</span>
     2150<span class="go">      J:   2X: Gaps              :     1003</span>
     2151<span class="go">      J:   2X: Mean SNR          :     48.7</span>
     2152<span class="go">      J:   2X: Mean Multipath    :     0.31</span>
    17852153
    1786   J: Satellites: 1
    1787   J: Signals   : 6    1C 1X 1Z 2X 5X 6L
     2154<span class="go">      J:   5X: Observations      :  38040 (   39309)    96.77 %</span>
     2155<span class="go">      J:   5X: Slips (file+found):        0 +       0</span>
     2156<span class="go">      J:   5X: Gaps              :     1003</span>
     2157<span class="go">      J:   5X: Mean SNR          :     53.0</span>
     2158<span class="go">      J:   5X: Mean Multipath    :     0.00</span>
    17882159
    1789       J:   1C: Observations      :  38040 (   39309)    96.77 %
    1790       J:   1C: Slips (file+found):        0 +       0
    1791       J:   1C: Gaps              :     1003
    1792       J:   1C: Mean SNR          :     49.0
    1793       J:   1C: Mean Multipath    :     0.33
     2160<span class="go">      J:   6L: Observations      :  38040 (   39309)    96.77 %</span>
     2161<span class="go">      J:   6L: Slips (file+found):        0 +       0</span>
     2162<span class="go">      J:   6L: Gaps              :     1003</span>
     2163<span class="go">      J:   6L: Mean SNR          :     50.6</span>
     2164<span class="go">      J:   6L: Mean Multipath    :     0.00</span>
    17942165
    1795       J:   1X: Observations      :  38040 (   39309)    96.77 %
    1796       J:   1X: Slips (file+found):        0 +       0
    1797       J:   1X: Gaps              :     1003
    1798       J:   1X: Mean SNR          :     51.5
    1799       J:   1X: Mean Multipath    :     0.32
     2166<span class="go">  R: Satellites: 23</span>
     2167<span class="go">  R: Signals   : 4    1C 1P 2C 2P</span>
    18002168
    1801       J:   1Z: Observations      :  38040 (   39309)    96.77 %
    1802       J:   1Z: Slips (file+found):        0 +       0
    1803       J:   1Z: Gaps              :     1003
    1804       J:   1Z: Mean SNR          :     48.4
    1805       J:   1Z: Mean Multipath    :     0.40
     2169<span class="go">      R:   1C: Observations      : 323918 (  904107)    35.83 %</span>
     2170<span class="go">      R:   1C: Slips (file+found):        0 +      44</span>
     2171<span class="go">      R:   1C: Gaps              :     7295</span>
     2172<span class="go">      R:   1C: Mean SNR          :     44.9</span>
     2173<span class="go">      R:   1C: Mean Multipath    :     0.77</span>
    18062174
    1807       J:   2X: Observations      :  38040 (   39309)    96.77 %
    1808       J:   2X: Slips (file+found):        0 +       0
    1809       J:   2X: Gaps              :     1003
    1810       J:   2X: Mean SNR          :     48.7
    1811       J:   2X: Mean Multipath    :     0.31
     2175<span class="go">      R:   1P: Observations      : 323761 (  904107)    35.81 %</span>
     2176<span class="go">      R:   1P: Slips (file+found):        0 +      44</span>
     2177<span class="go">      R:   1P: Gaps              :     7305</span>
     2178<span class="go">      R:   1P: Mean SNR          :     43.4</span>
     2179<span class="go">      R:   1P: Mean Multipath    :     0.58</span>
    18122180
    1813       J:   5X: Observations      :  38040 (   39309)    96.77 %
    1814       J:   5X: Slips (file+found):        0 +       0
    1815       J:   5X: Gaps              :     1003
    1816       J:   5X: Mean SNR          :     53.0
    1817       J:   5X: Mean Multipath    :     0.00
     2181<span class="go">      R:   2C: Observations      : 323521 (  904107)    35.78 %</span>
     2182<span class="go">      R:   2C: Slips (file+found):        0 +      44</span>
     2183<span class="go">      R:   2C: Gaps              :     7305</span>
     2184<span class="go">      R:   2C: Mean SNR          :     40.8</span>
     2185<span class="go">      R:   2C: Mean Multipath    :     0.56</span>
    18182186
    1819       J:   6L: Observations      :  38040 (   39309)    96.77 %
    1820       J:   6L: Slips (file+found):        0 +       0
    1821       J:   6L: Gaps              :     1003
    1822       J:   6L: Mean SNR          :     50.6
    1823       J:   6L: Mean Multipath    :     0.00
     2187<span class="go">      R:   2P: Observations      : 321751 (  904107)    35.59 %</span>
     2188<span class="go">      R:   2P: Slips (file+found):        0 +      37</span>
     2189<span class="go">      R:   2P: Gaps              :     7317</span>
     2190<span class="go">      R:   2P: Mean SNR          :     40.3</span>
     2191<span class="go">      R:   2P: Mean Multipath    :     0.49</span>
    18242192
    1825   R: Satellites: 23
    1826   R: Signals   : 4    1C 1P 2C 2P
     2193<span class="go">  S: Satellites: 4</span>
     2194<span class="go">  S: Signals   : 2    1C 5I</span>
    18272195
    1828       R:   1C: Observations      : 323918 (  904107)    35.83 %
    1829       R:   1C: Slips (file+found):        0 +      44
    1830       R:   1C: Gaps              :     7295
    1831       R:   1C: Mean SNR          :     44.9
    1832       R:   1C: Mean Multipath    :     0.77
     2196<span class="go">      S:   1C: Observations      : 152158 (  157236)    96.77 %</span>
     2197<span class="go">      S:   1C: Slips (file+found):        0 +       1</span>
     2198<span class="go">      S:   1C: Gaps              :     4013</span>
     2199<span class="go">      S:   1C: Mean SNR          :     40.4</span>
     2200<span class="go">      S:   1C: Mean Multipath    :     0.75</span>
    18332201
    1834       R:   1P: Observations      : 323761 (  904107)    35.81 %
    1835       R:   1P: Slips (file+found):        0 +      44
    1836       R:   1P: Gaps              :     7305
    1837       R:   1P: Mean SNR          :     43.4
    1838       R:   1P: Mean Multipath    :     0.58
     2202<span class="go">      S:   5I: Observations      :  76078 (  157236)    48.38 %</span>
     2203<span class="go">      S:   5I: Slips (file+found):        0 +       1</span>
     2204<span class="go">      S:   5I: Gaps              :     2007</span>
     2205<span class="go">      S:   5I: Mean SNR          :     44.1</span>
     2206<span class="go">      S:   5I: Mean Multipath    :     0.47</span>
    18392207
    1840       R:   2C: Observations      : 323521 (  904107)    35.78 %
    1841       R:   2C: Slips (file+found):        0 +      44
    1842       R:   2C: Gaps              :     7305
    1843       R:   2C: Mean SNR          :     40.8
    1844       R:   2C: Mean Multipath    :     0.56
    1845 
    1846       R:   2P: Observations      : 321751 (  904107)    35.59 %
    1847       R:   2P: Slips (file+found):        0 +      37
    1848       R:   2P: Gaps              :     7317
    1849       R:   2P: Mean SNR          :     40.3
    1850       R:   2P: Mean Multipath    :     0.49
    1851 
    1852   S: Satellites: 4
    1853   S: Signals   : 2    1C 5I
    1854 
    1855       S:   1C: Observations      : 152158 (  157236)    96.77 %
    1856       S:   1C: Slips (file+found):        0 +       1
    1857       S:   1C: Gaps              :     4013
    1858       S:   1C: Mean SNR          :     40.4
    1859       S:   1C: Mean Multipath    :     0.75
    1860 
    1861       S:   5I: Observations      :  76078 (  157236)    48.38 %
    1862       S:   5I: Slips (file+found):        0 +       1
    1863       S:   5I: Gaps              :     2007
    1864       S:   5I: Mean SNR          :     44.1
    1865       S:   5I: Mean Multipath    :     0.47
    1866 
    1867 > 2015 09 09 13 04 50.0000000 23  1.2
    1868 R09   1.46   36.90   8  L1C s. 34.3  C1C  . 0.00  L1P s. 33.2  C1P  . 0.00  L2C s. 26.4  C2C  . 0.00  L2P s. 22.1  C2P  . 0.00
    1869 R10  49.67   46.84   8  L1C .. 52.3  C1C  . 0.62  L1P .. 51.2  C1P  . 0.52  L2C .. 42.9  C2C  . 0.51  L2P .. 42.4  C2P  . 0.40
    1870 R11  68.25 -168.71   8  L1C .. 52.1  C1C  . 0.32  L1P .. 50.2  C1P  . 0.38  L2C .. 44.6  C2C  . 0.40  L2P .. 43.4  C2P  . 0.36
    1871 R12  15.62 -148.75   8  L1C .. 40.6  C1C  . 0.94  L1P .. 38.9  C1P  . 0.51  L2C .. 41.1  C2C  . 0.61  L2P .. 40.7  C2P  . 0.45
    1872 R20  26.26  150.44   8  L1C .. 40.2  C1C  . 0.90  L1P .. 38.8  C1P  . 0.63  L2C .. 44.8  C2C  . 0.57  L2P .. 44.4  C2P  . 0.46
    1873 R21  71.53 -163.80   8  L1C .. 53.3  C1C  . 0.32  L1P .. 51.6  C1P  . 0.40  L2C .. 50.3  C2C  . 0.43  L2P .. 49.3  C2P  . 0.39
    1874 R22  40.38  -54.63   8  L1C .. 50.0  C1C  . 0.44  L1P .. 48.7  C1P  . 0.46  L2C .. 47.1  C2C  . 0.49  L2P .. 46.7  C2P  . 0.44
    1875 E11  68.80  -54.74   8  L1X .. 49.9  C1X  . 0.22  L5X .. 49.8  C5X  . 0.19  L7X .. 49.1  C7X  . 0.00  L8X .. 55.3  C8X  . 0.00
    1876 E12  58.84  141.76   8  L1X .. 50.0  C1X  . 0.14  L5X .. 49.4  C5X  . 0.21  L7X .. 48.2  C7X  . 0.00  L8X .. 55.1  C8X  . 0.00
    1877 E18   0.00    0.00   8  L1X .. 53.5  C1X  . 0.11  L5X .. 51.0  C5X  . 0.15  L7X .. 50.1  C7X  . 0.00  L8X .. 56.5  C8X  . 0.00
    1878 J01  21.34   23.40  12  L1C .. 41.2  C1C  . 0.59  L1X .. 43.2  C1X  . 0.38  L1Z .. 41.3  C1Z  . 0.58  L2X .. 40.0  C2X  . 0.47  L5X .. 44.7  C5X  . 0.00  L6L .. 41.6  C6L  . 0.00
    1879 S27  16.04  -73.53   4  L1C .. 37.8  C1C  . 0.81  L5I .. 39.9  C5I  . 0.41
    1880 S28  38.63  -50.63   4  L1C .. 45.5  C1C  . 0.49  L5I .. 47.4  C5I  . 0.48
    1881 S29  41.28   46.44   2  L1C .. 43.2  C1C  . 0.00
    1882 S37  41.28   46.44   2  L1C .. 42.1  C1C  . 0.00
    1883 C01  45.38   41.07   6  L2I .. 42.1  C2I  . 0.20  L6I .. 45.1  C6I  . 0.00  L7I .. 46.0  C7I  . 0.22
    1884 C02  36.53  -53.83   6  L2I .. 37.1  C2I  . 0.31  L6I .. 42.6  C6I  . 0.00  L7I .. 41.3  C7I  . 0.24
    1885 C03  53.80  -10.40   6  L2I .. 42.8  C2I  . 0.19  L6I .. 47.3  C6I  . 0.00  L7I .. 46.0  C7I  . 0.21
    1886 C04  30.52   62.20   6  L2I .. 37.3  C2I  . 0.33  L6I .. 42.4  C6I  . 0.00  L7I .. 41.3  C7I  . 0.25
    1887 C05  19.48  -71.66   6  L2I .. 36.6  C2I  . 0.40  L6I .. 40.0  C6I  . 0.00  L7I .. 38.5  C7I  . 0.37
    1888 C07  63.30   26.64   6  L2I .. 48.5  C2I  . 0.41  L6I .. 49.3  C6I  . 0.00  L7I .. 48.1  C7I  . 0.25
    1889 C08  76.83 -113.07   6  L2I .. 48.9  C2I  . 0.22  L6I .. 50.5  C6I  . 0.00  L7I .. 48.7  C7I  . 0.24
    1890 C10  83.00  -66.65   6  L2I .. 48.8  C2I  . 0.20  L6I .. 50.0  C6I  . 0.00  L7I .. 48.1  C7I  . 0.23
    1891 > 2015 09 09 13 04 52.0000000 33  0.9
    1892 ...
    1893 </pre>
    1894 </p>
    1895 <p>
    1896 Note that in addition to cycle slips recorded in the RINEX 'file', cycle slips identified by BNC are reported as 'found'.
    1897 </p>
    1898 
    1899 <p><h4>2.6.5 <a name="reqcplots">Plots for Signals - mandatory if 'Action' is set to 'Analyze'</h4></p>
    1900 <p>
    1901 Multipath and signal-to-noise sky plots as well as plots for satellite availability, elevation and PDOP are produced per GNSS system and frequency with the multipath analysis based on CnC observation types (n = band / frequency). The 'Plots for signals' option lets you exactly specify the observation signals to be used for that and also enables the plot production. You can specify the navigation system (C = BDS, E = Galileo, G = GPS, J = QZSS, R = GLONASS, S = SBAS), the frequency, and the tracking mode or channel as defined in RINEX Version 3. Specifications for frequency and tracking mode or channel must be separated by ampersand character '&'. Specifications for each navigation systems must be separated by blank character ' '. The following string is an example for option field 'Plots of signals':
    1902 <br>
    1903 <pre>
    1904    C:2&7 E:1&5 G:1&2 J:1&2 R:1&2 S:1&5
    1905 </pre>
    1906 This default configuration will present:
    1907 <ul>
     2208<span class="gp">&gt;</span> <span class="m">2015</span> <span class="m">09</span> <span class="m">09</span> <span class="m">13</span> <span class="m">04</span> 50.0000000 <span class="m">23</span>  1.2
     2209<span class="go">R09   1.46   36.90   8  L1C s. 34.3  C1C  . 0.00  L1P s. 33.2  C1P  . 0.00  L2C s. 26.4  C2C  . 0.00  L2P s. 22.1  C2P  . 0.00</span>
     2210<span class="go">R10  49.67   46.84   8  L1C .. 52.3  C1C  . 0.62  L1P .. 51.2  C1P  . 0.52  L2C .. 42.9  C2C  . 0.51  L2P .. 42.4  C2P  . 0.40</span>
     2211<span class="go">R11  68.25 -168.71   8  L1C .. 52.1  C1C  . 0.32  L1P .. 50.2  C1P  . 0.38  L2C .. 44.6  C2C  . 0.40  L2P .. 43.4  C2P  . 0.36</span>
     2212<span class="go">R12  15.62 -148.75   8  L1C .. 40.6  C1C  . 0.94  L1P .. 38.9  C1P  . 0.51  L2C .. 41.1  C2C  . 0.61  L2P .. 40.7  C2P  . 0.45</span>
     2213<span class="go">R20  26.26  150.44   8  L1C .. 40.2  C1C  . 0.90  L1P .. 38.8  C1P  . 0.63  L2C .. 44.8  C2C  . 0.57  L2P .. 44.4  C2P  . 0.46</span>
     2214<span class="go">R21  71.53 -163.80   8  L1C .. 53.3  C1C  . 0.32  L1P .. 51.6  C1P  . 0.40  L2C .. 50.3  C2C  . 0.43  L2P .. 49.3  C2P  . 0.39</span>
     2215<span class="go">R22  40.38  -54.63   8  L1C .. 50.0  C1C  . 0.44  L1P .. 48.7  C1P  . 0.46  L2C .. 47.1  C2C  . 0.49  L2P .. 46.7  C2P  . 0.44</span>
     2216<span class="go">E11  68.80  -54.74   8  L1X .. 49.9  C1X  . 0.22  L5X .. 49.8  C5X  . 0.19  L7X .. 49.1  C7X  . 0.00  L8X .. 55.3  C8X  . 0.00</span>
     2217<span class="go">E12  58.84  141.76   8  L1X .. 50.0  C1X  . 0.14  L5X .. 49.4  C5X  . 0.21  L7X .. 48.2  C7X  . 0.00  L8X .. 55.1  C8X  . 0.00</span>
     2218<span class="go">E18   0.00    0.00   8  L1X .. 53.5  C1X  . 0.11  L5X .. 51.0  C5X  . 0.15  L7X .. 50.1  C7X  . 0.00  L8X .. 56.5  C8X  . 0.00</span>
     2219<span class="go">J01  21.34   23.40  12  L1C .. 41.2  C1C  . 0.59  L1X .. 43.2  C1X  . 0.38  L1Z .. 41.3  C1Z  . 0.58  L2X .. 40.0  C2X  . 0.47  L5X .. 44.7  C5X  . 0.00  L6L .. 41.6  C6L  . 0.00</span>
     2220<span class="go">S27  16.04  -73.53   4  L1C .. 37.8  C1C  . 0.81  L5I .. 39.9  C5I  . 0.41</span>
     2221<span class="go">S28  38.63  -50.63   4  L1C .. 45.5  C1C  . 0.49  L5I .. 47.4  C5I  . 0.48</span>
     2222<span class="go">S29  41.28   46.44   2  L1C .. 43.2  C1C  . 0.00</span>
     2223<span class="go">S37  41.28   46.44   2  L1C .. 42.1  C1C  . 0.00</span>
     2224<span class="go">C01  45.38   41.07   6  L2I .. 42.1  C2I  . 0.20  L6I .. 45.1  C6I  . 0.00  L7I .. 46.0  C7I  . 0.22</span>
     2225<span class="go">C02  36.53  -53.83   6  L2I .. 37.1  C2I  . 0.31  L6I .. 42.6  C6I  . 0.00  L7I .. 41.3  C7I  . 0.24</span>
     2226<span class="go">C03  53.80  -10.40   6  L2I .. 42.8  C2I  . 0.19  L6I .. 47.3  C6I  . 0.00  L7I .. 46.0  C7I  . 0.21</span>
     2227<span class="go">C04  30.52   62.20   6  L2I .. 37.3  C2I  . 0.33  L6I .. 42.4  C6I  . 0.00  L7I .. 41.3  C7I  . 0.25</span>
     2228<span class="go">C05  19.48  -71.66   6  L2I .. 36.6  C2I  . 0.40  L6I .. 40.0  C6I  . 0.00  L7I .. 38.5  C7I  . 0.37</span>
     2229<span class="go">C07  63.30   26.64   6  L2I .. 48.5  C2I  . 0.41  L6I .. 49.3  C6I  . 0.00  L7I .. 48.1  C7I  . 0.25</span>
     2230<span class="go">C08  76.83 -113.07   6  L2I .. 48.9  C2I  . 0.22  L6I .. 50.5  C6I  . 0.00  L7I .. 48.7  C7I  . 0.24</span>
     2231<span class="go">C10  83.00  -66.65   6  L2I .. 48.8  C2I  . 0.20  L6I .. 50.0  C6I  . 0.00  L7I .. 48.1  C7I  . 0.23</span>
     2232<span class="gp">&gt;</span> <span class="m">2015</span> <span class="m">09</span> <span class="m">09</span> <span class="m">13</span> <span class="m">04</span> 52.0000000 <span class="m">33</span>  0.9
     2233<span class="go">...</span>
     2234</pre></div>
     2235</div>
     2236<p>Note that in addition to cycle slips recorded in the RINEX &#8216;file&#8217;, cycle slips identified by BNC are reported as &#8216;found&#8217;.</p>
     2237</div>
     2238<div class="section" id="plots-for-signals-mandatory-if-action-is-set-to-analyze">
     2239<h4>Plots for Signals - mandatory if &#8216;Action&#8217; is set to &#8216;Analyze&#8217;<a class="headerlink" href="#plots-for-signals-mandatory-if-action-is-set-to-analyze" title="Permalink to this headline">¶</a></h4>
     2240<p>Multipath and signal-to-noise sky plots as well as plots for satellite availability, elevation and PDOP are produced <a class="reference internal" href="#fig-13"><span class="std std-numref">(Fig. 11</span></a>, <a class="reference internal" href="#fig-14"><span class="std std-numref">12</span></a>, <a class="reference internal" href="#fig-15"><span class="std std-numref">13)</span></a> per GNSS system and frequency with the multipath analysis based on CnC observation types (n = band / frequency). The &#8216;Plots for signals&#8217; option lets you exactly specify the observation signals to be used for that and also enables the plot production. You can specify the navigation system (C = BDS, E = Galileo, G = GPS, J = QZSS, R = GLONASS, S = SBAS), the frequency, and the tracking mode or channel as defined in RINEX Version 3. Specifications for frequency and tracking mode or channel must be separated by ampersand character &#8216;&amp;&#8217;. Specifications for each navigation systems must be separated by blank character &#8216; &#8216;. The following string is an example for option field &#8216;Plots of signals&#8217;:</p>
     2241<div class="highlight-console"><div class="highlight"><pre><span class="go">C:2&amp;7 E:1&amp;5 G:1&amp;2 J:1&amp;2 R:1&amp;2 S:1&amp;5</span>
     2242</pre></div>
     2243</div>
     2244<p>This default configuration will present:</p>
     2245<ul class="simple">
    19082246<li>BDS plots for L2 and L7,</li>
    19092247<li>Galileo plots for L1 and L5,</li>
    … …  
    19132251<li>SBAS plots for L1 and L5.</li>
    19142252</ul>
    1915 </p>
    1916 
    1917 <p><h4>2.6.6 <a name="reqcdir">Directory for Plots - optional if 'Action' is set to 'Analyze'</h4></p>
    1918 <p>
    1919 If 'Analyze' is selected, specifying the path to a directory where plot files will be saved is optional. Filenames will be composed from the RINEX input filename(s) plus suffix 'PNG' to indicate the plot file format in use. Default is an empty option field, meaning that plots will not be saved on disk.
    1920 </p>
    1921 
    1922 <p><h4>2.6.7 <a name="reqcedit">Set Edit Options - mandatory if 'Action' is set to 'Edit/Concatenate'</h4></p>
    1923 <p>Once the 'Edit/Concatenate' action is selected, you have to 'Set Edit Options'. BNC lets you specify the RINEX version, a signal priority list when mapping RINEX Version 3 to Version 2, the sampling interval, begin and end of file, operator, observation types, comment lines, and marker, antenna, receiver details. Note that some of the specifications for editing and concatenation are only meaningful for RINEX Observation files but not for RINEX Navigation files.
    1924 </p>
    1925 
    1926 <p>
    1927 A note on converting RINEX Version 3 to RINEX Version 2 and vice versa:
    1928 </p>
    1929 
    1930 <p>
     2253</div>
     2254<div class="section" id="directory-for-plots-optional-if-action-is-set-to-analyze">
     2255<h4>Directory for Plots - optional if &#8216;Action&#8217; is set to &#8216;Analyze&#8217;<a class="headerlink" href="#directory-for-plots-optional-if-action-is-set-to-analyze" title="Permalink to this headline">¶</a></h4>
     2256<p>If &#8216;Analyze&#8217; <a class="reference internal" href="#fig-12"><span class="std std-numref">(see Fig. 16)</span></a> is selected, specifying the path to a directory where plot files will be saved is optional. Filenames will be composed from the RINEX input filename(s) plus suffix &#8216;PNG&#8217; to indicate the plot file format in use. Default is an empty option field, meaning that plots will not be saved on disk.</p>
     2257</div>
     2258<div class="section" id="set-edit-options-mandatory-if-action-is-set-to-edit-concatenate">
     2259<h4>Set Edit Options - mandatory if &#8216;Action&#8217; is set to &#8216;Edit/Concatenate&#8217;<a class="headerlink" href="#set-edit-options-mandatory-if-action-is-set-to-edit-concatenate" title="Permalink to this headline">¶</a></h4>
     2260<p>Once the &#8216;Edit/Concatenate&#8217; action is selected, you have to &#8216;Set Edit Options&#8217; <a class="reference internal" href="#fig-10"><span class="std std-numref">(see Fig. 14)</span></a>. BNC lets you specify the RINEX version, a signal priority list when mapping RINEX Version 3 to Version 2, the sampling interval, begin and end of file, operator, observation types, comment lines, and marker, antenna, receiver details. Note that some of the specifications for editing and concatenation <a class="reference internal" href="#fig-11"><span class="std std-numref">(see Fig. 15)</span></a> are only meaningful for RINEX Observation files but not for RINEX Navigation files.</p>
     2261<p>A note on converting RINEX Version 3 to RINEX Version 2 and vice versa:</p>
    19312262<ul>
    1932 <li>The RINEX Version 2 format ignores signal generation attributes. Therefore, when converting <u>RINEX Version 3 to Version 2</u> Observation files, BNC is forced to somehow map signals with attributes to signals without attributes although this cannot be done in one-to-one correspondence. Hence we introduce a 'Version 2 Signal Priority' list of attributes (characters, forming a string) for mapping Version 3 to Version 2, see details in section 'RINEX Observations/Version 2'. Signal priorities can be specified as equal for all systems, as system specific or as system and frequency specific. For example:</li>
    1933 <ul>
    1934 <li>'CWPX_?' (General signal priorities valid for all GNSS)</li>
    1935 <li>'C:IQX I:ABCX' (System specific signal priorities for BDS and IRNSS)</li>
    1936 <li>'G:12&PWCSLXYN G:5&IQX R:12&PC R:3&IQX' (System and frequency specific signal priorities)</li>
    1937 </ul>
    1938 </p>
    1939 <p>
    1940 The default 'Signal priority' list is defined as follows:
    1941 <ul>
    1942  <li>'G:12&PWCSLXYN G:5&IQX R:12&PC R:3&IQX E:16&BCX E:578&IQX J:1&SLXCZ J:26&SLX J:5&IQX C:IQX I:ABCX S:1&C S:5&IQX'</li>
    1943 </ul>
    1944 </p>
    1945 <p>
    1946 <li>When converting <u>RINEX Version 2 to Version 3</u> Observation files, the tracking mode or channel information in the (last character out of the 3-character) observation code is left blank if unknown. This is a compromise, knowing that it is not in accordance with the RINEX Version 3 documentation.</li>
    1947 </ul>
    1948 </p>
    1949 
    1950 <p>
    1951 Optionally you may specify a 'RUN BY' string to be included in the emerging new RINEX file header. Default is an empty option field, meaning the operator's ID is automatically used as 'RUN BY' string.
    1952 </p>
    1953 
    1954 <p>
    1955 You can specify a list of observation codes in field 'Use Obs. Types' to limit the output file content to specific observation codes. GNSS system characters in that list are followed by a colon and a 2- or 3-Character observation code. A 2-Character observation code would mean that all available tracking modes of the affected observation type and frequency will be accepted as part of the RINEX output file. Observation codes are separated by a blank character. Default is an empty option field, meaning that any input observation code will become part of the RINEX output file.
    1956 </p>
    1957 
    1958 <p>
    1959 Specifying comment line text to be added to the emerging new RINEX file header is another option. Any introduction of a newline through '\n' in this enforces the beginning of a further comment line. Comment lines will be added to the header immediately after the 'PGM / RUN BY / DATE' record. Default is an empty option field, meaning that no additional comment line will be added to the RINEX header.
    1960 </p>
    1961 
    1962 <p>
    1963 If you specify a 'New' but no 'Old' marker/antenna/receiver name, the corresponding data field in the emerging new RINEX Observation file will be filled accordingly. If you in addition specify an 'Old' marker/antenna/receiver name, the corresponding data field in the emerging new RINEX Observation file will only be filled accordingly where 'Old' specifications match existing file content.
    1964 </p>
    1965 
    1966 <p><img src="IMG/screenshot27.png"/></p>
    1967 <p><u>Figure 10:</u> Example for BNC's 'RINEX Editing Options' window</p>
    1968 
    1969 <p><img src="IMG/screenshot25.png"/></p>
    1970 <p><u>Figure 11:</u> Example for RINEX file concatenation with BNC</p>
    1971 
    1972 <p><img src="IMG/screenshot29.png"/></p>
    1973 <p><u>Figure 12:</u> Example for creating RINEX quality check analysis graphics output with BNC</p>
    1974 
    1975 <p><img src="IMG/screenshot30.png"/></p>
    1976 <p><u>Figure 13:</u> Example for satellite availability, elevation and PDOP plots as a result of a RINEX quality check analysis with BNC</p>
    1977 
    1978 <p><img src="IMG/screenshot33.png"/></p>
    1979 <p><u>Figure 14:</u> Sky plot examples for multipath, part of RINEX quality check analysis with BNC</p>
    1980 
    1981 <p><img src="IMG/screenshot34.png"/></p>
    1982 <p><u>Figure 15:</u> Sky plot examples for signal-to-noise ratio, part of RINEX quality check analysis with BNC</p>
    1983 
    1984 <p><h4>2.6.8 <a name="reqccommand">Command Line, No Window - optional</h4></p>
    1985 <p>
    1986 BNC applies options from the configuration file but allows updating every one of them on the command line while the content of the configuration file remains unchanged, see section on 'Command Line Options'. Note the following syntax for Command Line Interface (CLI) options:
    1987 </p>
    1988 <pre>
    1989    --key &lt;keyName&gt; &lt;keyValue&gt;
    1990 </pre>
    1991 <p>
    1992 Parameter &lt;keyName&gt; stands for the name of an option contained in the configuration file and &lt;keyValue&gt; stands for the value you want to assign to it. This functionality may be helpful in the 'RINEX Editing & QC' context when running BNC on a routine basis for maintaining a RINEX file archive.
    1993 </p>
    1994 The following example for a Linux platform calls BNC in 'no window' mode with a local configuration file 'rnx.conf' for concatenating four 15min RINEX files from station TLSE residing in the working directory to produce an hourly RINEX Version 3 file with 30 seconds sampling interval:
    1995 </p>
    1996 <pre>
    1997    ./bnc --nw --conf rnx.conf --key reqcAction Edit/Concatenate --key reqcObsFile
    1998    "tlse119b00.12o,tlse119b15.12o,tlse119b30.12o,tlse119b45.12o" --key
    1999    reqcOutObsFile tlse119b.12o --key reqcRnxVersion 3 --key reqcSampling 30
    2000 </pre>
    2001 <p>
    2002 You may use asterisk '*' and/or question mark '?' wildcard characters as shown with the following globbing command line option to specify a selection of files in the working directory:
    2003 <pre>
    2004    --key reqcObsFile "tlse*"
    2005 or:
    2006    --key reqcObsFile tlse\*
    2007 </pre>
    2008 </p>
    2009 
    2010 <p>The following Linux command line produces RINEX QC plots (see Estey and Meertens 1999) offline in 'no window' mode and saves them in directory '/home/user'. Introducing a dummy configuration file /dev/null makes sure that no configuration options previously saved on disc are used:</p>
    2011 <pre>
    2012    /home/user/bnc --conf /dev/null --key reqcAction Analyze --key reqcObsFile
    2013    CUT02070.12O --key reqcNavFile BRDC2070.12P --key reqcOutLogFile CUT0.txt --key
    2014    reqcPlotDir /home/user --nw
    2015 </pre>
    2016 </p>
    2017 <p>The following Linux command line produces the same RINEX QC plots in interactive autoStart mode:
    2018 </p>
    2019 <pre>
    2020    /home/user/bnc --conf /dev/null --key reqcAction Analyze --key reqcObsFile
    2021    CUT02070.12O --key reqcNavFile BRDC2070.12P --key reqcOutLogFile CUT0.txt --key
    2022    --key startTab 4 --key autoStart 2
    2023 </pre>
    2024 </p>
    2025 
    2026 <p>
    2027 The following is a list of available key names for '<u>R</u>INEX <u>E</u>diting & <u>QC</u>' (short: REQC, pronounced 'rek') options and their meaning, cf. section 'Configuration Examples':
    2028 </p>
    2029 <table>
    2030 <tr></tr>
    2031 <tr><td><b>Keyname</b></td><td><b>Meaning</b></td></tr>
    2032 <tr><td>reqcAction</td><td>RINEX Editing & QC action</td></tr>
    2033 <tr><td>reqcObsFile</td><td>RINEX Observation input file(s)</td></tr>
    2034 <tr><td>reqcNavFile</td><td>RINEX Navigation input files(s)</td></tr>
    2035 <tr><td>reqcOutObsFile</td><td>RINEX Observation output file</td></tr>
    2036 <tr><td>reqcOutNavFile</td><td>RINEX Navigation output file</td></tr>
    2037 <tr><td>reqcOutLogFile</td><td>Logfile</td></tr>
    2038 <tr><td>reqcLogSummaryOnly</td><td>Summary of Logfile</td></tr>
    2039 <tr><td>reqcSkyPlotSignals</td><td>Plots for signals</td></tr>
    2040 <tr><td>reqcPlotDir</td><td>RINEX QC plot directory</td></tr>
    2041 <tr><td>reqcRnxVersion</td><td>RINEX version of emerging new file</td></tr>
    2042 <tr><td>reqcSampling</td><td>Sampling interval of emerging new RINEX file</td></tr>
    2043 <tr><td>reqcV2Priority</td><td>Version 2 Signal Priority</td></tr>
    2044 <tr><td>reqcStartDateTime</td><td>Begin of emerging new RINEX file</td></tr>
    2045 <tr><td>reqcEndDateTime</td><td>End of emerging new RINEX file</td></tr>
    2046 <tr><td>reqcRunBy</td><td>Operator name</td></tr>
    2047 <tr><td>reqcUseObsTypes</td><td>GNSS systems and observation types</td></tr>
    2048 <tr><td>reqcComment</td><td>Additional comment lines</td></tr>
    2049 <tr><td>reqcOldMarkerName</td><td>Old marker name</td></tr>
    2050 <tr><td>reqcNewMarkerName</td><td>New marker name</td></tr>
    2051 <tr><td>reqcOldAntennaName</td><td>Old antenna name</td></tr>
    2052 <tr><td>reqcNewAntennaName</td><td>New antenna name</td></tr>
    2053 <tr><td>reqcOldAntennaNumber</td><td>Old antenna number</td></tr>
    2054 <tr><td>reqcNewAntennaNumber</td><td>New antenna number</td></tr>
    2055 <tr><td>reqcOldAntennadN</td><td>Old component of north eccentricity</td></tr>
    2056 <tr><td>reqcOldAntennadE</td><td>Old component of east eccentricity</td></tr>
    2057 <tr><td>reqcOldAntennadU</td><td>Old component of up eccentricity</td></tr>
    2058 <tr><td>reqcNewAntennadN</td><td>New component of north eccentricity</td></tr>
    2059 <tr><td>reqcNewAntennadE</td><td>New component of east eccentricity</td></tr>
    2060 <tr><td>reqcNewAntennadU</td><td>New component of up eccentricity</td></tr>
    2061 <tr><td>reqcOldReceiverName</td><td>Old receiver name</td></tr>
    2062 <tr><td>reqcNewReceiverName</td><td>New receiver name</td></tr>
    2063 <tr><td>reqcOldReceiverNumber</td><td>Old receiver number</td></tr>
    2064 <tr><td>reqcNewReceiverNumber</td><td>New receiver number</td></tr>
     2263<li><p class="first">The RINEX Version 2 format ignores signal generation attributes. Therefore, when converting RINEX Version 3 to Version 2 Observation files, BNC is forced to somehow map signals with attributes to signals without attributes although this cannot be done in one-to-one correspondence. Hence we introduce a &#8216;Version 2 Signal Priority&#8217; list of attributes (characters, forming a string) for mapping Version 3 to Version 2, see details in section &#8216;RINEX Observations/Version 2&#8217;. Signal priorities can be specified as equal for all systems, as system specific or as system and frequency specific. For example:</p>
     2264<ul class="simple">
     2265<li>&#8216;<a href="#id76"><span class="problematic" id="id77">CWPX_</span></a>?&#8217; (General signal priorities valid for all GNSS)</li>
     2266<li>&#8216;C:IQX I:ABCX&#8217; (System specific signal priorities for BDS and IRNSS)</li>
     2267<li>&#8216;G:12&amp;PWCSLXYN G:5&amp;IQX R:12&amp;PC R:3&amp;IQX&#8217; (System and frequency specific signal priorities)</li>
     2268</ul>
     2269<p>The default &#8216;Signal priority&#8217; list is defined as follows: &#8216;G:12&amp;PWCSLXYN G:5&amp;IQX R:12&amp;PC R:3&amp;IQX E:16&amp;BCX E:578&amp;IQX J:1&amp;SLXCZ J:26&amp;SLX J:5&amp;IQX C:IQX I:ABCX S:1&amp;C S:5&amp;IQX&#8217;</p>
     2270</li>
     2271<li><p class="first">When converting RINEX Version 2 to Version 3 Observation files, the tracking mode or channel information in the (last character out of the 3-character) observation code is left blank if unknown. This is a compromise, knowing that it is not in accordance with the RINEX Version 3 documentation.</p>
     2272</li>
     2273</ul>
     2274<p>Optionally you may specify a &#8216;RUN BY&#8217; string to be included in the emerging new RINEX file header. Default is an empty option field, meaning the operator&#8217;s ID is automatically used as &#8216;RUN BY&#8217; string.</p>
     2275<p>You can specify a list of observation codes in field &#8216;Use Obs. Types&#8217; to limit the output file content to specific observation codes. GNSS system characters in that list are followed by a colon and a 2- or 3-character observation code. A 2-character observation code would mean that all available tracking modes of the affected observation type and frequency will be accepted as part of the RINEX output file. Observation codes are separated by a blank character. Default is an empty option field, meaning that any input observation code will become part of the RINEX output file.</p>
     2276<p>Specifying comment line text to be added to the emerging new RINEX file header is another option. Any introduction of a newline through &#8216;\n&#8217; in this enforces the beginning of a further comment line. Comment lines will be added to the header immediately after the &#8216;PGM / RUN BY / DATE&#8217; record. Default is an empty option field, meaning that no additional comment line will be added to the RINEX header.</p>
     2277<p>If you specify a &#8216;New&#8217; but no &#8216;Old&#8217; marker/antenna/receiver name, the corresponding data field in the emerging new RINEX Observation file will be filled accordingly. If you in addition specify an &#8216;Old&#8217; marker/antenna/receiver name, the corresponding data field in the emerging new RINEX Observation file will only be filled accordingly where &#8216;Old&#8217; specifications match existing file content.</p>
     2278<div class="figure" id="id27">
     2279<span id="fig-13"></span><a class="reference internal image-reference" href="_images/fig_13.png"><img alt="_images/fig_13.png" src="_images/fig_13.png" style="width: 961.2px; height: 629.1px;" /></a>
     2280<p class="caption"><span class="caption-number">Fig. 11 </span><span class="caption-text">Example for satellite availability, elevation and PDOP plots as a result of a RINEX Quality Check analysis with BNC</span></p>
     2281</div>
     2282<div class="figure" id="id28">
     2283<span id="fig-14"></span><a class="reference internal image-reference" href="_images/fig_14.png"><img alt="_images/fig_14.png" src="_images/fig_14.png" style="width: 920.7px; height: 593.1px;" /></a>
     2284<p class="caption"><span class="caption-number">Fig. 12 </span><span class="caption-text">Sky plot examples for multipath, part of RINEX quality check analysis with BNC</span></p>
     2285</div>
     2286<div class="figure" id="id29">
     2287<span id="fig-15"></span><a class="reference internal image-reference" href="_images/fig_15.png"><img alt="_images/fig_15.png" src="_images/fig_15.png" style="width: 918.0px; height: 589.5px;" /></a>
     2288<p class="caption"><span class="caption-number">Fig. 13 </span><span class="caption-text">Sky plot examples for signal-to-noise ratio, part of RINEX quality check analysis with BNC</span></p>
     2289</div>
     2290<div class="figure" id="id30">
     2291<span id="fig-10"></span><a class="reference internal image-reference" href="_images/fig_10.png"><img alt="_images/fig_10.png" src="_images/fig_10.png" style="width: 680.4px; height: 522.0px;" /></a>
     2292<p class="caption"><span class="caption-number">Fig. 14 </span><span class="caption-text">Example for BNC&#8217;s &#8216;RINEX Editing Options&#8217; window</span></p>
     2293</div>
     2294<div class="figure" id="id31">
     2295<span id="fig-11"></span><a class="reference internal image-reference" href="_images/fig_11.png"><img alt="_images/fig_11.png" src="_images/fig_11.png" style="width: 900.9px; height: 648.9px;" /></a>
     2296<p class="caption"><span class="caption-number">Fig. 15 </span><span class="caption-text">Example for RINEX file concatenation with BNC</span></p>
     2297</div>
     2298<div class="figure" id="id32">
     2299<span id="fig-12"></span><a class="reference internal image-reference" href="_images/fig_12.png"><img alt="_images/fig_12.png" src="_images/fig_12.png" style="width: 900.0px; height: 649.8000000000001px;" /></a>
     2300<p class="caption"><span class="caption-number">Fig. 16 </span><span class="caption-text">Example for creating RINEX quality check analysis graphics output with BNC</span></p>
     2301</div>
     2302</div>
     2303<div class="section" id="command-line-no-window-optional">
     2304<span id="index-18"></span><h4>Command Line, No Window - optional<a class="headerlink" href="#command-line-no-window-optional" title="Permalink to this headline">¶</a></h4>
     2305<p>BNC applies options from the configuration file but allows updating every one of them on the command line while the content of the configuration file remains unchanged, see section on &#8216;Command Line Options&#8217;. Note the following syntax for Command Line Interface (CLI) options:</p>
     2306<div class="highlight-console"><div class="highlight"><pre><span class="go">--key &lt;keyName&gt; &lt;keyValue&gt;</span>
     2307</pre></div>
     2308</div>
     2309<p>Parameter &lt;keyName&gt; stands for the name of an option contained in the configuration file and &lt;keyValue&gt; stands for the value you want to assign to it. This functionality may be helpful in the &#8216;RINEX Editing &amp; QC&#8217; context when running BNC on a routine basis for maintaining a RINEX file archive. The following example for a Linux platform calls BNC in &#8216;no window&#8217; mode with a local configuration file &#8216;rnx.conf&#8217; for concatenating four 15min RINEX files from station TLSE residing in the working directory to produce an hourly RINEX Version 3 file with 30 seconds sampling interval:</p>
     2310<div class="highlight-console"><div class="highlight"><pre><span class="go">./bnc --nw --conf rnx.conf --key reqcAction Edit/Concatenate --key reqcObsFile &quot;tlse119b00.12o,tlse119b15.12o,tlse119b30.12o,tlse119b45.12o&quot; --key reqcOutObsFile tlse119b.12o --key reqcRnxVersion 3 --key reqcSampling 30</span>
     2311</pre></div>
     2312</div>
     2313<p>You may use asterisk &#8216;*&#8217; and/or question mark &#8216;?&#8217; wildcard characters as shown with the following globbing command line option to specify a selection of files in the working directory:</p>
     2314<div class="highlight-console"><div class="highlight"><pre><span class="go">--key reqcObsFile &quot;tlse*&quot;</span>
     2315</pre></div>
     2316</div>
     2317<p>or</p>
     2318<div class="highlight-console"><div class="highlight"><pre><span class="go">--key reqcObsFile tlse\*</span>
     2319</pre></div>
     2320</div>
     2321<p>The following Linux command line produces RINEX QC plots (see Estey and Meertens 1999) offline in &#8216;no window&#8217; mode and saves them in directory <code class="docutils literal"><span class="pre">/home/user</span></code>. Introducing a dummy configuration file <code class="docutils literal"><span class="pre">/dev/null</span></code> makes sure that no configuration options previously saved on disc are used:</p>
     2322<div class="highlight-console"><div class="highlight"><pre><span class="go">/home/user/bnc --conf /dev/null --key reqcAction Analyze --key reqcObsFile CUT02070.12O --key reqcNavFile BRDC2070.12P --key reqcOutLogFile CUT0.txt --key reqcPlotDir /home/user --nw</span>
     2323</pre></div>
     2324</div>
     2325<p>The following Linux command line produces the same RINEX QC plots in interactive autoStart mode:</p>
     2326<div class="highlight-console"><div class="highlight"><pre><span class="go">/home/user/bnc --conf /dev/null --key reqcAction Analyze --key reqcObsFile CUT02070.12O --key reqcNavFile BRDC2070.12P --key reqcOutLogFile CUT0.txt --key startTab 4 --key autoStart 2</span>
     2327</pre></div>
     2328</div>
     2329<p><a class="reference internal" href="#tab-rinex-ed-qc-opt"><span class="std std-numref">Table 3</span></a> gives a list of available key names for &#8216;RINEX Editing &amp; QC&#8217; (short: REQC, pronounced &#8216;rek&#8217;) options and their meaning, cf. section &#8216;Configuration Examples&#8217;.</p>
     2330<table border="1" class="docutils" id="id33">
     2331<span id="tab-rinex-ed-qc-opt"></span><caption><span class="caption-number">Table 3 </span><span class="caption-text">Key names for &#8216;RINEX Editing &amp; QC&#8217; options and their meaning.</span><a class="headerlink" href="#id33" title="Permalink to this table">¶</a></caption>
     2332<colgroup>
     2333<col width="32%" />
     2334<col width="68%" />
     2335</colgroup>
     2336<thead valign="bottom">
     2337<tr class="row-odd"><th class="head"><strong>Keyname</strong></th>
     2338<th class="head"><strong>Meaning</strong></th>
     2339</tr>
     2340</thead>
     2341<tbody valign="top">
     2342<tr class="row-even"><td>reqcAction</td>
     2343<td>RINEX Editing &amp; QC action</td>
     2344</tr>
     2345<tr class="row-odd"><td>reqcObsFile</td>
     2346<td>RINEX Observation input file(s)</td>
     2347</tr>
     2348<tr class="row-even"><td>reqcNavFile</td>
     2349<td>RINEX Navigation input files(s)</td>
     2350</tr>
     2351<tr class="row-odd"><td>reqcOutObsFile</td>
     2352<td>RINEX Observation output file</td>
     2353</tr>
     2354<tr class="row-even"><td>reqcOutNavFile</td>
     2355<td>RINEX Navigation output file</td>
     2356</tr>
     2357<tr class="row-odd"><td>reqcOutLogFile</td>
     2358<td>Logfile</td>
     2359</tr>
     2360<tr class="row-even"><td>reqcLogSummaryOnly</td>
     2361<td>Summary of Logfile</td>
     2362</tr>
     2363<tr class="row-odd"><td>reqcSkyPlotSignals</td>
     2364<td>Plots for signals</td>
     2365</tr>
     2366<tr class="row-even"><td>reqcPlotDir</td>
     2367<td>RINEX QC plot directory</td>
     2368</tr>
     2369<tr class="row-odd"><td>reqcRnxVersion</td>
     2370<td>RINEX version of emerging new file</td>
     2371</tr>
     2372<tr class="row-even"><td>reqcSampling</td>
     2373<td>Sampling interval of emerging new RINEX file</td>
     2374</tr>
     2375<tr class="row-odd"><td>reqcV2Priority</td>
     2376<td>Version 2 Signal Priority</td>
     2377</tr>
     2378<tr class="row-even"><td>reqcStartDateTime</td>
     2379<td>Begin of emerging new RINEX file</td>
     2380</tr>
     2381<tr class="row-odd"><td>reqcEndDateTime</td>
     2382<td>End of emerging new RINEX file</td>
     2383</tr>
     2384<tr class="row-even"><td>reqcRunBy</td>
     2385<td>Operator name</td>
     2386</tr>
     2387<tr class="row-odd"><td>reqcUseObsTypes</td>
     2388<td>GNSS systems and observation types</td>
     2389</tr>
     2390<tr class="row-even"><td>reqcComment</td>
     2391<td>Additional comment lines</td>
     2392</tr>
     2393<tr class="row-odd"><td>reqcOldMarkerName</td>
     2394<td>Old marker name</td>
     2395</tr>
     2396<tr class="row-even"><td>reqcNewMarkerName</td>
     2397<td>New marker name</td>
     2398</tr>
     2399<tr class="row-odd"><td>reqcOldAntennaName</td>
     2400<td>Old antenna name</td>
     2401</tr>
     2402<tr class="row-even"><td>reqcNewAntennaName</td>
     2403<td>New antenna name</td>
     2404</tr>
     2405<tr class="row-odd"><td>reqcOldAntennaNumber</td>
     2406<td>Old antenna number</td>
     2407</tr>
     2408<tr class="row-even"><td>reqcNewAntennaNumber</td>
     2409<td>New antenna number</td>
     2410</tr>
     2411<tr class="row-odd"><td>reqcOldAntennadN</td>
     2412<td>Old component of north eccentricity</td>
     2413</tr>
     2414<tr class="row-even"><td>reqcOldAntennadE</td>
     2415<td>Old component of east eccentricity</td>
     2416</tr>
     2417<tr class="row-odd"><td>reqcOldAntennadU</td>
     2418<td>Old component of up eccentricity</td>
     2419</tr>
     2420<tr class="row-even"><td>reqcNewAntennadN</td>
     2421<td>New component of north eccentricity</td>
     2422</tr>
     2423<tr class="row-odd"><td>reqcNewAntennadE</td>
     2424<td>New component of east eccentricity</td>
     2425</tr>
     2426<tr class="row-even"><td>reqcNewAntennadU</td>
     2427<td>New component of up eccentricity</td>
     2428</tr>
     2429<tr class="row-odd"><td>reqcOldReceiverName</td>
     2430<td>Old receiver name</td>
     2431</tr>
     2432<tr class="row-even"><td>reqcNewReceiverName</td>
     2433<td>New receiver name</td>
     2434</tr>
     2435<tr class="row-odd"><td>reqcOldReceiverNumber</td>
     2436<td>Old receiver number</td>
     2437</tr>
     2438<tr class="row-even"><td>reqcNewReceiverNumber</td>
     2439<td>New receiver number</td>
     2440</tr>
     2441</tbody>
    20652442</table>
    2066 
    2067 <p><h4>2.7 <a name="sp3comp">SP3 Comparison</h4></p>
    2068 <p>
    2069 BNC allows to compare the contents of two files with GNSS orbit and clock data in SP3 format. SP3 ASCII files basically contain a list of records over a certain period of time. Each record carries a time tag, the XYZ position of the satellite's Center of Mass at that time and the corresponding satellite clock value. Both SP3 files may contain some records for different epochs. If so, then BNC only compares records for identical epochs. BNC accepts that a specific GNSS system or a specific satellite is only available from one of the SP3 files. Note that BNC does not interpolate orbits when comparing SP3 files.
    2070 </p>
    2071 <p>
    2072 To compare satellite clocks provided by the two files, BNC first converts coordinate differences dX,dY,dZ into along track, out-of-plane, and radial components. It then corrects the clock differences for the radial components of coordinate differences. RMS values of clock differences are finally calculated after introducing at first one offset 'per epoch for all satellites' and secondly one offset 'per satellite for all epochs'.
    2073 </p>
    2074 
    2075 <p><h4>2.7.1 <a name="sp3input">Input SP3 Files - optional</h4></p>
    2076 <p>
    2077 Specify the full paths of two SP3 files, separate them by comma.
    2078 </p>
    2079 
    2080 <p><h4>2.7.2 <a name="sp3exclude">Exclude Satellites - optional</h4></p>
    2081 <p>
    2082 You may want to exclude one or more satellites in your SP3 files from the comparison. Or you may like to exclude all satellites of a specific GNSS system from the comparison. The following are example strings to be entered for excluding satellites from the comparison.
    2083 <ul>
     2443</div>
     2444</div>
     2445<div class="section" id="sp3-comparison">
     2446<h3>SP3 Comparison<a class="headerlink" href="#sp3-comparison" title="Permalink to this headline">¶</a></h3>
     2447<p>BNC allows to compare the contents of two files with GNSS orbit and clock data in SP3 format <a class="reference internal" href="#fig-16"><span class="std std-numref">(Fig. 17)</span></a>. SP3 ASCII files basically contain a list of records over a certain period of time. Each record carries a time tag, the XYZ position of the satellite&#8217;s Center of Mass at that time and the corresponding satellite clock value. Both SP3 files may contain some records for different epochs. If so, then BNC only compares records for identical epochs. BNC accepts that a specific GNSS system or a specific satellite is only available from one of the SP3 files. Note that BNC does not interpolate orbits when comparing SP3 files.</p>
     2448<div class="figure" id="id34">
     2449<span id="fig-16"></span><a class="reference internal image-reference" href="_images/fig_16.png"><img alt="_images/fig_16.png" src="_images/fig_16.png" style="width: 883.0px; height: 316.0px;" /></a>
     2450<p class="caption"><span class="caption-number">Fig. 17 </span><span class="caption-text">Example for comparing two SP3 files with satellite orbit and clock data using BNC</span></p>
     2451</div>
     2452<p>To compare satellite clocks provided by the two files, BNC first converts coordinate differences dX,dY,dZ into along track, out-of-plane, and radial components. It then corrects the clock differences for the radial components of coordinate differences. RMS values of clock differences are finally calculated after introducing at first one offset &#8216;per epoch for all satellites&#8217; and secondly one offset &#8216;per satellite for all epochs&#8217;.</p>
     2453<div class="section" id="input-sp3-files-optional">
     2454<h4>Input SP3 Files - optional<a class="headerlink" href="#input-sp3-files-optional" title="Permalink to this headline">¶</a></h4>
     2455<p>Specify the full paths of two SP3 files, separate them by comma.</p>
     2456</div>
     2457<div class="section" id="exclude-satellites-optional">
     2458<h4>Exclude Satellites - optional<a class="headerlink" href="#exclude-satellites-optional" title="Permalink to this headline">¶</a></h4>
     2459<p>You may want to exclude one or more satellites in your SP3 files from the comparison. Or you may like to exclude all satellites of a specific GNSS system from the comparison. The following are example strings to be entered for excluding satellites from the comparison:</p>
     2460<ul class="simple">
    20842461<li>G05,G31 (excluding GPS satellites with PRN 5 and 31)</li>
    20852462<li>G (excluding all GPS satellites)</li>
    … …  
    20882465<li>G04,G31,R (excluding GPS satellites with PRN 4 and 31 as well as all GLONASS satellites)</li>
    20892466</ul>
    2090 </p>
    2091 <p>
    2092 Default is an empty option field, meaning that no satellite will be excluded from the comparison.
    2093 </p>
    2094 
    2095 <p><h4>2.7.3 <a name="sp3log">Logfile - mandatory if 'Input SP3 Files' is set</h4></p>
    2096 <p>
    2097 Specify a logfile name to save results of the SP3 file comparison.
    2098 </p>
    2099 <p>
    2100 The following is an example for a SP3 Comparison logfile:
    2101 </p>
    2102 <pre>
    2103 
    2104 ! SP3 File 1: esr18283.sp3
    2105 ! SP3 File 2: rt218283.sp3
    2106 !
    2107 !  MJD       PRN  radial   along   out        clk    clkRed   iPRN
    2108 ! ----------------------------------------------------------------
    2109 57043.000000 G01 -0.0001 -0.0318 -0.0354     0.0266  0.0267     1
    2110 57043.000000 G02 -0.0062 -0.0198  0.0111     0.0082  0.0143     2
    2111 57043.000000 G03  0.0052  0.0060  0.0032     0.0386  0.0334     3
    2112 57043.000000 G04 -0.0049 -0.0193 -0.0071    -0.1696 -0.1648     4
    2113 57043.000000 G05  0.0027  0.0154  0.0275     0.0345  0.0318     5
    2114 57043.000000 G06  0.0247 -0.0398 -0.0111     0.0483  0.0236     6
    2115 57043.000000 G07 -0.0052  0.2854 -0.0975    -0.0940 -0.0888     7
    2116 57043.000000 G08 -0.0247  0.0937 -0.0184    -0.1563 -0.1316     8
    2117 57043.000000 G09  0.0152  0.0583  0.0086    -0.0144 -0.0296     9
    2118 ...
    2119 ...
    2120 ...
    2121 !
    2122 ! RMS[m]
    2123 !
    2124 !   PRN  radial   along   out     nOrb    clk   clkRed   nClk    Offset
    2125 ! ---------------------------------------------------------------------
    2126 !   G01  0.0151  0.0377  0.0196     96  0.0157  0.0154     96    0.0152
    2127 !   G02  0.0083  0.0278  0.0228     96  0.0097  0.0124     96   -0.0626
    2128 !   G03  0.0105  0.0311  0.0307     96  0.0352  0.0309     96    0.0898
    2129 !   G04  0.0113  0.0334  0.0154     94  0.0725  0.0707     94   -0.5087
    2130 !   G05  0.0103  0.0319  0.0299     96  0.0417  0.0403     96    0.1185
    2131 !   G06  0.0182  0.0509  0.0302     96  0.0218  0.0166     96    0.0040
    2132 !   G07  0.0337  0.1632  0.0463     96  0.0483  0.0435     96    0.3031
    2133 !   G08  0.0228  0.0741  0.0321     88  0.0616  0.0561     88   -0.2232
    2134 ...
    2135 ...
    2136 ...
    2137 !   R20  0.0637  0.2115  0.1131     96  0.1580  0.1345     96    0.7371
    2138 !   R21  0.0475  0.1657  0.0880     96  0.1123  0.0840     96   -0.4133
    2139 !   R22  0.0125  0.1249  0.0646     96  0.0414  0.0444     96   -0.7375
    2140 !   R23  0.0435  0.1503  0.0573     96  0.0987  0.1099     96    0.6620
    2141 !   R24  0.0278  0.2026  0.1186     96  0.1446  0.1303     96   -1.1470
    2142 !
    2143 ! Total  0.0262  0.0938  0.0492   5268  0.0620  0.0561   5268
    2144 </pre>
    2145 <p>
    2146 The first part of this output uses the following abbreviations:
    2147 </p>
    2148 
    2149 <table>
    2150 <tr><td>'MJD' &nbsp;</td><td>Modified Julian Date</td></tr>
    2151 <tr><td>'PRN' &nbsp;</td><td>Satellite specification</td></tr>
    2152 <tr><td>'radial' &nbsp;</td><td>Radial component of orbit coordinate difference [m]</td></tr>
    2153 <tr><td>'along' &nbsp;</td><td>Along track component of orbit coordinate difference [m]</td></tr>
    2154 <tr><td>'out' &nbsp;</td><td>Out-of-plane component of orbit coordinate difference [m]</td></tr>
    2155 <tr><td>'clk' &nbsp;</td><td>Clock difference [m]</td></tr>
    2156 <tr><td>'clkRed' &nbsp;</td><td>Clock difference reduced by radial component of orbit coordinate difference [m]</td></tr>
    2157 <tr><td>'iPRN' &nbsp;</td><td>BNC internal sequence number</td></tr>
     2467<p>Default is an empty option field, meaning that no satellite will be excluded from the comparison.</p>
     2468</div>
     2469<div class="section" id="logfile-mandatory-if-input-sp3-files-is-set">
     2470<h4>Logfile - mandatory if &#8216;Input SP3 Files&#8217; is set<a class="headerlink" href="#logfile-mandatory-if-input-sp3-files-is-set" title="Permalink to this headline">¶</a></h4>
     2471<p>Specify a logfile name to save results of the SP3 file comparison.</p>
     2472<p>The following is an example for a SP3 Comparison logfile:</p>
     2473<div class="highlight-console"><div class="highlight"><pre><span class="go">! SP3 File 1: esr18283.sp3</span>
     2474<span class="go">! SP3 File 2: rt218283.sp3</span>
     2475<span class="go">!</span>
     2476<span class="go">!  MJD       PRN  radial   along   out        clk    clkRed   iPRN</span>
     2477<span class="go">! ----------------------------------------------------------------</span>
     2478<span class="go">57043.000000 G01 -0.0001 -0.0318 -0.0354     0.0266  0.0267     1</span>
     2479<span class="go">57043.000000 G02 -0.0062 -0.0198  0.0111     0.0082  0.0143     2</span>
     2480<span class="go">57043.000000 G03  0.0052  0.0060  0.0032     0.0386  0.0334     3</span>
     2481<span class="go">57043.000000 G04 -0.0049 -0.0193 -0.0071    -0.1696 -0.1648     4</span>
     2482<span class="go">57043.000000 G05  0.0027  0.0154  0.0275     0.0345  0.0318     5</span>
     2483<span class="go">57043.000000 G06  0.0247 -0.0398 -0.0111     0.0483  0.0236     6</span>
     2484<span class="go">57043.000000 G07 -0.0052  0.2854 -0.0975    -0.0940 -0.0888     7</span>
     2485<span class="go">57043.000000 G08 -0.0247  0.0937 -0.0184    -0.1563 -0.1316     8</span>
     2486<span class="go">57043.000000 G09  0.0152  0.0583  0.0086    -0.0144 -0.0296     9</span>
     2487<span class="go">...</span>
     2488<span class="go">...</span>
     2489<span class="go">...</span>
     2490<span class="go">!</span>
     2491<span class="go">! RMS[m]</span>
     2492<span class="go">!</span>
     2493<span class="go">!   PRN  radial   along   out     nOrb    clk   clkRed   nClk    Offset</span>
     2494<span class="go">! ---------------------------------------------------------------------</span>
     2495<span class="go">!   G01  0.0151  0.0377  0.0196     96  0.0157  0.0154     96    0.0152</span>
     2496<span class="go">!   G02  0.0083  0.0278  0.0228     96  0.0097  0.0124     96   -0.0626</span>
     2497<span class="go">!   G03  0.0105  0.0311  0.0307     96  0.0352  0.0309     96    0.0898</span>
     2498<span class="go">!   G04  0.0113  0.0334  0.0154     94  0.0725  0.0707     94   -0.5087</span>
     2499<span class="go">!   G05  0.0103  0.0319  0.0299     96  0.0417  0.0403     96    0.1185</span>
     2500<span class="go">!   G06  0.0182  0.0509  0.0302     96  0.0218  0.0166     96    0.0040</span>
     2501<span class="go">!   G07  0.0337  0.1632  0.0463     96  0.0483  0.0435     96    0.3031</span>
     2502<span class="go">!   G08  0.0228  0.0741  0.0321     88  0.0616  0.0561     88   -0.2232</span>
     2503<span class="go">...</span>
     2504<span class="go">...</span>
     2505<span class="go">...</span>
     2506<span class="go">!   R20  0.0637  0.2115  0.1131     96  0.1580  0.1345     96    0.7371</span>
     2507<span class="go">!   R21  0.0475  0.1657  0.0880     96  0.1123  0.0840     96   -0.4133</span>
     2508<span class="go">!   R22  0.0125  0.1249  0.0646     96  0.0414  0.0444     96   -0.7375</span>
     2509<span class="go">!   R23  0.0435  0.1503  0.0573     96  0.0987  0.1099     96    0.6620</span>
     2510<span class="go">!   R24  0.0278  0.2026  0.1186     96  0.1446  0.1303     96   -1.1470</span>
     2511<span class="go">!</span>
     2512<span class="go">! Total  0.0262  0.0938  0.0492   5268  0.0620  0.0561   5268</span>
     2513</pre></div>
     2514</div>
     2515<p>The first part of this output uses the abbreviations in <a class="reference internal" href="#tab-log-abb-1"><span class="std std-numref">Table 4</span></a>.</p>
     2516<table border="1" class="docutils" id="id35">
     2517<span id="tab-log-abb-1"></span><caption><span class="caption-number">Table 4 </span><span class="caption-text">Abbreviations in first part of BNC log files when comparing SP3 files</span><a class="headerlink" href="#id35" title="Permalink to this table">¶</a></caption>
     2518<colgroup>
     2519<col width="17%" />
     2520<col width="83%" />
     2521</colgroup>
     2522<thead valign="bottom">
     2523<tr class="row-odd"><th class="head"><strong>Abbreviation</strong></th>
     2524<th class="head"><strong>Meaning</strong></th>
     2525</tr>
     2526</thead>
     2527<tbody valign="top">
     2528<tr class="row-even"><td>MJD</td>
     2529<td>Modified Julian Date</td>
     2530</tr>
     2531<tr class="row-odd"><td>PRN</td>
     2532<td>Satellite specification</td>
     2533</tr>
     2534<tr class="row-even"><td>radial</td>
     2535<td>Radial component of orbit coordinate difference [m]</td>
     2536</tr>
     2537<tr class="row-odd"><td>along</td>
     2538<td>Along track component of orbit coordinate difference [m]</td>
     2539</tr>
     2540<tr class="row-even"><td>out</td>
     2541<td>Out-of-plane component of orbit coordinate difference [m]</td>
     2542</tr>
     2543<tr class="row-odd"><td>clk</td>
     2544<td>Clock difference [m]</td>
     2545</tr>
     2546<tr class="row-even"><td>clkRed</td>
     2547<td>Clock difference reduced by radial component of orbit coordinate difference [m]</td>
     2548</tr>
     2549<tr class="row-odd"><td>iPRN</td>
     2550<td>BNC internal sequence number</td>
     2551</tr>
     2552</tbody>
    21582553</table>
    2159 <p>
    2160 The second part following string 'RMS' provides a summary of the comparison using the following
    2161 abbreviations:<br>
    2162 </p>
    2163 <table>
    2164 <tr><td>'PRN' &nbsp;</td><td>Satellite specification</td></tr>
    2165 <tr><td>'radial' &nbsp;</td><td>RMS of radial component of orbit coordinate differences [m]</td></tr>
    2166 <tr><td>'along' &nbsp;</td><td>RMS of along track component of orbit coordinate differences [m]</td></tr>
    2167 <tr><td>'out' &nbsp;</td><td>RMS of out-of-plane component of orbit coordinate differences [m]</td></tr>
    2168 <tr><td>'nOrb' &nbsp;</td><td>Number of epochs used in in orbit comparison</td></tr>
    2169 <tr><td>'clk' &nbsp;</td><td>RMS of clock differences [m]</td></tr>
    2170 <tr><td>'clkRed' &nbsp;</td><td>RMS of clock differences after reduction of radial orbit differences [m]</td></tr>
    2171 <tr><td>'nClk' &nbsp;</td><td>Number of epochs use in clock comparisons</td></tr>
    2172 <tr><td>'Offset' &nbsp;</td><td>Clock offset [m]</td></tr>
     2554<p>The second part following string &#8216;RMS&#8217; provides a summary of the comparison using the abbreviations in <a class="reference internal" href="#tab-log-abb-2"><span class="std std-numref">Table 5</span></a>.</p>
     2555<table border="1" class="docutils" id="id36">
     2556<span id="tab-log-abb-2"></span><caption><span class="caption-number">Table 5 </span><span class="caption-text">Abbreviations in second part of BNC log files when comparing SP3 files</span><a class="headerlink" href="#id36" title="Permalink to this table">¶</a></caption>
     2557<colgroup>
     2558<col width="17%" />
     2559<col width="83%" />
     2560</colgroup>
     2561<thead valign="bottom">
     2562<tr class="row-odd"><th class="head"><strong>Abbreviation</strong></th>
     2563<th class="head"><strong>Meaning</strong></th>
     2564</tr>
     2565</thead>
     2566<tbody valign="top">
     2567<tr class="row-even"><td>PRN</td>
     2568<td>Satellite specification</td>
     2569</tr>
     2570<tr class="row-odd"><td>radial</td>
     2571<td>RMS of radial component of orbit coordinate differences [m]</td>
     2572</tr>
     2573<tr class="row-even"><td>along</td>
     2574<td>RMS of along track component of orbit coordinate differences [m]</td>
     2575</tr>
     2576<tr class="row-odd"><td>out</td>
     2577<td>RMS of out-of-plane component of orbit coordinate differences [m]</td>
     2578</tr>
     2579<tr class="row-even"><td>nOrb</td>
     2580<td>Number of epochs used in in orbit comparison</td>
     2581</tr>
     2582<tr class="row-odd"><td>clk</td>
     2583<td>RMS of clock differences [m]</td>
     2584</tr>
     2585<tr class="row-even"><td>clkRed</td>
     2586<td>RMS of clock differences after reduction of radial orbit differences [m]</td>
     2587</tr>
     2588<tr class="row-odd"><td>nClk</td>
     2589<td>Number of epochs use in clock comparisons</td>
     2590</tr>
     2591<tr class="row-even"><td>Offset</td>
     2592<td>Clock offset [m]</td>
     2593</tr>
     2594</tbody>
    21732595</table>
    2174 
    2175 <br>
    2176 
    2177 <p><img src="IMG/screenshot36.png"/></p>
    2178 <p><u>Figure 16:</u> Example for comparing two SP3 files with satellite orbit and clock data using BNC</p>
    2179 
    2180 <p><h4>2.8 <a name="correct">Broadcast Corrections</h4></p>
    2181 <p>
    2182 Differential GNSS and RTK operation using RTCM streams is currently based on corrections and/or raw measurements from single or multiple reference stations. This approach to differential positioning uses 'observation space' information. The representation with the RTCM standard can be called 'Observation Space Representation' (OSR).
    2183 </p>
    2184 <p>
    2185 An alternative to the observation space approach is the so-called 'state space' approach. The principle here is to provide information on individual error sources. It can be called 'State Space Representation' (SSR). For a rover position, state space information concerning precise satellite clocks, orbits, ionosphere, troposphere et cetera can be converted into observation space and used to correct the rover observables for more accurate positioning. Alternatively, the state information can be used directly in the rover's processing or adjustment model.
    2186 </p>
    2187 <p>
    2188 RTCM is currently developing Version 3 messages to transport SSR corrections in real-time. They refer to satellite Antenna Phase Center (APC). SSR messages adopted or recently proposed concern:
    2189 
    2190 <ul>
    2191 <li>SSR, Step I:</li>
    2192 <ul>
     2596</div>
     2597</div>
     2598<div class="section" id="broadcast-corrections">
     2599<span id="index-19"></span><h3>Broadcast Corrections<a class="headerlink" href="#broadcast-corrections" title="Permalink to this headline">¶</a></h3>
     2600<p>Differential GNSS and RTK operation using RTCM streams is currently based on corrections and/or raw measurements from single or multiple reference stations. This approach to differential positioning uses &#8216;observation space&#8217; information. The representation with the RTCM standard can be called &#8216;Observation Space Representation&#8217; (OSR).</p>
     2601<p>An alternative to the observation space approach is the so-called &#8216;state space&#8217; approach. The principle here is to provide information on individual error sources. It can be called &#8216;State Space Representation&#8217; (SSR). For a rover position, state space information concerning precise satellite clocks, orbits, ionosphere, troposphere et cetera can be converted into observation space and used to correct the rover observables for more accurate positioning. Alternatively, the state information can be used directly in the rover&#8217;s processing or adjustment model.</p>
     2602<p>RTCM is currently developing Version 3 messages to transport SSR corrections in real-time. They refer to satellite Antenna Phase Center (APC). SSR messages adopted or recently proposed concern:</p>
     2603<p>SSR, Step I:</p>
     2604<ul class="simple">
    21932605<li>Orbit corrections to Broadcast Ephemeris</li>
    21942606<li>Clock corrections to Broadcast Ephemeris</li>
    … …  
    21992611<li>Code biases</li>
    22002612</ul>
    2201 <li>SSR, Step II:</li>
    2202 <ul>
     2613<p>SSR, Step II:</p>
     2614<ul class="simple">
    22032615<li>Phase biases</li>
    22042616<li>Vertical Total Electron Content (VTEC)</li>
    22052617</ul>
    2206 </ul>
    2207 
    2208 <p>
    2209 RTCM Version 3 streams carrying these messages may be used e.g. to support real-time Precise Point Positioning (PPP) applications.
    2210 </p>
    2211 <p>
    2212 When using clocks from Broadcast Ephemeris (with or without applied corrections) or clocks from SP3 files, it may be important to understand that they are not corrected for the conventional periodic relativistic effect. Chapter 10 of the IERS Conventions 2003 mentions that the conventional periodic relativistic correction to the satellite clock (to be added to the broadcast clock) is computed as
    2213 </p>
    2214 
    2215 <pre>
    2216  &nbsp; &nbsp; dt =  -2 (R * V) / c<sup>2</sup>
    2217 </pre>
    2218 
    2219 <p>
    2220 where R * V is the scalar product of the satellite position and velocity and c is the speed of light. This can also be found in the GPS Interface Specification, IS-GPS-200, Revision D, 7 March 2006.
    2221 </p>
    2222 
    2223 <p>
    2224 Orbit corrections are provided in along-track, out-of-plane and radial components. These components are defined in the Earth-Centered, Earth-Fixed reference frame of the Broadcast Ephemeris. For an observer in this frame, the along-track component is aligned in both direction and sign with the velocity vector, the out-of-plane component is perpendicular to the plane defined by the satellite position and velocity vectors, and the radial direction is perpendicular to the along track and out-of-plane ones. The three components form a right-handed orthogonal system.
    2225 </p>
    2226 
    2227 <p>
    2228 After applying corrections, the satellite position and clock is referred to the 'ionospheric free' phase center of the antenna which is compatible with the broadcast orbit reference.
    2229 </p>
    2230 
    2231 <p>
    2232 The orbit and clock corrections do not include local effects like Ocean Loading, Solid Earth Tides or tropospheric delays. However, accurate single frequency applications can be corrected for global ionospheric effects using so-call VTEC messages for global ionospheric state parameters.
    2233 </p>
    2234 
    2235 <p>
    2236 While we have a plain ASCII standard for saving Broadcast Ephemeris in RINEX Navigation files, we do not have an equivalent standard for corrections to Broadcast Ephemeris. Hence, BNC saves Broadcast Correction files following its own format definition. The filename convention for Broadcast Correction files follows the convention for RINEX Version 2 files except for the last character of the filename suffix which is set to 'C'.
    2237 </p>
    2238 
    2239 <p>
    2240 BNC's Broadcast Correction files contain blocks of records in plain ASCII format. Each block covers information about one specific topic and starts with an 'Epoch Record'.
    2241 </p>
    2242 <p>
    2243 <b>The 'Epoch Record' of a Broadcast Correction block</b>
    2244 </p>
    2245 
    2246 <p>
    2247 The leading 'Epoch Record' of each block in a Broadcast Correction file contains 11 parameters. Example:
    2248 </p>
    2249 <pre>
    2250 > ORBIT 2015 06 17 11 43 35.0 2 53 CLK93
    2251 </pre>
    2252 <p>
    2253 Their meaning is as follows:
    2254 </p>
    2255 <ol type="1">
    2256 <li>Special character '&#62;' is the first character in each 'Epoch Record' (as we have it in RINEX Version 3)</li>
    2257 <li>SSR message or topic descriptor, valid descriptors are:<br>ORBIT, CLOCK, CODE_BIAS, PHASE_BIAS, or VTEC</li>
     2618<p>RTCM Version 3 streams carrying these messages may be used e.g. to support real-time Precise Point Positioning (PPP) applications.</p>
     2619<p>When using clocks from Broadcast Ephemeris (with or without applied corrections) or clocks from SP3 files, it may be important to understand that they are not corrected for the conventional periodic relativistic effect. Chapter 10 of the IERS Conventions 2003 mentions that the conventional periodic relativistic correction to the satellite clock (to be added to the broadcast clock) is computed as</p>
     2620<div class="math">
     2621\[dt =  -2 (R * V) / c^2\]</div>
     2622<p>where <span class="math">\(R*V\)</span> is the scalar product of the satellite position and velocity and <span class="math">\(c\)</span> is the speed of light. This can also be found in the GPS Interface Specification, IS-GPS-200, Revision D, 7 March 2006.</p>
     2623<p>Orbit corrections are provided in along-track, out-of-plane and radial components. These components are defined in the Earth-Centered, Earth-Fixed reference frame of the Broadcast Ephemeris. For an observer in this frame, the along-track component is aligned in both direction and sign with the velocity vector, the out-of-plane component is perpendicular to the plane defined by the satellite position and velocity vectors, and the radial direction is perpendicular to the along track and out-of-plane ones. The three components form a right-handed orthogonal system.</p>
     2624<p>After applying corrections, the satellite position and clock is referred to the &#8216;ionospheric free&#8217; phase center of the antenna which is compatible with the broadcast orbit reference.</p>
     2625<p>The orbit and clock corrections do not include local effects like Ocean Loading, Solid Earth Tides or tropospheric delays. However, accurate single frequency applications can be corrected for global ionospheric effects using so-call VTEC messages for global ionospheric state parameters.</p>
     2626<p>While we have a plain ASCII standard for saving Broadcast Ephemeris in RINEX Navigation files, we do not have an equivalent standard for corrections to Broadcast Ephemeris. Hence, BNC saves Broadcast Correction files following its own format definition. The filename convention for Broadcast Correction files follows the convention for RINEX Version 2 files except for the last character of the filename suffix which is set to &#8216;C&#8217;.</p>
     2627<div class="section" id="broadcast-correction-file-format">
     2628<h4>Broadcast Correction file format<a class="headerlink" href="#broadcast-correction-file-format" title="Permalink to this headline">¶</a></h4>
     2629<p>BNC&#8217;s Broadcast Correction files contain blocks of records in plain ASCII format. Each block covers information about one specific topic and starts with an &#8216;Epoch Record&#8217;. The leading &#8216;Epoch Record&#8217; of each block in a Broadcast Correction file contains 11 parameters. Example:</p>
     2630<div class="highlight-console"><div class="highlight"><pre><span class="gp">&gt;</span> ORBIT <span class="m">2015</span> <span class="m">06</span> <span class="m">17</span> <span class="m">11</span> <span class="m">43</span> 35.0 <span class="m">2</span> <span class="m">53</span> CLK93
     2631</pre></div>
     2632</div>
     2633<p>Their meaning is as follows:</p>
     2634<ol class="arabic simple">
     2635<li>Special character &#8216;&gt;&#8217; is the first character in each &#8216;Epoch Record&#8217; (as we have it in RINEX Version 3)</li>
     2636<li>SSR message or topic descriptor, valid descriptors are: ORBIT, CLOCK, CODE_BIAS, PHASE_BIAS, and VTEC</li>
    22582637<li>Year, GPS time</li>
    22592638<li>Month, GPS time</li>
    … …  
    22622641<li>Minute, GPS time</li>
    22632642<li>Second, GPS time</li>
    2264 <li>SSR message update interval indicator</li>
    2265 <ul>
     2643<li>SSR message update interval indicator:</li>
     2644</ol>
     2645<blockquote>
     2646<div><ul class="simple">
    22662647<li>0 = 1 sec</li>
    22672648<li>1 = 2 sec</li>
    … …  
    22812662<li>15 = 10800 sec</li>
    22822663</ul>
     2664</div></blockquote>
     2665<ol class="arabic simple" start="10">
    22832666<li>Number of following records in this block</li>
    22842667<li>Mountpoint, source/stream indicator</li>
    22852668</ol>
    2286 Each of the following 'satellite records' in such a block carries information for one specific satellite. Undefined parameters in the 'satellite records' could be set to zero &quot;0.000&quot;.
    2287 
    2288 <p>
    2289 <b>Example for block 'ORBIT' carrying orbit corrections</b>
    2290 </p>
    2291 <pre>
    2292 > ORBIT 2015 06 17 11 43 35.0 2 53 CLK93
    2293 G01   9     0.5134     0.3692     0.6784        0.0000    -0.0000    -0.0000
    2294 G02  25    57.6817   139.0492   -91.3456        0.5436    -0.6931     1.0173
    2295 G03  79   -32.1768   191.8368  -121.6540        0.2695     0.2296     0.4879
    2296 ...
    2297 G32  82     1.8174     1.1704     0.2200       -0.0002    -0.0000    -0.0001
    2298 R01  59     0.7819    -0.6968     0.7388       -0.0001     0.0004     0.0004
    2299 R02  59     0.5816    -0.5800    -0.2004        0.0001    -0.0006     0.0001
    2300 R03  59     0.4635    -0.9104    -0.3832        0.0001     0.0001     0.0005
    2301 ...
    2302 R24  59     0.5935     2.0732    -0.6884       -0.0000     0.0004     0.0003
    2303 </pre>
    2304 <p>
    2305 Records in this block provide the following satellite specific information:
    2306 <ul>
     2669<p>Each of the following &#8216;satellite records&#8217; in such a block carries information for one specific satellite. Undefined parameters in the &#8216;satellite records&#8217; could be set to zero &#8216;0.000&#8217;.</p>
     2670<div class="section" id="example-for-block-orbit-carrying-orbit-corrections">
     2671<h5>Example for block &#8216;ORBIT&#8217; carrying orbit corrections<a class="headerlink" href="#example-for-block-orbit-carrying-orbit-corrections" title="Permalink to this headline">¶</a></h5>
     2672<div class="highlight-console"><div class="highlight"><pre><span class="gp">&gt;</span> ORBIT <span class="m">2015</span> <span class="m">06</span> <span class="m">17</span> <span class="m">11</span> <span class="m">43</span> 35.0 <span class="m">2</span> <span class="m">53</span> CLK93
     2673<span class="go">G01   9     0.5134     0.3692     0.6784        0.0000    -0.0000    -0.0000</span>
     2674<span class="go">G02  25    57.6817   139.0492   -91.3456        0.5436    -0.6931     1.0173</span>
     2675<span class="go">G03  79   -32.1768   191.8368  -121.6540        0.2695     0.2296     0.4879</span>
     2676<span class="go">...</span>
     2677<span class="go">G32  82     1.8174     1.1704     0.2200       -0.0002    -0.0000    -0.0001</span>
     2678<span class="go">R01  59     0.7819    -0.6968     0.7388       -0.0001     0.0004     0.0004</span>
     2679<span class="go">R02  59     0.5816    -0.5800    -0.2004        0.0001    -0.0006     0.0001</span>
     2680<span class="go">R03  59     0.4635    -0.9104    -0.3832        0.0001     0.0001     0.0005</span>
     2681<span class="go">...</span>
     2682<span class="go">R24  59     0.5935     2.0732    -0.6884       -0.0000     0.0004     0.0003</span>
     2683</pre></div>
     2684</div>
     2685<p>Records in this block provide the following satellite specific information:</p>
     2686<ul class="simple">
    23072687<li>GNSS Indicator and Satellite Vehicle Pseudo Random Number</li>
    23082688<li>IOD referring to Broadcast Ephemeris set</li>
    … …  
    23142694<li>Velocity of Out-of-plane Component of Orbit Correction to Broadcast Ephemeris [m/s]</li>
    23152695</ul>
    2316 </p>
    2317 
    2318 <p>
    2319 <b>Example for block 'CLOCK' carrying clock corrections</b>
    2320 </p>
    2321 
    2322 <p>
    2323 <pre>
    2324 > CLOCK 2015 06 17 11 43 35.0 2 53 CLK93
    2325 G01   9     0.5412     0.0000     0.0000
    2326 G02  25    11.1811     0.0000     0.0000
    2327 G03  79    45.0228     0.0000     0.0000
    2328 ...
    2329 G32  82    -1.5324     0.0000     0.0000
    2330 R01  59     4.2194     0.0000     0.0000
    2331 R02  59     2.0535     0.0000     0.0000
    2332 R03  59     1.8130     0.0000     0.0000
    2333 ...
    2334 R24  59     2.7409     0.0000     0.0000
    2335 </pre>
    2336 <p>
    2337 Records in this block provide the following satellite specific information:
    2338 <ul>
     2696</div>
     2697<div class="section" id="example-for-block-clock-carrying-clock-corrections">
     2698<h5>Example for block &#8216;CLOCK&#8217; carrying clock corrections<a class="headerlink" href="#example-for-block-clock-carrying-clock-corrections" title="Permalink to this headline">¶</a></h5>
     2699<div class="highlight-console"><div class="highlight"><pre><span class="gp">&gt;</span> CLOCK <span class="m">2015</span> <span class="m">06</span> <span class="m">17</span> <span class="m">11</span> <span class="m">43</span> 35.0 <span class="m">2</span> <span class="m">53</span> CLK93
     2700<span class="go">G01   9     0.5412     0.0000     0.0000</span>
     2701<span class="go">G02  25    11.1811     0.0000     0.0000</span>
     2702<span class="go">G03  79    45.0228     0.0000     0.0000</span>
     2703<span class="go">...</span>
     2704<span class="go">G32  82    -1.5324     0.0000     0.0000</span>
     2705<span class="go">R01  59     4.2194     0.0000     0.0000</span>
     2706<span class="go">R02  59     2.0535     0.0000     0.0000</span>
     2707<span class="go">R03  59     1.8130     0.0000     0.0000</span>
     2708<span class="go">...</span>
     2709<span class="go">R24  59     2.7409     0.0000     0.0000</span>
     2710</pre></div>
     2711</div>
     2712<p>Records in this block provide the following satellite specific information:</p>
     2713<ul class="simple">
    23392714<li>GNSS Indicator and Satellite Vehicle Pseudo Random Number</li>
    23402715<li>IOD referring to Broadcast Ephemeris set</li>
    … …  
    23432718<li>C2 polynomial coefficient for Clock Correction to Broadcast Ephemeris [m/s**2]</li>
    23442719</ul>
    2345 </p>
    2346 
    2347 <p>
    2348 <b>Example for block 'CODE_BIAS' carrying code biases</b>
    2349 </p>
    2350 <pre>
    2351 > CODE_BIAS 2015 06 17 11 43 35.0 2 53 CLK93
    2352 G01    5   1C    -3.3100   1W    -3.7500   2W    -6.1900   2X    -5.7800   5I    -5.4200
    2353 G02    5   1C     3.6000   1W     3.9300   2W     6.4800   2X     0.0000   5I     0.0000
    2354 G03    5   1C    -2.1600   1W    -2.6500   2W    -4.3600   2X    -4.4800   5I    -5.3400
    2355 ...
    2356 G32    5   1C    -1.5800   1W    -1.1000   2W    -1.8200   2X     0.0000   5I     0.0000
    2357 R01    4   1C    -2.4900   1P    -2.4900   2C    -3.1500   2P    -4.1200
    2358 R02    4   1C     0.3900   1P     0.2100   2C     0.4000   2P     0.3400
    2359 R03    4   1C     2.4800   1P     2.2800   2C     3.7800   2P     3.7700
    2360 ...
    2361 R24    4   1C     2.7000   1P     2.7800   2C     3.9800   2P     4.6000
    2362 </pre>
    2363 <p>
    2364 Records in this block provide the following satellite specific information:
    2365 <ul>
     2720</div>
     2721<div class="section" id="example-for-block-code-bias-carrying-code-biases">
     2722<h5>Example for block &#8216;CODE_BIAS&#8217; carrying code biases<a class="headerlink" href="#example-for-block-code-bias-carrying-code-biases" title="Permalink to this headline">¶</a></h5>
     2723<div class="highlight-console"><div class="highlight"><pre><span class="gp">&gt;</span> CODE_BIAS <span class="m">2015</span> <span class="m">06</span> <span class="m">17</span> <span class="m">11</span> <span class="m">43</span> 35.0 <span class="m">2</span> <span class="m">53</span> CLK93
     2724<span class="go">G01    5   1C    -3.3100   1W    -3.7500   2W    -6.1900   2X    -5.7800   5I    -5.4200</span>
     2725<span class="go">G02    5   1C     3.6000   1W     3.9300   2W     6.4800   2X     0.0000   5I     0.0000</span>
     2726<span class="go">G03    5   1C    -2.1600   1W    -2.6500   2W    -4.3600   2X    -4.4800   5I    -5.3400</span>
     2727<span class="go">...</span>
     2728<span class="go">G32    5   1C    -1.5800   1W    -1.1000   2W    -1.8200   2X     0.0000   5I     0.0000</span>
     2729<span class="go">R01    4   1C    -2.4900   1P    -2.4900   2C    -3.1500   2P    -4.1200</span>
     2730<span class="go">R02    4   1C     0.3900   1P     0.2100   2C     0.4000   2P     0.3400</span>
     2731<span class="go">R03    4   1C     2.4800   1P     2.2800   2C     3.7800   2P     3.7700</span>
     2732<span class="go">...</span>
     2733<span class="go">R24    4   1C     2.7000   1P     2.7800   2C     3.9800   2P     4.6000</span>
     2734</pre></div>
     2735</div>
     2736<p>Records in this block provide the following satellite specific information:</p>
     2737<ul class="simple">
    23662738<li>GNSS Indicator and Satellite Vehicle Pseudo Random Number</li>
    2367 <li>Number of Code Biases, succeeded by code specific information:</li>
    2368 <ul>
     2739<li>Number of Code Biases, succeeded by code specific information:<ul>
    23692740<li>Indicator to specify the signal and tracking mode</li>
    23702741<li>Code Bias [m]</li>
    … …  
    23732744<li>etc.</li>
    23742745</ul>
    2375 </ul>
    2376 </p>
    2377 
    2378 <p>
    2379 <b>Example for block 'PHASE_BIAS' carrying phase biases</b>
    2380 </p>
    2381 <pre>
    2382 > PHASE_BIAS 2015 06 17 11 43 35.0 2 31 CLK93
    2383  0   1
    2384 G01 245.39062500   0.00000000    3   1C     3.9518   1   2   6   2W     6.3177   1   2   6   5I     6.8059   1   2   6
    2385 G02 250.31250000   0.00000000    3   1C    -4.0900   1   2   5   2W    -6.7044   1   2   5   5I     0.0000   1   2   5
    2386 G03 281.95312500   0.00000000    3   1C     2.9327   1   2   4   2W     4.6382   1   2   4   5I     5.4120   1   2   4
    2387 ...
    2388 G32 290.39062500   0.00000000    3   1C     1.2520   1   2   5   2W     2.0554   1   2   5   5I     0.0000   1   2   5
    2389 </pre>
    2390 <p>
    2391 The second record in this block provides the following consistency information:
    2392 <ul>
    2393 
    2394 <li>Dispersive bias consistency indicatory<br>
    2395 0 &minus; phase biases valid for non-dispersive signal only<br>
    2396 1 &minus; phase biases maintain consistency between non-dispersive and all original dispersive phase signals
    23972746</li>
    2398 
    2399 <li>MW consistency indicator<br>
    2400 0 &minus; code and phase biases are independently derived<br>
    2401 1 &minus; consistency between code and phase biases is maintained for the MW combinations
    2402 </li>
    2403 
    2404 </ul>
    2405 Following records provide satellite specific information:
    2406 <ul>
     2747</ul>
     2748</div>
     2749<div class="section" id="example-for-block-phase-bias-carrying-phase-biases">
     2750<h5>Example for block &#8216;PHASE_BIAS&#8217; carrying phase biases<a class="headerlink" href="#example-for-block-phase-bias-carrying-phase-biases" title="Permalink to this headline">¶</a></h5>
     2751<div class="highlight-console"><div class="highlight"><pre><span class="gp">&gt;</span> PHASE_BIAS <span class="m">2015</span> <span class="m">06</span> <span class="m">17</span> <span class="m">11</span> <span class="m">43</span> 35.0 <span class="m">2</span> <span class="m">31</span> CLK93
     2752<span class="go"> 0   1</span>
     2753<span class="go">G01 245.39062500   0.00000000    3   1C     3.9518   1   2   6   2W     6.3177   1   2   6   5I     6.8059   1   2   6</span>
     2754<span class="go">G02 250.31250000   0.00000000    3   1C    -4.0900   1   2   5   2W    -6.7044   1   2   5   5I     0.0000   1   2   5</span>
     2755<span class="go">G03 281.95312500   0.00000000    3   1C     2.9327   1   2   4   2W     4.6382   1   2   4   5I     5.4120   1   2   4</span>
     2756<span class="go">...</span>
     2757<span class="go">G32 290.39062500   0.00000000    3   1C     1.2520   1   2   5   2W     2.0554   1   2   5   5I     0.0000   1   2   5</span>
     2758</pre></div>
     2759</div>
     2760<p>The second record in this block provides the following consistency information:</p>
     2761<ul class="simple">
     2762<li>Dispersive bias consistency indicatory</li>
     2763</ul>
     2764<blockquote>
     2765<div><p>0 − phase biases valid for non-dispersive signal only</p>
     2766<p>1 − phase biases maintain consistency between non-dispersive and all original dispersive phase signals</p>
     2767</div></blockquote>
     2768<ul class="simple">
     2769<li>MW consistency indicator</li>
     2770</ul>
     2771<blockquote>
     2772<div><p>0 − code and phase biases are independently derived</p>
     2773<p>1 − consistency between code and phase biases is maintained for the MW combinations</p>
     2774</div></blockquote>
     2775<p>Following records provide satellite specific information:</p>
     2776<ul class="simple">
    24072777<li>GNSS Indicator and Satellite Vehicle Pseudo Random Number</li>
    2408 <li>Yaw angle [&deg;], restricted to [0&deg... 360&deg]</li>
    2409 <li>Yaw rate [&deg;/s]</li>
    2410 <li>Number of phase biases in this record, succeeded by phase specific information:</li>
    2411 <ul>
     2778<li>Yaw angle [<span class="math">\(^{\circ}\)</span>], restricted to [<span class="math">\(0^{\circ}...360^{\circ}\)</span>]</li>
     2779<li>Yaw rate [<span class="math">\(^{\circ}/s\)</span>]</li>
     2780<li>Number of phase biases in this record, succeeded by phase specific information:<ul>
    24122781<li>Signal and tracking mode indicator</li>
    24132782<li>Phase bias [m]</li>
    … …  
    24162785<li>Signal discontinuity counter</li>
    24172786</ul>
    2418 </ul>
    2419 </p>
    2420 
    2421 <p>
    2422 <b>Example for block 'VTEC' carrying ionospheric corrections</b>
    2423 </p>
    2424 <pre>
    2425 > VTEC 2015 06 17 11 43 35.0 6 1 CLK93
    2426  1  6  6   450000.0
    2427    17.6800     0.0000     0.0000     0.0000     0.0000     0.0000     0.0000
    2428     4.5200     8.8700     0.0000     0.0000     0.0000     0.0000     0.0000
    2429    -4.6850    -0.3050     1.1700     0.0000     0.0000     0.0000     0.0000
    2430    -2.2250    -1.3900    -1.0250    -0.1300     0.0000     0.0000     0.0000
    2431     0.8750    -0.3800     0.2700    -0.1300     0.0400     0.0000     0.0000
    2432     1.2150     0.9050    -1.0100     0.3700    -0.1450    -0.2450     0.0000
    2433    -0.8200     0.4850     0.2300    -0.1750     0.3400    -0.0900    -0.0400
    2434     0.0000     0.0000     0.0000     0.0000     0.0000     0.0000     0.0000
    2435     0.0000    -0.0700     0.0000     0.0000     0.0000     0.0000     0.0000
    2436     0.0000     0.5800    -1.4150     0.0000     0.0000     0.0000     0.0000
    2437     0.0000    -0.6200    -0.1500     0.2600     0.0000     0.0000     0.0000
    2438     0.0000     0.0700    -0.0900    -0.0550     0.1700     0.0000     0.0000
    2439     0.0000     0.5000     0.3050    -0.5700    -0.5250    -0.2750     0.0000
    2440     0.0000     0.0850    -0.4700     0.0600     0.0700     0.1600     0.0400
    2441 </pre>
    2442 <p>
    2443 The second record in this block provides four parameters:
    2444 <ul>
     2787</li>
     2788</ul>
     2789</div>
     2790<div class="section" id="example-for-block-vtec-carrying-ionospheric-corrections">
     2791<h5>Example for block &#8216;VTEC&#8217; carrying ionospheric corrections<a class="headerlink" href="#example-for-block-vtec-carrying-ionospheric-corrections" title="Permalink to this headline">¶</a></h5>
     2792<div class="highlight-console"><div class="highlight"><pre><span class="gp">&gt;</span> VTEC <span class="m">2015</span> <span class="m">06</span> <span class="m">17</span> <span class="m">11</span> <span class="m">43</span> 35.0 <span class="m">6</span> <span class="m">1</span> CLK93
     2793<span class="go"> 1  6  6   450000.0</span>
     2794<span class="go">   17.6800     0.0000     0.0000     0.0000     0.0000     0.0000     0.0000</span>
     2795<span class="go">    4.5200     8.8700     0.0000     0.0000     0.0000     0.0000     0.0000</span>
     2796<span class="go">   -4.6850    -0.3050     1.1700     0.0000     0.0000     0.0000     0.0000</span>
     2797<span class="go">   -2.2250    -1.3900    -1.0250    -0.1300     0.0000     0.0000     0.0000</span>
     2798<span class="go">    0.8750    -0.3800     0.2700    -0.1300     0.0400     0.0000     0.0000</span>
     2799<span class="go">    1.2150     0.9050    -1.0100     0.3700    -0.1450    -0.2450     0.0000</span>
     2800<span class="go">   -0.8200     0.4850     0.2300    -0.1750     0.3400    -0.0900    -0.0400</span>
     2801<span class="go">    0.0000     0.0000     0.0000     0.0000     0.0000     0.0000     0.0000</span>
     2802<span class="go">    0.0000    -0.0700     0.0000     0.0000     0.0000     0.0000     0.0000</span>
     2803<span class="go">    0.0000     0.5800    -1.4150     0.0000     0.0000     0.0000     0.0000</span>
     2804<span class="go">    0.0000    -0.6200    -0.1500     0.2600     0.0000     0.0000     0.0000</span>
     2805<span class="go">    0.0000     0.0700    -0.0900    -0.0550     0.1700     0.0000     0.0000</span>
     2806<span class="go">    0.0000     0.5000     0.3050    -0.5700    -0.5250    -0.2750     0.0000</span>
     2807<span class="go">    0.0000     0.0850    -0.4700     0.0600     0.0700     0.1600     0.0400</span>
     2808</pre></div>
     2809</div>
     2810<p>The second record in this block provides four parameters:</p>
     2811<ul class="simple">
    24452812<li>Layer number</li>
    24462813<li>Maximum degree of spherical harmonics</li>
    … …  
    24482815<li>Height of ionospheric layer [m]</li>
    24492816</ul>
    2450 Subsequent records in this block provide the following information:
    2451 <ul>
     2817<p>Subsequent records in this block provide the following information:</p>
     2818<ul class="simple">
    24522819<li>Spherical harmonic coefficients C and S, sorted by degree and order (0 to maximum)</li>
    24532820</ul>
    2454 </p>
     2821</div>
     2822</div>
     2823<div class="section" id="directory-ascii-optional">
     2824<h4>Directory, ASCII - optional<a class="headerlink" href="#directory-ascii-optional" title="Permalink to this headline">¶</a></h4>
     2825<p>Specify a directory for saving Broadcast Corrections in files. If the specified directory does not exist, BNC will not create Broadcast Correction files. Default value for Broadcast Correction &#8216;Directory&#8217; is an empty option field, meaning that no Broadcast Correction files will be created.</p>
     2826</div>
     2827<div class="section" id="interval-mandatory-if-directory-ascii-is-set">
     2828<h4>Interval - mandatory if &#8216;Directory, ASCII&#8217; is set<a class="headerlink" href="#interval-mandatory-if-directory-ascii-is-set" title="Permalink to this headline">¶</a></h4>
     2829<p>Select the length of the Broadcast Correction files. The default value is &#8216;1 day&#8217;.</p>
     2830</div>
     2831<div class="section" id="id5">
     2832<h4>Port - optional<a class="headerlink" href="#id5" title="Permalink to this headline">¶</a></h4>
     2833<p>BNC can output epoch by epoch synchronized Broadcast Corrections in ASCII format on your local host (IP 127.0.0.1) through an IP &#8216;Port&#8217;. Specify an IP port number to activate this function. The default is an empty option field, meaning that no Broadcast Correction output via IP port is generated.</p>
     2834<p>The output format is similar to the format used for saving Broadcast Corrections in a file.</p>
     2835<p>The following is an example output for the stream from mountpoint CLK93:</p>
     2836<div class="highlight-console"><div class="highlight"><pre><span class="gp">&gt;</span> ORBIT <span class="m">2015</span> <span class="m">06</span> <span class="m">19</span> <span class="m">16</span> <span class="m">41</span> 00.0 <span class="m">2</span> <span class="m">53</span> CLK93
     2837<span class="go">G01  85     0.5891    -0.5124    -0.0216       -0.0001    -0.0002     0.0000</span>
     2838<span class="go">G02  25  -150.1820    11.4676    84.5216        0.4130    -0.6932     1.0159</span>
     2839<span class="go">G03  79    15.1999   141.9932  -156.4244        0.6782    -0.8607    -0.8211</span>
     2840<span class="go">...</span>
     2841<span class="go">G32  39     1.8454     0.4888    -0.3876       -0.0001    -0.0001     0.0001</span>
     2842<span class="go">R01  79    -0.0506     1.9024    -0.0120        0.0004     0.0002    -0.0000</span>
     2843<span class="go">R02  79     0.1623     0.9012     0.3984        0.0001     0.0001     0.0002</span>
     2844<span class="go">R03  79     0.3247    -2.6704    -0.0240        0.0005    -0.0002     0.0002</span>
     2845<span class="go">...</span>
     2846<span class="go">R24  79     0.7046    -0.5088    -0.0160       -0.0000     0.0000    -0.0002</span>
     2847<span class="gp">&gt;</span> CLOCK <span class="m">2015</span> <span class="m">06</span> <span class="m">19</span> <span class="m">16</span> <span class="m">41</span> 00.0 <span class="m">2</span> <span class="m">53</span> CLK93
     2848<span class="go">G01  85  -116.9441     0.0000     0.0000</span>
     2849<span class="go">G02  25  -110.4472     0.0000     0.0000</span>
     2850<span class="go">G03  79   -96.8299     0.0000     0.0000</span>
     2851<span class="go">...</span>
     2852<span class="go">G32  39  -119.2757     0.0000     0.0000</span>
     2853<span class="go">R01  79     1.5703     0.0000     0.0000</span>
     2854<span class="go">R02  79    -1.4181     0.0000     0.0000</span>
     2855<span class="go">R03  79     0.2072     0.0000     0.0000</span>
     2856<span class="go">...</span>
     2857<span class="go">R24  79     1.1292     0.0000     0.0000</span>
     2858<span class="gp">&gt;</span> CODE_BIAS <span class="m">2015</span> <span class="m">06</span> <span class="m">19</span> <span class="m">16</span> <span class="m">41</span> 00.0 <span class="m">0</span> <span class="m">56</span> CLK93
     2859<span class="go">E11    3   1B     1.3800   5Q     2.4800   7Q     2.5000</span>
     2860<span class="go">E12    3   1B     0.3900   5Q     0.6900   7Q     0.5300</span>
     2861<span class="go">E19    3   1B    -1.7800   5Q    -3.1900   7Q    -3.0700</span>
     2862<span class="go">G01    5   1C    -3.3100   1W    -3.7500   2W    -6.1900   2X    -5.7800   5I    -5.4200</span>
     2863<span class="go">G02    5   1C     3.6000   1W     3.9300   2W     6.4800   2X     0.0000   5I     0.0000</span>
     2864<span class="go">G03    5   1C    -2.1600   1W    -2.6500   2W    -4.3600   2X    -4.4800   5I    -5.3400</span>
     2865<span class="go">...</span>
     2866<span class="go">G32    5   1C    -1.5800   1W    -1.1000   2W    -1.8200   2X     0.0000   5I     0.0000</span>
     2867<span class="go">R01    4   1C    -2.4900   1P    -2.4900   2C    -3.1500   2P    -4.1200</span>
     2868<span class="go">R02    4   1C     0.3900   1P     0.2100   2C     0.4000   2P     0.3400</span>
     2869<span class="go">R03    4   1C     2.4800   1P     2.2800   2C     3.7800   2P     3.7700</span>
     2870<span class="go">...</span>
     2871<span class="go">R24    4   1C     2.7000   1P     2.7800   2C     3.9800   2P     4.6000</span>
     2872<span class="gp">&gt;</span> PHASE_BIAS <span class="m">2015</span> <span class="m">06</span> <span class="m">19</span> <span class="m">16</span> <span class="m">41</span> 00.0 <span class="m">2</span> <span class="m">31</span> CLK93
     2873<span class="go"> 0   1</span>
     2874<span class="go">G01 309.37500000   0.00000000    3   1C     3.9922   1   2   6   2W     6.3568   1   2   6   5I     6.8726   1   2   6</span>
     2875<span class="go">G02 263.67187500   0.00000000    3   1C    -4.0317   1   2   7   2W    -6.6295   1   2   7   5I     0.0000   1   2   7</span>
     2876<span class="go">G03 267.89062500   0.00000000    3   1C     3.1267   1   2   4   2W     4.9126   1   2   4   5I     5.6478   1   2   4</span>
     2877<span class="go">...</span>
     2878<span class="go">G32 255.93750000   0.00000000    3   1C     1.3194   1   2   5   2W     2.1448   1   2   5   5I     0.0000   1   2   5</span>
     2879<span class="gp">&gt;</span> VTEC <span class="m">2015</span> <span class="m">06</span> <span class="m">19</span> <span class="m">16</span> <span class="m">41</span> 00.0 <span class="m">6</span> <span class="m">1</span> CLK93
     2880<span class="go"> 1  6  6   450000.0</span>
     2881<span class="go">   16.7450     0.0000     0.0000     0.0000     0.0000     0.0000     0.0000</span>
     2882<span class="go">    4.9300     8.1600     0.0000     0.0000     0.0000     0.0000     0.0000</span>
     2883<span class="go">   -4.4900     0.2550     1.0950     0.0000     0.0000     0.0000     0.0000</span>
     2884<span class="go">   -2.2450    -1.9500    -0.7950    -0.4700     0.0000     0.0000     0.0000</span>
     2885<span class="go">    1.0250    -0.9000    -0.0900     0.1050     0.1450     0.0000     0.0000</span>
     2886<span class="go">    1.5500     0.9750    -0.8150     0.3600     0.0350    -0.0900     0.0000</span>
     2887<span class="go">   -0.4050     0.8300     0.0800    -0.0650     0.2200     0.0150    -0.1600</span>
     2888<span class="go">    0.0000     0.0000     0.0000     0.0000     0.0000     0.0000     0.0000</span>
     2889<span class="go">    0.0000    -0.1250     0.0000     0.0000     0.0000     0.0000     0.0000</span>
     2890<span class="go">    0.0000     1.0050    -0.7750     0.0000     0.0000     0.0000     0.0000</span>
     2891<span class="go">    0.0000    -0.2300     0.7150     0.7550     0.0000     0.0000     0.0000</span>
     2892<span class="go">    0.0000    -0.4100    -0.1250     0.2400     0.2700     0.0000     0.0000</span>
     2893<span class="go">    0.0000     0.0850    -0.3400    -0.0500    -0.2200    -0.0750     0.0000</span>
     2894<span class="go">    0.0000     0.2000    -0.2850    -0.0150    -0.0250     0.0900     0.0650</span>
     2895</pre></div>
     2896</div>
     2897<p>The source code for BNC comes with an example Perl script &#8216;test_tcpip_client.pl&#8217; that allows to read BNC&#8217;s Broadcast Corrections from the IP port for verification.</p>
     2898<div class="figure" id="id37">
     2899<span id="fig-17"></span><a class="reference internal image-reference" href="_images/fig_17.png"><img alt="_images/fig_17.png" src="_images/fig_17.png" style="width: 1120.0px; height: 722.0px;" /></a>
     2900<p class="caption"><span class="caption-number">Fig. 18 </span><span class="caption-text">Example for pulling, saving and output of Broadcast Corrections using BNC</span></p>
     2901</div>
     2902</div>
     2903</div>
     2904<div class="section" id="feed-engine">
     2905<span id="index-20"></span><h3>Feed Engine<a class="headerlink" href="#feed-engine" title="Permalink to this headline">¶</a></h3>
     2906<p>BNC can produce synchronized or unsynchronized observations epoch by epoch from all stations and satellites to feed a real-time GNSS network engine. Observations can be streamed out through an IP port and/or saved in a file. The output is always in the same plain ASCII format and sorted per incoming stream.</p>
     2907<p>Each epoch in the synchronized output begins with a line containing the GPS Week Number and the seconds within the GPS Week. Following lines begin with the mountpoint string of the stream which provides the observations followed by a satellite number. Specifications for satellite number, code, phase, Doppler and signal strength data follow definitions presented in the RINEX Version 3 documentation. In case of phase observations, a &#8216;Lock Time Indicator&#8217; is added. The end of an epoch is indicated by an empty line.</p>
     2908<p>A valid &#8216;Lock Time Indicator&#8217; is only presented for observations from RTCM Version 3 streams. The parameter provides a measure of the amount of time that has elapsed during which the receiver has maintained continuous lock on that satellite signal. If a cycle slip occurs during the previous measurement cycle, the lock indicator will be reset to Zero. In case of observations from RTCM Version 2 streams, the &#8216;Lock Time Indicator&#8217; is always set to &#8216;-1&#8217;.</p>
     2909<p><a class="reference internal" href="#tab-feed-engine"><span class="std std-numref">Table 6</span></a> describes the format of BNC&#8217;s synchronized output of GNSS observations which consists of &#8216;Epoch Records&#8217; and &#8216;Observation Records&#8217;. Each Epoch Record is followed by one or more Observation Records. The Observation Record is repeated for each satellite having been observed in the current epoch. The length of an Observation Record is given by the number of observation types for this satellite.</p>
     2910<table border="1" class="docutils" id="id38">
     2911<span id="tab-feed-engine"></span><caption><span class="caption-number">Table 6 </span><span class="caption-text">Contents and format of synchronized output of observations feeding a GNSS engine</span><a class="headerlink" href="#id38" title="Permalink to this table">¶</a></caption>
     2912<colgroup>
     2913<col width="42%" />
     2914<col width="25%" />
     2915<col width="32%" />
     2916</colgroup>
     2917<thead valign="bottom">
     2918<tr class="row-odd"><th class="head"><strong>Identifier</strong></th>
     2919<th class="head"><strong>Example</strong></th>
     2920<th class="head"><strong>Format</strong></th>
     2921</tr>
     2922</thead>
     2923<tbody valign="top">
     2924<tr class="row-even"><td><em>Epoch Record</em></td>
     2925<td>&nbsp;</td>
     2926<td>&nbsp;</td>
     2927</tr>
     2928<tr class="row-odd"><td>Record Identifier</td>
     2929<td>&gt;</td>
     2930<td>A1</td>
     2931</tr>
     2932<tr class="row-even"><td>GPS Week Number</td>
     2933<td>1850</td>
     2934<td>1X,I4</td>
     2935</tr>
     2936<tr class="row-odd"><td>GPS Seconds of Week</td>
     2937<td>120556.0000000</td>
     2938<td>1X,F14.7</td>
     2939</tr>
     2940<tr class="row-even"><td><em>Observation Record</em></td>
     2941<td>&nbsp;</td>
     2942<td>&nbsp;</td>
     2943</tr>
     2944<tr class="row-odd"><td>Mountpoint</td>
     2945<td>WTZR0</td>
     2946<td>A</td>
     2947</tr>
     2948<tr class="row-even"><td>Satellite Number</td>
     2949<td>G01</td>
     2950<td>1X,A3</td>
     2951</tr>
     2952<tr class="row-odd"><td><em>Pseudo-Range Data</em></td>
     2953<td>&nbsp;</td>
     2954<td>&nbsp;</td>
     2955</tr>
     2956<tr class="row-even"><td>Observation Code</td>
     2957<td>C1C</td>
     2958<td>1X,A3</td>
     2959</tr>
     2960<tr class="row-odd"><td>Pseudo-Range Observation</td>
     2961<td>25394034.112</td>
     2962<td>1X,F14.3</td>
     2963</tr>
     2964<tr class="row-even"><td><em>Carrier Phase Data</em></td>
     2965<td>&nbsp;</td>
     2966<td>&nbsp;</td>
     2967</tr>
     2968<tr class="row-odd"><td>Observation Code</td>
     2969<td>L1C</td>
     2970<td>1X,A3</td>
     2971</tr>
     2972<tr class="row-even"><td>Carrier Phase Observation</td>
     2973<td>133446552.870</td>
     2974<td>1X,F14.3</td>
     2975</tr>
     2976<tr class="row-odd"><td>Lock Time Indicator</td>
     2977<td>11</td>
     2978<td>1X,I4</td>
     2979</tr>
     2980<tr class="row-even"><td><em>Doppler Data</em></td>
     2981<td>&nbsp;</td>
     2982<td>&nbsp;</td>
     2983</tr>
     2984<tr class="row-odd"><td>Observation Code</td>
     2985<td>D1C</td>
     2986<td>1X,A3</td>
     2987</tr>
     2988<tr class="row-even"><td>Doppler Observation</td>
     2989<td>-87.977</td>
     2990<td>1X,F14.3</td>
     2991</tr>
     2992<tr class="row-odd"><td><em>Signal Strength</em></td>
     2993<td>&nbsp;</td>
     2994<td>&nbsp;</td>
     2995</tr>
     2996<tr class="row-even"><td>Observation Code</td>
     2997<td>S2W</td>
     2998<td>1X,A3</td>
     2999</tr>
     3000<tr class="row-odd"><td>Observed Signal Strength</td>
     3001<td>34.750</td>
     3002<td>1X,F8.3</td>
     3003</tr>
     3004</tbody>
     3005</table>
     3006<p>The following is an example for synchronized file and IP port output, which presents observations from GPS, GLONASS, Galileo, BDS (BeiDou), QZSS, and SBAS satellites as collected through streams FFMJ1, WTZR0 and CUT07:</p>
     3007<div class="highlight-console"><div class="highlight"><pre><span class="gp">&gt;</span> <span class="m">1884</span> 206010.0000000
     3008<span class="go">FFMJ1 G02 C1C   23286796.846 L1C  122372909.535  127 S1C   49.000 C2W   23286793.846 L2W   95355531.583  127 S2W   36.000</span>
     3009<span class="go">...</span>
     3010<span class="go">FFMJ1 G26 C1C   24796690.856 L1C  130307533.550  127 S1C   42.000 C2W   24796697.776 L2W  101538315.510  127 S2W   25.000</span>
     3011<span class="go">FFMJ1 S20 C1C   38682850.302 L1C  203279786.777  127 S1C   42.000</span>
     3012<span class="go">FFMJ1 S36 C1C   38288096.846 L1C  201205293.221  127 S1C   47.000</span>
     3013<span class="go">FFMJ1 R03 C1C   23182737.548 L1C  124098947.838  127 S1C   48.000 C2P   23182746.288 L2P   96521352.130  127 S2P   42.000</span>
     3014<span class="go">...</span>
     3015<span class="go">FFMJ1 R21 C1C   22201343.772 L1C  118803851.388  127 S1C   52.000 C2P   22201348.892 L2P   92402993.884  127 S2P   44.000</span>
     3016<span class="go">CUT07 G01 C1C   25318977.766 L1C  133052476.488  521 D1C       2533.500 S1C   33.688 C2W   25318993.668 L2W  103677584.878  521 S2W   15.625 C2X   25318991.820 L2X  103676566.850  521 S2X   35.375 C5X   25318993.461 L5X   99357161.238  521 S5X   39.812</span>
     3017<span class="go">...</span>
     3018<span class="go">CUT07 G27 C1C   20251005.351 L1C  106420601.969  627 D1C        250.937 S1C   50.312 C2W   20251014.512 L2W   82924447.644  627 S2W   45.125 C2X   20251014.246 L2X   82924648.644  627 S2X   53.188 C5X   20251015.480 L5X   79469461.619  627 S5X   56.375</span>
     3019<span class="go">CUT07 R01 C1C   20312587.149 L1C  108583395.373  625 D1C      -2456.703 S1C   52.875 C1P   20312586.192 L1P  108582844.382  625 S1P   51.000 C2C   20312593.422 L2C   84452892.610  625 S2C   43.625 C2P   20312593.836 L2P   84453114.622  625 S2P   42.312</span>
     3020<span class="go">...</span>
     3021<span class="go">CUT07 R24 C1C   19732223.242 L1C  105517564.659  630 D1C         -7.477 S1C   47.375 C1P   19732222.609 L1P  105517564.669  630 S1P   46.375 C2C   19732227.660 L2C   82069550.193  630 S2C   38.125 C2P   19732227.316 L2P   82068477.204  630 S2P   37.375</span>
     3022<span class="go">CUT07 E11 C1X   28843071.547 L1X  151571208.816  405 D1X      -2221.055 S1X   29.000 C7X   28843082.531 L7X  116138795.418  405 S7X   27.188 C8X   28843085.699 L8X  114662585.261  405 S8X   33.688 C5X   28843086.281 L5X  113186518.907  405 S5X   30.375</span>
     3023<span class="go">...</span>
     3024<span class="go">CUT07 E30 C1X   28096037.289 L1X  147645296.835  630 D1X      -2020.613 S1X   34.688 C7X   28096054.070 L7X  113131111.635  630 S7X   36.875 C8X   28096055.684 L8X  111692702.565  630 S8X   40.375 C5X   28096058.008 L5X  110254591.278  630 S5X   36.188</span>
     3025<span class="go">CUT07 S27 C1C   40038220.843 L1C  210402303.982  616 D1C        104.688 S1C   36.125 C5I   40038226.375 L5I  157118241.003  616 S5I   40.875</span>
     3026<span class="go">...</span>
     3027<span class="go">CUT07 S37 C1C   37791754.594 L1C  198596881.251  704 D1C        106.605 S1C   37.875</span>
     3028<span class="go">CUT07 J01 C1C   33076065.781 L1C  173816471.106  674 D1C        169.765 S1C   48.375 C1Z   33076063.086 L1Z  173815528.437  674 S1Z   48.625 C6L   33076065.652 L6L  141084039.422  674 S6L   52.688 C2X   33076070.523 L2X  135440679.474  674 S2X   50.500 C5X   33076076.496 L5X  129797319.733  674 S5X   54.188 C1X   33076065.492 L1X  173815529.101  674 S1X   52.375</span>
     3029<span class="go">CUT07 C01 C2I   37725820.914 L2I  196447455.374  704 D2I         90.898 S2I   41.312 C6I   37725810.168 L6I  159630204.932  704 S6I   44.875 C7I   37725815.196 L7I  151906389.245  704 S7I   45.812</span>
     3030<span class="go">...</span>
     3031<span class="go">CUT07 C14 C2I   23351041.328 L2I  121594621.501  592 D2I       2422.203 S2I   45.688 C6I   23351032.926 L6I   98805869.415  592 S6I   48.500 C7I   23351041.996 L7I   94024977.673  592 S7I   45.688</span>
     3032<span class="go">WTZR0 G02 C1C   23641481.864 L1C  124236803.604  127 S1C   47.500 C2W   23641476.604 L2W   96807881.233  127 S2W   39.250</span>
     3033<span class="go">...</span>
     3034<span class="go">WTZR0 G26 C1C   24681555.676 L1C  129702453.534  127 S1C   43.750 C2W   24681561.256 L2W  101066873.870  127 S2W   37.750</span>
     3035<span class="go">WTZR0 R03 C1C   22982596.508 L1C  123027564.682  127 S1C   47.000 C2P   22982598.368 L2P   95688085.627  127 S2P   43.250</span>
     3036<span class="go">...</span>
     3037<span class="go">WTZR0 R21 C1C   22510252.692 L1C  120456902.811  127 S1C   47.500 C2P   22510253.132 L2P   93688698.401  127 S2P   44.000</span>
    24553038
    2456 <p><h4>2.8.1 <a name="corrdir">Directory, ASCII - optional</h4></p>
    2457 <p>
    2458 Specify a directory for saving Broadcast Corrections in files. If the specified directory does not exist, BNC will not create Broadcast Correction files. Default value for Broadcast Correction 'Directory' is an empty option field, meaning that no Broadcast Correction files will be created.
    2459 </p>
    2460 
    2461 <p><h4>2.8.2 <a name="corrint">Interval - mandatory if 'Directory, ASCII' is set</h4></p>
    2462 <p>
    2463 Select the length of the Broadcast Correction files. The default value is '1 day'.
    2464 </p>
    2465 
    2466 <p><h4>2.8.3 <a name="corrport">Port - optional</h4></p>
    2467 <p>
    2468 BNC can output epoch by epoch synchronized Broadcast Corrections in ASCII format on your local host (IP 127.0.0.1) through an IP 'Port'. Specify an IP port number to activate this function. The default is an empty option field, meaning that no Broadcast Correction output via IP port is generated.
    2469 </p>
    2470 <p>
    2471 The output format is similar to the format used for saving Broadcast Corrections in a file.
    2472 </p>
    2473 <p>
    2474 The following is an example output for the stream from mountpoint CLK93:
    2475 <pre>
    2476 > ORBIT 2015 06 19 16 41 00.0 2 53 CLK93
    2477 G01  85     0.5891    -0.5124    -0.0216       -0.0001    -0.0002     0.0000
    2478 G02  25  -150.1820    11.4676    84.5216        0.4130    -0.6932     1.0159
    2479 G03  79    15.1999   141.9932  -156.4244        0.6782    -0.8607    -0.8211
    2480 ...
    2481 G32  39     1.8454     0.4888    -0.3876       -0.0001    -0.0001     0.0001
    2482 R01  79    -0.0506     1.9024    -0.0120        0.0004     0.0002    -0.0000
    2483 R02  79     0.1623     0.9012     0.3984        0.0001     0.0001     0.0002
    2484 R03  79     0.3247    -2.6704    -0.0240        0.0005    -0.0002     0.0002
    2485 ...
    2486 R24  79     0.7046    -0.5088    -0.0160       -0.0000     0.0000    -0.0002
    2487 > CLOCK 2015 06 19 16 41 00.0 2 53 CLK93
    2488 G01  85  -116.9441     0.0000     0.0000
    2489 G02  25  -110.4472     0.0000     0.0000
    2490 G03  79   -96.8299     0.0000     0.0000
    2491 ...
    2492 G32  39  -119.2757     0.0000     0.0000
    2493 R01  79     1.5703     0.0000     0.0000
    2494 R02  79    -1.4181     0.0000     0.0000
    2495 R03  79     0.2072     0.0000     0.0000
    2496 ...
    2497 R24  79     1.1292     0.0000     0.0000
    2498 > CODE_BIAS 2015 06 19 16 41 00.0 0 56 CLK93
    2499 E11    3   1B     1.3800   5Q     2.4800   7Q     2.5000
    2500 E12    3   1B     0.3900   5Q     0.6900   7Q     0.5300
    2501 E19    3   1B    -1.7800   5Q    -3.1900   7Q    -3.0700
    2502 G01    5   1C    -3.3100   1W    -3.7500   2W    -6.1900   2X    -5.7800   5I    -5.4200
    2503 G02    5   1C     3.6000   1W     3.9300   2W     6.4800   2X     0.0000   5I     0.0000
    2504 G03    5   1C    -2.1600   1W    -2.6500   2W    -4.3600   2X    -4.4800   5I    -5.3400
    2505 ...
    2506 G32    5   1C    -1.5800   1W    -1.1000   2W    -1.8200   2X     0.0000   5I     0.0000
    2507 R01    4   1C    -2.4900   1P    -2.4900   2C    -3.1500   2P    -4.1200
    2508 R02    4   1C     0.3900   1P     0.2100   2C     0.4000   2P     0.3400
    2509 R03    4   1C     2.4800   1P     2.2800   2C     3.7800   2P     3.7700
    2510 ...
    2511 R24    4   1C     2.7000   1P     2.7800   2C     3.9800   2P     4.6000
    2512 > PHASE_BIAS 2015 06 19 16 41 00.0 2 31 CLK93
    2513  0   1
    2514 G01 309.37500000   0.00000000    3   1C     3.9922   1   2   6   2W     6.3568   1   2   6   5I     6.8726   1   2   6
    2515 G02 263.67187500   0.00000000    3   1C    -4.0317   1   2   7   2W    -6.6295   1   2   7   5I     0.0000   1   2   7
    2516 G03 267.89062500   0.00000000    3   1C     3.1267   1   2   4   2W     4.9126   1   2   4   5I     5.6478   1   2   4
    2517 ...
    2518 G32 255.93750000   0.00000000    3   1C     1.3194   1   2   5   2W     2.1448   1   2   5   5I     0.0000   1   2   5
    2519 > VTEC 2015 06 19 16 41 00.0 6 1 CLK93
    2520  1  6  6   450000.0
    2521    16.7450     0.0000     0.0000     0.0000     0.0000     0.0000     0.0000
    2522     4.9300     8.1600     0.0000     0.0000     0.0000     0.0000     0.0000
    2523    -4.4900     0.2550     1.0950     0.0000     0.0000     0.0000     0.0000
    2524    -2.2450    -1.9500    -0.7950    -0.4700     0.0000     0.0000     0.0000
    2525     1.0250    -0.9000    -0.0900     0.1050     0.1450     0.0000     0.0000
    2526     1.5500     0.9750    -0.8150     0.3600     0.0350    -0.0900     0.0000
    2527    -0.4050     0.8300     0.0800    -0.0650     0.2200     0.0150    -0.1600
    2528     0.0000     0.0000     0.0000     0.0000     0.0000     0.0000     0.0000
    2529     0.0000    -0.1250     0.0000     0.0000     0.0000     0.0000     0.0000
    2530     0.0000     1.0050    -0.7750     0.0000     0.0000     0.0000     0.0000
    2531     0.0000    -0.2300     0.7150     0.7550     0.0000     0.0000     0.0000
    2532     0.0000    -0.4100    -0.1250     0.2400     0.2700     0.0000     0.0000
    2533     0.0000     0.0850    -0.3400    -0.0500    -0.2200    -0.0750     0.0000
    2534     0.0000     0.2000    -0.2850    -0.0150    -0.0250     0.0900     0.0650
    2535 </pre>
    2536 </p>
    2537 <p>
    2538 The source code for BNC comes with an example Perl script 'test_tcpip_client.pl' that allows to read BNC's Broadcast Corrections from the IP port for verification.
    2539 </p>
    2540 
    2541 <p><img src="IMG/screenshot37.png"/></p>
    2542 <p><u>Figure 17:</u> Example for pulling, saving and output of Broadcast Corrections using BNC</p>
    2543 
    2544 <p><h4>2.9 <a name="syncout">Feed Engine</h4></p>
    2545 
    2546 <p>
    2547 BNC can produce synchronized or unsynchronized observations epoch by epoch from all stations and satellites to feed a real-time GNSS network engine. Observations can be streamed out through an IP port and/or saved in a local file. The output is always in the same plain ASCII format and sorted per incoming stream.
    2548 </p>
    2549 
    2550 <p>
    2551 Each epoch in the synchronized output begins with a line containing the GPS Week Number and the seconds within the GPS Week. Following lines begin with the mountpoint string of the stream which provides the observations followed by a satellite number. Specifications for satellite number, code, phase, Doppler and signal strength data follow definitions presented in the RINEX Version 3 documentation. In case of phase observations, a 'Lock Time Indicator' is added. The end of an epoch is indicated by an empty line.
    2552 </p>
    2553 
    2554 <p>
    2555 A valid 'Lock Time Indicator' is only presented for observations from RTCM Version 3 streams. The parameter provides a measure of the amount of time that has elapsed during which the receiver has maintained continuous lock on that satellite signal. If a cycle slip occurs during the previous measurement cycle, the lock indicator will be reset to Zero. In case of observations from RTCM Version 2 streams, the 'Lock Time Indicator' is always set to '-1'.
    2556 </p>
    2557 
    2558 <p>
    2559 The following table describes the format of BNC's synchronized output of GNSS observations which consists of 'Epoch Records' and 'Observation Records'. Each Epoch Record is followed by one or more Observation Records. The Observation Record is repeated for each satellite having been observed in the current epoch. The length of an Observation Record is given by the number of observation types for this satellite.
    2560 </p>
    2561 
    2562 <p><u>Table 2:</u> Contents and format of synchronized output of observations feeding a GNSS engine</p>
    2563 <p>
    2564 <table>
    2565 <tr><td></td><td><b>Example</b></td><td><b>Format</b></td></tr>
    2566 
    2567 <tr><td><b>Epoch Record</b></td><td></td><td></td></tr>
    2568 <tr><td>Record Identifier</td><td>></td><td>A1</td></tr>
    2569 <tr><td>GPS Week Number</td><td>1850</td><td>1X,I4</td></tr>
    2570 <tr><td>GPS Seconds of Week</td><td>120556.0000000 &nbsp; &nbsp;</td><td>1X,F14.7</td></tr>
    2571 
    2572 <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
    2573 <tr><td><b>Observation Record</b></td><td></td><td></td></tr>
    2574 <tr><td>Mountpoint</td><td>WTZR0</td><td>A</td></tr>
    2575 <tr><td>Satellite Number</td><td>G01</td><td>1X,A3</td></tr>
    2576 
    2577 <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
    2578 
    2579 <tr><td><u>Pseudo-Range Data</u></td><td></td><td></td></tr>
    2580 <tr><td>Observation Code</td><td><b>C</b>1C</td><td>1X,A3</td></tr>
    2581 <tr><td>Pseudo-Range Observation</td><td>25394034.112</td><td>1X,F14.3</td></tr>
    2582 
    2583 <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
    2584 
    2585 <tr><td><u>Carrier Phase Data</u></td><td></td><td></td></tr>
    2586 <tr><td>Observation Code</td><td><b>L</b>1C</td><td>1X,A3</td></tr>
    2587 <tr><td>Carrier Phase Observation</td><td>133446552.870</td><td>1X,F14.3</td></tr>
    2588 <tr><td>Lock Time Indicator</td><td>11</td><td>1X,I4</td></tr>
    2589 
    2590 <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
    2591 
    2592 <tr><td><u>Doppler Data</u></td><td></td><td></td></tr>
    2593 <tr><td>Observation Code</td><td><b>D</b>1C</td><td>1X,A3</td></tr>
    2594 <tr><td>Doppler Observation</td><td>-87.977</td><td>1X,F14.3</td></tr>
    2595 
    2596 <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
    2597 
    2598 <tr><td><u>Signal Strength</u></td><td></td><td></td></tr>
    2599 <tr><td>Observation Code</td><td><b>S</b>2W</td><td>1X,A3</td></tr>
    2600 <tr><td>Observed Signal Strength &nbsp; &nbsp;</td><td>34.750</td><td>1X,F8.3</td></tr>
    2601 
     3039<span class="gp">&gt;</span> <span class="m">1884</span> 206011.0000000
     3040<span class="go">...</span>
     3041</pre></div>
     3042</div>
     3043<p>The source code for BNC comes with a Perl script named &#8216;test_tcpip_client.pl&#8217; that allows to read BNC&#8217;s (synchronized or unsynchronized) ASCII observation output from the IP port and print it on standard output for verification.</p>
     3044<p>Note that any socket connection of an application to BNC&#8217;s synchronized or unsynchronized observation ports is recorded in the &#8216;Log&#8217; tab on the bottom of the main window together with a connection counter, resulting in log records like &#8216;New client connection on sync/usync port: # 1&#8217;.</p>
     3045<p>The following figure shows the screenshot of a BNC configuration where a number of streams is pulled from different Ntrip Broadcasters to feed a GNSS engine via IP port output.</p>
     3046<div class="figure" id="id39">
     3047<span id="fig-18"></span><a class="reference internal image-reference" href="_images/fig_18.png"><img alt="_images/fig_18.png" src="_images/fig_18.png" style="width: 1120.0px; height: 749.0px;" /></a>
     3048<p class="caption"><span class="caption-number">Fig. 19 </span><span class="caption-text">Synchronized BNC output via IP port to feed a GNSS real-time engine</span></p>
     3049</div>
     3050<div class="section" id="id6">
     3051<h4>Port - optional<a class="headerlink" href="#id6" title="Permalink to this headline">¶</a></h4>
     3052<p>BNC can produce synchronized observations in ASCII format on your local host (IP 127.0.0.1) through an IP &#8216;Port&#8217;. Synchronized means that BNC collects all observation data for a specific epoch, which become available within a certain number of seconds (see &#8216;Wait for Full Obs Epoch&#8217; option). It then - epoch by epoch - outputs whatever has been received. The output comes block-wise per stream following the format specified in <a class="reference internal" href="#tab-feed-engine"><span class="std std-numref">Table 6</span></a>. Enter an IP port number here to activate this function. The default is an empty option field, meaning that no synchronized output is generated.</p>
     3053</div>
     3054<div class="section" id="wait-for-full-obs-epoch-mandatory-if-port-is-set">
     3055<h4>Wait for Full Obs Epoch - mandatory if &#8216;Port&#8217; is set<a class="headerlink" href="#wait-for-full-obs-epoch-mandatory-if-port-is-set" title="Permalink to this headline">¶</a></h4>
     3056<p>When feeding a real-time GNSS network engine waiting for synchronized observations epoch by epoch, BNC drops whatever is received later than &#8216;Wait for full obs epoch&#8217; seconds. A value of 3 to 5 seconds could be an appropriate choice for that, depending on the latency of the incoming streams and the delay acceptable for your real-time GNSS product. Default value for &#8216;Wait for full obs epoch&#8217; is 5 seconds.</p>
     3057<p>Note that &#8216;Wait for full obs epoch&#8217; does not affect the RINEX Observation file content. Observations received later than &#8216;Wait for full obs epoch&#8217; seconds will still be included in the RINEX Observation files.</p>
     3058</div>
     3059<div class="section" id="sampling-mandatory-if-file-or-port-is-set">
     3060<h4>Sampling - mandatory if &#8216;File&#8217; or &#8216;Port&#8217; is set<a class="headerlink" href="#sampling-mandatory-if-file-or-port-is-set" title="Permalink to this headline">¶</a></h4>
     3061<p>Select a synchronized observation output sampling interval in seconds. A value of zero &#8216;0&#8217; tells BNC to send/store all received epochs. This is the default value.</p>
     3062</div>
     3063<div class="section" id="file-optional">
     3064<h4>File - optional<a class="headerlink" href="#file-optional" title="Permalink to this headline">¶</a></h4>
     3065<p>Specify the full path to a &#8216;File&#8217; where synchronized observations are saved in plain ASCII format. The default value is an empty option field, meaning that no ASCII output file is created.</p>
     3066<p>Beware that the size of this file can rapidly increase depending on the number of incoming streams. To prevent it from becoming too large, the name of the file can be changed on-the-fly. This option is primarily meant for test and evaluation.</p>
     3067</div>
     3068<div class="section" id="port-unsynchronized-optional">
     3069<h4>Port (unsynchronized) - optional<a class="headerlink" href="#port-unsynchronized-optional" title="Permalink to this headline">¶</a></h4>
     3070<p>BNC can produce unsynchronized observations from all configured streams in ASCII format on your local host (IP 127.0.0.1) through an IP &#8216;Port&#8217;. Unsynchronized means that BNC immediately forwards any received observation to the port. Nevertheless, the output is produced block-wise per stream. Specify an IP port number here to activate this function. The default is an empty option field, meaning that no unsynchronized output is generated.</p>
     3071<p>The following is an example for unsynchronized IP port output which presents observations from GPS and GLONASS as collected through stream WTZR0. The format for synchronized and unsynchronized output of observations is very much the same. However, unsynchronized output does not have &#8216;Epoch Records&#8217; and &#8216;Observation Records&#8217;. Instead each record contains the &#8216;GPS Week Number&#8217; and &#8216;GPS Second of Week&#8217; time tag between the mountpoint string and the satellite number, see <a class="reference internal" href="#tab-feed-engine"><span class="std std-numref">Table 6</span></a> for format details.</p>
     3072<div class="highlight-console"><div class="highlight"><pre><span class="go">WTZR0 1884 209623.0000000 G02 C1C   22259978.112 L1C  116976955.890  127 S1C   49.250 C2W   22259974.472 L2W   91150855.991  127 S2W   44.500</span>
     3073<span class="go">WTZR0 1884 209623.0000000 G03 C1C   24426736.058 L1C  128363272.624  127 S1C   43.500 C2W   24426741.838 L2W  100023289.335  127 S2W   39.000</span>
     3074<span class="go">...</span>
     3075<span class="go">WTZR0 1884 209623.0000000 G29 C1C   25275897.592 L1C  132825869.191   90 S1C   35.250 C2W   25275893.692 L2W  103500567.110    8 S2W   28.500</span>
     3076<span class="go">WTZR0 1884 209623.0000000 G30 C1C   23670676.284 L1C  124390283.441  127 S1C   46.750 C2W   23670679.784 L2W   96927531.685  127 S2W   39.500</span>
     3077<span class="go">WTZR0 1884 209623.0000000 R04 C1C   20758122.104 L1C  111158778.398  127 S1C   50.000 C2P   20758121.664 L2P   86456803.800  127 S2P   47.000</span>
     3078<span class="go">WTZR0 1884 209623.0000000 R05 C1C   19430829.552 L1C  103868912.028  127 S1C   45.750 C2P   19430829.672 L2P   80786936.849  127 S2P   46.750</span>
     3079<span class="go">...</span>
     3080</pre></div>
     3081</div>
     3082</div>
     3083</div>
     3084<div class="section" id="serial-output">
     3085<span id="index-21"></span><h3>Serial output<a class="headerlink" href="#serial-output" title="Permalink to this headline">¶</a></h3>
     3086<p>You may use BNC to feed a serially connected device like a GNSS receiver. For that, an incoming stream can be forwarded to a serial port. Depending on the stream content, the receiver may use it for Differential GNSS, Precise Point Positioning or any other purpose supported by its firmware. Note that receiving a VRS stream requires the receiver sending NMEA sentences (option &#8216;NMEA&#8217; set to &#8216;Manual&#8217; or &#8216;Auto&#8217;) to the Ntrip Broadcaster. <a class="reference internal" href="#fig-19"><span class="std std-numref">Fig. 20</span></a> shows the data flow when pulling a VRS stream or a physical (non-VRS) stream.</p>
     3087<div class="figure" id="id40">
     3088<span id="fig-19"></span><a class="reference internal image-reference" href="_images/fig_19.png"><img alt="_images/fig_19.png" src="_images/fig_19.png" style="width: 768.0px; height: 577.0px;" /></a>
     3089<p class="caption"><span class="caption-number">Fig. 20 </span><span class="caption-text">Flowcharts, BNC forwarding a stream to a serially connected receiver; sending NMEA sentences is mandatory for VRS streams</span></p>
     3090</div>
     3091<p><a class="reference internal" href="#fig-20"><span class="std std-numref">Fig. 21</span></a> shows the screenshot of an example situation where BNC pulls a VRS stream from an Ntrip Broadcaster to feed a serially connected RTK rover.</p>
     3092<div class="figure" id="id41">
     3093<span id="fig-20"></span><a class="reference internal image-reference" href="_images/fig_20.png"><img alt="_images/fig_20.png" src="_images/fig_20.png" style="width: 1000.0px; height: 722.0px;" /></a>
     3094<p class="caption"><span class="caption-number">Fig. 21 </span><span class="caption-text">BNC pulling a VRS stream to feed a serially connected RTK rover</span></p>
     3095</div>
     3096<div class="section" id="mountpoint-optional">
     3097<h4>Mountpoint - optional<a class="headerlink" href="#mountpoint-optional" title="Permalink to this headline">¶</a></h4>
     3098<p>Enter a &#8216;Mountpoint&#8217; to forward its corresponding stream to a serially connected GNSS receiver. When selecting one of the serial communication options listed below, make sure that you pick those configured to the serially connected receiver.</p>
     3099</div>
     3100<div class="section" id="port-name-mandatory-if-mountpoint-is-set">
     3101<h4>Port Name - mandatory if &#8216;Mountpoint&#8217; is set<a class="headerlink" href="#port-name-mandatory-if-mountpoint-is-set" title="Permalink to this headline">¶</a></h4>
     3102<p>Enter the serial &#8216;Port name&#8217; selected on your host for communication with the serially connected receiver. Valid port names are summarized in <a class="reference internal" href="#tab-port-names"><span class="std std-numref">Table 7</span></a>.</p>
     3103<table border="1" class="docutils" id="id42">
     3104<span id="tab-port-names"></span><caption><span class="caption-number">Table 7 </span><span class="caption-text">Valid port names for serially connected receivers.</span><a class="headerlink" href="#id42" title="Permalink to this table">¶</a></caption>
     3105<colgroup>
     3106<col width="41%" />
     3107<col width="59%" />
     3108</colgroup>
     3109<thead valign="bottom">
     3110<tr class="row-odd"><th class="head"><strong>OS</strong></th>
     3111<th class="head"><strong>Port Names</strong></th>
     3112</tr>
     3113</thead>
     3114<tbody valign="top">
     3115<tr class="row-even"><td>Windows</td>
     3116<td>COM1, COM2</td>
     3117</tr>
     3118<tr class="row-odd"><td>Linux</td>
     3119<td>/dev/ttyS0, /dev/ttyS1</td>
     3120</tr>
     3121<tr class="row-even"><td>FreeBSD</td>
     3122<td>/dev/ttyd0, /dev/ttyd1</td>
     3123</tr>
     3124<tr class="row-odd"><td>Digital Unix</td>
     3125<td>/dev/tty01, /dev/tty02</td>
     3126</tr>
     3127<tr class="row-even"><td>HP-UX</td>
     3128<td>/dev/tty1p0, /dev/tty2p0</td>
     3129</tr>
     3130<tr class="row-odd"><td>SGI/IRIX</td>
     3131<td>/dev/ttyf1, /dev/ttyf2</td>
     3132</tr>
     3133<tr class="row-even"><td>SunOS/Solaris</td>
     3134<td>/dev/ttya, /dev/ttyb</td>
     3135</tr>
     3136</tbody>
    26023137</table>
    2603 </p>
    2604 
    2605 <p>
    2606 The following is an example for synchronized file and IP port output, which presents observations from GPS, GLONASS, Galileo, BDS (BeiDou), QZSS, and SBAS satellites as collected through streams FFMJ1, WTZR0 and CUT07: <pre>
    2607 > 1884 206010.0000000
    2608 FFMJ1 G02 C1C   23286796.846 L1C  122372909.535  127 S1C   49.000 C2W   23286793.846 L2W   95355531.583  127 S2W   36.000
    2609 ...
    2610 FFMJ1 G26 C1C   24796690.856 L1C  130307533.550  127 S1C   42.000 C2W   24796697.776 L2W  101538315.510  127 S2W   25.000
    2611 FFMJ1 S20 C1C   38682850.302 L1C  203279786.777  127 S1C   42.000
    2612 FFMJ1 S36 C1C   38288096.846 L1C  201205293.221  127 S1C   47.000
    2613 FFMJ1 R03 C1C   23182737.548 L1C  124098947.838  127 S1C   48.000 C2P   23182746.288 L2P   96521352.130  127 S2P   42.000
    2614 ...
    2615 FFMJ1 R21 C1C   22201343.772 L1C  118803851.388  127 S1C   52.000 C2P   22201348.892 L2P   92402993.884  127 S2P   44.000
    2616 CUT07 G01 C1C   25318977.766 L1C  133052476.488  521 D1C       2533.500 S1C   33.688 C2W   25318993.668 L2W  103677584.878  521 S2W   15.625 C2X   25318991.820 L2X  103676566.850  521 S2X   35.375 C5X   25318993.461 L5X   99357161.238  521 S5X   39.812
    2617 ...
    2618 CUT07 G27 C1C   20251005.351 L1C  106420601.969  627 D1C        250.937 S1C   50.312 C2W   20251014.512 L2W   82924447.644  627 S2W   45.125 C2X   20251014.246 L2X   82924648.644  627 S2X   53.188 C5X   20251015.480 L5X   79469461.619  627 S5X   56.375
    2619 CUT07 R01 C1C   20312587.149 L1C  108583395.373  625 D1C      -2456.703 S1C   52.875 C1P   20312586.192 L1P  108582844.382  625 S1P   51.000 C2C   20312593.422 L2C   84452892.610  625 S2C   43.625 C2P   20312593.836 L2P   84453114.622  625 S2P   42.312
    2620 ...
    2621 CUT07 R24 C1C   19732223.242 L1C  105517564.659  630 D1C         -7.477 S1C   47.375 C1P   19732222.609 L1P  105517564.669  630 S1P   46.375 C2C   19732227.660 L2C   82069550.193  630 S2C   38.125 C2P   19732227.316 L2P   82068477.204  630 S2P   37.375
    2622 CUT07 E11 C1X   28843071.547 L1X  151571208.816  405 D1X      -2221.055 S1X   29.000 C7X   28843082.531 L7X  116138795.418  405 S7X   27.188 C8X   28843085.699 L8X  114662585.261  405 S8X   33.688 C5X   28843086.281 L5X  113186518.907  405 S5X   30.375
    2623 ...
    2624 CUT07 E30 C1X   28096037.289 L1X  147645296.835  630 D1X      -2020.613 S1X   34.688 C7X   28096054.070 L7X  113131111.635  630 S7X   36.875 C8X   28096055.684 L8X  111692702.565  630 S8X   40.375 C5X   28096058.008 L5X  110254591.278  630 S5X   36.188
    2625 CUT07 S27 C1C   40038220.843 L1C  210402303.982  616 D1C        104.688 S1C   36.125 C5I   40038226.375 L5I  157118241.003  616 S5I   40.875
    2626 ...
    2627 CUT07 S37 C1C   37791754.594 L1C  198596881.251  704 D1C        106.605 S1C   37.875
    2628 CUT07 J01 C1C   33076065.781 L1C  173816471.106  674 D1C        169.765 S1C   48.375 C1Z   33076063.086 L1Z  173815528.437  674 S1Z   48.625 C6L   33076065.652 L6L  141084039.422  674 S6L   52.688 C2X   33076070.523 L2X  135440679.474  674 S2X   50.500 C5X   33076076.496 L5X  129797319.733  674 S5X   54.188 C1X   33076065.492 L1X  173815529.101  674 S1X   52.375
    2629 CUT07 C01 C2I   37725820.914 L2I  196447455.374  704 D2I         90.898 S2I   41.312 C6I   37725810.168 L6I  159630204.932  704 S6I   44.875 C7I   37725815.196 L7I  151906389.245  704 S7I   45.812
    2630 ...
    2631 CUT07 C14 C2I   23351041.328 L2I  121594621.501  592 D2I       2422.203 S2I   45.688 C6I   23351032.926 L6I   98805869.415  592 S6I   48.500 C7I   23351041.996 L7I   94024977.673  592 S7I   45.688
    2632 WTZR0 G02 C1C   23641481.864 L1C  124236803.604  127 S1C   47.500 C2W   23641476.604 L2W   96807881.233  127 S2W   39.250
    2633 ...
    2634 WTZR0 G26 C1C   24681555.676 L1C  129702453.534  127 S1C   43.750 C2W   24681561.256 L2W  101066873.870  127 S2W   37.750
    2635 WTZR0 R03 C1C   22982596.508 L1C  123027564.682  127 S1C   47.000 C2P   22982598.368 L2P   95688085.627  127 S2P   43.250
    2636 ...
    2637 WTZR0 R21 C1C   22510252.692 L1C  120456902.811  127 S1C   47.500 C2P   22510253.132 L2P   93688698.401  127 S2P   44.000
    2638 
    2639 > 1884 206011.0000000
    2640 ...
    2641 </pre>
    2642 <p>
    2643 The source code for BNC comes with a Perl script named 'test_tcpip_client.pl' that allows to read BNC's (synchronized or unsynchronized) ASCII observation output from the IP port and print it on standard output for verification.
    2644 </p>
    2645 
    2646 <p>
    2647 Note that any socket connection of an application to BNC's synchronized or unsynchronized observation ports is recorded in the 'Log' tab on the bottom of the main window together with a connection counter, resulting in log records like 'New client connection on sync/usync port: # 1'.
    2648 </p>
    2649 
    2650 <p>
    2651 The following figure shows the screenshot of a BNC configuration where a number of streams is pulled from different Ntrip Broadcasters to feed a GNSS engine via IP port output.
    2652 </p>
    2653 <p><img src="IMG/screenshot12.png"/></p>
    2654 <p><u>Figure 18:</u> Synchronized BNC output via IP port to feed a GNSS real-time engine</p>
    2655 
    2656 <p><h4>2.9.1 <a name="syncport">Port - optional</h4></p>
    2657 <p>
    2658 BNC can produce synchronized observations in ASCII format on your local host (IP 127.0.0.1) through an IP 'Port'. Synchronized means that BNC collects all observation data for a specific epoch, which become available within a certain number of seconds (see 'Wait for Full Obs Epoch' option). It then - epoch by epoch - outputs whatever has been received. The output comes block-wise per stream following the format specified in Table 2. Enter an IP port number here to activate this function. The default is an empty option field, meaning that no synchronized output is generated.</p>
    2659 </p>
    2660 
    2661 <p><h4>2.9.2 <a name="syncwait">Wait for Full Obs Epoch - mandatory if 'Port' is set</h4></p>
    2662 <p>
    2663 When feeding a real-time GNSS network engine waiting for synchronized observations epoch by epoch, BNC drops whatever is received later than 'Wait for full obs epoch' seconds. A value of 3 to 5 seconds could be an appropriate choice for that, depending on the latency of the incoming streams and the delay acceptable for your real-time GNSS product. Default value for 'Wait for full obs epoch' is 5 seconds.
    2664 </p>
    2665 <p>
    2666 Note that 'Wait for full obs epoch' does not affect the RINEX Observation file content. Observations received later than 'Wait for full obs epoch' seconds will still be included in the RINEX Observation files.
    2667 </p>
    2668 
    2669 <p><h4>2.9.3 <a name="syncsample">Sampling - mandatory if 'File' or 'Port' is set</h4></p>
    2670 <p>
    2671 Select a synchronized observation output sampling interval in seconds. A value of zero '0' tells BNC to send/store all received epochs. This is the default value.
    2672 </p>
    2673 
    2674 <p><h4>2.9.4 <a name="syncfile">File - optional</h4></p>
    2675 <p>
    2676 Specify the full path to a 'File' where synchronized observations are saved in plain ASCII format. The default value is an empty option field, meaning that no ASCII output file is created.
    2677 </p>
    2678 <p>
    2679 Beware that the size of this file can rapidly increase depending on the number of incoming streams. To prevent it from becoming too large, the name of the file can be changed on-the-fly. This option is primarily meant for test and evaluation.
    2680 </p>
    2681 
    2682 <p><h4>2.9.5 <a name="syncuport">Port (unsynchronized) - optional</h4></p>
    2683 <p>
    2684 BNC can produce unsynchronized observations from all configured streams in ASCII format on your local host (IP 127.0.0.1) through an IP 'Port'. Unsynchronized means that BNC immediately forwards any received observation to the port. Nevertheless, the output is produced block-wise per stream. Specify an IP port number here to activate this function. The default is an empty option field, meaning that no unsynchronized output is generated.
    2685 </p>
    2686 <p>
    2687 The following is an example for unsynchronized IP port output which presents observations from GPS and GLONASS as collected through stream WTZR0. The format for synchronized and unsynchronized output of observations is very much the same. However, unsynchronized output does not have 'Epoch Records' and 'Observation Records'. Instead each record contains the 'GPS Week Number' and 'GPS Second of Week' time tag between the mountpoint string and the satellite number, see Table 2 for format details.
    2688 </p>
    2689 
    2690 <pre>
    2691 WTZR0 1884 209623.0000000 G02 C1C   22259978.112 L1C  116976955.890  127 S1C   49.250 C2W   22259974.472 L2W   91150855.991  127 S2W   44.500
    2692 WTZR0 1884 209623.0000000 G03 C1C   24426736.058 L1C  128363272.624  127 S1C   43.500 C2W   24426741.838 L2W  100023289.335  127 S2W   39.000
    2693 ...
    2694 WTZR0 1884 209623.0000000 G29 C1C   25275897.592 L1C  132825869.191   90 S1C   35.250 C2W   25275893.692 L2W  103500567.110    8 S2W   28.500
    2695 WTZR0 1884 209623.0000000 G30 C1C   23670676.284 L1C  124390283.441  127 S1C   46.750 C2W   23670679.784 L2W   96927531.685  127 S2W   39.500
    2696 WTZR0 1884 209623.0000000 R04 C1C   20758122.104 L1C  111158778.398  127 S1C   50.000 C2P   20758121.664 L2P   86456803.800  127 S2P   47.000
    2697 WTZR0 1884 209623.0000000 R05 C1C   19430829.552 L1C  103868912.028  127 S1C   45.750 C2P   19430829.672 L2P   80786936.849  127 S2P   46.750
    2698 ...
    2699 </pre>
    2700 
    2701 <p><h4>2.10 <a name="serial">Serial Output</h4></p>
    2702 <p>
    2703 You may use BNC to feed a serially connected device like a GNSS receiver. For that, an incoming stream can be forwarded to a serial port. Depending on the stream content, the receiver may use it for Differential GNSS, Precise Point Positioning or any other purpose supported by its firmware.
    2704 </p>
    2705 <p>
    2706 Note that receiving a VRS stream requires the receiver sending NMEA sentences (option 'NMEA' set to 'Manual' or 'Auto') to the Ntrip Broadcaster. The following figure shows the data flow when pulling a VRS stream or a physical (non-VRS) stream.
    2707 </p>
    2708 
    2709 <p><img src="IMG/screenshot35.png"/></p>
    2710 <p><u>Figure 19:</u> Flowcharts, BNC forwarding a stream to a serially connected receiver; sending NMEA sentences is mandatory for VRS streams</p>
    2711 
    2712 <p>
    2713 The following figure shows the screenshot of an example situation where BNC pulls a VRS stream from an Ntrip Broadcaster to feed a serially connected RTK rover.
    2714 </p>
    2715 
    2716 <p><img src="IMG/screenshot11.png"/></p>
    2717 <p><u>Figure 20:</u> BNC pulling a VRS stream to feed a serially connected RTK rover</p>
    2718 
    2719 <p><h4>2.10.1 <a name="sermount">Mountpoint - optional</h4></p>
    2720 <p>
    2721 Enter a 'Mountpoint' to forward its corresponding stream to a serially connected GNSS receiver.
    2722 </p>
    2723 <p>
    2724 When selecting one of the serial communication options listed below, make sure that you pick those configured to the serially connected receiver.
    2725 </p>
    2726 
    2727 <p><h4>2.10.2 <a name="serport">Port Name - mandatory if 'Mountpoint' is set</h4></p>
    2728 <p>
    2729 Enter the serial 'Port name' selected on your host for communication with the serially connected receiver. Valid port names are
    2730 </p>
    2731 <pre>
    2732    Windows:       COM1, COM2
    2733    Linux:         /dev/ttyS0, /dev/ttyS1
    2734    FreeBSD:       /dev/ttyd0, /dev/ttyd1
    2735    Digital Unix:  /dev/tty01, /dev/tty02
    2736    HP-UX:         /dev/tty1p0, /dev/tty2p0
    2737    SGI/IRIX:      /dev/ttyf1, /dev/ttyf2
    2738    SunOS/Solaris: /dev/ttya, /dev/ttyb
    2739 </pre>
    2740 <p>
    2741 Note that you must plug a serial cable in the port defined here before you start BNC.
    2742 </p>
    2743 
    2744 <p><h4>2.10.3 <a name="serbaud">Baud Rate - mandatory if 'Mountpoint' is set</h4></p>
    2745 <p>
    2746 Select a 'Baud rate' for the serial output link. Note that using a high baud rate is recommended.
    2747 </p>
    2748 
    2749 <p><h4>2.10.4 <a name="serflow">Flow Control - mandatory if 'Mountpoint' is set</h4></p>
    2750 <p>
    2751 Select a 'Flow control' for the serial output link. Note that your selection must equal the flow control configured to the serially connected device. Select 'OFF' if you do not know better.
    2752 </p>
    2753 
    2754 <p><h4>2.10.5 <a name="serparity">Parity - mandatory if 'Mountpoint' is set</h4></p>
    2755 <p>
    2756 Select the 'Parity' for the serial output link. Note that parity is often set to 'NONE'.
    2757 </p>
    2758 
    2759 <p><h4>2.10.6 <a name="serdata">Data Bits - mandatory if 'Mountpoint' is set</h4></p>
    2760 <p>
    2761 Select the number of 'Data bits' for the serial output link. Note that often '8' data bits are used.
    2762 </p>
    2763 
    2764 <p><h4>2.10.7 <a name="serstop">Stop Bits - mandatory if 'Mountpoint' is set</h4></p>
    2765 <p>
    2766 Select the number of 'Stop bits' for the serial output link. Note that often '1' stop bit is used.
    2767 </p>
    2768 
    2769 <p><h4>2.10.8 <a name="serauto">NMEA - mandatory if 'Mountpoint' is set</h4></p>
    2770 <p>The 'NMEA' option supports the so-called 'Virtual Reference Station' (VRS) concept which requires the receiver to send approximate position information to the Ntrip Broadcaster. Select 'no' if you do not want BNC to forward or upload any NMEA sentence to the Ntrip broadcaster in support of VRS.
    2771 </p>
    2772 <p>Select 'Auto' to automatically forward NMEA sentences of type GGA from your serially connected receiver to the Ntrip broadcaster and/or save them in a file.
    2773 </p>
    2774 <p>Select 'Manual GPGGA' or 'Manual GNGGA' if you want BNC to produce and upload GPGGA or GNGGA NMEA sentences to the Ntrip broadcaster because your serially connected receiver does not generate them. A Talker ID 'GP' proceeding the GGA string stands for GPS solutions while a Talker ID 'GN' stands for multi-constellation solutions.
    2775 </p>
    2776 <p>Note that selecting 'Auto' or 'Manual' works only for VRS streams which show up under the 'Streams' canvas on BNC's main window with 'nmea' stream attribute set to 'yes'. This attribute is either extracted from the Ntrip broadcaster's source-table or introduced by the user through editing the BNC configuration file.
    2777 </p>
    2778 
    2779 <p><h4>2.10.9 <a name="serfile">File - optional if 'NMEA' is set to 'Auto'</h4></p>
    2780 <p>Specify the full path to a file where NMEA sentences coming from your serially connected receiver are saved. Default is an empty option field, meaning that no NMEA sentences will be saved on disk.
    2781 </p>
    2782 <p><h4>2.10.10 <a name="serheight">Height - mandatory if 'NMEA' is set to 'Manual'</h4></p>
    2783 <p>
    2784 Specify an approximate 'Height' above mean sea level in meters for the reference station introduced through 'Mountpoint'. Together with the latitude and longitude from the Ntrip broadcaster source-table, the height information is used to build GGA sentences to be sent to the Ntrip broadcaster.
    2785 </p>
    2786 <p>For adjusting latitude and longitude values of a VRS stream given in the 'Streams' canvas, you can double click the latitude/longitude data fields, specify appropriate values and then hit Enter.
    2787 </p>
    2788 <p>This option is only relevant when option 'NMEA' is set to 'Manual GPGGA' or 'Manual GNGGA' respectively.
    2789 </p>
    2790 
    2791 <p><h4>2.10.11 <a name="sersampl">Sampling - mandatory if 'NMEA' is set to 'Manual'</h4></p>
    2792 <p>
    2793 Select a sampling interval in seconds for manual generation and upload of NMEA GGA sentences.
    2794 </p>
    2795 <p>
    2796 A sampling rate of '0' means that a GGA sentence will be sent only once to initialize the requested VRS stream. Note that some VRS systems need GGA sentences at regular intervals.
    2797 </p>
    2798 
    2799 <p><h4>2.11 <a name="advnote">Outages</h4></p>
    2800 <p>
    2801 At any time an incoming stream might become unavailable or corrupted. In such cases, it is important that the BNC operator and/or the stream providers become aware of the situation so that measures can be taken to restore the stream. Furthermore, continuous attempts to decode a corrupted stream can generate unnecessary workload for BNC. Outages and corruptions are handled by BNC as follows:
    2802 </p>
    2803 <p>
    2804 <u>Stream outages:</u> BNC considers a connection to be broken when there are no incoming data detected for more than 20 seconds. When this occurs, BNC will try to reconnect at a decreasing rate. It will first try to reconnect with 1 second delay and again in 2 seconds if the previous attempt failed. If the attempt is still unsuccessful, it will try to reconnect within 4 seconds after the previous attempt and so on. The waiting time doubles each time with a maximum of 256 seconds.
    2805 </p>
    2806 <p>
    2807 <u>Stream corruption:</u> Not all chunks of bits transferred to BNC's internal decoder may return valid observations. Sometimes several chunks might be needed before the next observation can be properly decoded. BNC buffers all outputs (both valid and invalid) from the decoder for a short time span (size derived from the expected 'Observation rate') to then determine whether a stream is valid or corrupted.
    2808 </p>
    2809 <p>
    2810 Outage and corruption events are reported in the 'Log' tab. They can also be passed on as parameters to a shell script or batch file to generate an advisory note to BNC's operator or affected stream providers. This functionality lets users utilize BNC as a real-time performance monitor and alarm system for a network of GNSS reference stations.
    2811 </p>
    2812 
    2813 <p><h4>2.11.1 <a name="obsrate">Observation Rate - optional</h4></p>
    2814 <p>
    2815 BNC can collect all returns (success or failure) coming from a decoder within a certain short time span to then decide whether a stream has an outage or its content is corrupted. This procedure needs a rough a priori estimate of the expected observation rate of the incoming streams.</p><p>An empty option field (default) means that you do not want explicit information from BNC about stream outages and incoming streams that cannot be decoded.
    2816 </p>
    2817 
    2818 <p><h4>2.11.2 <a name="advfail">Failure Threshold - mandatory if 'Observation rate' is set</h4></p>
    2819 <p>
    2820 Event 'Begin_Failure' will be reported if no data is received continuously for longer than the 'Failure threshold' time. Similarly, event 'Begin_Corrupted' will be reported when corrupted data is detected by the decoder continuously for longer than this 'Failure threshold' time. The default value is set to 15 minutes and is recommended as to not inundate users with too many event reports.
    2821 </p>
    2822 <p>
    2823 Note that specifying a value of zero '0' for the 'Failure threshold' will force BNC to report any stream failure immediately. Note also that for using this function you need to specify the 'Observation rate'.
    2824 </p>
    2825 
    2826 <p><h4>2.11.3 <a name="advreco">Recovery Threshold - mandatory if 'Observation rate' is set</h4></p>
    2827 <p>
    2828 Once a 'Begin_Failure' or 'Begin_Corrupted' event has been reported, BNC will check when the stream again becomes available or uncorrupted. Event 'End_Failure' or 'End_Corrupted' will be reported as soon as valid observations are detected continuously throughout the 'Recovery threshold' time span. The default value is set to 5 minutes and is recommended as to not inundate users with too many event reports.
    2829 </p>
    2830 <p>
    2831 Note that specifying a value of zero '0' for the 'Recovery threshold' will force BNC to report any stream recovery immediately. Note also that for using this function you need to specify the 'Observation rate'.
    2832 </p>
    2833 
    2834 <p><h4>2.11.4 <a name="advscript">Script - optional if 'Observation rate' is set</h4></p>
    2835 <p>
    2836 As mentioned before, BNC can trigger a shell script or a batch file to be executed when one of the described events is reported. This script can be used to email an advisory note to network operator or stream providers. To enable this feature, specify the full path to the script or batch file in the 'Script' field. The affected stream's mountpoint and type of event reported ('Begin_Outage', 'End_Outage', 'Begin_Corrupted' or 'End_Corrupted') will then be passed on to the script as command line parameters (%1 and %2 on Windows systems or $1 and $2 on Unix/Linux/Mac OS X systems) together with date and time information.
    2837 </p>
    2838 <p>
    2839 Leave the 'Script' field empty if you do not wish to use this option. An invalid path will also disable this option.
    2840 </p>
    2841 <p>
    2842 Examples for command line parameter strings passed on to the advisory 'Script' are:
    2843 <pre>
    2844    FFMJ0 Begin_Outage 08-02-21 09:25:59
    2845    FFMJ0 End_Outage 08-02-21 11:36:02 Begin was 08-02-21 09:25:59
    2846 </pre>
    2847 </p>
    2848 <p>
    2849 Sample script for Unix/Linux/Mac OS X systems:
    2850 </p>
    2851 <pre>
    2852    #!/bin/bash
    2853    sleep $((60*RANDOM/32767))
    2854    cat &gt; mail.txt &lt;&lt;EOF
    2855    Advisory Note to BNC User,
    2856    Please note the following advisory received from BNC.
    2857    Stream: $*
    2858    Regards, BNC
    2859    EOF
    2860    mail -s &quot;NABU: $1&quot; email@address &lt; mail.txt
    2861 </pre>
    2862 </p>
    2863 <p>
    2864 Note the sleep command in this script, which causes the system to wait for a random period of up to 60 seconds before sending the email. This should avoid overloading your mail server in case of a simultaneous failure of many streams.
    2865 </p>
    2866 
    2867 <p><h4>2.12 <a name="misc">Miscellaneous</h4></p>
    2868 <p>
    2869 This section describes several miscellaneous options which can be applied to a single stream (mountpoint) or to all configured streams.
    2870 </p>
    2871 
    2872 <p>
    2873 The following figure shows RTCM message numbers and observation types contained in stream 'CUT07' and the message latencies recorded every 2 seconds.
    2874 </p>
    2875 <p><img src="IMG/screenshot14.png"/></p>
    2876 <p><u>Figure 21:</u> RTCM message numbers, latencies and observation types logged by BNC</p>
    2877 
    2878 
    2879 <p><h4>2.12.1 <a name="miscmount">Mountpoint - optional </h4></p>
    2880 <p>
    2881 Specify a mountpoint to apply one or several of the 'Miscellaneous' options to the corresponding stream. Enter 'ALL' if you want to apply these options to all configured streams. An empty option field (default) means that you do not want BNC to apply any of these options.
    2882 </p>
    2883 
    2884 <p><h4>2.12.2 <a name="miscperf">Log Latency - optional </h4></p>
    2885 <p>
    2886  BNC can average latencies per stream over a certain period of GPS time, the 'Log latency' interval. Mean latencies are calculated from the individual latencies of one (first incoming) observation or Broadcast Correction per second. The mean latencies are then saved in BNC's logfile. Note that computing correct latencies requires the clock of the host computer to be properly synchronized. Note further that visualized latencies from the 'Latency' tab on the bottom of the main window represent individual latencies and not the mean latencies for the logfile.
    2887 </p>
    2888 <p>
    2889 <u>Latency:</u> Latency is defined in BNC by the following equation:
    2890 </p>
    2891 <pre>
    2892     UTC time provided by BNC's host
    2893   - GPS time of currently processed epoch
    2894   + Leap seconds between UTC and GPS time
    2895   --------------
    2896   = Latency
    2897 </pre>
    2898 <p>
    2899 <u>Statistics:</u> BNC counts the number of GPS seconds covered by at least one observation. It also estimates an observation rate (independent from the a priori specified 'Observation rate') from all observations received throughout the first full 'Log latency' interval. Based on this rate, BNC estimates the number of data gaps when appearing in subsequent intervals.
    2900 </p>
    2901 <p>
    2902 Latencies of observations or corrections to Broadcast Ephemeris and statistical information can be recorded in the 'Log' tab at the end of each 'Log latency' interval. A typical output from a 1 hour 'Log latency' interval would be:
    2903 </p>
    2904 <pre>
    2905 08-03-17 15:59:47 BRUS0: Mean latency 1.47 sec, min 0.66, max 3.02, rms 0.35, 3585 epochs, 15 gaps
    2906 </pre>
    2907 <p>
    2908 Select a 'Log latency' interval to activate this function or select the empty option field if you do not want BNC to log latencies and statistical information.
    2909 </p>
    2910 
    2911 
    2912 <p><h4>2.12.3 <a name="miscscan">Scan RTCM - optional</h4></p>
    2913 <p>
    2914 When configuring a GNSS receiver for RTCM stream generation, the firmware's setup interface may not provide details about RTCM message types and observation types. As reliable information concerning stream content should be available e.g. for Ntrip Broadcaster operators to maintain the broadcaster's source-table, BNC allows to scan RTCM streams for incoming message types and printout some of the contained meta-data. Contained observation types are also printed because such information is required a priori for the conversion of RTCM Version 3 MSM streams to RINEX Version 3 files. The idea for this option arose from 'inspectRTCM', a comprehensive stream analyzing tool written by D. St&ouml;cker.
    2915 </p>
    2916 <p>
    2917 Tick 'Scan RTCM' to scan RTCM Version 2 or 3 streams and log all contained
    2918 </p>
    2919 <ul>
     3138<p>Note that you must plug a serial cable in the port defined here before you start BNC.</p>
     3139</div>
     3140<div class="section" id="baud-rate-mandatory-if-mountpoint-is-set">
     3141<h4>Baud Rate - mandatory if &#8216;Mountpoint&#8217; is set<a class="headerlink" href="#baud-rate-mandatory-if-mountpoint-is-set" title="Permalink to this headline">¶</a></h4>
     3142<p>Select a &#8216;Baud rate&#8217; for the serial output link. Note that using a high baud rate is recommended.</p>
     3143</div>
     3144<div class="section" id="flow-control-mandatory-if-mountpoint-is-set">
     3145<h4>Flow Control - mandatory if &#8216;Mountpoint&#8217; is set<a class="headerlink" href="#flow-control-mandatory-if-mountpoint-is-set" title="Permalink to this headline">¶</a></h4>
     3146<p>Select a &#8216;Flow control&#8217; for the serial output link. Note that your selection must equal the flow control configured to the serially connected device. Select &#8216;OFF&#8217; if you do not know better.</p>
     3147</div>
     3148<div class="section" id="parity-mandatory-if-mountpoint-is-set">
     3149<h4>Parity - mandatory if &#8216;Mountpoint&#8217; is set<a class="headerlink" href="#parity-mandatory-if-mountpoint-is-set" title="Permalink to this headline">¶</a></h4>
     3150<p>Select the &#8216;Parity&#8217; for the serial output link. Note that parity is often set to &#8216;NONE&#8217;.</p>
     3151</div>
     3152<div class="section" id="data-bits-mandatory-if-mountpoint-is-set">
     3153<h4>Data Bits - mandatory if &#8216;Mountpoint&#8217; is set<a class="headerlink" href="#data-bits-mandatory-if-mountpoint-is-set" title="Permalink to this headline">¶</a></h4>
     3154<p>Select the number of &#8216;Data bits&#8217; for the serial output link. Note that often &#8216;8&#8217; data bits are used.</p>
     3155</div>
     3156<div class="section" id="stop-bits-mandatory-if-mountpoint-is-set">
     3157<h4>Stop Bits - mandatory if &#8216;Mountpoint&#8217; is set<a class="headerlink" href="#stop-bits-mandatory-if-mountpoint-is-set" title="Permalink to this headline">¶</a></h4>
     3158<p>Select the number of &#8216;Stop bits&#8217; for the serial output link. Note that often &#8216;1&#8217; stop bit is used.</p>
     3159</div>
     3160<div class="section" id="nmea-mandatory-if-mountpoint-is-set">
     3161<h4>NMEA - mandatory if &#8216;Mountpoint&#8217; is set<a class="headerlink" href="#nmea-mandatory-if-mountpoint-is-set" title="Permalink to this headline">¶</a></h4>
     3162<p>The &#8216;NMEA&#8217; option supports the so-called &#8216;Virtual Reference Station&#8217; (VRS) concept which requires the receiver to send approximate position information to the Ntrip Broadcaster. Select &#8216;no&#8217; if you do not want BNC to forward or upload any NMEA sentence to the Ntrip broadcaster in support of VRS.</p>
     3163<p>Select &#8216;Auto&#8217; to automatically forward NMEA sentences of type GGA from your serially connected receiver to the Ntrip broadcaster and/or save them in a file.</p>
     3164<p>Select &#8216;Manual GPGGA&#8217; or &#8216;Manual GNGGA&#8217; if you want BNC to produce and upload GPGGA or GNGGA NMEA sentences to the Ntrip broadcaster because your serially connected receiver does not generate them. A Talker ID &#8216;GP&#8217; proceeding the GGA string stands for GPS solutions while a Talker ID &#8216;GN&#8217; stands for multi-constellation solutions.</p>
     3165<p>Note that selecting &#8216;Auto&#8217; or &#8216;Manual&#8217; works only for VRS streams which show up under the &#8216;Streams&#8217; canvas on BNC&#8217;s main window with &#8216;nmea&#8217; stream attribute set to &#8216;yes&#8217;. This attribute is either extracted from the Ntrip broadcaster&#8217;s source-table or introduced by the user through editing the BNC configuration file.</p>
     3166</div>
     3167<div class="section" id="file-optional-if-nmea-is-set-to-auto">
     3168<h4>File - optional if &#8216;NMEA&#8217; is set to &#8216;Auto&#8217;<a class="headerlink" href="#file-optional-if-nmea-is-set-to-auto" title="Permalink to this headline">¶</a></h4>
     3169<p>Specify the full path to a file where NMEA sentences coming from your serially connected receiver are saved. Default is an empty option field, meaning that no NMEA sentences will be saved on disk.</p>
     3170</div>
     3171<div class="section" id="height-mandatory-if-nmea-is-set-to-manual">
     3172<h4>Height - mandatory if &#8216;NMEA&#8217; is set to &#8216;Manual&#8217;<a class="headerlink" href="#height-mandatory-if-nmea-is-set-to-manual" title="Permalink to this headline">¶</a></h4>
     3173<p>Specify an approximate &#8216;Height&#8217; above mean sea level in meters for the reference station introduced through &#8216;Mountpoint&#8217;. Together with the latitude and longitude from the Ntrip broadcaster source-table, the height information is used to build GGA sentences to be sent to the Ntrip broadcaster.</p>
     3174<p>For adjusting latitude and longitude values of a VRS stream given in the &#8216;Streams&#8217; canvas, you can double click the latitude/longitude data fields, specify appropriate values and then hit Enter.</p>
     3175<p>This option is only relevant when option &#8216;NMEA&#8217; is set to &#8216;Manual GPGGA&#8217; or &#8216;Manual GNGGA&#8217; respectively.</p>
     3176</div>
     3177<div class="section" id="sampling-mandatory-if-nmea-is-set-to-manual">
     3178<h4>Sampling - mandatory if &#8216;NMEA&#8217; is set to &#8216;Manual&#8217;<a class="headerlink" href="#sampling-mandatory-if-nmea-is-set-to-manual" title="Permalink to this headline">¶</a></h4>
     3179<p>Select a sampling interval in seconds for manual generation and upload of NMEA GGA sentences.</p>
     3180<p>A sampling rate of &#8216;0&#8217; means that a GGA sentence will be sent only once to initialize the requested VRS stream. Note that some VRS systems need GGA sentences at regular intervals.</p>
     3181</div>
     3182</div>
     3183<div class="section" id="outages">
     3184<span id="index-22"></span><h3>Outages<a class="headerlink" href="#outages" title="Permalink to this headline">¶</a></h3>
     3185<p>At any time an incoming stream might become unavailable or corrupted. In such cases, it is important that the BNC operator and/or the stream providers become aware of the situation so that measures can be taken to restore the stream. Furthermore, continuous attempts to decode a corrupted stream can generate unnecessary workload for BNC. Outages and corruptions are handled by BNC as follows:</p>
     3186<p>Stream outages: BNC considers a connection to be broken when there are no incoming data detected for more than 20 seconds. When this occurs, BNC will try to reconnect at a decreasing rate. It will first try to reconnect with 1 second delay and again in 2 seconds if the previous attempt failed. If the attempt is still unsuccessful, it will try to reconnect within 4 seconds after the previous attempt and so on. The waiting time doubles each time with a maximum of 256 seconds.</p>
     3187<p>Stream corruption: Not all chunks of bits transferred to BNC&#8217;s internal decoder may return valid observations. Sometimes several chunks might be needed before the next observation can be properly decoded. BNC buffers all outputs (both valid and invalid) from the decoder for a short time span (size derived from the expected &#8216;Observation rate&#8217;) to then determine whether a stream is valid or corrupted.</p>
     3188<p>Outage and corruption events are reported in the &#8216;Log&#8217; tab. They can also be passed on as parameters to a shell script or batch file to generate an advisory note to BNC&#8217;s operator or affected stream providers. This functionality lets users utilize BNC as a real-time performance monitor and alarm system for a network of GNSS reference stations, see <a class="reference internal" href="#fig-20b"><span class="std std-numref">Fig. 22</span></a> for an example setup.</p>
     3189<div class="figure" id="id43">
     3190<span id="fig-20b"></span><a class="reference internal image-reference" href="_images/fig_20b.png"><img alt="_images/fig_20b.png" src="_images/fig_20b.png" style="width: 889.0px; height: 609.0px;" /></a>
     3191<p class="caption"><span class="caption-number">Fig. 22 </span><span class="caption-text">Specifying thresholds for stream outage and recovery</span></p>
     3192</div>
     3193<div class="section" id="observation-rate-optional">
     3194<h4>Observation Rate - optional<a class="headerlink" href="#observation-rate-optional" title="Permalink to this headline">¶</a></h4>
     3195<p>BNC can collect all returns (success or failure) coming from a decoder within a certain short time span to then decide whether a stream has an outage or its content is corrupted. This procedure needs a rough a priori estimate of the expected observation rate of the incoming streams.</p>
     3196<p>An empty option field (default) means that you do not want explicit information from BNC about stream outages and incoming streams that cannot be decoded.</p>
     3197</div>
     3198<div class="section" id="failure-threshold-mandatory-if-observation-rate-is-set">
     3199<h4>Failure Threshold - mandatory if &#8216;Observation rate&#8217; is set<a class="headerlink" href="#failure-threshold-mandatory-if-observation-rate-is-set" title="Permalink to this headline">¶</a></h4>
     3200<p>Event &#8216;Begin_Failure&#8217; will be reported if no data is received continuously for longer than the &#8216;Failure threshold&#8217; time. Similarly, event &#8216;Begin_Corrupted&#8217; will be reported when corrupted data is detected by the decoder continuously for longer than this &#8216;Failure threshold&#8217; time. The default value is set to 15 minutes and is recommended as to not inundate users with too many event reports.</p>
     3201<p>Note that specifying a value of zero &#8216;0&#8217; for the &#8216;Failure threshold&#8217; will force BNC to report any stream failure immediately. Note also that for using this function you need to specify the &#8216;Observation rate&#8217;.</p>
     3202</div>
     3203<div class="section" id="recovery-threshold-mandatory-if-observation-rate-is-set">
     3204<h4>Recovery Threshold - mandatory if &#8216;Observation rate&#8217; is set<a class="headerlink" href="#recovery-threshold-mandatory-if-observation-rate-is-set" title="Permalink to this headline">¶</a></h4>
     3205<p>Once a &#8216;Begin_Failure&#8217; or &#8216;Begin_Corrupted&#8217; event has been reported, BNC will check when the stream again becomes available or uncorrupted. Event &#8216;End_Failure&#8217; or &#8216;End_Corrupted&#8217; will be reported as soon as valid observations are detected continuously throughout the &#8216;Recovery threshold&#8217; time span. The default value is set to 5 minutes and is recommended as to not inundate users with too many event reports.</p>
     3206<p>Note that specifying a value of zero &#8216;0&#8217; for the &#8216;Recovery threshold&#8217; will force BNC to report any stream recovery immediately. Note also that for using this function you need to specify the &#8216;Observation rate&#8217;.</p>
     3207</div>
     3208<div class="section" id="script-optional-if-observation-rate-is-set">
     3209<h4>Script - optional if &#8216;Observation rate&#8217; is set<a class="headerlink" href="#script-optional-if-observation-rate-is-set" title="Permalink to this headline">¶</a></h4>
     3210<p>As mentioned before, BNC can trigger a shell script or a batch file to be executed when one of the described events is reported. This script can be used to email an advisory note to network operator or stream providers. To enable this feature, specify the full path to the script or batch file in the &#8216;Script&#8217; field. The affected stream&#8217;s mountpoint and type of event reported (&#8216;Begin_Outage&#8217;, &#8216;End_Outage&#8217;, &#8216;Begin_Corrupted&#8217; or &#8216;End_Corrupted&#8217;) will then be passed on to the script as command line parameters (%1 and %2 on Windows systems or $1 and $2 on Unix/Linux/Mac OS X systems) together with date and time information.</p>
     3211<p>Leave the &#8216;Script&#8217; field empty if you do not wish to use this option. An invalid path will also disable this option.</p>
     3212<p>Examples for command line parameter strings passed on to the advisory &#8216;Script&#8217; are:</p>
     3213<div class="highlight-console"><div class="highlight"><pre><span class="go">FFMJ0 Begin_Outage 08-02-21 09:25:59</span>
     3214<span class="go">FFMJ0 End_Outage 08-02-21 11:36:02 Begin was 08-02-21 09:25:59</span>
     3215</pre></div>
     3216</div>
     3217<p>Sample script for Unix/Linux/Mac OS X systems:</p>
     3218<div class="highlight-none"><div class="highlight"><pre>#!/bin/bash
     3219sleep $((60*RANDOM/32767))
     3220cat &gt; mail.txt &lt;&lt;EOF
     3221Advisory Note to BNC User,
     3222Please note the following advisory received from BNC.
     3223Stream: $*
     3224Regards, BNC
     3225EOF
     3226mail -s &quot;NABU: $1&quot; email@address &lt; mail.txt
     3227</pre></div>
     3228</div>
     3229<p>Note the sleep command in this script, which causes the system to wait for a random period of up to 60 seconds before sending the email. This should avoid overloading your mail server in case of a simultaneous failure of many streams.</p>
     3230</div>
     3231</div>
     3232<div class="section" id="miscellaneous">
     3233<h3>Miscellaneous<a class="headerlink" href="#miscellaneous" title="Permalink to this headline">¶</a></h3>
     3234<p>This section describes several miscellaneous options which can be applied to a single stream (mountpoint) or to all configured streams. <a class="reference internal" href="#fig-21"><span class="std std-numref">Fig. 23</span></a> shows RTCM message numbers and observation types contained in stream &#8216;CUT07&#8217; and the message latencies recorded every 2 seconds.</p>
     3235<div class="figure" id="id44">
     3236<span id="fig-21"></span><a class="reference internal image-reference" href="_images/fig_21.png"><img alt="_images/fig_21.png" src="_images/fig_21.png" style="width: 1120.0px; height: 932.0px;" /></a>
     3237<p class="caption"><span class="caption-number">Fig. 23 </span><span class="caption-text">RTCM message numbers, latencies and observation types logged by BNC</span></p>
     3238</div>
     3239<div class="section" id="id7">
     3240<h4>Mountpoint - optional<a class="headerlink" href="#id7" title="Permalink to this headline">¶</a></h4>
     3241<p>Specify a mountpoint to apply one or several of the &#8216;Miscellaneous&#8217; options to the corresponding stream. Enter &#8216;ALL&#8217; if you want to apply these options to all configured streams. An empty option field (default) means that you do not want BNC to apply any of these options.</p>
     3242</div>
     3243<div class="section" id="log-latency-optional">
     3244<h4>Log Latency - optional<a class="headerlink" href="#log-latency-optional" title="Permalink to this headline">¶</a></h4>
     3245<p>BNC can average latencies per stream over a certain period of GPS time, the &#8216;Log latency&#8217; interval. Mean latencies are calculated from the individual latencies of one (first incoming) observation or Broadcast Correction per second. The mean latencies are then saved in BNC&#8217;s logfile. Note that computing correct latencies requires the clock of the host computer to be properly synchronized. Note further that visualized latencies from the &#8216;Latency&#8217; tab on the bottom of the main window represent individual latencies and not the mean latencies for the logfile.</p>
     3246<div class="section" id="latency">
     3247<span id="index-23"></span><h5>Latency<a class="headerlink" href="#latency" title="Permalink to this headline">¶</a></h5>
     3248<p>Latency is defined in BNC by</p>
     3249<div class="math">
     3250\[l = t_{UTC} - t_{GPS} + t_{leap}\]</div>
     3251<p>with latency <span class="math">\(l\)</span>, UTC time provided by BNC&#8217;s host <span class="math">\(t_{UTC}\)</span>, GPS time of currently processed epoch <span class="math">\(t_{GPS}\)</span> and Leap seconds between UTC and GPS time <span class="math">\(t_{leap}\)</span>.</p>
     3252</div>
     3253<div class="section" id="statistics">
     3254<span id="index-24"></span><h5>Statistics<a class="headerlink" href="#statistics" title="Permalink to this headline">¶</a></h5>
     3255<p>BNC counts the number of GPS seconds covered by at least one observation. It also estimates an observation rate (independent from the a priori specified &#8216;Observation rate&#8217;) from all observations received throughout the first full &#8216;Log latency&#8217; interval. Based on this rate, BNC estimates the number of data gaps when appearing in subsequent intervals.</p>
     3256<p>Latencies of observations or corrections to Broadcast Ephemeris and statistical information can be recorded in the &#8216;Log&#8217; tab at the end of each &#8216;Log latency&#8217; interval. A typical output from a 1 hour &#8216;Log latency&#8217; interval would be:</p>
     3257<div class="highlight-console"><div class="highlight"><pre><span class="go">08-03-17 15:59:47 BRUS0: Mean latency 1.47 sec, min 0.66, max 3.02, rms 0.35, 3585 epochs, 15 gaps</span>
     3258</pre></div>
     3259</div>
     3260<p>Select a &#8216;Log latency&#8217; interval to activate this function or select the empty option field if you do not want BNC to log latencies and statistical information.</p>
     3261</div>
     3262</div>
     3263<div class="section" id="scan-rtcm-optional">
     3264<h4>Scan RTCM - optional<a class="headerlink" href="#scan-rtcm-optional" title="Permalink to this headline">¶</a></h4>
     3265<p>When configuring a GNSS receiver for RTCM stream generation, the firmware&#8217;s setup interface may not provide details about RTCM message types and observation types. As reliable information concerning stream content should be available e.g. for Ntrip Broadcaster operators to maintain the broadcaster&#8217;s source-table, BNC allows to scan RTCM streams for incoming message types and printout some of the contained meta-data. Contained observation types are also printed because such information is required a priori for the conversion of RTCM Version 3 MSM streams to RINEX Version 3 files. The idea for this option arose from &#8216;inspectRTCM&#8217;, a comprehensive stream analyzing tool written by D. Stöcker.</p>
     3266<p>Tick &#8216;Scan RTCM&#8217; to scan RTCM Version 2 or 3 streams and log all contained</p>
     3267<ul class="simple">
    29203268<li>Numbers of incoming message types</li>
    29213269<li>Antenna Reference Point (ARP) coordinates</li>
    … …  
    29243272<li>Antenna descriptor.</li>
    29253273</ul>
    2926 In case of RTCM Version 3 streams the output includes
    2927 <ul>
     3274<p>In case of RTCM Version 3 streams the output includes</p>
     3275<ul class="simple">
    29283276<li>RINEX Version 3 Observation types</li>
    29293277</ul>
    2930 </p>
    2931 
    2932 <p>
    2933 Note that in RTCM Version 2 message types 18 and 19 carry only the observables of one frequency. Hence it needs two type 18 and 19 messages per epoch to transport observations from dual frequency receivers.
    2934 </p>
    2935 
    2936 <p>
    2937 Please note further that RTCM Version 3 message types 1084 for GLONASS do not contain GLONASS channel numbers. Observations from these messages can only be decoded when you include 1020 GLONASS ephemeris messages to your stream which contain the channels. You could also consider adding a second stream carrying 1087 GLONASS observation messages or 1020 GLONASS ephemeris messages as both contain the GLONASS channel numbers.
    2938 </p>
    2939 <p>
    2940 
    2941 <p>Logged time stamps refer to message reception time and allow understanding repetition rates. Enter 'ALL' if you want to log this information from all configured streams. Beware that the size of the logfile can rapidly increase depending on the number of incoming RTCM streams.
    2942 </p>
    2943 <p>This option is primarily meant for test and evaluation. Use it to figure out what exactly is produced by a specific GNSS receiver's configuration. An empty option field (default) means that you do not want BNC to print message type numbers and antenna information carried in RTCM streams.
    2944 </p>
    2945 
    2946 
    2947 <p><h4>2.12.4 <a name="miscport">Port - optional</h4></p>
    2948 <p>
    2949 BNC can output streams related to the above specified 'Mountpoint' through a TCP/IP port of your local host. Enter a port number to activate this function. The stream content remains untouched. BNC does not decode or reformat the data for this output.
    2950 </p>
    2951 <p>
    2952 Be careful when keyword 'ALL' is specified as 'Mountpoint' for involving all incoming streams together because the affiliation of data to certain streams gets lost in the output.
    2953 </p>
    2954 <p>
    2955  An empty option field (default) means that you do not want BNC to apply the TCP/IP port output option.
    2956 </p>
    2957 
    2958 
    2959 <p><h4>2.13 <a name="pppclient">PPP Client</h4></p>
    2960 <p>
    2961 BNC can derive coordinates for rover positions following the Precise Point Positioning (PPP) approach. It uses code or code plus phase data from one or more GNSS systems in ionosphere-free linear combinations P3, L3, or P3&L3. Besides pulling streams of observations from a dual frequency GNSS receiver, this
    2962 <ul>
    2963 <li>Requires pulling in addition a stream carrying satellite orbit and clock corrections to Broadcast Ephemeris in the form of RTCM Version 3 'State Space Representation' (SSR) messages. Note that for BNC these Broadcast Corrections need to be referred to the satellite's Antenna Phase Center (APC). Streams providing such messages are listed on <u>http://igs.bkg.bund.de/ntrip/orbits</u> (Caissy et al. 2012). Stream 'CLK11' on Ntrip Broadcaster 'products.igs-ip.net:2101' is an example.</li>
    2964 <li>May require pulling a stream carrying Broadcast Ephemeris available as RTCM Version 3 message types 1019, 1020, 1043, 1044, 1045, 1046 and 63 (tentative). This becomes a must only when the stream coming from the receiver does not contain Broadcast Ephemeris or provides them only at very low repetition rate. Streams providing such messages are listed on <u>http://igs.bkg.bund.de/ntrip/ephemeris</u>. Stream 'RTCM3EPH' on caster 'products.igs-ip.net:2101' is an example.</li>
    2965 </ul>
    2966 Note that Broadcast Ephemeris parameters pass a plausibility check in BNC which allows to ignore incorrect or outdated ephemeris data when necessary, leaving a note 'WRONG EPHEMERIS' or 'OUTDATED EPHEMERIS' in the logfile.
    2967 </p>
    2968 
    2969 <p>When using the PPP option, it is important to understand which effects are corrected by BNC.
    2970 </p>
    2971 <ul>
     3278<p>Note that in RTCM Version 2 message types 18 and 19 carry only the observables of one frequency. Hence it needs two type 18 and 19 messages per epoch to transport observations from dual frequency receivers.</p>
     3279<p>Please note further that RTCM Version 3 message types 1084 for GLONASS do not contain GLONASS channel numbers. Observations from these messages can only be decoded when you include 1020 GLONASS ephemeris messages to your stream which contain the channels. You could also consider adding a second stream carrying 1087 GLONASS observation messages or 1020 GLONASS ephemeris messages as both contain the GLONASS channel numbers.</p>
     3280<p>Logged time stamps refer to message reception time and allow understanding repetition rates. Enter &#8216;ALL&#8217; if you want to log this information from all configured streams. Beware that the size of the logfile can rapidly increase depending on the number of incoming RTCM streams.</p>
     3281<p>This option is primarily meant for test and evaluation. Use it to figure out what exactly is produced by a specific GNSS receiver&#8217;s configuration. An empty option field (default) means that you do not want BNC to print message type numbers and antenna information carried in RTCM streams.</p>
     3282</div>
     3283<div class="section" id="id8">
     3284<h4>Port - optional<a class="headerlink" href="#id8" title="Permalink to this headline">¶</a></h4>
     3285<p>BNC can output streams related to the above specified &#8216;Mountpoint&#8217; through a TCP/IP port of your local host. Enter a port number to activate this function. The stream content remains untouched. BNC does not decode or reformat the data for this output. Be careful when keyword &#8216;ALL&#8217; is specified as &#8216;Mountpoint&#8217; for involving all incoming streams together because the affiliation of data to certain streams gets lost in the output. An empty option field (default) means that you do not want BNC to apply the TCP/IP port output option.</p>
     3286</div>
     3287</div>
     3288<div class="section" id="ppp-client">
     3289<span id="index-25"></span><h3>PPP Client<a class="headerlink" href="#ppp-client" title="Permalink to this headline">¶</a></h3>
     3290<p>BNC can derive coordinates for rover positions following the Precise Point Positioning (PPP) approach. It uses code or code plus phase data from one or more GNSS systems in ionosphere-free linear combinations P3, L3, or P3&amp;L3. Besides pulling streams of observations from a dual frequency GNSS receiver, this</p>
     3291<ul class="simple">
     3292<li>Requires pulling in addition a stream carrying satellite orbit and clock corrections to Broadcast Ephemeris in the form of RTCM Version 3 &#8216;State Space Representation&#8217; (SSR) messages. Note that for BNC these Broadcast Corrections need to be referred to the satellite&#8217;s Antenna Phase Center (APC). Streams providing such messages are listed on (<a class="reference external" href="http://igs.bkg.bund.de/ntrip/orbits">http://igs.bkg.bund.de/ntrip/orbits</a>) <a class="reference internal" href="bnchelp.html#caissy2012a" id="id9">[8]</a>. Stream &#8216;CLK11&#8217; on Ntrip Broadcaster &#8216;products.igs-ip.net:2101&#8217; is an example.</li>
     3293<li>May require pulling a stream carrying Broadcast Ephemeris available as RTCM Version 3 message types 1019, 1020, 1043, 1044, 1045, 1046 and 63 (tentative). This becomes a must only when the stream coming from the receiver does not contain Broadcast Ephemeris or provides them only at very low repetition rate. Streams providing such messages are listed on <a class="reference external" href="http://igs.bkg.bund.de/ntrip/ephemeris">http://igs.bkg.bund.de/ntrip/ephemeris</a>. Stream &#8216;RTCM3EPH&#8217; on caster &#8216;products.igs-ip.net:2101&#8217; is an example.</li>
     3294</ul>
     3295<p>Note that Broadcast Ephemeris parameters pass a plausibility check in BNC which allows to ignore incorrect or outdated ephemeris data when necessary, leaving a note &#8216;WRONG EPHEMERIS&#8217; or &#8216;OUTDATED EPHEMERIS&#8217; in the logfile.</p>
     3296<p>When using the PPP option, it is important to understand which effects are corrected by BNC:</p>
     3297<ul class="simple">
    29723298<li>BNC does correct for Solid Earth Tides and Phase Windup.</li>
    29733299<li>Satellite Antenna Phase Center offsets are corrected.</li>
    29743300<li>Satellite Antenna Phase Center variations are neglected because this is a small effect usually less than 2 centimeters.</li>
    2975 <li>Observations can be corrected for a Receiver Antenna Offset and Receiver Antenna Phase Center Variation. Depending on whether or not these corrections are applied, the estimated position is either that of the receiver's Antenna Phase Center or that of the receiver's Antenna Reference Point.</li>
     3301<li>Observations can be corrected for a Receiver Antenna Offset and Receiver Antenna Phase Center Variation. Depending on whether or not these corrections are applied, the estimated position is either that of the receiver&#8217;s Antenna Phase Center or that of the receiver&#8217;s Antenna Reference Point.</li>
    29763302<li>Ocean and atmospheric loading is neglected. Atmospheric loading is pretty small. Ocean loading is usually also a small effect but may reach up to about 10 centimeters for coastal stations.</li>
    29773303<li>Rotational deformation due to polar motion (Polar Tides) is not corrected because this is a small effect usually less than 2 centimeters.</li>
    29783304</ul>
    2979 </p>
    2980 
    2981 <p>
    2982 The provider of an orbit/clock correction stream may switch with his service at any time from a duty to a backup server installation. This shall be noted in the SSR stream through a change of the Issue Of Data (IOD SSR) parameter. The PPP option in BNC will immediately reset all ambiguities in such a situation.
    2983 </p>
    2984 
    2985 <p>
    2986 PPP options are specified in BNC through the following four panels.
    2987 <ul>
     3305<p>The provider of an orbit/clock correction stream may switch with his service at any time from a duty to a backup server installation. This shall be noted in the SSR stream through a change of the Issue Of Data (IOD SSR) parameter. The PPP option in BNC will immediately reset all ambiguities in such a situation.</p>
     3306<p>PPP options are specified in BNC through the following four panels:</p>
     3307<ul class="simple">
    29883308<li>PPP (1): Input and output, specifying real-time or post processing mode and associated data sources</li>
    29893309<li>PPP (2): Processed stations, specifying sigmas and noise of a priori coordinates and NMEA stream output</li>
    … …  
    29913311<li>PPP (4): Plots, specifying visualization through time series and track maps</li>
    29923312</ul>
    2993 </p>
     3313<div class="section" id="ppp-1-input-and-output">
     3314<span id="index-26"></span><h4>PPP (1): Input and Output<a class="headerlink" href="#ppp-1-input-and-output" title="Permalink to this headline">¶</a></h4>
     3315<p>This panel provides options for specifying the input and output streams and files required by BNC for real-time or post processing PPP, see <a class="reference internal" href="#fig-22"><span class="std std-numref">Fig. 24</span></a> for an example screenshot.</p>
     3316<div class="figure" id="id45">
     3317<span id="fig-22"></span><a class="reference internal image-reference" href="_images/fig_22.png"><img alt="_images/fig_22.png" src="_images/fig_22.png" style="width: 1332.0px; height: 934.0px;" /></a>
     3318<p class="caption"><span class="caption-number">Fig. 24 </span><span class="caption-text">Real-time Precise Point Positioning with BNC, PPP Panel 1</span></p>
     3319</div>
     3320<div class="section" id="data-source-optional">
     3321<h5>Data Source - optional<a class="headerlink" href="#data-source-optional" title="Permalink to this headline">¶</a></h5>
     3322<p>Choose between input from &#8216;Real-time Streams&#8217; or &#8216;RINEX Files&#8217; for PPP with BNC in real-time or post processing mode.</p>
     3323<div class="section" id="real-time-streams">
     3324<h6>Real-time Streams<a class="headerlink" href="#real-time-streams" title="Permalink to this headline">¶</a></h6>
     3325<p>When choosing &#8216;Real-time Streams&#8217; BNC will do PPP solutions in real-time. This requires pulling GNSS observation streams, Broadcast Ephemeris messages and a stream containing corrections to Broadcast Ephemeris. Streams must come in RTCM Version 3 format. If you do not pull Broadcast Corrections, BNC will switch with its solution to &#8216;Single Point Positioning&#8217; (SPP) mode.</p>
     3326</div>
     3327<div class="section" id="rinex-files">
     3328<h6>RINEX Files<a class="headerlink" href="#rinex-files" title="Permalink to this headline">¶</a></h6>
     3329<p>This input mode allows to specify RINEX Observation, RINEX Navigation and Broadcast Correction files. BNC accepts RINEX Version 2 as well as RINEX Version 3 Observation or Navigation file formats. Files carrying Broadcast Corrections must have the format produced by BNC through the &#8216;Broadcast Corrections&#8217; panel. Specifying only a RINEX Observation and a RINEX Navigation file and no Broadcast Correction file leads BNC to a &#8216;Single Point Positioning&#8217; (SPP) solution.</p>
     3330</div>
     3331<div class="section" id="debugging">
     3332<h6>Debugging<a class="headerlink" href="#debugging" title="Permalink to this headline">¶</a></h6>
     3333<p>Note that for debugging purposes, BNC&#8217;s real-time PPP functionality can also be used offline. Apply the &#8216;File Mode&#8217; &#8216;Command Line&#8217; option for that to read a file containing synchronized observations, orbit and clock correctors, and Broadcast Ephemeris. Example:</p>
     3334<div class="highlight-bat"><div class="highlight"><pre>bnc.exe --conf c:\temp\PPP.bnc --file c:\temp\RAW
     3335</pre></div>
     3336</div>
     3337<p>Such a file (here: &#8216;RAW&#8217;) must be saved beforehand using BNC&#8217;s &#8216;Raw output file&#8217; option.</p>
     3338</div>
     3339</div>
     3340<div class="section" id="rinex-observation-file-mandatory-if-data-source-is-set-to-rinex-files">
     3341<h5>RINEX Observation File - mandatory if &#8216;Data source&#8217; is set to &#8216;RINEX Files&#8217;<a class="headerlink" href="#rinex-observation-file-mandatory-if-data-source-is-set-to-rinex-files" title="Permalink to this headline">¶</a></h5>
     3342<p>Specify a RINEX Observation file. The file format can be RINEX Version 2 or RINEX Version 3.</p>
     3343</div>
     3344<div class="section" id="rinex-navigation-file-mandatory-if-data-source-is-set-to-rinex-files">
     3345<h5>RINEX Navigation File - mandatory if &#8216;Data source&#8217; is set to &#8216;RINEX Files&#8217;<a class="headerlink" href="#rinex-navigation-file-mandatory-if-data-source-is-set-to-rinex-files" title="Permalink to this headline">¶</a></h5>
     3346<p>Specify a RINEX Navigation file. The file format can be RINEX Version 2 or RINEX Version 3.</p>
     3347</div>
     3348<div class="section" id="corrections-stream-optional-if-data-source-is-set-to-real-time-streams">
     3349<h5>Corrections Stream - optional if &#8216;Data source&#8217; is set to &#8216;Real-Time Streams&#8217;<a class="headerlink" href="#corrections-stream-optional-if-data-source-is-set-to-real-time-streams" title="Permalink to this headline">¶</a></h5>
     3350<p>Specify a Broadcast &#8216;Corrections stream&#8217; from the list of selected &#8216;Streams&#8217; you are pulling if you want BNC to correct your satellite ephemeris accordingly. Note that the stream&#8217;s orbit and clock corrections must refer to the satellite Antenna Phase Center (APC). Streams providing such corrections are made available e.g. through the International GNSS Service (IGS) and listed on <a class="reference external" href="http://igs.bkg.bund.de/ntrip/orbits">http://igs.bkg.bund.de/ntrip/orbits</a>. The stream format must be RTCM Version 3 containing so-called SSR messages. Streams &#8216;IGS03&#8217; and &#8216;CLK11&#8217; supporting GPS plus GLONASS are examples. If you do not specify a &#8216;Corrections stream&#8217;, BNC will fall back from a PPP solution to a Single Point Positioning (SPP) solution.</p>
     3351</div>
     3352<div class="section" id="corrections-file-optional-if-data-source-is-set-to-rinex-files">
     3353<h5>Corrections File - optional if &#8216;Data source&#8217; is set to &#8216;RINEX Files&#8217;<a class="headerlink" href="#corrections-file-optional-if-data-source-is-set-to-rinex-files" title="Permalink to this headline">¶</a></h5>
     3354<p>Specify a Broadcast &#8216;Corrections file&#8217; as saved beforehand using BNC. The file content is basically the ASCII representation of a RTCM Version 3 Broadcast Correction (SSR) stream. If you do not specify a &#8216;Correction file&#8217;, BNC will fall back from a PPP solution to a Single Point Positioning (SPP) solution.</p>
     3355</div>
     3356<div class="section" id="antex-file-optional">
     3357<h5>ANTEX File - optional<a class="headerlink" href="#antex-file-optional" title="Permalink to this headline">¶</a></h5>
     3358<p>IGS provides a file containing absolute phase center corrections for GNSS satellite and receiver antennas in ANTEX format. Entering the full path to such an ANTEX file is required for correcting observations in PPP for Antenna Phase Center offsets and variations. Note that for applying such corrections you need to specify the receiver&#8217;s antenna name and radome in BNC&#8217;s &#8216;Coordinates file&#8217;.</p>
     3359<p>Default value for &#8216;ANTEX file&#8217; is an empty option field, meaning that you do not want to correct observations for Antenna Phase Center offsets and variations.</p>
     3360</div>
     3361<div class="section" id="coordinates-file-optional">
     3362<h5>Coordinates File - optional<a class="headerlink" href="#coordinates-file-optional" title="Permalink to this headline">¶</a></h5>
     3363<p>Enter the full path to an ASCII file which specifies all observation streams or files from stationary or mobile receivers you possibly may want to process. Specifying a &#8216;Coordinates file&#8217; is optional. If it exists, it should contain one record per stream or file with the following parameters separated by blank characters:</p>
     3364<ul>
     3365<li><p class="first">Input data source, to be specified either through</p>
     3366<ul class="simple">
     3367<li>the &#8216;Mountpoint&#8217; of an RTCM stream (when in real-time PPP mode), or</li>
     3368<li>the first four characters of the RINEX observations file (when in post processing PPP mode).</li>
     3369</ul>
     3370<p>Having at least this first parameter in each record is mandatory.</p>
     3371</li>
     3372<li><p class="first">Only for static observations from a stationary receiver: Approximate a priori XYZ coordinate [m] of the station&#8217;s marker; specify &#8216;0.0 0.0 0.0&#8217; if unknown or when observations come from a mobile receiver.</p>
     3373</li>
     3374<li><p class="first">Nort, East and Up component [m] of antenna eccentricity which is the difference between Antenna Reference Point (ARP) and a nearby marker position; when specifying the antenna eccentricity BNC will produce coordinates referring to the marker position and not referring to ARP; specify &#8216;0.0 0.0 0.0&#8217; if eccentricity is unknown or the ARP itself is understood as the marker.</p>
     3375</li>
     3376</ul>
     3377<p>Receiver&#8217;s antenna name as defined in your ANTEX file (see below); Observations will be corrected for the Antenna Phase Center (APC) offsets and variations, which may result in a reduction of a few centimeters at max; the specified name must consist of 20 characters; add trailing blanks if the antenna name has less than 20 characters; examples:</p>
     3378<div class="highlight-console"><div class="highlight"><pre><span class="go">&#39;JPSREGANT_SD_E      &#39; (no radome)</span>
     3379<span class="go">&#39;LEIAT504        NONE&#39; (no radome)</span>
     3380<span class="go">&#39;LEIAR25.R3      LEIT&#39; (radome is LEIT)</span>
     3381</pre></div>
     3382</div>
     3383<p>Leave antenna name blank if you do not want to correct observations for APC offsets and variations or if you do not know the antenna name.
     3384* Receiver type following the naming convention for IGS equipment as defined in <a class="reference external" href="https://igscb.jpl.nasa.gov/igscb/station/general/rcvr_ant.tab">https://igscb.jpl.nasa.gov/igscb/station/general/rcvr_ant.tab</a>. Specifying the receiver type is only required when saving SINEX Troposphere files. In those files it becomes part of the &#8216;SITE/RECEIVER&#8217; specifications, see section &#8216;SNX TRO Directory&#8217;.</p>
     3385<p>Records in the &#8216;Coordinates&#8217; file with exclamation mark &#8216;!&#8217; in the first column or blank records will be understood as comment lines and ignored.</p>
     3386<p>The following is the content of an example &#8216;Coordinates file&#8217;. Here each record describes the mountpoint of a stream available from the global IGS real-time reference station network. A priori coordinates are followed by North/East/Up eccentricity components of the ARP followed by the antenna name, radome and the receiver name in use.</p>
     3387<div class="highlight-console"><div class="highlight"><pre><span class="go">!</span>
     3388<span class="go">! Station    X[m]          Y[m]          Z[m] North[m]  EAST[m]  UP[m]  Antenna        Radom Receiver</span>
     3389<span class="go">! -------------------------------------------------------------------------------- -------------------</span>
     3390<span class="go">ADIS0  4913652.6612  3945922.7678   995383.4359  0.0000  0.0000  0.0010 TRM29659.00     NONE JPS LEGACY</span>
     3391<span class="go">ALIC0 -4052052.5593  4212836.0078 -2545104.8289  0.0000  0.0000  0.0015 LEIAR25.R3      NONE LEICA GRX1200GGPRO</span>
     3392<span class="go">BELF0  3685257.8823  -382908.8992  5174311.1067  0.0000  0.0000  0.0000 LEIAT504GG      LEIS LEICA GRX1200GGPRO</span>
     3393<span class="go">BNDY0 -5125977.4106  2688801.2966 -2669890.4345  0.0000  0.0000  0.0000 ASH701945E_M    NONE TRIMBLE NETR5</span>
     3394<span class="go">BRAZ0  4115014.0678 -4550641.6105 -1741443.8244  0.0000  0.0000  0.0080 LEIAR10         NONE LEICA GR25</span>
     3395<span class="go">CTWN0  5023564.4285  1677795.7211 -3542025.8392  0.0000  0.0000  0.0000 ASH701941.B     NONE TRIMBLE NETR5</span>
     3396<span class="go">CUT07 -2364337.4408  4870285.6055 -3360809.6280  0.0000  0.0000  0.0000 TRM59800.00     SCIS TRIMBLE NETR9</span>
     3397<span class="go">GANP0  3929181.3480  1455236.9105  4793653.9880  0.0000  0.0000  0.3830 TRM55971.00     NONE TRIMBLE NETR9</span>
     3398<span class="go">HLFX0  2018905.6037 -4069070.5095  4462415.4771  0.0000  0.0000  0.1000 TPSCR.G3        NONE TPS NET-G3A</span>
     3399<span class="go">LHAZ0  -106941.9272  5549269.8041  3139215.1564  0.0000  0.0000  0.1330 ASH701941.B     NONE TPS E_GGD</span>
     3400<span class="go">LMMF7  2993387.3587 -5399363.8649  1596748.0983  0.0000  0.0000  0.0000 TRM57971.00     NONE TRIMBLE NETR9</span>
     3401<span class="go">MAO07 -5466067.0979 -2404333.0198  2242123.1929  0.0000  0.0000  0.0000 LEIAR25.R3      LEIT JAVAD TRE_G3TH DELTA</span>
     3402<span class="go">NICO0  4359415.5252  2874117.1872  3650777.9614  0.0000  0.0000  0.0650 LEIAR25.R4      LEIT LEICA GR25</span>
     3403<span class="go">NKLG7  6287385.7320  1071574.7606    39133.1088 -0.0015 -0.0025  3.0430 TRM59800.00     SCIS TRIMBLE NETR9</span>
     3404<span class="go">NURK7  5516756.5103  3196624.9684  -215027.1315  0.0000  0.0000  0.1300 TPSCR3_GGD      NONE JAVAD TRE_G3TH DELTA</span>
     3405<span class="go">ONSA0  3370658.3928   711877.2903  5349787.0603  0.0000  0.0000  0.9950 AOAD/M_B        OSOD JAVAD TRE_G3TH DELTA</span>
     3406<span class="go">PDEL0  4551595.9072 -2186892.9495  3883410.9685  0.0000  0.0000  0.0000 LEIAT504GG      NONE LEICA GRX1200GGPRO</span>
     3407<span class="go">RCMN0  5101056.6270  3829074.4206  -135016.1589  0.0000  0.0000  0.0000 LEIAT504GG      LEIS LEICA GRX1200GGPRO</span>
     3408<span class="go">REUN0  3364098.9668  4907944.6121 -2293466.7379  0.0000  0.0000  0.0610 TRM55971.00     NONE TRIMBLE NETR9</span>
     3409<span class="go">REYK7  2587384.0890 -1043033.5433  5716564.1301  0.0000  0.0000  0.0570 LEIAR25.R4      LEIT LEICA GR25</span>
     3410<span class="go">RIO27  1429907.8578 -3495354.8953 -5122698.5595  0.0000  0.0000  0.0350 ASH700936C_M    SNOW JAVAD TRE_G3TH DELTA</span>
     3411<span class="go">SMR50   927077.1096 -2195043.5597 -5896521.1344  0.0000  0.0000  0.0000 TRM41249.00     TZGD TRIMBLE NETR5</span>
     3412<span class="go">SUWN0 -3062023.1604  4055447.8946  3841818.1684  0.0000  0.0000  1.5700 TRM29659.00     DOME TRIMBLE NETR9</span>
     3413<span class="go">TASH7  1695944.9208  4487138.6220  4190140.7391  0.0000  0.0000  0.1206 JAV_RINGANT_G3T NONE JAVAD TRE_G3TH DELTA</span>
     3414<span class="go">UFPR0  3763751.6731 -4365113.9039 -2724404.5331  0.0000  0.0000  0.1000 TRM55971.00     NONE TRIMBLE NETR5</span>
     3415<span class="go">UNB30  1761287.9724 -4078238.5659  4561417.8448  0.0000  0.0000  0.3145 TRM57971.00     NONE TRIMBLE NETR9</span>
     3416<span class="go">WIND7  5633708.8016  1732017.9297 -2433985.5795  0.0000  0.0000  0.0460 ASH700936C_M    SNOW JAVAD TRE_G3TH DELTA</span>
     3417<span class="go">WTZR0  4075580.3797   931853.9767  4801568.2360  0.0000  0.0000  0.0710 LEIAR25.R3      LEIT LEICA GR25</span>
     3418<span class="go">WUH27 -2267749.9761  5009154.5504  3221294.4429  0.0000  0.0000  0.1206 JAV_RINGANT_G3T NONE JAVAD TRE_G3TH DELTA</span>
     3419<span class="go">YELL7 -1224452.8796 -2689216.1863  5633638.2832  0.0000  0.0000  0.1000 AOAD/M_T        NONE JAVAD TRE_G3TH DELTA</span>
     3420</pre></div>
     3421</div>
     3422<p>Note again that the only mandatory parameters in this file are the &#8216;Station&#8217; parameters in the first column, each standing for an observation stream&#8217;s mountpoint or the 4-character station ID of a RINEX filename. The following shows further valid examples for records of a &#8216;Coordinates file&#8217;.</p>
     3423<div class="highlight-console"><div class="highlight"><pre><span class="go">!</span>
     3424<span class="go">! Station     X[m]         Y[m]          Z[m]    N[m]   E[m]   U[m]  Antenna        Radom Receiver</span>
     3425<span class="go">! --------------------------------------------------------------------------------- ----------------</span>
     3426<span class="go">WTZR0   4075580.3797  931853.9767  4801568.2360  0.000  0.000  0.071 LEIAR25.R3      LEIT LEICA GR25</span>
     3427<span class="go">CUT07  -2364337.4408 4870285.6055 -3360809.6280  0.000  0.000  0.000 TRM59800.00     SCIS</span>
     3428<span class="go">FFMJ1   4053455.7384  617729.8393  4869395.8214  0.000  0.000  0.045</span>
     3429<span class="go">TITZ1   3993780.4501  450206.8969  4936136.9886</span>
     3430<span class="go">WARN</span>
     3431<span class="go">SASS1         0.0          0.0           0.0     0.000  0.000  0.031 TPSCR3_GGD      CONE TRIMBLE NETR5</span>
     3432</pre></div>
     3433</div>
     3434<p>In this file</p>
     3435<ul class="simple">
     3436<li>Record &#8216;WTZR0&#8217; describes a stream from a stationary receiver with known a priori marker coordinate, antenna eccentricity, antenna and radome type and receiver type.</li>
     3437<li>Record &#8216;CUT07&#8217; describes a stream from a stationary receiver with known a priori marker coordinate, antenna eccentricity and antenna and radome type. The receiver type is unknown.</li>
     3438<li>Record &#8216;FFMJ1&#8217; describes a stream from a stationary receiver with known a priori marker coordinate and antenna eccentricity but unknown antenna, radome and receiver type.</li>
     3439<li>Record &#8216;TITZ1&#8217; describes a stream coming from a stationary receiver where an a priori marker coordinate is known but antenna eccentricity, name and radome and receiver type are unknown.</li>
     3440<li>The 4-character station ID &#8216;WARN&#8217; indicates that a RINEX observations file for post processing PPP is available for station &#8216;WARN&#8217; but an a priori marker coordinate as well as antenna eccentricity, name and radome are unknown.</li>
     3441<li>Record &#8216;SASS1&#8217; stands for a mountpoint where the stream comes from a mobile rover receiver. Hence an a priori coordinate is unknown although antenna eccentricity, name and radome and receiver type are known.</li>
     3442</ul>
     3443</div>
     3444<div class="section" id="id10">
     3445<h5>Version 3 Filenames - optional<a class="headerlink" href="#id10" title="Permalink to this headline">¶</a></h5>
     3446<p>Tick &#8216;Version 3 filenames&#8217; to let BNC create so-called extended filenames for PPP logfiles, NMEA files and SINEX Troposphere files to follow the RINEX Version 3 standard, see section &#8216;RINEX Filenames&#8217; for details. Default is an empty check box, meaning to create filenames following the RINEX Version 2 standard. The file content is not affected by this option. It only concerns the filename notation. <a class="reference internal" href="#tab-rinex2-filenames"><span class="std std-numref">Table 8</span></a> and <a class="reference internal" href="#tab-rinex3-filenames"><span class="std std-numref">Table 9</span></a> give filename examples for RINEX version 2 and 3, respectively.</p>
     3447<table border="1" class="docutils" id="id46">
     3448<span id="tab-rinex2-filenames"></span><caption><span class="caption-number">Table 8 </span><span class="caption-text">File name examples vor RINEX version 2.</span><a class="headerlink" href="#id46" title="Permalink to this table">¶</a></caption>
     3449<colgroup>
     3450<col width="29%" />
     3451<col width="71%" />
     3452</colgroup>
     3453<thead valign="bottom">
     3454<tr class="row-odd"><th class="head"><strong>Filename</strong></th>
     3455<th class="head"><strong>Description</strong></th>
     3456</tr>
     3457</thead>
     3458<tbody valign="top">
     3459<tr class="row-even"><td>CUT018671.nmea</td>
     3460<td>NMEA filename, suffix &#8216;nmea&#8217;</td>
     3461</tr>
     3462<tr class="row-odd"><td>CUT018671.ppp</td>
     3463<td>PPP logfile name, suffix &#8216;ppp&#8217;</td>
     3464</tr>
     3465<tr class="row-even"><td>CUT018671J30.tro</td>
     3466<td>SINEX Troposphere filename, suffix &#8216;tro&#8217;</td>
     3467</tr>
     3468</tbody>
     3469</table>
     3470<table border="1" class="docutils" id="id47">
     3471<span id="tab-rinex3-filenames"></span><caption><span class="caption-number">Table 9 </span><span class="caption-text">File name examples vor RINEX version 3.</span><a class="headerlink" href="#id47" title="Permalink to this table">¶</a></caption>
     3472<colgroup>
     3473<col width="47%" />
     3474<col width="53%" />
     3475</colgroup>
     3476<thead valign="bottom">
     3477<tr class="row-odd"><th class="head"><strong>Filename</strong></th>
     3478<th class="head"><strong>Description</strong></th>
     3479</tr>
     3480</thead>
     3481<tbody valign="top">
     3482<tr class="row-even"><td>CUT000AUS_U_20152920000_01D_01S.nmea</td>
     3483<td>NMEA filename, suffix &#8216;nmea&#8217;</td>
     3484</tr>
     3485<tr class="row-odd"><td>CUT000AUS_U_20152920000_01D_01S.ppp</td>
     3486<td>PPP logfile name, suffix &#8216;ppp&#8217;</td>
     3487</tr>
     3488<tr class="row-even"><td>CUT000AUS_U_20152920945_15M_01S.tra</td>
     3489<td>SINEX Troposphere filename, suffix &#8216;tra&#8217;</td>
     3490</tr>
     3491</tbody>
     3492</table>
     3493</div>
     3494<div class="section" id="logfile-directory-optional">
     3495<span id="index-27"></span><h5>Logfile Directory - optional<a class="headerlink" href="#logfile-directory-optional" title="Permalink to this headline">¶</a></h5>
     3496<p>Essential PPP results are shown in the &#8216;Log&#8217; tab on the bottom of BNC&#8217;s main window. Depending on the processing options, the following values are presented about once per second (example):</p>
     3497<div class="highlight-console"><div class="highlight"><pre><span class="go">...</span>
     3498<span class="go">15-10-21 13:23:38 2015-10-21_13:23:38.000 CUT07 X = -2364337.4505 Y = 4870285.6269 Z = -3360809.6481 NEU:  -0.0046  -0.0006  +0.0306 TRP:  +2.4018  +0.1006</span>
     3499<span class="go">15-10-21 13:23:39 2015-10-21_13:23:39.000 CUT07 X = -2364337.4468 Y = 4870285.6244 Z = -3360809.6453 NEU:  -0.0043  -0.0029  +0.0258 TRP:  +2.4018  +0.0993</span>
     3500<span class="go">15-10-21 13:23:40 2015-10-21_13:23:40.000 CUT07 X = -2364337.4455 Y = 4870285.6215 Z = -3360809.6466 NEU:  -0.0070  -0.0027  +0.0238 TRP:  +2.4018  +0.0978</span>
     3501<span class="go">15-10-21 13:23:41 2015-10-21_13:23:41.000 CUT07 X = -2364337.4447 Y = 4870285.6248 Z = -3360809.6445 NEU:  -0.0039  -0.0049  +0.0249 TRP:  +2.4018  +0.0962</span>
     3502<span class="go">15-10-21 13:23:42 2015-10-21_13:23:42.000 CUT07 X = -2364337.4426 Y = 4870285.6238 Z = -3360809.6424 NEU:  -0.0031  -0.0063  +0.0223 TRP:  +2.4018  +0.0950</span>
     3503<span class="go">15-10-21 13:23:43 2015-10-21_13:23:43.000 CUT07 X = -2364337.4453 Y = 4870285.6386 Z = -3360809.6518 NEU:  -0.0033  -0.0104  +0.0395 TRP:  +2.4018  +0.0927</span>
     3504<span class="go">15-10-21 13:23:44 2015-10-21_13:23:44.000 CUT07 X = -2364337.4435 Y = 4870285.6354 Z = -3360809.6487 NEU:  -0.0027  -0.0106  +0.0348 TRP:  +2.4018  +0.0908</span>
     3505<span class="go">15-10-21 13:23:45 2015-10-21_13:23:45.000 CUT07 X = -2364337.4445 Y = 4870285.6381 Z = -3360809.6532 NEU:  -0.0049  -0.0109  +0.0396 TRP:  +2.4018  +0.0884</span>
     3506<span class="go">15-10-21 13:23:46 2015-10-21_13:23:46.000 CUT07 X = -2364337.4437 Y = 4870285.6365 Z = -3360809.6548 NEU:  -0.0073  -0.0109  +0.0389 TRP:  +2.4018  +0.0855</span>
     3507<span class="go">15-10-21 13:23:47 2015-10-21_13:23:47.000 CUT07 X = -2364337.4498 Y = 4870285.6317 Z = -3360809.6395 NEU:  +0.0049  -0.0033  +0.0294 TRP:  +2.4018  +0.0833</span>
     3508<span class="go">...</span>
     3509</pre></div>
     3510</div>
     3511<p>Each row reports the PPP result of one epoch. It begins with a UTC time stamp (yy-mm-dd hh:mm:ss) which tells us when the result was produced. A second time stamp (yyyy-mm-dd_hh:mm:ss) describes the PPP&#8217;s epoch in &#8216;GPS Time&#8217;. It is followed by the derived XYZ position in [m], its North, East and Up displacement compared to an introduced a priori coordinate, and the estimated tropospheric delay [m] (model plus correction). If you require more information, you can specify a &#8216;Logfile directory&#8217; to save daily logfiles per station (filename suffix &#8216;ppp&#8217;) with additional processing details on disk:</p>
     3512<div class="highlight-console"><div class="highlight"><pre><span class="go">Precise Point Positioning of Epoch 2015-10-21_13:23:47.000</span>
     3513<span class="go">---------------------------------------------------------------</span>
     3514<span class="go">2015-10-21_13:23:47.000 SATNUM G  9</span>
     3515<span class="go">2015-10-21_13:23:47.000 SATNUM R  6</span>
     3516<span class="go">2015-10-21_13:23:47.000 SATNUM E  0</span>
     3517<span class="go">2015-10-21_13:23:47.000 SATNUM C  9</span>
     3518<span class="go">2015-10-21_13:23:47.000 RES C01   P3    0.3201</span>
     3519<span class="go">2015-10-21_13:23:47.000 RES C02   P3    0.3597</span>
     3520<span class="go">2015-10-21_13:23:47.000 RES C03   P3   -0.8003</span>
     3521<span class="go">2015-10-21_13:23:47.000 RES C04   P3    2.7684</span>
     3522<span class="go">2015-10-21_13:23:47.000 RES C05   P3    4.9738</span>
     3523<span class="go">2015-10-21_13:23:47.000 RES C06   P3    0.1888</span>
     3524<span class="go">2015-10-21_13:23:47.000 RES C07   P3   -2.8624</span>
     3525<span class="go">2015-10-21_13:23:47.000 RES C08   P3   -2.9075</span>
     3526<span class="go">2015-10-21_13:23:47.000 RES C10   P3   -1.5682</span>
     3527<span class="go">2015-10-21_13:23:47.000 RES G05   P3    0.3828</span>
     3528<span class="go">2015-10-21_13:23:47.000 RES G16   P3   -3.7602</span>
     3529<span class="go">2015-10-21_13:23:47.000 RES G18   P3    0.8424</span>
     3530<span class="go">2015-10-21_13:23:47.000 RES G20   P3    0.4062</span>
     3531<span class="go">2015-10-21_13:23:47.000 RES G21   P3    0.8683</span>
     3532<span class="go">2015-10-21_13:23:47.000 RES G25   P3   -1.3367</span>
     3533<span class="go">2015-10-21_13:23:47.000 RES G26   P3    1.4107</span>
     3534<span class="go">2015-10-21_13:23:47.000 RES G29   P3    1.1870</span>
     3535<span class="go">2015-10-21_13:23:47.000 RES G31   P3   -0.5605</span>
     3536<span class="go">2015-10-21_13:23:47.000 RES R01   P3   -0.1458</span>
     3537<span class="go">2015-10-21_13:23:47.000 RES R02   P3   -2.1184</span>
     3538<span class="go">2015-10-21_13:23:47.000 RES R14   P3    1.8634</span>
     3539<span class="go">2015-10-21_13:23:47.000 RES R15   P3   -1.3964</span>
     3540<span class="go">2015-10-21_13:23:47.000 RES R18   P3    0.5517</span>
     3541<span class="go">2015-10-21_13:23:47.000 RES R24   P3    1.5750</span>
     3542<span class="go">2015-10-21_13:23:47.000 RES C01   L3   -0.0040</span>
     3543<span class="go">2015-10-21_13:23:47.000 RES C02   L3    0.0070</span>
     3544<span class="go">2015-10-21_13:23:47.000 RES C03   L3    0.0093</span>
     3545<span class="go">2015-10-21_13:23:47.000 RES C04   L3   -0.0017</span>
     3546<span class="go">2015-10-21_13:23:47.000 RES C05   L3   -0.0008</span>
     3547<span class="go">2015-10-21_13:23:47.000 RES C06   L3   -0.0031</span>
     3548<span class="go">2015-10-21_13:23:47.000 RES C07   L3   -0.0016</span>
     3549<span class="go">2015-10-21_13:23:47.000 RES C08   L3   -0.0089</span>
     3550<span class="go">2015-10-21_13:23:47.000 RES C10   L3    0.0051</span>
     3551<span class="go">2015-10-21_13:23:47.000 RES G05   L3   -0.0408</span>
     3552<span class="go">2015-10-21_13:23:47.000 RES G16   L3    0.0043</span>
     3553<span class="go">2015-10-21_13:23:47.000 RES G18   L3    0.0017</span>
     3554<span class="go">2015-10-21_13:23:47.000 RES G20   L3   -0.0132</span>
     3555<span class="go">2015-10-21_13:23:47.000 RES G21   L3    0.0188</span>
     3556<span class="go">2015-10-21_13:23:47.000 RES G25   L3   -0.0059</span>
     3557<span class="go">2015-10-21_13:23:47.000 RES G26   L3    0.0028</span>
     3558<span class="go">2015-10-21_13:23:47.000 RES G29   L3    0.0062</span>
     3559<span class="go">2015-10-21_13:23:47.000 RES G31   L3    0.0012</span>
     3560<span class="go">2015-10-21_13:23:47.000 RES R01   L3    0.0260</span>
     3561<span class="go">2015-10-21_13:23:47.000 RES R02   L3   -0.0121</span>
     3562<span class="go">2015-10-21_13:23:47.000 RES R14   L3    0.0055</span>
     3563<span class="go">2015-10-21_13:23:47.000 RES R15   L3   -0.0488</span>
     3564<span class="go">2015-10-21_13:23:47.000 RES R18   L3    0.0475</span>
     3565<span class="go">2015-10-21_13:23:47.000 RES R24   L3    0.0103</span>
    29943566
    2995 <p><h4>2.13.1 <a name="pppInp">PPP (1): Input and Output</h4></p>
    2996 <p>
    2997 This panel provides options for specifying the input and output streams and files required by BNC for real-time or post processing PPP.
    2998 </p>
     3567<span class="go">2015-10-21_13:23:47.000 CLK      45386.971 +-  0.163</span>
     3568<span class="go">2015-10-21_13:23:47.000 TRP       2.402 +0.083 +-  0.013</span>
     3569<span class="go">2015-10-21_13:23:47.000 OFFGLO       1.766 +-  0.250</span>
     3570<span class="go">2015-10-21_13:23:47.000 OFFGAL       0.000 +- 1000.001</span>
     3571<span class="go">2015-10-21_13:23:47.000 OFFBDS      29.385 +-  0.218</span>
     3572<span class="go">2015-10-21_13:23:47.000 AMB C01    239.913 +-  0.149   epo = 180</span>
     3573<span class="go">2015-10-21_13:23:47.000 AMB C04    151.821 +-  0.149   epo = 180</span>
     3574<span class="go">2015-10-21_13:23:47.000 AMB C05    137.814 +-  0.150   epo = 180</span>
     3575<span class="go">2015-10-21_13:23:47.000 AMB C06   -368.848 +-  0.149   epo = 180</span>
     3576<span class="go">2015-10-21_13:23:47.000 AMB C07   -102.508 +-  0.149   epo = 180</span>
     3577<span class="go">2015-10-21_13:23:47.000 AMB C08   -145.358 +-  0.150   epo = 180</span>
     3578<span class="go">2015-10-21_13:23:47.000 AMB C10    195.732 +-  0.149   epo = 180</span>
     3579<span class="go">2015-10-21_13:23:47.000 AMB G25     58.320 +-  0.159   epo = 180</span>
     3580<span class="go">2015-10-21_13:23:47.000 AMB G26    110.077 +-  0.159   epo = 180</span>
     3581<span class="go">2015-10-21_13:23:47.000 AMB G29   -555.466 +-  0.159   epo = 180</span>
     3582<span class="go">2015-10-21_13:23:47.000 AMB G31    -47.938 +-  0.159   epo = 180</span>
     3583<span class="go">2015-10-21_13:23:47.000 AMB R01   -106.913 +-  0.193   epo = 180</span>
     3584<span class="go">2015-10-21_13:23:47.000 AMB R02    168.316 +-  0.194   epo = 180</span>
     3585<span class="go">2015-10-21_13:23:47.000 AMB R24    189.793 +-  0.193   epo = 180</span>
     3586<span class="go">2015-10-21_13:23:47.000 AMB C02    -50.146 +-  0.149   epo = 175</span>
     3587<span class="go">2015-10-21_13:23:47.000 AMB G05   -185.211 +-  0.173   epo = 175</span>
     3588<span class="go">2015-10-21_13:23:47.000 AMB R14   -509.359 +-  0.194   epo = 175</span>
     3589<span class="go">2015-10-21_13:23:47.000 AMB R15     65.355 +-  0.194   epo = 175</span>
     3590<span class="go">2015-10-21_13:23:47.000 AMB R18   -105.206 +-  0.204   epo = 170</span>
     3591<span class="go">2015-10-21_13:23:47.000 AMB G16    215.751 +-  0.160   epo = 165</span>
     3592<span class="go">2015-10-21_13:23:47.000 AMB G18   -168.240 +-  0.159   epo = 165</span>
     3593<span class="go">2015-10-21_13:23:47.000 AMB G20   -284.129 +-  0.159   epo = 165</span>
     3594<span class="go">2015-10-21_13:23:47.000 AMB G21    -99.245 +-  0.159   epo = 165</span>
     3595<span class="go">2015-10-21_13:23:47.000 AMB C03   -117.727 +-  0.149   epo = 30</span>
    29993596
    3000 <p><img src="IMG/screenshot03.png"/></p>
    3001 <p><u>Figure 22:</u> Real-time Precise Point Positioning with BNC, PPP Panel 1</p>
    3002 
    3003 <p><h4>2.13.1.1 <a name="pppdatasource">Data Source - optional</h4></p>
    3004 <p>
    3005 Choose between input from 'Real-time Streams' or 'RINEX Files' for PPP with BNC in real-time or post processing mode.
    3006 </p>
    3007 
    3008 <p>
    3009 <u>Real-time Streams</u><br>
    3010 When choosing 'Real-time Streams' BNC will do PPP solutions in real-time. This requires pulling GNSS observation streams, Broadcast Ephemeris messages and a stream containing corrections to Broadcast Ephemeris. Streams must come in RTCM Version 2 or RTCM Version 3 format.
    3011 </p>
    3012 <p>
    3013 If you do not pull Broadcast Corrections, BNC will switch with its solution to 'Single Point Positioning' (SPP) mode.
    3014 </p>
    3015 
    3016 <p>
    3017 <u>RINEX Files</u><br>
    3018 This input mode allows to specify RINEX Observation, RINEX Navigation and Broadcast Correction files. BNC accepts RINEX Version 2 as well as RINEX Version 3 Observation or Navigation file formats. Files carrying Broadcast Corrections must have the format produced by BNC through the 'Broadcast Corrections' panel.
    3019 </p>
    3020 <p>
    3021 Specifying only a RINEX Observation and a RINEX Navigation file and no Broadcast Correction file leads BNC to a 'Single Point Positioning' (SPP) solution.
    3022 <p>
    3023 <u>Debugging</u><br>
    3024 Note that for debugging purposes, BNC's real-time PPP functionality can also be used offline. Apply the 'File Mode' 'Command Line' option for that to read a file containing synchronized observations, orbit and clock correctors, and Broadcast Ephemeris. Example:
    3025 <pre>
    3026    bnc.exe --conf c:\temp\PPP.bnc --file c:\temp\RAW
    3027 </pre>
    3028 Such a file (here: 'RAW') must be saved beforehand using BNC's 'Raw output file' option.
     3597<span class="go">2015-10-21_13:23:47.000 CUT07 X = -2364337.4498 +- 0.0279 Y = 4870285.6317 +- 0.0388 Z = -3360809.6395 +- 0.0313 dN = 0.0049 +- 0.0248 dE = -0.0033 +- 0.0239 dU = 0.0294 +- 0.0456</span>
     3598</pre></div>
     3599</div>
     3600<p>Depending on selected processing options you find &#8216;GPS Time&#8217; stamps (yyyy-mm-dd_hh:mm:ss.sss) followed by</p>
     3601<ul>
     3602<li><p class="first">SATNUM: Number of satellites per GNSS,</p>
    30293603</li>
    3030 </ul>
    3031 </p>
    3032 
    3033 <p><h4>2.13.1.2 <a name="ppprnxobs">RINEX Observation File - mandatory if 'Data source' is set to 'RINEX Files'</h4></p>
    3034 <p>
    3035 Specify a RINEX Observation file. The file format can be RINEX Version 2 or RINEX Version 3.
    3036 </p>
    3037 
    3038 <p><h4>2.13.1.3 <a name="ppprnxnav">RINEX Navigation File - mandatory if 'Data source' is set to 'RINEX Files'</h4></p>
    3039 <p>
    3040 Specify a RINEX Navigation file. The file format can be RINEX Version 2 or RINEX Version 3.
    3041 </p>
    3042 
    3043 <p><h4>2.13.1.4 <a name="pppcorrstream">Corrections Stream - optional if 'Data source' is set to 'Real-Time Streams'</h4></p>
    3044 <p>
    3045 Specify a Broadcast 'Corrections stream' from the list of selected 'Streams' you are pulling if you want BNC to correct your satellite ephemeris accordingly. Note that the stream's orbit and clock corrections must refer to the satellite Antenna Phase Center (APC). Streams providing such corrections are made available e.g. through the International GNSS Service (IGS) and listed on <u>http://igs.bkg.bund.de/ntrip/orbits</u>. The stream format must be RTCM Version 3 containing so-called SSR messages. Streams 'IGS03' and 'CLK11' supporting GPS plus GLONASS are examples.
    3046 </p>
    3047 <p>
    3048 If you do not specify a 'Corrections stream', BNC will fall back from a PPP solution to a Single Point Positioning (SPP) solution.
    3049 </p>
    3050 
    3051 <p><h4>2.13.1.5 <a name="pppcorrfile">Corrections File - optional if 'Data source' is set to 'RINEX Files'</h4></p>
    3052 <p>
    3053 Specify a Broadcast 'Corrections file' as saved beforehand using BNC. The file content is basically the ASCII representation of a RTCM Version 3 Broadcast Correction (SSR) stream.
    3054 </p>
    3055 <p>
    3056 If you do not specify a 'Correction file', BNC will fall back from a PPP solution to a Single Point Positioning (SPP) solution.
    3057 </p>
    3058 
    3059 <p><h4>2.13.1.6 <a name="pppantexfile">ANTEX File - optional</h4></p>
    3060 <p>
    3061 IGS provides a file containing absolute phase center corrections for GNSS satellite and receiver antennas in ANTEX format. Entering the full path to such an ANTEX file is required for correcting observations in PPP for Antenna Phase Center offsets and variations. Note that for applying such corrections you need to specify the receiver's antenna name and radome in BNC's 'Coordinates file'.
    3062 </p>
    3063 <p>
    3064 Default value for 'ANTEX file' is an empty option field, meaning that you do not want to correct observations for Antenna Phase Center offsets and variations.
    3065 </p>
    3066 
    3067 <p><h4>2.13.1.7 <a name="pppmarkcoor">Coordinates File - optional </h4></p>
    3068 <p>
    3069 Enter the full path to an ASCII file which specifies all observation streams or files from stationary or mobile receivers you possibly may want to process. Specifying a 'Coordinates file' is optional. If it exists, it should contain one record per stream or file with the following parameters separated by blank characters:
    3070 </p>
    3071 <p>
    3072 <ul>
    3073 <li>Input data source, to be specified either through
    3074 <ul>
    3075 <li>the 'Mountpoint' of an RTCM stream (when in real-time PPP mode), or
     3604<li><p class="first">RES: Code and phase residuals for contributing GNSS systems in [m]</p>
     3605<p>Given per satellite with cIF/lIF for ionosphere-free linear combination of code/phase observations,</p>
    30763606</li>
    3077 <li>the first four characters of the RINEX observations file (when in post processing PPP mode).</li>
    3078 </ul>
    3079 Having at least this first parameter in each record is mandatory.</li><br>
    3080 <li>Only for static observations from a stationary receiver:<br>Approximate a priori XYZ coordinate [m] of the station's marker; specify '0.0 0.0 0.0' if unknown or when observations come from a mobile receiver.</li><br>
    3081 <li>Nort, East and Up component [m] of antenna eccentricity which is the difference between Antenna Reference Point (ARP) and a nearby marker position; when specifying the antenna eccentricity BNC will produce coordinates referring to the marker position and not referring to ARP; specify '0.0 0.0 0.0' if eccentricity is unknown or the ARP itself is understood as the marker.</li><br>
    3082 <li>Receiver's antenna name as defined in your ANTEX file (see below); Observations will be corrected for the Antenna Phase Center (APC) offsets and variations, which may result in a reduction of a few centimeters at max; the specified name must consist of 20 characters; add trailing blanks if the antenna name has less than 20 characters; examples:<br><pre>
    3083 &nbsp; &nbsp;'JPSREGANT_SD_E      ' (no radome)
    3084 &nbsp; &nbsp;'LEIAT504        NONE' (no radome)
    3085 &nbsp; &nbsp;'LEIAR25.R3      LEIT' (radome is LEIT)</pre>
    3086 Leave antenna name blank if you do not want to correct observations for APC offsets and variations or if you do not know the antenna name.</li><br>
    3087 <li>
    3088 Receiver type following the naming convention for IGS equipment as defined in <u>https://igscb.jpl.nasa.gov/igscb/station/general/rcvr_ant.tab</u>. Specifying the receiver type is only required when saving SINEX Troposphere files. In those files it becomes part of the 'SITE/RECEIVER' specifications, see section 'SNX TRO Directory'.
     3607<li><p class="first">CLK: Receiver clock errors in [m],</p>
    30893608</li>
    3090 </ul>
    3091 </p>
    3092 <p>
    3093 Records in the 'Coordinates' file with exclamation mark '!' in the first column or blank records will be understood as comment lines and ignored.
    3094 </p>
    3095 <p>
    3096 The following is the content of an example 'Coordinates file'. Here each record describes the mountpoint of a stream available from the global IGS real-time reference station network. A priori coordinates are followed by North/East/Up eccentricity components of the ARP
    3097 followed by the antenna name and radome in use.
    3098 </p>
    3099 <pre>
    3100 !
    3101 ! Station    X[m]          Y[m]          Z[m] North[m]  EAST[m]  UP[m]  Antenna--------Radom Receiver
    3102 ! -----------------------------------------------------------------------------------------------------
    3103 ADIS0  4913652.6612  3945922.7678   995383.4359  0.0000  0.0000  0.0010 TRM29659.00     NONE JPS LEGACY
    3104 ALIC0 -4052052.5593  4212836.0078 -2545104.8289  0.0000  0.0000  0.0015 LEIAR25.R3      NONE LEICA GRX1200GGPRO
    3105 BELF0  3685257.8823  -382908.8992  5174311.1067  0.0000  0.0000  0.0000 LEIAT504GG      LEIS LEICA GRX1200GGPRO
    3106 BNDY0 -5125977.4106  2688801.2966 -2669890.4345  0.0000  0.0000  0.0000 ASH701945E_M    NONE TRIMBLE NETR5
    3107 BRAZ0  4115014.0678 -4550641.6105 -1741443.8244  0.0000  0.0000  0.0080 LEIAR10         NONE LEICA GR25
    3108 CTWN0  5023564.4285  1677795.7211 -3542025.8392  0.0000  0.0000  0.0000 ASH701941.B     NONE TRIMBLE NETR5
    3109 CUT07 -2364337.4408  4870285.6055 -3360809.6280  0.0000  0.0000  0.0000 TRM59800.00     SCIS TRIMBLE NETR9
    3110 GANP0  3929181.3480  1455236.9105  4793653.9880  0.0000  0.0000  0.3830 TRM55971.00     NONE TRIMBLE NETR9
    3111 HLFX0  2018905.6037 -4069070.5095  4462415.4771  0.0000  0.0000  0.1000 TPSCR.G3        NONE TPS NET-G3A
    3112 LHAZ0  -106941.9272  5549269.8041  3139215.1564  0.0000  0.0000  0.1330 ASH701941.B     NONE TPS E_GGD
    3113 LMMF7  2993387.3587 -5399363.8649  1596748.0983  0.0000  0.0000  0.0000 TRM57971.00     NONE TRIMBLE NETR9
    3114 MAO07 -5466067.0979 -2404333.0198  2242123.1929  0.0000  0.0000  0.0000 LEIAR25.R3      LEIT JAVAD TRE_G3TH DELTA
    3115 NICO0  4359415.5252  2874117.1872  3650777.9614  0.0000  0.0000  0.0650 LEIAR25.R4      LEIT LEICA GR25
    3116 NKLG7  6287385.7320  1071574.7606    39133.1088 -0.0015 -0.0025  3.0430 TRM59800.00     SCIS TRIMBLE NETR9
    3117 NURK7  5516756.5103  3196624.9684  -215027.1315  0.0000  0.0000  0.1300 TPSCR3_GGD      NONE JAVAD TRE_G3TH DELTA
    3118 ONSA0  3370658.3928   711877.2903  5349787.0603  0.0000  0.0000  0.9950 AOAD/M_B        OSOD JAVAD TRE_G3TH DELTA
    3119 PDEL0  4551595.9072 -2186892.9495  3883410.9685  0.0000  0.0000  0.0000 LEIAT504GG      NONE LEICA GRX1200GGPRO
    3120 RCMN0  5101056.6270  3829074.4206  -135016.1589  0.0000  0.0000  0.0000 LEIAT504GG      LEIS LEICA GRX1200GGPRO
    3121 REUN0  3364098.9668  4907944.6121 -2293466.7379  0.0000  0.0000  0.0610 TRM55971.00     NONE TRIMBLE NETR9
    3122 REYK7  2587384.0890 -1043033.5433  5716564.1301  0.0000  0.0000  0.0570 LEIAR25.R4      LEIT LEICA GR25
    3123 RIO27  1429907.8578 -3495354.8953 -5122698.5595  0.0000  0.0000  0.0350 ASH700936C_M    SNOW JAVAD TRE_G3TH DELTA
    3124 SMR50   927077.1096 -2195043.5597 -5896521.1344  0.0000  0.0000  0.0000 TRM41249.00     TZGD TRIMBLE NETR5
    3125 SUWN0 -3062023.1604  4055447.8946  3841818.1684  0.0000  0.0000  1.5700 TRM29659.00     DOME TRIMBLE NETR9
    3126 TASH7  1695944.9208  4487138.6220  4190140.7391  0.0000  0.0000  0.1206 JAV_RINGANT_G3T NONE JAVAD TRE_G3TH DELTA
    3127 UFPR0  3763751.6731 -4365113.9039 -2724404.5331  0.0000  0.0000  0.1000 TRM55971.00     NONE TRIMBLE NETR5
    3128 UNB30  1761287.9724 -4078238.5659  4561417.8448  0.0000  0.0000  0.3145 TRM57971.00     NONE TRIMBLE NETR9
    3129 WIND7  5633708.8016  1732017.9297 -2433985.5795  0.0000  0.0000  0.0460 ASH700936C_M    SNOW JAVAD TRE_G3TH DELTA
    3130 WTZR0  4075580.3797   931853.9767  4801568.2360  0.0000  0.0000  0.0710 LEIAR25.R3      LEIT LEICA GR25
    3131 WUH27 -2267749.9761  5009154.5504  3221294.4429  0.0000  0.0000  0.1206 JAV_RINGANT_G3T NONE JAVAD TRE_G3TH DELTA
    3132 YELL7 -1224452.8796 -2689216.1863  5633638.2832  0.0000  0.0000  0.1000 AOAD/M_T        NONE JAVAD TRE_G3TH DELTA
    3133 </pre>
    3134 <p>
    3135 Note again that the only mandatory parameters in this file are the 'Station' parameters in the first column, each standing for an observation stream's mountpoint or the 4-character station ID of a RINEX filename. The following shows further valid examples for records of a 'Coordinates file'.
    3136 </p>
    3137 
    3138 <pre>
    3139 !
    3140 ! Station     X[m]         Y[m]          Z[m]    N[m]   E[m]   U[m]  Antenna--------Radom Receiver
    3141 ! --------------------------------------------------------------------------------------------------
    3142 WTZR0   4075580.3797  931853.9767  4801568.2360  0.000  0.000  0.071 LEIAR25.R3      LEIT LEICA GR25
    3143 CUT07  -2364337.4408 4870285.6055 -3360809.6280  0.000  0.000  0.000 TRM59800.00     SCIS
    3144 FFMJ1   4053455.7384  617729.8393  4869395.8214  0.000  0.000  0.045
    3145 TITZ1   3993780.4501  450206.8969  4936136.9886
    3146 WARN
    3147 SASS1         0.0          0.0           0.0     0.000  0.000  0.031 TPSCR3_GGD      CONE TRIMBLE NETR5
    3148 </pre>
    3149 
    3150 <p>
    3151 In this file
    3152 </p>
    3153 <ul>
    3154 <li> Record 'WTZR0' describes a stream from a stationary receiver with known a priori marker coordinate, antenna eccentricity, antenna and radome type and receiver type.</li>
    3155 <li> Record 'CUT07' describes a stream from a stationary receiver with known a priori marker coordinate, antenna eccentricity and antenna and radome type. The receiver type is unknown.</li>
    3156 <li> Record 'FFMJ1' describes a stream from a stationary receiver with known a priori marker coordinate and antenna eccentricity but unknown antenna, radome and receiver type.</li>
    3157 <li> Record 'TITZ1' describes a stream coming from a stationary receiver where an a priori marker coordinate is known but antenna eccentricity, name and radome and receiver type are unknown.</li>
    3158 <li>The 4-character station ID 'WARN' indicates that a RINEX observations file for post processing PPP is available for station 'WARN' but an a priori marker coordinate as well as antenna eccentricity, name and radome are unknown.</li>
    3159 <li>Record 'SASS1' stands for a mountpoint where the stream comes from a mobile rover receiver. Hence an a priori coordinate is unknown although antenna eccentricity, name and radome and receiver type are known.</li>
    3160 </ul>
    3161 </p>
    3162 
    3163 <p><h4>2.13.1.8 <a name="pppv3filename">Version 3 Filenames - optional</h4></p>
    3164 <p>
    3165 Tick 'Version 3 filenames' to let BNC create so-called extended filenames for PPP logfiles, NMEA files and SINEX Troposphere files to follow the RINEX Version 3 standard, see section 'RINEX Filenames' for details.
    3166 </p>
    3167 <p>
    3168 Default is an empty check box, meaning to create filenames following the RINEX Version 2 standard. The file content is not affected by this option. It only concerns the filename notation.
    3169 </p>
    3170 <p>
    3171 The following are examples for Version 2 filenames:
    3172 <p>
    3173 </p>
    3174 <table>
    3175 <tr><td>&nbsp; CUT018671.nmea</td><td>&nbsp; &nbsp; NMEA filename, suffix 'nmea'</td></tr>
    3176 <tr><td>&nbsp; CUT018671.ppp</td><td>&nbsp; &nbsp; PPP logfile name, suffix 'ppp'</td></tr>
    3177 <tr><td>&nbsp; CUT018671J30.tro</td><td>&nbsp; &nbsp; SINEX Troposphere filename, suffix 'tro'</td></tr>
    3178 </table>
    3179 </p>
    3180 <p>
    3181 The following are examples for Version 3 filenames:<br>
    3182 </p>
    3183 <table>
    3184 <tr><td>&nbsp; CUT000AUS_U_20152920000_01D_01S.nmea</td><td>&nbsp; &nbsp; NMEA filename, suffix 'nmea'</td></tr>
    3185 <tr><td>&nbsp; CUT000AUS_U_20152920000_01D_01S.ppp</td><td>&nbsp; &nbsp; PPP logfile name, suffix 'ppp'</td></tr>
    3186 <tr><td>&nbsp; CUT000AUS_U_20152920945_15M_01S.tra</td><td>&nbsp; &nbsp; SINEX Troposphere filename, suffix 'tra'</td></tr>
    3187 </table>
    3188 </p>
    3189 
    3190 <p><h4>2.13.1.9 <a name="ppplogfile">Logfile Directory - optional</h4></p>
    3191 <p>
    3192 Essential PPP results are shown in the 'Log' tab on the bottom of BNC's main window. Depending on the processing options, the following values are presented about once per second (example):
    3193 <pre>
    3194 ...
    3195 15-10-21 13:23:38 2015-10-21_13:23:38.000 CUT07 X = -2364337.4505 Y = 4870285.6269 Z = -3360809.6481 NEU:  -0.0046  -0.0006  +0.0306 TRP:  +2.4018  +0.1006
    3196 15-10-21 13:23:39 2015-10-21_13:23:39.000 CUT07 X = -2364337.4468 Y = 4870285.6244 Z = -3360809.6453 NEU:  -0.0043  -0.0029  +0.0258 TRP:  +2.4018  +0.0993
    3197 15-10-21 13:23:40 2015-10-21_13:23:40.000 CUT07 X = -2364337.4455 Y = 4870285.6215 Z = -3360809.6466 NEU:  -0.0070  -0.0027  +0.0238 TRP:  +2.4018  +0.0978
    3198 15-10-21 13:23:41 2015-10-21_13:23:41.000 CUT07 X = -2364337.4447 Y = 4870285.6248 Z = -3360809.6445 NEU:  -0.0039  -0.0049  +0.0249 TRP:  +2.4018  +0.0962
    3199 15-10-21 13:23:42 2015-10-21_13:23:42.000 CUT07 X = -2364337.4426 Y = 4870285.6238 Z = -3360809.6424 NEU:  -0.0031  -0.0063  +0.0223 TRP:  +2.4018  +0.0950
    3200 15-10-21 13:23:43 2015-10-21_13:23:43.000 CUT07 X = -2364337.4453 Y = 4870285.6386 Z = -3360809.6518 NEU:  -0.0033  -0.0104  +0.0395 TRP:  +2.4018  +0.0927
    3201 15-10-21 13:23:44 2015-10-21_13:23:44.000 CUT07 X = -2364337.4435 Y = 4870285.6354 Z = -3360809.6487 NEU:  -0.0027  -0.0106  +0.0348 TRP:  +2.4018  +0.0908
    3202 15-10-21 13:23:45 2015-10-21_13:23:45.000 CUT07 X = -2364337.4445 Y = 4870285.6381 Z = -3360809.6532 NEU:  -0.0049  -0.0109  +0.0396 TRP:  +2.4018  +0.0884
    3203 15-10-21 13:23:46 2015-10-21_13:23:46.000 CUT07 X = -2364337.4437 Y = 4870285.6365 Z = -3360809.6548 NEU:  -0.0073  -0.0109  +0.0389 TRP:  +2.4018  +0.0855
    3204 15-10-21 13:23:47 2015-10-21_13:23:47.000 CUT07 X = -2364337.4498 Y = 4870285.6317 Z = -3360809.6395 NEU:  +0.0049  -0.0033  +0.0294 TRP:  +2.4018  +0.0833
    3205 ...
    3206 </pre>
    3207 </p>
    3208 <p>
    3209 Each row reports the PPP result of one epoch. It begins with a UTC time stamp (yy-mm-dd hh:mm:ss) which tells us when the result was produced. A second time stamp (yyyy-mm-dd_hh:mm:ss) describes the PPP's epoch in 'GPS Time'. It is followed by the derived XYZ position in [m], its North, East and Up displacement compared to an introduced a priori coordinate, and the estimated tropospheric delay [m] (model plus correction).
    3210 </p>
    3211 <p>
    3212 If you require more information, you can specify a 'Logfile directory' to save daily logfiles per station (filename suffix 'ppp') with additional processing details on disk.
    3213 </p>
    3214 
    3215 <p>
    3216 <pre>
    3217 Precise Point Positioning of Epoch 2015-10-21_13:23:47.000
    3218 ---------------------------------------------------------------
    3219 2015-10-21_13:23:47.000 SATNUM G  9
    3220 2015-10-21_13:23:47.000 SATNUM R  6
    3221 2015-10-21_13:23:47.000 SATNUM E  0
    3222 2015-10-21_13:23:47.000 SATNUM C  9
    3223 2015-10-21_13:23:47.000 RES C01   P3    0.3201
    3224 2015-10-21_13:23:47.000 RES C02   P3    0.3597
    3225 2015-10-21_13:23:47.000 RES C03   P3   -0.8003
    3226 2015-10-21_13:23:47.000 RES C04   P3    2.7684
    3227 2015-10-21_13:23:47.000 RES C05   P3    4.9738
    3228 2015-10-21_13:23:47.000 RES C06   P3    0.1888
    3229 2015-10-21_13:23:47.000 RES C07   P3   -2.8624
    3230 2015-10-21_13:23:47.000 RES C08   P3   -2.9075
    3231 2015-10-21_13:23:47.000 RES C10   P3   -1.5682
    3232 2015-10-21_13:23:47.000 RES G05   P3    0.3828
    3233 2015-10-21_13:23:47.000 RES G16   P3   -3.7602
    3234 2015-10-21_13:23:47.000 RES G18   P3    0.8424
    3235 2015-10-21_13:23:47.000 RES G20   P3    0.4062
    3236 2015-10-21_13:23:47.000 RES G21   P3    0.8683
    3237 2015-10-21_13:23:47.000 RES G25   P3   -1.3367
    3238 2015-10-21_13:23:47.000 RES G26   P3    1.4107
    3239 2015-10-21_13:23:47.000 RES G29   P3    1.1870
    3240 2015-10-21_13:23:47.000 RES G31   P3   -0.5605
    3241 2015-10-21_13:23:47.000 RES R01   P3   -0.1458
    3242 2015-10-21_13:23:47.000 RES R02   P3   -2.1184
    3243 2015-10-21_13:23:47.000 RES R14   P3    1.8634
    3244 2015-10-21_13:23:47.000 RES R15   P3   -1.3964
    3245 2015-10-21_13:23:47.000 RES R18   P3    0.5517
    3246 2015-10-21_13:23:47.000 RES R24   P3    1.5750
    3247 2015-10-21_13:23:47.000 RES C01   L3   -0.0040
    3248 2015-10-21_13:23:47.000 RES C02   L3    0.0070
    3249 2015-10-21_13:23:47.000 RES C03   L3    0.0093
    3250 2015-10-21_13:23:47.000 RES C04   L3   -0.0017
    3251 2015-10-21_13:23:47.000 RES C05   L3   -0.0008
    3252 2015-10-21_13:23:47.000 RES C06   L3   -0.0031
    3253 2015-10-21_13:23:47.000 RES C07   L3   -0.0016
    3254 2015-10-21_13:23:47.000 RES C08   L3   -0.0089
    3255 2015-10-21_13:23:47.000 RES C10   L3    0.0051
    3256 2015-10-21_13:23:47.000 RES G05   L3   -0.0408
    3257 2015-10-21_13:23:47.000 RES G16   L3    0.0043
    3258 2015-10-21_13:23:47.000 RES G18   L3    0.0017
    3259 2015-10-21_13:23:47.000 RES G20   L3   -0.0132
    3260 2015-10-21_13:23:47.000 RES G21   L3    0.0188
    3261 2015-10-21_13:23:47.000 RES G25   L3   -0.0059
    3262 2015-10-21_13:23:47.000 RES G26   L3    0.0028
    3263 2015-10-21_13:23:47.000 RES G29   L3    0.0062
    3264 2015-10-21_13:23:47.000 RES G31   L3    0.0012
    3265 2015-10-21_13:23:47.000 RES R01   L3    0.0260
    3266 2015-10-21_13:23:47.000 RES R02   L3   -0.0121
    3267 2015-10-21_13:23:47.000 RES R14   L3    0.0055
    3268 2015-10-21_13:23:47.000 RES R15   L3   -0.0488
    3269 2015-10-21_13:23:47.000 RES R18   L3    0.0475
    3270 2015-10-21_13:23:47.000 RES R24   L3    0.0103
    3271 
    3272 2015-10-21_13:23:47.000 CLK      45386.971 +-  0.163
    3273 2015-10-21_13:23:47.000 TRP       2.402 +0.083 +-  0.013
    3274 2015-10-21_13:23:47.000 OFFGLO       1.766 +-  0.250
    3275 2015-10-21_13:23:47.000 OFFGAL       0.000 +- 1000.001
    3276 2015-10-21_13:23:47.000 OFFBDS      29.385 +-  0.218
    3277 2015-10-21_13:23:47.000 AMB C01    239.913 +-  0.149   epo = 180
    3278 2015-10-21_13:23:47.000 AMB C04    151.821 +-  0.149   epo = 180
    3279 2015-10-21_13:23:47.000 AMB C05    137.814 +-  0.150   epo = 180
    3280 2015-10-21_13:23:47.000 AMB C06   -368.848 +-  0.149   epo = 180
    3281 2015-10-21_13:23:47.000 AMB C07   -102.508 +-  0.149   epo = 180
    3282 2015-10-21_13:23:47.000 AMB C08   -145.358 +-  0.150   epo = 180
    3283 2015-10-21_13:23:47.000 AMB C10    195.732 +-  0.149   epo = 180
    3284 2015-10-21_13:23:47.000 AMB G25     58.320 +-  0.159   epo = 180
    3285 2015-10-21_13:23:47.000 AMB G26    110.077 +-  0.159   epo = 180
    3286 2015-10-21_13:23:47.000 AMB G29   -555.466 +-  0.159   epo = 180
    3287 2015-10-21_13:23:47.000 AMB G31    -47.938 +-  0.159   epo = 180
    3288 2015-10-21_13:23:47.000 AMB R01   -106.913 +-  0.193   epo = 180
    3289 2015-10-21_13:23:47.000 AMB R02    168.316 +-  0.194   epo = 180
    3290 2015-10-21_13:23:47.000 AMB R24    189.793 +-  0.193   epo = 180
    3291 2015-10-21_13:23:47.000 AMB C02    -50.146 +-  0.149   epo = 175
    3292 2015-10-21_13:23:47.000 AMB G05   -185.211 +-  0.173   epo = 175
    3293 2015-10-21_13:23:47.000 AMB R14   -509.359 +-  0.194   epo = 175
    3294 2015-10-21_13:23:47.000 AMB R15     65.355 +-  0.194   epo = 175
    3295 2015-10-21_13:23:47.000 AMB R18   -105.206 +-  0.204   epo = 170
    3296 2015-10-21_13:23:47.000 AMB G16    215.751 +-  0.160   epo = 165
    3297 2015-10-21_13:23:47.000 AMB G18   -168.240 +-  0.159   epo = 165
    3298 2015-10-21_13:23:47.000 AMB G20   -284.129 +-  0.159   epo = 165
    3299 2015-10-21_13:23:47.000 AMB G21    -99.245 +-  0.159   epo = 165
    3300 2015-10-21_13:23:47.000 AMB C03   -117.727 +-  0.149   epo = 30
    3301 
    3302 2015-10-21_13:23:47.000 CUT07 X = -2364337.4498 +- 0.0279 Y = 4870285.6317 +- 0.0388 Z = -3360809.6395 +- 0.0313 dN = 0.0049 +- 0.0248 dE = -0.0033 +- 0.0239 dU = 0.0294 +- 0.0456
    3303 </pre>
    3304 <p>
    3305  Depending on selected processing options you find 'GPS Time' stamps (yyyy-mm-dd_hh:mm:ss.sss) followed by
    3306 <ul>
    3307 <li>SATNUM: Number of satellites per GNSS,</li>
    3308 <li>RES: Code and phase residuals for contributing GNSS systems in [m]<br>Given per satellite with cIF/lIF for ionosphere-free linear combination of code/phase observations,</li>
    3309 <li>CLK: Receiver clock errors in [m], </li>
    3310 <li>TRP: A priori and correction values of tropospheric zenith delay in [m],
    3311 <li>OFFGLO: Time offset between GPS time and GLONASS time in [m],
    3312 <li>OFFGAL: Time offset between GPS time and Galileo time in [m],
    3313 <li>OFFBDS: Time offset between GPS time and BDS time in [m],
    3314 <li>AMB: L3 biases, also known as 'floated ambiguities'<br>Given per satellite with 'nEpo' = number of epochs since last ambiguity reset,
    3315 <li>MOUNTPOINT: Here 'CUT07' with XYZ position in [m] and dN/dE/dU in [m] for North, East, and Up displacements compared to a priori marker coordinates.</li>
    3316 </ul>
    3317 Estimated parameters are presented together with their formal errors as derived from the implemented filter. The PPP algorithm includes outlier and cycle slip detection.
    3318 </p>
    3319 <p>
    3320 Default value for 'Logfile directory' is an empty option field, meaning that you do not want to save daily PPP logfiles on disk. If a specified directory does not exist, BNC will not create PPP logfiles.
    3321 </p>
    3322 
    3323 <p><h4>2.13.1.10 <a name="pppnmeafile">NMEA Directory - optional</h4></p>
    3324 <p>
    3325 You can specify a 'NMEA directory' to save daily NMEA files with Point Positioning results recorded as NMEA sentences. Such sentences are usually generated about once per second with pairs of
    3326 </p>
    3327 <p>
    3328 <ul>
    3329 <li> GPGGA sentences which mainly carry the estimated latitude, longitude, and height values, plus</li>
    3330 <li> GPRMC sentences which mainly carry date and time information.</li>
    3331 </ul>
    3332 </p>
    3333 The following is an example for an NMEA output file from BNC.
    3334 </p>
    3335 <pre>
    3336 $GPRMC,112348,A,3200.233,S,11553.688,E,,,300615,,*A
     3609<li><p class="first">TRP: A priori and correction values of tropospheric zenith delay in [m],</p>
     3610</li>
     3611<li><p class="first">OFFGLO: Time offset between GPS time and GLONASS time in [m],</p>
     3612</li>
     3613<li><p class="first">OFFGAL: Time offset between GPS time and Galileo time in [m],</p>
     3614</li>
     3615<li><p class="first">OFFBDS: Time offset between GPS time and BDS time in [m],</p>
     3616</li>
     3617<li><p class="first">AMB: L3 biases, also known as &#8216;floated ambiguities&#8217;</p>
     3618<p>Given per satellite with &#8216;nEpo&#8217; = number of epochs since last ambiguity reset,</p>
     3619</li>
     3620<li><p class="first">MOUNTPOINT: Here &#8216;CUT07&#8217; with XYZ position in [m] and dN/dE/dU in [m] for North, East, and Up displacements compared to a priori marker coordinates.</p>
     3621</li>
     3622</ul>
     3623<p>Estimated parameters are presented together with their formal errors as derived from the implemented filter. The PPP algorithm includes outlier and cycle slip detection.</p>
     3624<p>Default value for &#8216;Logfile directory&#8217; is an empty option field, meaning that you do not want to save daily PPP logfiles on disk. If a specified directory does not exist, BNC will not create PPP logfiles.</p>
     3625</div>
     3626<div class="section" id="nmea-directory-optional">
     3627<span id="index-28"></span><h5>NMEA Directory - optional<a class="headerlink" href="#nmea-directory-optional" title="Permalink to this headline">¶</a></h5>
     3628<p>You can specify a &#8216;NMEA directory&#8217; to save daily NMEA files with Point Positioning results recorded as NMEA sentences. Such sentences are usually generated about once per second with pairs of</p>
     3629<ul class="simple">
     3630<li>GPGGA sentences which mainly carry the estimated latitude, longitude, and height values, plus</li>
     3631<li>GPRMC sentences which mainly carry date and time information.</li>
     3632</ul>
     3633<p>The following is an example for an NMEA output file from BNC:</p>
     3634<div class="highlight-none"><div class="highlight"><pre>$GPRMC,112348,A,3200.233,S,11553.688,E,,,300615,,*A
    33373635$GPGGA,112348,3200.2332035,S,11553.6880127,E,1,13,1.4,23.971,M,0.0,M,,*5D
    33383636$GPRMC,112349,A,3200.233,S,11553.688,E,,,300615,,*B
    … …  
    33533651$GPGGA,112356,3200.2332035,S,11553.6880127,E,1,13,1.4,23.971,M,0.0,M,,*52
    33543652...
    3355 </pre>
    3356 <p>
    3357 The default value for 'NMEA directory' is an empty option field, meaning that BNC will not save NMEA sentences into files. If a specified directory does not exist, BNC will not create NMEA files.
    3358 </p>
    3359 
    3360 <p>
    3361 Note that Tomoji Takasu has written a program named RTKPLOT for visualizing NMEA sentences from IP ports or files. It is available from <u>http://www.rtklib.com</u> and compatible with the 'NMEA Directory' and port output of BNC's 'PPP' client option.
    3362 </p>
    3363 
    3364 <p><h4>2.13.1.11 <a name="pppsnxtrofile">SNX TRO Directory - optional</h4></p>
    3365 <p>
    3366 BNC estimates the tropospheric delay according to equation
    3367 <pre>
    3368    T(z) = T_apr(z) + dT / cos(z)
    3369 </pre>
    3370 where T_apr is the a priori tropospheric delay derived from Saastamoinen model.
    3371 </p>
    3372 
    3373 <p>
    3374 You can specify a 'SNX TRO Directory' for saving SINEX Troposphere files on disk, see <u>https://igscb.jpl.nasa.gov/igscb/data/format/sinex_tropo.txt</u> for a documentation of the file format. Note that receiver type information for these files must be provided through the coordinates file described in section 'Coordinates file'. The following is an example for a troposphere file content:
    3375 </p>
    3376 
    3377 <pre>
    3378 %=TRO 2.00 BKG 16:053:42824 BKG 16:053:42824 16:053:43199 P 00376 0  T
    3379 +FILE/REFERENCE
    3380  DESCRIPTION        BNC generated SINEX TRO file
    3381  OUTPUT             Total Troposphere Zenith Path Delay Product
    3382  SOFTWARE           BNC 2.12
    3383  INPUT              Ntrip streams, additional Orbit and Clock information from IGS03
    3384 -FILE/REFERENCE
     3653</pre></div>
     3654</div>
     3655<p>The default value for &#8216;NMEA directory&#8217; is an empty option field, meaning that BNC will not save NMEA sentences into files. If a specified directory does not exist, BNC will not create NMEA files. Note that Tomoji Takasu has written a program named RTKPLOT for visualizing NMEA sentences from IP ports or files. It is available from <a class="reference external" href="http://www.rtklib.com">http://www.rtklib.com</a> and compatible with the &#8216;NMEA Directory&#8217; and port output of BNC&#8217;s &#8216;PPP&#8217; client option.</p>
     3656</div>
     3657<div class="section" id="snx-tro-directory-optional">
     3658<h5>SNX TRO Directory - optional<a class="headerlink" href="#snx-tro-directory-optional" title="Permalink to this headline">¶</a></h5>
     3659<p>BNC estimates the tropospheric delay according to equation</p>
     3660<div class="math">
     3661\[T(z) = T_{apr}(z) + dT / cos(z)\]</div>
     3662<p>where <span class="math">\(T_{apr}\)</span> is the a priori tropospheric delay derived from Saastamoinen model.</p>
     3663<p>You can specify a &#8216;SNX TRO Directory&#8217; for saving SINEX Troposphere files on disk, see <a class="reference external" href="https://igscb.jpl.nasa.gov/igscb/data/format/sinex_tropo.txt">https://igscb.jpl.nasa.gov/igscb/data/format/sinex_tropo.txt</a> for a documentation of the file format. Note that receiver type information for these files must be provided through the coordinates file described in section &#8216;Coordinates file&#8217;. The following is an example for a troposphere file content:</p>
     3664<div class="highlight-none"><div class="highlight"><pre> %=TRO 2.00 BKG 16:053:42824 BKG 16:053:42824 16:053:43199 P 00376 0  T
     3665 +FILE/REFERENCE
     3666  DESCRIPTION        BNC generated SINEX TRO file
     3667  OUTPUT             Total Troposphere Zenith Path Delay Product
     3668  SOFTWARE           BNC 2.12
     3669  INPUT              Ntrip streams, additional Orbit and Clock information from IGS03
     3670 -FILE/REFERENCE
    33853671
    33863672+SITE/ID
    3387 *CODE PT DOMES____ T _STATION DESCRIPTION__ APPROX_LON_ APPROX_LAT_ _APP_H_
    3388  CUT0  A           P AUS                    115 53 41.3 -32  0 14.0    24.0
    3389 -SITE/ID
     3673 *CODE PT DOMES____ T _STATION DESCRIPTION__ APPROX_LON_ APPROX_LAT_ _APP_H_
     3674  CUT0  A           P AUS                    115 53 41.3 -32  0 14.0    24.0
     3675 -SITE/ID
    33903676
    3391 +SITE/RECEIVER
    3392 *SITE PT SOLN T DATA_START__ DATA_END____ DESCRIPTION_________ S/N__ FIRMWARE___
    3393  CUT0  A 0001 P 16:053:42824 16:053:43199 TRM59800.00     SCIS ----- -----------
    3394 -SITE/RECEIVER
     3677 +SITE/RECEIVER
     3678 *SITE PT SOLN T DATA_START__ DATA_END____ DESCRIPTION_________ S/N__ FIRMWARE___
     3679  CUT0  A 0001 P 16:053:42824 16:053:43199 TRM59800.00     SCIS ----- -----------
     3680 -SITE/RECEIVER
    33953681
    3396 +SITE/ANTENNA
    3397 *SITE PT SOLN T DATA_START__ DATA_END____ DESCRIPTION_________ S/N__
    3398  CUT0  A 0001 P 16:053:42824 16:053:43199 TRM59800.00     SCIS -----
    3399 -SITE/ANTENNA
     3682 +SITE/ANTENNA
     3683 *SITE PT SOLN T DATA_START__ DATA_END____ DESCRIPTION_________ S/N__
     3684  CUT0  A 0001 P 16:053:42824 16:053:43199 TRM59800.00     SCIS -----
     3685 -SITE/ANTENNA
    34003686
    3401 +SITE/ECCENTRICITY
    3402 *                                             UP______ NORTH___ EAST____
    3403 *SITE PT SOLN T DATA_START__ DATA_END____ AXE ARP->BENCHMARK(M)_________
    3404  CUT0  A 0001 P 16:053:42824 16:053:43199 UNE   0.0000   0.0000   0.0000
    3405 -SITE/ECCENTRICITY
     3687 +SITE/ECCENTRICITY
     3688 *                                             UP______ NORTH___ EAST____
     3689 *SITE PT SOLN T DATA_START__ DATA_END____ AXE ARP-&gt;BENCHMARK(M)_________
     3690  CUT0  A 0001 P 16:053:42824 16:053:43199 UNE   0.0000   0.0000   0.0000
     3691 -SITE/ECCENTRICITY
    34063692
    3407 +TROP/COORDINATES
    3408 *SITE PT SOLN T STA_X_______ STA_Y_______ STA_Z_______ SYSTEM REMARK
    3409  CUT0  A 0001 P -2364337.441  4870285.605 -3360809.628 ITRF08 BKG
    3410 -TROP/COORDINATES
     3693 +TROP/COORDINATES
     3694 *SITE PT SOLN T STA_X_______ STA_Y_______ STA_Z_______ SYSTEM REMARK
     3695  CUT0  A 0001 P -2364337.441  4870285.605 -3360809.628 ITRF08 BKG
     3696 -TROP/COORDINATES
    34113697
    3412 +TROP/DESCRIPTION
    3413 *KEYWORD______________________ VALUE(S)______________
    3414  SAMPLING INTERVAL                                  1
    3415  SAMPLING TROP                                      1
    3416  ELEVATION CUTOFF ANGLE                             7
    3417  TROP MAPPING FUNCTION         Saastamoinen
    3418  SOLUTION_FIELDS_1             TROTOT STDEV
    3419 -TROP/DESCRIPTION
     3698 +TROP/DESCRIPTION
     3699 *KEYWORD______________________ VALUE(S)______________
     3700  SAMPLING INTERVAL                                  1
     3701  SAMPLING TROP                                      1
     3702  ELEVATION CUTOFF ANGLE                             7
     3703  TROP MAPPING FUNCTION         Saastamoinen
     3704  SOLUTION_FIELDS_1             TROTOT STDEV
     3705 -TROP/DESCRIPTION
    34203706
    3421 +TROP/SOLUTION
    3422 *SITE EPOCH_______ TROTOT STDEV
    3423  CUT0 16:053:42824    0.0   0.0
    3424  CUT0 16:053:42825 2401.7 100.0
    3425  CUT0 16:053:42826 2401.8 100.0
    3426  CUT0 16:053:42827 2401.8  99.9
    3427  CUT0 16:053:42828 2402.1  99.9
    3428 ...
    3429 ...
    3430 -TROP/SOLUTION
    3431 %=ENDTROP
    3432 </pre>
    3433 
    3434 <p>
    3435 The default value for 'SNX TRO Directory' is an empty option field, meaning that BNC will not save SINEX Troposphere files. If a specified directory does not exist, BNC will not create SINEX Troposphere files.
    3436 </p>
    3437 
    3438 <p><h4>2.13.1.11.1 <a name="pppsnxtrointr">Interval - mandatory if 'SINEX TRO Directory' is set</h4></p>
    3439 <p>
    3440 Select the length of SINEX Troposphere files.
    3441 </p>
    3442 <p>
    3443 Default 'Interval' for saving SINEX Troposphere files on disk is '1 day'.
    3444 </p>
    3445 
    3446 <p><h4>2.13.1.11.2 <a name="pppsnxtrosampl">Sampling - mandatory if 'SINEX TRO Directory' is set</h4></p>
    3447 <p>
    3448 Select a 'Sampling' rate in seconds for saving troposphere parameters.
    3449 </p>
    3450 <p>
    3451 Default 'Sampling' rate is '0', meaning that all troposphere estimates will be saved on disk.
    3452 </p>
    3453 
    3454 <p><h4>2.13.1.11.3 <a name="pppsnxAc">Analysis Center - Mandatory if 'SINEX TRO Directory' is set</h4></p>
    3455 <p>
    3456 Specify a 3-character abbreviation describing you as the generating Analysis Center (AC) in your SINEX troposphere files. String 'BKG' is an example.
    3457 </p>
    3458 
    3459 <p><h4>2.13.1.11.4 <a name="pppsnxSol">Solution ID - Mandatory if 'SINEX TRO Directory' is set</h4></p>
    3460 <p>
    3461 Specify a 4-character solution ID to allow a distingtion between different solutions per AC. String '0001' is an example.
    3462 </p>
    3463 
    3464 <p><h4>2.13.2 <a name="pppStation">PPP (2): Processed Stations</h4></p>
    3465 
    3466 <p>
    3467 This panel allows to enter parameters specific to each PPP process or thread. Individual sigmas for a priori coordinates and a noise for coordinate variations over time can be introduced. Furthermore, a sigma for model-based troposphere estimates and the corresponding noise for troposphere variations can be specified. Finally, local IP server ports can be defined for output of NMEA streams carrying PPP results.
    3468 </p>
    3469 <p>
    3470 BNC offers to create a table with one line per PPP process or thread to specify station-specific parameters. Hit the 'Add Station' button to create the table or add a new line to it. To remove a line from the table, highlight it by clicking it and hit the 'Delete Station' button. You can also remove multiple lines simultaneously by highlighting them using +Shift or +Ctrl.</p>
    3471 </p>
    3472 <p>
    3473 BNC will simultaneously produce PPP solutions for all stations listed in the 'Station' column of this table.
    3474 </p>
    3475 
    3476 <p><img src="IMG/screenshot17.png"/></p>
    3477 <p><u>Figure 23:</u> Precise Point Positioning with BNC, PPP Panel 2, using RTKPLOT for visualization</p>
    3478 
    3479 <p><h4>2.13.2.1 <a name="pppsite">Station - mandatory</h4></p>
    3480 <p>
    3481 Hit the 'Add Station' button, double click on the 'Station' field, then specify an observation's mountpoint from the 'Streams' section or introduce the 4-character Station ID of your RINEX observation file and hit Enter. BNC will only produce PPP solutions for stations listed in this table.
    3482 </p>
    3483 
    3484 <p><h4>2.13.2.2 <a name="pppnehsigma">Sigma North/East/Up - mandatory</h4></p>
    3485 <p>
    3486 Enter sigmas in meters for the initial coordinate components. A value of 100.0 (default) may be an appropriate choice. However, this value may be significantly smaller (e.g. 0.01) when starting for example from a station with a well-known position in so-called Quick-Start mode.
    3487 </p>
    3488 
    3489 <p><h4>2.13.2.3 <a name="pppnehnoise">Noise North/East/Up - mandatory</h4></p>
    3490 <p>
    3491 Enter a white 'Noise' in meters for estimated coordinate components. A value of 100.0 (default) may be appropriate when considering possible sudden movements of a rover.
    3492 </p>
    3493 
    3494 <p><h4>2.13.2.4 <a name="ppptropsigma">Tropo Sigma - mandatory</h4></p>
    3495 <p>
    3496 Enter a sigma in meters for the a priori model based tropospheric delay estimation. A value of 0.1 (default) may be an appropriate choice.
    3497 </p>
    3498 
    3499 <p><h4>2.13.2.5 <a name="ppptropnoise">Tropo Noise - mandatory</h4></p>
    3500 <p>
    3501 Enter a white 'Noise' in meters per second to describe the expected variation of the tropospheric effect. Supposing 1Hz observation data, a value of 3e-6 (default) would mean that the tropospheric effect may vary for 3600 * 3e-6 = 0.01 meters per hour.
    3502 </p>
    3503 
    3504 <p><h4>2.13.2.6 <a name="pppnmeaport">NMEA Port - optional</h4></p>
    3505 Specify the IP port number of a local port where Point Positioning results become available as NMEA sentences. The default value for 'NMEA Port' is an empty option field, meaning that BNC does not provide NMEA sentences via IP port. Note that NMEA file output and NMEA IP port output are the same.
    3506 </p>
    3507 <p>
    3508 Note also that Tomoji Takasu has written a program named RTKPLOT for visualizing NMEA sentences from IP ports or files. It is available from <u>http://www.rtklib.com</u> and compatible with the NMEA file and port output of BNC's 'PPP' client option.
    3509 </p>
    3510 <p>
    3511 Furthermore, NASA's 'World Wind' software (see <u>http://worldwindcentral.com/wiki/NASA_World_Wind_Download</u>) can be used for real-time visualization of positions provided through BNC's NMEA IP output port. You need the 'GPS Tracker' plug-in available from <u>http://worldwindcentral.com/wiki/GPS_Tracker</u> for that. The 'Word Wind' map resolution is not meant for showing centimeter level details.
    3512 </p>
    3513 
    3514 <p><h4>2.13.3 <a name="pppOptions">PPP (3): Processing Options</h4></p>
    3515 <p>BNC allows using various Point Positioning processing options depending on the capability of the involved receiver and the application in mind. You can introduce specific sigmas for code and phase observations as well as for a priori coordinates and troposphere estimates. You could also carry out your PPP solution in Quick-Start mode or enforce BNC to restart a solution if the length of an outage exceeds a certain threshold.
    3516 </p>
    3517 <p>
    3518 The intention of this panel is to specify general processing options to be applied to all PPP threads in one BNC job.
    3519 </p>
    3520 
    3521 <p><img src="IMG/screenshot18.png"/></p>
    3522 <p><u>Figure 24:</u> Precise Point Positioning with BNC, PPP Panel 3</p>
    3523 
    3524 <p><h4>2.13.3.1 <a name="ppplinecombi">Linear Combinations - mandatory</h4></p>
    3525 <p>
    3526 <p>
    3527 Specify on which ionosphere-free Linear Combinations (LCs) of observations you want to base ambiguity resolutions (Mervart et al. 2008). This implicitly defines the kind of GNSS observations you want to use. The specification is to be done per GNSS system ('GPS LCs', 'GLONASS LCs', 'Galileo LCs', 'BDS LCs').
    3528 </p>
    3529 <p>
    3530 <ul>
    3531 <li>Selecting 'P3' means that you request BNC to use code data and the so-called P3 ionosphere-free linear combinations of code observations.</li>
    3532 <li>'L3' means that you request BNC to use phase data and the so-called L3 ionosphere-free linear combinations of phase observations.</li>
    3533 <li>'P3&L3' means that you request BNC to use both, code and phase data and the so-called P3 and L3 ionosphere-free linear combinations of code and phase observations.
    3534 </li>
    3535 </ul>
    3536 </p>
    3537 <p>Note that most geodetic GPS receivers support the observation of both, code and phase data. Hence, specifying 'P3&L3' would be a good choice for GPS when processing data from such a receiver. If multi-GNSS data processing is your intention, make sure your receiver supports GLONASS and/or Galileo and/or BDS observations besides GPS. Note also that the Broadcast Correction stream or file, which is required for PPP, also supports all the systems you have in mind.
    3538 </p>
    3539 <p>Specifying 'no' means that you do not at all want BNC to use observations from the affected GNSS system.
    3540 </p>
    3541 
    3542 <p><h4>2.13.3.2 <a name="pppcodeobs">Code Observations - mandatory</h4></p>
    3543 </p>
    3544 Enter a 'Sigma C1' for C1 code observations in meters. The bigger the sigma you enter, the less the contribution of C1 code observations to a PPP solution based on a combination of code and phase data. '2.0' meters is likely to be an appropriate choice.
    3545 </p>
    3546 <p>
    3547 Specify a maximum for residuals 'Max Res C1' for C1 code observations in a PPP solution. '3.0' meters may be an appropriate choice for that. If the maximum is exceeded, contributions from the corresponding observation will be ignored in the PPP solution.
    3548 </p>
    3549 
    3550 
    3551 <p><h4>2.13.3.3 <a name="pppphaseobs">Phase Observations - mandatory</h4></p>
    3552 <p>
    3553 Enter a 'Sigma L1' for L1 phase observations in meters. The bigger the sigma you enter, the less the contribution of L1 phase observations to a PPP solutions based on a combination of code and phase data. '0.01' meters is likely to be an appropriate choice.
    3554 </p>
    3555 <p>
    3556 Specify a maximum for residuals 'Max Res L1' for L1 phase observations in a PPP solution. '0.03' meters may be an appropriate choice for that. If the maximum is exceeded, contributions from the corresponding observation will be ignored in the PPP solution.
    3557 </p>
    3558 
    3559 <p>
    3560 As the convergence characteristic of a PPP solution can be influenced by the ratio of sigmas for code and phase, you may like to introduce sigmas which differ from the default values.
    3561 <ul>
     3707 +TROP/SOLUTION
     3708 *SITE EPOCH_______ TROTOT STDEV
     3709  CUT0 16:053:42824    0.0   0.0
     3710  CUT0 16:053:42825 2401.7 100.0
     3711  CUT0 16:053:42826 2401.8 100.0
     3712  CUT0 16:053:42827 2401.8  99.9
     3713  CUT0 16:053:42828 2402.1  99.9
     3714 ...
     3715 ...
     3716 -TROP/SOLUTION
     3717 %=ENDTROP
     3718</pre></div>
     3719</div>
     3720<p>The default value for &#8216;SNX TRO Directory&#8217; is an empty option field, meaning that BNC will not save SINEX Troposphere files. If a specified directory does not exist, BNC will not create SINEX Troposphere files.</p>
     3721</div>
     3722<div class="section" id="snx-tro-interval-mandatory-if-sinex-tro-directory-is-set">
     3723<h5>SNX TRO Interval - mandatory if &#8216;SINEX TRO Directory&#8217; is set<a class="headerlink" href="#snx-tro-interval-mandatory-if-sinex-tro-directory-is-set" title="Permalink to this headline">¶</a></h5>
     3724<p>Select the length of SINEX Troposphere files. Default &#8216;Interval&#8217; for saving SINEX Troposphere files on disk is &#8216;1 day&#8217;.</p>
     3725</div>
     3726<div class="section" id="snx-tro-sampling-mandatory-if-sinex-tro-directory-is-set">
     3727<h5>SNX TRO Sampling - mandatory if &#8216;SINEX TRO Directory&#8217; is set<a class="headerlink" href="#snx-tro-sampling-mandatory-if-sinex-tro-directory-is-set" title="Permalink to this headline">¶</a></h5>
     3728<p>Select a &#8216;Sampling&#8217; rate in seconds for saving troposphere parameters. Default &#8216;Sampling&#8217; rate is &#8216;0&#8217;, meaning that all troposphere estimates will be saved on disk.</p>
     3729</div>
     3730<div class="section" id="snx-tro-analysis-center-mandatory-if-sinex-tro-directory-is-set">
     3731<h5>SNX TRO Analysis Center - Mandatory if &#8216;SINEX TRO Directory&#8217; is set<a class="headerlink" href="#snx-tro-analysis-center-mandatory-if-sinex-tro-directory-is-set" title="Permalink to this headline">¶</a></h5>
     3732<p>Specify a 3-character abbreviation describing you as the generating Analysis Center (AC) in your SINEX troposphere files. String &#8216;BKG&#8217; is an example.</p>
     3733</div>
     3734<div class="section" id="snx-tro-solution-id-mandatory-if-sinex-tro-directory-is-set">
     3735<h5>SNX TRO Solution ID - Mandatory if &#8216;SINEX TRO Directory&#8217; is set<a class="headerlink" href="#snx-tro-solution-id-mandatory-if-sinex-tro-directory-is-set" title="Permalink to this headline">¶</a></h5>
     3736<p>Specify a 4-character solution ID to allow a distingtion between different solutions per AC. String &#8216;0001&#8217; is an example.</p>
     3737</div>
     3738</div>
     3739<div class="section" id="ppp-2-processed-stations">
     3740<span id="index-29"></span><h4>PPP (2): Processed Stations<a class="headerlink" href="#ppp-2-processed-stations" title="Permalink to this headline">¶</a></h4>
     3741<p>This panel allows to enter parameters specific to each PPP process or thread. Individual sigmas for a priori coordinates and a noise for coordinate variations over time can be introduced. Furthermore, a sigma for model-based troposphere estimates and the corresponding noise for troposphere variations can be specified. Finally, local IP server ports can be defined for output of NMEA streams carrying PPP results.</p>
     3742<p>BNC offers to create a table with one line per PPP process or thread to specify station-specific parameters. Hit the &#8216;Add Station&#8217; button to create the table or add a new line to it. To remove a line from the table, highlight it by clicking it and hit the &#8216;Delete Station&#8217; button. You can also remove multiple lines simultaneously by highlighting them using +Shift or +Ctrl. BNC will simultaneously produce PPP solutions for all stations listed in the &#8216;Station&#8217; column of this table, see <a class="reference internal" href="#fig-23"><span class="std std-numref">Fig. 25</span></a> for an example screenshot.</p>
     3743<div class="figure" id="id48">
     3744<span id="fig-23"></span><a class="reference internal image-reference" href="_images/fig_23.png"><img alt="_images/fig_23.png" src="_images/fig_23.png" style="width: 1281.0px; height: 893.0px;" /></a>
     3745<p class="caption"><span class="caption-number">Fig. 25 </span><span class="caption-text">Precise Point Positioning with BNC, PPP Panel 2, using RTKPLOT for visualization</span></p>
     3746</div>
     3747<div class="section" id="station-mandatory">
     3748<h5>Station - mandatory<a class="headerlink" href="#station-mandatory" title="Permalink to this headline">¶</a></h5>
     3749<p>Hit the &#8216;Add Station&#8217; button, double click on the &#8216;Station&#8217; field, then specify an observation&#8217;s mountpoint from the &#8216;Streams&#8217; section or introduce the 4-character Station ID of your RINEX observation file and hit Enter. BNC will only produce PPP solutions for stations listed in this table.</p>
     3750</div>
     3751<div class="section" id="sigma-north-east-up-mandatory">
     3752<h5>Sigma North/East/Up - mandatory<a class="headerlink" href="#sigma-north-east-up-mandatory" title="Permalink to this headline">¶</a></h5>
     3753<p>Enter sigmas in meters for the initial coordinate components. A value of 100.0 (default) may be an appropriate choice. However, this value may be significantly smaller (e.g. 0.01) when starting for example from a station with a well-known position in so-called Quick-Start mode.</p>
     3754</div>
     3755<div class="section" id="noise-north-east-up-mandatory">
     3756<h5>Noise North/East/Up - mandatory<a class="headerlink" href="#noise-north-east-up-mandatory" title="Permalink to this headline">¶</a></h5>
     3757<p>Enter a white &#8216;Noise&#8217; in meters for estimated coordinate components. A value of 100.0 (default) may be appropriate when considering possible sudden movements of a rover.</p>
     3758</div>
     3759<div class="section" id="tropo-sigma-mandatory">
     3760<h5>Tropo Sigma - mandatory<a class="headerlink" href="#tropo-sigma-mandatory" title="Permalink to this headline">¶</a></h5>
     3761<p>Enter a sigma in meters for the a priori model based tropospheric delay estimation. A value of 0.1 (default) may be an appropriate choice.</p>
     3762</div>
     3763<div class="section" id="tropo-noise-mandatory">
     3764<h5>Tropo Noise - mandatory<a class="headerlink" href="#tropo-noise-mandatory" title="Permalink to this headline">¶</a></h5>
     3765<p>Enter a white &#8216;Noise&#8217; in meters per second to describe the expected variation of the tropospheric effect. Supposing 1Hz observation data, a value of 3e-6 (default) would mean that the tropospheric effect may vary for 3600 * 3e-6 = 0.01 meters per hour.</p>
     3766</div>
     3767<div class="section" id="nmea-port-optional">
     3768<h5>NMEA Port - optional<a class="headerlink" href="#nmea-port-optional" title="Permalink to this headline">¶</a></h5>
     3769<p>Specify the IP port number of a local port where Point Positioning results become available as NMEA sentences. The default value for &#8216;NMEA Port&#8217; is an empty option field, meaning that BNC does not provide NMEA sentences via IP port. Note that NMEA file output and NMEA IP port output are the same.</p>
     3770<p>Note also that Tomoji Takasu has written a program named RTKPLOT for visualizing NMEA sentences from IP ports or files. It is available from <a class="reference external" href="http://www.rtklib.com">http://www.rtklib.com</a> and compatible with the NMEA file and port output of BNC&#8217;s &#8216;PPP&#8217; client option.</p>
     3771<p>Furthermore, NASA&#8217;s &#8216;World Wind&#8217; software (see <a class="reference external" href="http://worldwindcentral.com/wiki/NASA_World_Wind_Download">http://worldwindcentral.com/wiki/NASA_World_Wind_Download</a>) can be used for real-time visualization of positions provided through BNC&#8217;s NMEA IP output port. You need the &#8216;GPS Tracker&#8217; plug-in available from <a class="reference external" href="http://worldwindcentral.com/wiki/GPS_Tracker">http://worldwindcentral.com/wiki/GPS_Tracker</a> for that. The &#8216;Word Wind&#8217; map resolution is not meant for showing centimeter level details.</p>
     3772</div>
     3773</div>
     3774<div class="section" id="ppp-3-processing-options">
     3775<span id="index-30"></span><h4>PPP (3): Processing Options<a class="headerlink" href="#ppp-3-processing-options" title="Permalink to this headline">¶</a></h4>
     3776<p>BNC allows using various Point Positioning processing options depending on the capability of the involved receiver and the application in mind. You can introduce specific sigmas for code and phase observations as well as for a priori coordinates and troposphere estimates. You could also carry out your PPP solution in Quick-Start mode or enforce BNC to restart a solution if the length of an outage exceeds a certain threshold. The intention of this panel is to specify general processing options to be applied to all PPP threads in one BNC job, see <a class="reference internal" href="#fig-24"><span class="std std-numref">Fig. 26</span></a> for an example setup.</p>
     3777<div class="figure" id="id49">
     3778<span id="fig-24"></span><a class="reference internal image-reference" href="_images/fig_24.png"><img alt="_images/fig_24.png" src="_images/fig_24.png" style="width: 1269.0px; height: 933.0px;" /></a>
     3779<p class="caption"><span class="caption-number">Fig. 26 </span><span class="caption-text">Precise Point Positioning with BNC, PPP Panel 3</span></p>
     3780</div>
     3781<div class="section" id="linear-combinations-mandatory">
     3782<span id="index-31"></span><h5>Linear Combinations - mandatory<a class="headerlink" href="#linear-combinations-mandatory" title="Permalink to this headline">¶</a></h5>
     3783<p>Specify on which ionosphere-free Linear Combinations (LCs) of observations you want to base ambiguity resolutions <a class="reference internal" href="bnchelp.html#mervart2008a" id="id11">[9]</a>. This implicitly defines the kind of GNSS observations you want to use. The specification is to be done per GNSS system (&#8216;GPS LCs&#8217;, &#8216;GLONASS LCs&#8217;, &#8216;Galileo LCs&#8217;, &#8216;BDS LCs&#8217;).</p>
     3784<ul class="simple">
     3785<li>Selecting &#8216;P3&#8217; means that you request BNC to use code data and the so-called P3 ionosphere-free linear combinations of code observations.</li>
     3786<li>&#8216;P3&amp;L3&#8217; means that you request BNC to use both, code and phase data and the so-called P3 and L3 ionosphere-free linear combinations of code and phase observations.</li>
     3787</ul>
     3788<p>Note that most geodetic GPS receivers support the observation of both, code and phase data. Hence, specifying &#8216;P3&amp;L3&#8217; would be a good choice for GPS when processing data from such a receiver. If multi-GNSS data processing is your intention, make sure your receiver supports GLONASS and/or Galileo and/or BDS observations besides GPS. Note also that the Broadcast Correction stream or file, which is required for PPP, also supports all the systems you have in mind.</p>
     3789<p>Specifying &#8216;no&#8217; means that you do not at all want BNC to use observations from the affected GNSS system.</p>
     3790</div>
     3791<div class="section" id="code-observations-mandatory">
     3792<span id="index-32"></span><h5>Code Observations - mandatory<a class="headerlink" href="#code-observations-mandatory" title="Permalink to this headline">¶</a></h5>
     3793<p>Enter a &#8216;Sigma C1&#8217; for C1 code observations in meters. The bigger the sigma you enter, the less the contribution of C1 code observations to a PPP solution based on a combination of code and phase data. &#8216;2.0&#8217; meters is likely to be an appropriate choice. Specify a maximum for residuals &#8216;Max Res C1&#8217; for C1 code observations in a PPP solution. &#8216;3.0&#8217; meters may be an appropriate choice for that. If the maximum is exceeded, contributions from the corresponding observation will be ignored in the PPP solution.</p>
     3794</div>
     3795<div class="section" id="phase-observations-mandatory">
     3796<span id="index-33"></span><h5>Phase Observations - mandatory<a class="headerlink" href="#phase-observations-mandatory" title="Permalink to this headline">¶</a></h5>
     3797<p>Enter a &#8216;Sigma L1&#8217; for L1 phase observations in meters. The bigger the sigma you enter, the less the contribution of L1 phase observations to a PPP solutions based on a combination of code and phase data. &#8216;0.01&#8217; meters is likely to be an appropriate choice. Specify a maximum for residuals &#8216;Max Res L1&#8217; for L1 phase observations in a PPP solution. &#8216;0.03&#8217; meters may be an appropriate choice for that. If the maximum is exceeded, contributions from the corresponding observation will be ignored in the PPP solution.</p>
     3798<p>As the convergence characteristic of a PPP solution can be influenced by the ratio of sigmas for code and phase, you may like to introduce sigmas which differ from the default values:</p>
     3799<ul class="simple">
    35623800<li>Introducing a smaller sigma (higher accuracy) for code observations or a bigger sigma for phase observations leads to better results shortly after program start. However, it may take more time until you finally get the best possible solution.</li>
    35633801<li>Introducing a bigger sigma (lower accuracy) for code observations or a smaller sigma for phase observations may lead to less accurate results shortly after program start and thus a prolonged period of convergence but could provide better positions in the long run.</li>
    35643802</ul>
    3565 </p>
    3566 
    3567 <p><h4>2.13.3.4 <a name="pppeleweight">Elevation Dependent Weighting - mandatory</h4></p>
    3568 <p>
    3569 BNC allows elevation dependent weighting when processing GNSS observations. A weight function
    3570 </p>
    3571 
    3572 <p>&nbsp; &nbsp; &nbsp; P = cos&sup2; * z</p>
    3573 
    3574 <p>
    3575 with 'z' being the zenith distance to the involved satellite can be applied instead of the simple weight function 'P = 1' independent from satellite elevation angles.
    3576 </p>
    3577 <ul>
    3578 <li>Tick 'Ele Wgt Code' if you want Elevation Dependent Weighting for code observations.</li>
    3579 <li>Tick 'Ele Wgt Phase' if you want Elevation Dependent Weighting for phase observations.</li>
    3580 </ul>
    3581 <p>
    3582 Default is using the plain weight function 'P = 1' for code and phase observations.
    3583 </p>
    3584 
    3585 <p><h4>2.13.3.5 <a name="pppminobs">Minimum Number of Observations - mandatory</h4></p>
    3586 <p>
    3587 Select the minimum number of observations you want to use per epoch. The minimum for parameter 'Min # of Obs' is 4. This is also the default.
    3588 </p>
    3589 
    3590 <p><h4>2.13.3.6 <a name="pppmineleva">Minimum Elevation - mandatory</h4></p>
    3591 <p>
    3592 Select a minimum for satellite elevation angles. Selecting '10 deg' for option 'Min Elevation' may be an appropriate choice.
    3593 </p>
    3594 <p>
    3595 Default is '0 deg', meaning that any observation will be used regardless of the involved satellite elevation angle.
    3596 </p>
    3597 
    3598 <p><h4>2.13.3.7 <a name="pppwaitclockcorr">Wait for Clock Corrections - optional</h4></p>
    3599 <p>
    3600 Specifying 'no' for option 'Wait for clock corr.' means that BNC processes each epoch of data immediately after its arrival using satellite clock corrections available at that time. A non-zero value means that epochs of data are buffered and the processing of each epoch is postponed until satellite clock corrections not older than 'Wait for clock corr.' seconds are available. Specifying a value of half the update rate of the clock corrections (e.g. 5 sec) may be appropriate. Note that this causes an additional delay of the PPP solutions in the amount of half of the update rate.
    3601 </p>
    3602 <p>
    3603 Using observations in sync with the corrections can avoid a possible high frequency noise of PPP solutions. Such noise could result from processing observations regardless of how late after a clock correction they were received. Note that applying the 'Wait for clock corr.' option significantly reduces the PPP computation effort for BNC.
    3604 </p>
    3605 <p>
    3606 Default is an empty option field, meaning that you want BNC to process observations immediately after their arrival through applying the latest received clock correction.
    3607 </p>
    3608 
    3609 <p><h4>2.13.3.8 <a name="pppseeding">Seeding - optional if a priori coordinates specified in 'Coordinates file'</h4></p>
    3610 <p>
    3611 Enter the length of a startup period in seconds for which you want to fix the PPP solution to a known position, see option 'Coordinates file'. Constraining a priori coordinates is done in BNC through setting their white 'Noise' temporarily to zero.
    3612 </p>
    3613 <p>
    3614 This so-called <u>Quick-Start</u> option allows the PPP solutions to rapidly converge after startup. It requires that the antenna remains unmoved on the known position throughout the defined period. A value of '60' seconds is likely to be an appropriate choice for 'Seeding'. Default is an empty option field, meaning that you do not want BNC to start in Quick-Start mode.
    3615 <p>
    3616 You may need to create your own reference coordinate beforehand through running BNC for an hour in normal mode before applying the 'Seeding' option. Do not forget to introduce realistic North/East/Up sigmas under panel 'PPP (2)' corresponding to the coordinate's precision.
    3617 </p>
    3618 
    3619 <p>
    3620 'Seeding' has also a function for <u>bridging gaps</u> in PPP solutions from failures caused e.g. by longer lasting outages. Should the time span between two consecutive solutions exceed the limit of 60 seconds (maximum solution gap, hard-wired), the algorithm fixes the latest derived coordinate for a period of 'Seeding' seconds. This option avoids time-consuming reconvergences and makes especially sense for stationary operated receivers where convergence can be enforced because a good approximation for the receiver position is known. 
    3621 </p>
    3622 
    3623 <p>
    3624 The following figure provides the screenshot of an example PPP session with BNC.
    3625 </p>
    3626 
    3627 <p><img src="IMG/screenshot22.png"/></p>
    3628 <p><u>Figure 25:</u> Precise Point Positioning with BNC in 'Quick-Start' mode, PPP Panel 4</p>
    3629 
    3630 <p><h4>2.13.4 <a name="pppPlots">PPP (4): Plots</h4></p>
    3631 <p>
    3632 This panel presents options for visualizing PPP results as a time series plot or as a track map with PPP tracks on top of OSM or Google maps.
    3633 </p>
    3634 
    3635 <p><h4>2.13.4.1 <a name="ppptimeseries">PPP Plot - optional</h4></p>
    3636 <p>
    3637 PPP time series of North (red), East (green) and Up (blue) displacements will be plotted under the 'PPP Plot' tab when a 'Mountpoint' is specified. Values will be referred to an XYZ reference coordinate (if specified, see 'Coordinates file'). The sliding PPP time series window will cover the period of the latest 5 minutes.
    3638 </p>
    3639 <p>
    3640 Note that a PPP dicplacements time series makes only sense for a stationary operated receiver.
    3641 </p>
    3642 
    3643 <p><h4>2.13.4.2 <a name="pppaudioresp">Audio Response - optional</h4></p>
    3644 <p>
    3645 For natural hazard prediction and monitoring landslides, it may be appropriate to generate audio alerts. For that you can specify an 'Audio response' threshold in meters. A beep is produced by BNC whenever a horizontal PPP coordinate component differs by more than the threshold value from the specified marker coordinate.
    3646 </p>
    3647 <p>
    3648 Default is an empty option field, meaning that you do not want BNC to produce acoustic warnings.
    3649 </p>
    3650 
    3651 <p><h4>2.13.4.3 <a name="ppptrackmap">Track Map - optional</h4></p>
    3652 <p>
    3653 You may like to track your rover position using Google Maps or OpenStreetMap as a background map. Track maps can be produced with BNC in 'Real-time Streams' mode or in 'RINEX Files' post processing mode with data coming from files.
    3654 </p>
    3655 <p>
    3656 Even when in 'RINEX Files' post processing mode, you should not forget to go online with your host and specify a proxy under the 'Network' panel if that is operated in front of BNC.
    3657 </p>
    3658 <p>
    3659 The 'Open Map' button opens a window showing a map according to the selected 'Google/OSM' option.
    3660 </p>
    3661 
    3662 <p><img src="IMG/screenshot32.png"/></p>
    3663 <p><u>Figure 26:</u> Track of positions from BNC with Google Maps in background</p>
    3664 
    3665 <p><h4>2.13.4.3.1 <a name="pppmaptype">Google/OSM - mandatory before pushing 'Open Map'</h4></p>
    3666 <p>
    3667 Select either 'Google' or 'OSM' as the background map for your rover positions.
    3668 </p>
    3669 
    3670 <p><img src="IMG/screenshot41.png"/></p>
    3671 <p><u>Figure 27:</u> Example for background map from Google Maps and OpenStreetMap (OSM)</p>
    3672 
    3673 <p><h4>2.13.4.4 <a name="pppdotprop">Dot-properties - mandatory before pushing 'Open Map'</h4></p>
    3674 <p>
    3675 PPP tracks are presented on maps through plotting one colored dot per observation epoch.
    3676 </p>
    3677 
    3678 <p><h4>2.13.4.4.1 <a name="pppdotsize">Size - mandatory before pushing 'Open Map'</h4></p>
    3679 <p>
    3680 Specify the size of dots showing the rover position. A dot size of '3' may be appropriate. The maximum possible dot size is '10'. An empty option field or a size of '0' would mean that you do not want BNC to show the rover's track on the map.
    3681 </p>
    3682 
    3683 <p><h4>2.13.4.4.2 <a name="pppdotcolor">Color - mandatory before pushing 'Open Map'</h4></p>
    3684 <p>
    3685 Select the color of dots showing the rover track.
    3686 </p>
    3687 
    3688 <p><h4>2.13.4.5 <a name="pppspeed">Post Processing Speed - mandatory before pushing 'Open Map'</h4></p>
    3689 <p>
    3690 With BNC in PPP 'RINEX File' post processing mode, you can specify the speed of computations as appropriate for visualization. Note that you can adjust 'Post-processing speed' on-the-fly while BNC is already processing your observations.
    3691 </p>
    3692 
    3693 <p><h4>2.14 <a name="combi">Combine Corrections</h4></p>
    3694 <p>
    3695 BNC allows processing several orbit and clock correction streams in real-time to produce, encode, upload and save a combination of Broadcast Corrections from various providers. All corrections must refer to satellite Antenna Phase Centers (APC). It is so far only the satellite clock corrections which are combined by BNC while orbit corrections in the combination product as well as product update rates are just taken over from one of the incoming Broadcast Correction streams. Combining only clock corrections using a fixed orbit reference imposes the potential to introduce some analysis inconsistencies. We may therefore eventually consider improvements on this approach. The clock combination can be based either on a plain 'Single-Epoch' or on a Kalman 'Filter' approach.
    3696 </p>
    3697 <p>
    3698 In the Kalman Filter approach, satellite clocks estimated by individual Analyses Centers (ACs) are used as pseudo observations within the adjustment process. Each observation is modeled as a linear function (actually a simple sum) of three estimated parameters: AC specific offset, satellite specific offset common to all ACs, and the actual satellite clock correction, which represents the result of the combination. These three parameter types differ in their statistical properties. The satellite clock offsets are assumed to be static parameters while AC specific and satellite specific offsets are stochastic parameters affected by white noise.
    3699 </p>
    3700 <p>
    3701 The solution is regularized by a set of minimal constraints. In case of a change of the 'SSR Provider ID', 'SSR Solution ID', or 'IOD SSR' (see section 'Upload Corrections'), the satellite clock offsets belonging to the corresponding analysis center are reset in the adjustment.
    3702 </p>
    3703 <p>
    3704 Removing the AC-dependent biases as well as possible is a major issue with clock combinations. Since they vary in time, it can be tricky to do this. Otherwise, there will be artificial jumps in the combined clock stream if one or more AC contributions drop out for certain epochs. Here the Kalman Filter approach is expected to do better than the Single-Epoch approach.
    3705 </p>
    3706 <p>
    3707 In view of IGS real-time products, the 'Combine Corrections' functionality has been integrated in BNC (Weber and Mervart 2010) because
    3708 <ul>
     3803</div>
     3804<div class="section" id="elevation-dependent-weighting-mandatory">
     3805<span id="index-34"></span><h5>Elevation Dependent Weighting - mandatory<a class="headerlink" href="#elevation-dependent-weighting-mandatory" title="Permalink to this headline">¶</a></h5>
     3806<p>BNC allows elevation dependent weighting when processing GNSS observations. A weight function</p>
     3807<div class="math">
     3808\[P = cos^2 * z\]</div>
     3809<p>with <span class="math">\(z\)</span> being the zenith distance to the involved satellite can be applied instead of the simple weight function &#8216;P = 1&#8217; independent from satellite elevation angles:</p>
     3810<ul class="simple">
     3811<li>Tick &#8216;Ele Wgt Code&#8217; if you want Elevation Dependent Weighting for code observations.</li>
     3812<li>Tick &#8216;Ele Wgt Phase&#8217; if you want Elevation Dependent Weighting for phase observations.</li>
     3813</ul>
     3814<p>Default is using the plain weight function &#8216;P = 1&#8217; for code and phase observations.</p>
     3815</div>
     3816<div class="section" id="minimum-number-of-observations-mandatory">
     3817<h5>Minimum Number of Observations - mandatory<a class="headerlink" href="#minimum-number-of-observations-mandatory" title="Permalink to this headline">¶</a></h5>
     3818<p>Select the minimum number of observations you want to use per epoch. The minimum for parameter &#8216;Min # of Obs&#8217; is 4. This is also the default.</p>
     3819</div>
     3820<div class="section" id="minimum-elevation-mandatory">
     3821<h5>Minimum Elevation - mandatory<a class="headerlink" href="#minimum-elevation-mandatory" title="Permalink to this headline">¶</a></h5>
     3822<p>Select a minimum for satellite elevation angles. Selecting &#8216;10 deg&#8217; for option &#8216;Min Elevation&#8217; may be an appropriate choice. Default is &#8216;0 deg&#8217;, meaning that any observation will be used regardless of the involved satellite elevation angle.</p>
     3823</div>
     3824<div class="section" id="wait-for-clock-corrections-optional">
     3825<span id="index-35"></span><h5>Wait for Clock Corrections - optional<a class="headerlink" href="#wait-for-clock-corrections-optional" title="Permalink to this headline">¶</a></h5>
     3826<p>Specifying &#8216;no&#8217; for option &#8216;Wait for clock corr.&#8217; means that BNC processes each epoch of data immediately after arrival using satellite clock corrections available at that time. A non-zero value means that epochs of data are buffered and the processing of each epoch is postponed until satellite clock corrections not older than &#8216;Wait for clock corr.&#8217; seconds are available. Specifying a value of half the update rate of the clock corrections (e.g. 5 sec) may be appropriate. Note that this causes an additional delay of the PPP solutions in the amount of half of the update rate.</p>
     3827<p>Using observations in sync with the corrections can avoid a possible high frequency noise of PPP solutions. Such noise could result from processing observations regardless of how late after a clock correction they were received. Note that applying the &#8216;Wait for clock corr.&#8217; option significantly reduces the PPP computation effort for BNC.</p>
     3828<p>Default is an empty option field, meaning that you want BNC to process observations immediately after their arrival through applying the latest received clock correction.</p>
     3829</div>
     3830<div class="section" id="seeding-optional-if-a-priori-coordinates-specified-in-coordinates-file">
     3831<h5>Seeding - optional if a priori coordinates specified in &#8216;Coordinates file&#8217;<a class="headerlink" href="#seeding-optional-if-a-priori-coordinates-specified-in-coordinates-file" title="Permalink to this headline">¶</a></h5>
     3832<p>Enter the length of a startup period in seconds for which you want to fix the PPP solution to a known position, see option &#8216;Coordinates file&#8217;. Constraining a priori coordinates is done in BNC through setting their white &#8216;Noise&#8217; temporarily to zero.</p>
     3833<p>This so-called Quick-Start option allows the PPP solutions to rapidly converge after startup. It requires that the antenna remains unmoved on the known position throughout the defined period. A value of &#8216;60&#8217; seconds is likely to be an appropriate choice for &#8216;Seeding&#8217;. Default is an empty option field, meaning that you do not want BNC to start in Quick-Start mode.</p>
     3834<p>You may need to create your own reference coordinate beforehand through running BNC for an hour in normal mode before applying the &#8216;Seeding&#8217; option. Do not forget to introduce realistic North/East/Up sigmas under panel &#8216;PPP (2)&#8217; corresponding to the coordinate&#8217;s precision.</p>
     3835<p>&#8216;Seeding&#8217; has also a function for bridging gaps in PPP solutions from failures caused e.g. by longer lasting outages. Should the time span between two consecutive solutions exceed the limit of 60 seconds (maximum solution gap, hard-wired), the algorithm fixes the latest derived coordinate for a period of &#8216;Seeding&#8217; seconds. This option avoids time-consuming reconvergences and makes especially sense for stationary operated receivers where convergence can be enforced because a good approximation for the receiver position is known.</p>
     3836<p><a class="reference internal" href="#fig-25"><span class="std std-numref">Fig. 27</span></a> provides the screenshot of an example PPP session with BNC showing the beginning of a time series plot when seeding is set to 30 seconds..</p>
     3837<div class="figure" id="id50">
     3838<span id="fig-25"></span><a class="reference internal image-reference" href="_images/fig_25.png"><img alt="_images/fig_25.png" src="_images/fig_25.png" style="width: 1260.0px; height: 740.0px;" /></a>
     3839<p class="caption"><span class="caption-number">Fig. 27 </span><span class="caption-text">Precise Point Positioning with BNC in &#8216;Quick-Start&#8217; mode, PPP Panel 4</span></p>
     3840</div>
     3841</div>
     3842</div>
     3843<div class="section" id="ppp-4-plots">
     3844<span id="index-36"></span><h4>PPP (4): Plots<a class="headerlink" href="#ppp-4-plots" title="Permalink to this headline">¶</a></h4>
     3845<p>This panel presents options for visualizing PPP results as a time series plot or as a track map with PPP tracks on top of OSM or Google maps.</p>
     3846<div class="section" id="ppp-plot-optional">
     3847<h5>PPP Plot - optional<a class="headerlink" href="#ppp-plot-optional" title="Permalink to this headline">¶</a></h5>
     3848<p>PPP time series of North (red), East (green) and Up (blue) displacements will be plotted under the &#8216;PPP Plot&#8217; tab when a &#8216;Mountpoint&#8217; is specified. Values will be referred to an XYZ reference coordinate (if specified, see &#8216;Coordinates file&#8217;). The sliding PPP time series window will cover the period of the latest 5 minutes. Note that a PPP dicplacements time series makes only sense for a stationary operated receiver.</p>
     3849</div>
     3850<div class="section" id="audio-response-optional">
     3851<h5>Audio Response - optional<a class="headerlink" href="#audio-response-optional" title="Permalink to this headline">¶</a></h5>
     3852<p>For natural hazard prediction and monitoring landslides, it may be appropriate to generate audio alerts. For that you can specify an &#8216;Audio response&#8217; threshold in meters. A beep is produced by BNC whenever a horizontal PPP coordinate component differs by more than the threshold value from the specified marker coordinate. Default is an empty option field, meaning that you do not want BNC to produce acoustic warnings.</p>
     3853</div>
     3854<div class="section" id="track-map-optional">
     3855<h5>Track Map - optional<a class="headerlink" href="#track-map-optional" title="Permalink to this headline">¶</a></h5>
     3856<p>You may like to track your rover position using Google Maps or OpenStreetMap as a background map. Track maps (example <a class="reference internal" href="#fig-26"><span class="std std-numref">Fig. 28</span></a>) can be produced with BNC in &#8216;Real-time Streams&#8217; mode or in &#8216;RINEX Files&#8217; post processing mode with data coming from files.</p>
     3857<div class="figure" id="id51">
     3858<span id="fig-26"></span><a class="reference internal image-reference" href="_images/fig_26.png"><img alt="_images/fig_26.png" src="_images/fig_26.png" style="width: 999.0px; height: 743.0px;" /></a>
     3859<p class="caption"><span class="caption-number">Fig. 28 </span><span class="caption-text">Track of positions from BNC with Google Maps in background</span></p>
     3860</div>
     3861</div>
     3862<div class="section" id="google-osm-mandatory-before-pushing-open-map">
     3863<h5>Google/OSM - mandatory before pushing &#8216;Open Map&#8217;<a class="headerlink" href="#google-osm-mandatory-before-pushing-open-map" title="Permalink to this headline">¶</a></h5>
     3864<p>Select either &#8216;Google&#8217; or &#8216;OSM&#8217; as the background map for your rover positions <a class="reference internal" href="#fig-27"><span class="std std-numref">(Fig. 29)</span></a>.</p>
     3865<div class="figure" id="id52">
     3866<span id="fig-27"></span><a class="reference internal image-reference" href="_images/fig_27.png"><img alt="_images/fig_27.png" src="_images/fig_27.png" style="width: 999.0px; height: 513.0px;" /></a>
     3867<p class="caption"><span class="caption-number">Fig. 29 </span><span class="caption-text">Example for background map from Google Maps and OpenStreetMap (OSM)</span></p>
     3868</div>
     3869</div>
     3870<div class="section" id="dot-properties-mandatory-before-pushing-open-map">
     3871<h5>Dot-properties - mandatory before pushing &#8216;Open Map&#8217;<a class="headerlink" href="#dot-properties-mandatory-before-pushing-open-map" title="Permalink to this headline">¶</a></h5>
     3872<p>PPP tracks are presented on maps through plotting one colored dot per observation epoch.</p>
     3873</div>
     3874<div class="section" id="size-mandatory-before-pushing-open-map">
     3875<h5>Size - mandatory before pushing &#8216;Open Map&#8217;<a class="headerlink" href="#size-mandatory-before-pushing-open-map" title="Permalink to this headline">¶</a></h5>
     3876<p>Specify the size of dots showing the rover position. A dot size of &#8216;3&#8217; may be appropriate. The maximum possible dot size is &#8216;10&#8217;. An empty option field or a size of &#8216;0&#8217; would mean that you do not want BNC to show the rover&#8217;s track on the map.</p>
     3877</div>
     3878<div class="section" id="color-mandatory-before-pushing-open-map">
     3879<h5>Color - mandatory before pushing &#8216;Open Map&#8217;<a class="headerlink" href="#color-mandatory-before-pushing-open-map" title="Permalink to this headline">¶</a></h5>
     3880<p>Select the color of dots showing the rover track.</p>
     3881</div>
     3882<div class="section" id="post-processing-speed-mandatory-before-pushing-open-map">
     3883<h5>Post Processing Speed - mandatory before pushing &#8216;Open Map&#8217;<a class="headerlink" href="#post-processing-speed-mandatory-before-pushing-open-map" title="Permalink to this headline">¶</a></h5>
     3884<p>With BNC in PPP &#8216;RINEX File&#8217; post processing mode, you can specify the speed of computations as appropriate for visualization. Note that you can adjust &#8216;Post-processing speed&#8217; on-the-fly while BNC is already processing your observations.</p>
     3885</div>
     3886</div>
     3887</div>
     3888<div class="section" id="combine-corrections">
     3889<span id="index-37"></span><h3>Combine Corrections<a class="headerlink" href="#combine-corrections" title="Permalink to this headline">¶</a></h3>
     3890<p>BNC allows processing several orbit and clock correction streams in real-time to produce, encode, upload and save a combination of Broadcast Corrections from various providers. All corrections must refer to satellite Antenna Phase Centers (APC). It is so far only the satellite clock corrections which are combined by BNC while orbit corrections in the combination product as well as product update rates are just taken over from one of the incoming Broadcast Correction streams. Combining only clock corrections using a fixed orbit reference imposes the potential to introduce some analysis inconsistencies. We may therefore eventually consider improvements on this approach. The clock combination can be based either on a plain &#8216;Single-Epoch&#8217; or on a Kalman &#8216;Filter&#8217; approach.</p>
     3891<p>In the Kalman Filter approach, satellite clocks estimated by individual Analyses Centers (ACs) are used as pseudo observations within the adjustment process. Each observation is modeled as a linear function (actually a simple sum) of three estimated parameters: AC specific offset, satellite specific offset common to all ACs, and the actual satellite clock correction, which represents the result of the combination. These three parameter types differ in their statistical properties. The satellite clock offsets are assumed to be static parameters while AC specific and satellite specific offsets are stochastic parameters affected by white noise.</p>
     3892<p>The solution is regularized by a set of minimal constraints. In case of a change of the &#8216;SSR Provider ID&#8217;, &#8216;SSR Solution ID&#8217;, or &#8216;IOD SSR&#8217; (see section &#8216;Upload Corrections&#8217;), the satellite clock offsets belonging to the corresponding analysis center are reset in the adjustment.</p>
     3893<p>Removing the AC-dependent biases as well as possible is a major issue with clock combinations. Since they vary in time, it can be tricky to do this. Otherwise, there will be artificial jumps in the combined clock stream if one or more AC contributions drop out for certain epochs. Here the Kalman Filter approach is expected to do better than the Single-Epoch approach.</p>
     3894<p>In view of IGS real-time products, the &#8216;Combine Corrections&#8217; functionality has been integrated in BNC <a class="reference internal" href="bnchelp.html#mervart2011a" id="id12">[10]</a> because:</p>
     3895<ul class="simple">
    37093896<li>The software with its Graphic User Interface and range of supported Operating Systems represents a perfect platform to process many Broadcast Correction streams in parallel;</li>
    37103897<li>Outages of single AC product streams can be mitigated through merging several incoming streams into a combined product;</li>
    … …  
    37163903<li>It provides the means to output SP3 and Clock RINEX files containing precise orbit and clock information for further processing using other tools than BNC.</li>
    37173904</ul>
    3718 </p>
    3719 <p>
    3720 Note that the combination process requires real-time access to Broadcast Ephemeris. Therefore, in addition to the orbit and clock correction streams BNC must pull a stream carrying Broadcast Ephemeris in the form of RTCM Version 3 messages. Stream 'RTCM3EPH' on caster <u>products.igs-ip.net</u> is an example for that. Note further that BNC will ignore incorrect or outdated Broadcast Ephemeris data when necessary, leaving a note 'WRONG EPHEMERIS' or 'OUTDATED EPHEMERIS' in the logfile.
    3721 </p>
    3722 
    3723 <p>
    3724 A combination is carried out following a specified sampling interval. BNC waits for incoming Broadcast Corrections for the period of one such interval. Corrections received later than that will be ignored. If incoming streams have different rates, only epochs that correspond to the sampling interval are used.
    3725 </p>
    3726 
    3727 <p>
    3728 With respect to IGS, it is important to understand that a major effect in the combination of GNSS orbit and clock correction streams is the selection of ACs to include. It is likely that a combination product could be improved in accuracy by using only the best two or three ACs. However, with only a few ACs to depend on, the reliability of the combination product could suffer and the risk of total failures increases. So there is an important tradeoff here that must be considered when selecting streams for a combination. The major strength of a combination product is its reliability and stable median performance which can be much better than that of any single AC product.
    3729 </p>
    3730 <p>
    3731 This comment applies in situations where we have a limited number of solutions to combine and their quality varies significantly. The situation may be different when the total number of ACs is larger and the range of AC variation is smaller. In that case, a standard full combination is probably the best.
    3732 </p>
    3733 <p>
    3734 The following recursive algorithm is used to detect orbit outliers in the Kalman Filter combination when Broadcast Corrections are provided by several ACs:
    3735 <br>
    3736 Step 1: We do not produce a combination for a certain satellite if only one AC provides corrections for it.
    3737 <br>
    3738 Step 2: A mean satellite position is calculated as the average of positions from all ACs.
    3739 <br>
    3740 Step 3: For each AC and satellite, the 3D distance between individual and mean satellite position is calculated.
    3741 <br>
    3742 Step 4: We find the greatest difference between AC specific and mean satellite positions.
    3743 <br>
    3744 Step 5: If that is less than a threshold, the conclusion is that we do not have an outlier and can proceed to the next epoch.
    3745 <br>
    3746 Step 6: If that is greater than a threshold, then corrections of the affiliated AC are ignored for the affected epoch and the outlier detection restarts with step 1.
    3747 </p>
    3748 <p>
    3749 The following screenshot shows an example setup of BNC when combining Broadcast Correction streams CLK11, CLK21, CLK91, and CLK80.
    3750 </p>
    3751 
    3752 <p><img src="IMG/screenshot20.png"/></p>
    3753 <p><u>Figure 28:</u> BNC combining Broadcast Correction streams</p>
    3754 <p></p>
    3755 <p>
    3756 Note that BNC can produce an internal PPP solution from combined Broadcast Corrections. For that you have to specify the keyword 'INTERNAL' as 'Corrections stream' in the PPP (1) panel. The following example combines correction streams IGS01 and IGS02 and simultaneously carries out a PPP solution with observations from stream FFMJ1 to allow monitoring the quality of the combination product in the space domain.
    3757 </p>
    3758 <p><img src="IMG/screenshot23.png"/></p>
    3759 <p><u>Figure 29:</u> 'INTERNAL' PPP with BNC using a combination of Broadcast Corrections</p>
    3760 
    3761 <p><h4>2.14.1 <a name="combimounttab">Combine Corrections Table - optional</h4></p>
    3762 <p>
    3763 Hit the 'Add Row' button, double click on the 'Mountpoint' field, enter a Broadcast Correction mountpoint from the 'Streams' section and hit Enter. Then double click on the 'AC Name' field to enter your choice of an abbreviation for the Analysis Center (AC) providing the Antenna Phase Center (APC) related correction stream. Finally, double click on the 'Weight' field to enter a weight to be applied to this stream in the combination.
    3764 </p>
    3765 <p>
    3766 The sequence of entries in the 'Combine Corrections' table is not of importance. Note that the orbit information in the final combination stream is just copied from one of the incoming streams. The stream used for providing the orbits may vary over time: if the orbit-providing stream has an outage then BNC switches to the next remaining stream for getting hold of the orbit information.</p>
    3767 <p>
    3768 It is possible to specify only one Broadcast Ephemeris correction stream in the 'Combine Corrections' table. Instead of combining corrections from several sources, BNC will then merge the single corrections stream with Broadcast Ephemeris to allow saving results in SP3 and/or Clock RINEX format when specified accordingly under the 'Upload Corrections' panel. Note that in such a BNC application you must not pull more than one Broadcast Ephemeris correction stream even if a second stream would provide the same corrections from a backup caster.
    3769 </p>
    3770 <p>
    3771 Default is an empty 'Combine Corrections' table, meaning that you do not want BNC to combine orbit and clock correction streams.
    3772 </p>
    3773 
    3774 <p><h4>2.14.1.1 <a name="combiadd">Add Row, Delete - optional</h4></p>
    3775 <p>
    3776 Hit 'Add Row' button to add another row to the 'Combine Corrections' table or hit the 'Delete' button to delete the highlighted row(s).
    3777 </p>
    3778 
    3779 <p><h4>2.14.1.2 <a name="combimethod">Method - mandatory if 'Combine Corrections' table is populated</h4></p>
    3780 <p>
    3781 Select a clock combination method. Available options are Kalman 'Filter' and 'Single-Epoch. It is suggested to use the Kalman Filter approach in case the combined stream of Broadcast Corrections is intended for Precise Point Positioning.
    3782 </p>
    3783 
    3784 <p><h4>2.14.1.3 <a name="combimax">Maximal Residuum - mandatory if 'Combine Corrections' table is populated</h4></p>
    3785 
    3786 <p>BNC combines all incoming clocks according to specified weights. Individual clock estimates that differ by more than 'Maximal Residuum' meters from the average of all clocks will be ignored.<p>
    3787 </p>It is suggested to specify a value of about 0.2 m for the Kalman Filter combination approach and a value of about 3.0 meters for the Single-Epoch combination approach.</p>
    3788 <p>Default is a 'Maximal Residuum' of 999.0 meters.</p>
    3789 
    3790 <p><h4>2.14.1.4 <a name="combismpl">Sampling - mandatory if 'Combine Corrections' table is populated</h4></p>
     3905<p>Note that the combination process requires real-time access to Broadcast Ephemeris. Therefore, in addition to the orbit and clock correction streams BNC must pull a stream carrying Broadcast Ephemeris in the form of RTCM Version 3 messages. Stream &#8216;RTCM3EPH&#8217; on caster products.igs-ip.net is an example for that. Note further that BNC will ignore incorrect or outdated Broadcast Ephemeris data when necessary, leaving a note &#8216;WRONG EPHEMERIS&#8217; or &#8216;OUTDATED EPHEMERIS&#8217; in the logfile.</p>
     3906<p>A combination is carried out following a specified sampling interval. BNC waits for incoming Broadcast Corrections for the period of one such interval. Corrections received later than that will be ignored. If incoming streams have different rates, only epochs that correspond to the sampling interval are used.</p>
     3907<p>With respect to IGS, it is important to understand that a major effect in the combination of GNSS orbit and clock correction streams is the selection of ACs to include. It is likely that a combination product could be improved in accuracy by using only the best two or three ACs. However, with only a few ACs to depend on, the reliability of the combination product could suffer and the risk of total failures increases. So there is an important tradeoff here that must be considered when selecting streams for a combination. The major strength of a combination product is its reliability and stable median performance which can be much better than that of any single AC product.</p>
     3908<p>This comment applies in situations where we have a limited number of solutions to combine and their quality varies significantly. The situation may be different when the total number of ACs is larger and the range of AC variation is smaller. In that case, a standard full combination is probably the best.</p>
     3909<p>The following recursive algorithm is used to detect orbit outliers in the Kalman Filter combination when Broadcast Corrections are provided by several ACs:</p>
     3910<ol class="arabic simple">
     3911<li>We do not produce a combination for a certain satellite if only one AC provides corrections for it.</li>
     3912<li>A mean satellite position is calculated as the average of positions from all ACs.</li>
     3913<li>For each AC and satellite, the 3D distance between individual and mean satellite position is calculated.</li>
     3914<li>We find the greatest difference between AC specific and mean satellite positions.</li>
     3915<li>If that is less than a threshold, the conclusion is that we do not have an outlier and can proceed to the next epoch.</li>
     3916<li>If that is greater than a threshold, then corrections of the affiliated AC are ignored for the affected epoch and the outlier detection restarts with 1.</li>
     3917</ol>
     3918<p>The screenshot in <a class="reference internal" href="#fig-28"><span class="std std-numref">Fig. 30</span></a> shows an example setup of BNC when combining Broadcast Correction streams CLK11, CLK21, CLK91, and CLK80.</p>
     3919<div class="figure" id="id53">
     3920<span id="fig-28"></span><a class="reference internal image-reference" href="_images/fig_28.png"><img alt="_images/fig_28.png" src="_images/fig_28.png" style="width: 1120.0px; height: 843.0px;" /></a>
     3921<p class="caption"><span class="caption-number">Fig. 30 </span><span class="caption-text">BNC combining Broadcast Correction streams</span></p>
     3922</div>
     3923<p>Note that BNC can produce an internal PPP solution from combined Broadcast Corrections. For that you have to specify the keyword &#8216;INTERNAL&#8217; as &#8216;Corrections stream&#8217; in the PPP (1) panel. The example in <a class="reference internal" href="#fig-29"><span class="std std-numref">Fig. 31</span></a> combines correction streams IGS01 and IGS02 and simultaneously carries out a PPP solution with observations from stream FFMJ1 to allow monitoring the quality of the combination product in the space domain.</p>
     3924<div class="figure" id="id54">
     3925<span id="fig-29"></span><a class="reference internal image-reference" href="_images/fig_29.png"><img alt="_images/fig_29.png" src="_images/fig_29.png" style="width: 1000.0px; height: 900.0px;" /></a>
     3926<p class="caption"><span class="caption-number">Fig. 31 </span><span class="caption-text">&#8216;INTERNAL&#8217; PPP with BNC using a combination of Broadcast Corrections</span></p>
     3927</div>
     3928<div class="section" id="combine-corrections-table-optional">
     3929<h4>Combine Corrections Table - optional<a class="headerlink" href="#combine-corrections-table-optional" title="Permalink to this headline">¶</a></h4>
     3930<p>Hit the &#8216;Add Row&#8217; button, double click on the &#8216;Mountpoint&#8217; field, enter a Broadcast Correction mountpoint from the &#8216;Streams&#8217; section and hit Enter. Then double click on the &#8216;AC Name&#8217; field to enter your choice of an abbreviation for the Analysis Center (AC) providing the Antenna Phase Center (APC) related correction stream. Finally, double click on the &#8216;Weight&#8217; field to enter a weight to be applied to this stream in the combination.</p>
     3931<p>The sequence of entries in the &#8216;Combine Corrections&#8217; table is not of importance. Note that the orbit information in the final combination stream is just copied from one of the incoming streams. The stream used for providing the orbits may vary over time: if the orbit-providing stream has an outage then BNC switches to the next remaining stream for getting hold of the orbit information.</p>
     3932<p>It is possible to specify only one Broadcast Ephemeris correction stream in the &#8216;Combine Corrections&#8217; table. Instead of combining corrections from several sources, BNC will then merge the single corrections stream with Broadcast Ephemeris to allow saving results in SP3 and/or Clock RINEX format when specified accordingly under the &#8216;Upload Corrections&#8217; panel. Note that in such a BNC application you must not pull more than one Broadcast Ephemeris correction stream even if a second stream would provide the same corrections from a backup caster.</p>
     3933<p>Default is an empty &#8216;Combine Corrections&#8217; table, meaning that you do not want BNC to combine orbit and clock correction streams.</p>
     3934</div>
     3935<div class="section" id="add-row-delete-optional">
     3936<h4>Add Row, Delete - optional<a class="headerlink" href="#add-row-delete-optional" title="Permalink to this headline">¶</a></h4>
     3937<p>Hit &#8216;Add Row&#8217; button to add another row to the &#8216;Combine Corrections&#8217; table or hit the &#8216;Delete&#8217; button to delete the highlighted row(s).</p>
     3938</div>
     3939<div class="section" id="method-mandatory-if-combine-corrections-table-is-populated">
     3940<h4>Method - mandatory if &#8216;Combine Corrections&#8217; table is populated<a class="headerlink" href="#method-mandatory-if-combine-corrections-table-is-populated" title="Permalink to this headline">¶</a></h4>
     3941<p>Select a clock combination method. Available options are Kalman &#8216;Filter&#8217; and &#8216;Single-Epoch. It is suggested to use the Kalman Filter approach in case the combined stream of Broadcast Corrections is intended for Precise Point Positioning.</p>
     3942</div>
     3943<div class="section" id="maximal-residuum-mandatory-if-combine-corrections-table-is-populated">
     3944<h4>Maximal Residuum - mandatory if &#8216;Combine Corrections&#8217; table is populated<a class="headerlink" href="#maximal-residuum-mandatory-if-combine-corrections-table-is-populated" title="Permalink to this headline">¶</a></h4>
     3945<p>BNC combines all incoming clocks according to specified weights. Individual clock estimates that differ by more than &#8216;Maximal Residuum&#8217; meters from the average of all clocks will be ignored. It is suggested to specify a value of about 0.2 m for the Kalman Filter combination approach and a value of about 3.0 meters for the Single-Epoch combination approach. Default is a &#8216;Maximal Residuum&#8217; of 999.0 meters.</p>
     3946</div>
     3947<div class="section" id="sampling-mandatory-if-combine-corrections-table-is-populated">
     3948<h4>Sampling - mandatory if &#8216;Combine Corrections&#8217; table is populated<a class="headerlink" href="#sampling-mandatory-if-combine-corrections-table-is-populated" title="Permalink to this headline">¶</a></h4>
    37913949<p>Specify a combination sampling interval. Orbit and clock corrections will be produced following that interval. A value of 10 sec may be an appropriate choice.</p>
    3792 
    3793 <p><h4>2.14.1.5 <a name="combiGLO">Use GLONASS - optional</h4></p>
    3794 <p>
    3795 You may tick the 'Use GLONASS' option in case you want to produce a GPS plus GLONASS combination and both systems are supported by the Broadcast Correction streams participating in the combination.
    3796 </p>
    3797 
    3798 <p><h4>2.15 <a name="upclk">Upload Corrections</h4></p>
    3799 <p>
    3800 BNC can upload streams carrying orbit and clock corrections to Broadcast Ephemeris in radial, along-track and out-of-plane components if they are<ol type=a>
    3801 <li>
    3802 either generated by BNC as a combination of several individual Broadcast Correction streams coming from an number of real-time Analysis Centers (ACs), see section 'Combine Corrections',</li>
    3803 <li>
    3804 or generated by BNC while the program receives an ASCII stream of precise satellite orbits and clocks via IP port from a connected real-time GNSS engine. Such a stream would be expected in a plain ASCII format and the associated 'decoder' string would have to be 'RTNET', see format description below. </li>
     3950</div>
     3951<div class="section" id="use-glonass-optional">
     3952<h4>Use GLONASS - optional<a class="headerlink" href="#use-glonass-optional" title="Permalink to this headline">¶</a></h4>
     3953<p>You may tick the &#8216;Use GLONASS&#8217; option in case you want to produce a GPS plus GLONASS combination and both systems are supported by the Broadcast Correction streams participating in the combination.</p>
     3954</div>
     3955</div>
     3956<div class="section" id="upload-corrections">
     3957<span id="index-38"></span><h3>Upload Corrections<a class="headerlink" href="#upload-corrections" title="Permalink to this headline">¶</a></h3>
     3958<p>BNC can upload streams carrying orbit and clock corrections to Broadcast Ephemeris in radial, along-track and out-of-plane components if they are:</p>
     3959<ol class="arabic simple">
     3960<li>either generated by BNC as a combination of several individual Broadcast Correction streams coming from an number of real-time Analysis Centers (ACs), see section &#8216;Combine Corrections&#8217;,</li>
     3961<li>or generated by BNC while the program receives an ASCII stream of precise satellite orbits and clocks via IP port from a connected real-time GNSS engine. Such a stream would be expected in a plain ASCII format and the associated &#8216;decoder&#8217; string would have to be &#8216;RTNET&#8217;, see format description below.</li>
    38053962</ol>
    3806 The procedure taken by BNC to generate the orbit and clock corrections to Broadcast Ephemeris and upload them to an Ntrip Broadcaster is as follow:
    3807 <ul>
     3963<p>The procedure taken by BNC to generate the orbit and clock corrections to Broadcast Ephemeris and upload them to an Ntrip Broadcaster is as follow:</p>
     3964<ul class="simple">
    38083965<li>Continuously receive up-to-date Broadcast Ephemeris carrying approximate orbits and clocks for all satellites. Read new Broadcast Ephemeris immediately whenever they become available. This information may come via a stream of RTCM messages generated from another BNC instance.</li>
    38093966</ul>
    3810 Then, epoch by epoch:
    3811 <ul>
    3812 <li>Continuously receive the best available orbit and clock estimates for all satellites in XYZ Earth-Centered-Earth-Fixed IGS08 reference system. Receive them every epoch in plain ASCII format as provided by a real-time GNSS engine such as RTNET or generate them following a combination approach. </li>
    3813 <li>Calculate XYZ coordinates from Broadcast Ephemeris orbits. </li>
    3814 <li>Calculate differences dX,dY,dZ between Broadcast Ephemeris and IGS08 orbits. </li>
    3815 <li>Transform these differences into radial, along-track and out-of-plane corrections to Broadcast Ephemeris orbits. </li>
    3816 <li>Calculate corrections to Broadcast Ephemeris clocks as differences between Broadcast Ephemeris clocks and IGS08 clocks. </li>
    3817 <li>Encode Broadcast Ephemeris orbit and clock corrections in RTCM Version 3 format. </li>
    3818 <li>Upload Broadcast Correction stream to Ntrip Broadcaster. </li>
    3819 </ul>
    3820 <p>
    3821 The orbit and clock corrections to Broadcast Ephemeris are usually referred to the latest set of broadcast messages, which are generally also received in real-time by a GNSS rover. However, the use of the latest broadcast message is delayed for a period of 60 seconds, measured from the time of complete reception of ephemeris and clock parameters, in order to accommodate rover applications to obtain the same set of broadcast orbital and clock parameters. This procedure is recommended in the RTCM SSR standard.
    3822 </p>
    3823 </p>
    3824 Because the stream delivery process may put a significant load on the communication link between BNC and the real-time GNSS engine, it is recommended to run both programs on the same host. However, doing so is not compulsory.
    3825 </p>
    3826 <p>
    3827 The usual handling of BNC when uploading a stream with Broadcast Corrections is that you first specify Broadcast Ephemeris and Broadcast Correction streams. You then specify an Ntrip Broadcaster for stream upload before you start the program.
    3828 </p>
    3829 <p>
    3830 <u>'RTNET' Stream Format</u><br>
    3831 When uploading an SSR stream generated according to (b) then BNC requires precise GNSS orbits and clocks in the IGS Earth-Centered-Earth-Fixed (ECEF) reference system and in a specific ASCII format named 'RTNET' because the data may come from a real-time engine such as RTNET. The sampling interval for data transmission should not exceed 15 sec. Note that otherwise tools involved in IP streaming such as Ntrip Broadcasters or Ntrip Clients may respond with a timeout.
    3832 </p>
    3833 <p>
    3834 Below you find an example for the 'RTNET' ASCII format coming from a real-time GNSS engine. Each epoch begins with an asterisk character followed by the time as year, month, day of month, hour, minute and second. Subsequent records can provide
    3835 </p>
    3836 <p>
    3837 <ul>
    3838 <li>Satellite specific parameters </li>
    3839 </ul>
    3840 </p>
    3841 <p>
    3842 A set of parameters can be defined for each satellite as follows:
    3843 <pre>
    3844 &lt;SatelliteID&gt; &lt;key&gt; &lt;numValues&gt; &lt;value1 value2 ...&gt;
    3845               &lt;key&gt; &lt;numValues&gt; &lt;value1 value2 ...&gt; ... &nbsp;
    3846 </pre>
    3847 The following satellite specific keys and values are currently specified for that in BNC:<br><br>
    3848 <table>
    3849 <tr><td><i>Key&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</i></td><td><i>Values</i></td></tr>
    3850 <tr><td>APC</td><td>Satellite Antenna Phase Center coordinates in meters</td></tr>
    3851 <tr><td>Clk</td><td>Satellite clock correction in meters, relativistic correction applied like in broadcast clocks</td></tr>
    3852 <tr><td>Vel</td><td>Satellite velocity in meters per second</td></tr>
    3853 <tr><td>CoM</td><td>Satellite Center of Mass coordinates in meters</td></tr>
    3854 <tr><td>CodeBias</td><td>Satellite Code Biases in meters with two characters for frequency and tracking mode per bias as defined in RINEX 3 and preceded by total number of biases</td></tr>
    3855 <tr><td>YawAngle</td><td>Satellite Yaw Angle in radian, restricted to be in [0, 2&#960] which shall be used for the computation of phase wind-up correction</td></tr>
    3856 <tr><td>YawRate</td><td>Satellite Yaw Rate in radian per second which is the rate of Yaw Angle</td></tr>
    3857 <tr><td>PhaseBias</td><td>Satellite Phase Biases in meters with two characters for frequency and tracking mode per bias as defined in RINEX 3, preceded by total number of biases and followed by Signal Integer Indicator, Signals Wilde-Lane Integer Indicator as well as Signal Discontinuity Counter</td></tr>
     3967<p>Then, epoch by epoch:</p>
     3968<ul class="simple">
     3969<li>Continuously receive the best available orbit and clock estimates for all satellites in XYZ Earth-Centered-Earth-Fixed IGS08 reference system. Receive them every epoch in plain ASCII format as provided by a real-time GNSS engine such as RTNET or generate them following a combination approach.</li>
     3970<li>Calculate XYZ coordinates from Broadcast Ephemeris orbits.</li>
     3971<li>Calculate differences dX,dY,dZ between Broadcast Ephemeris and IGS08 orbits.</li>
     3972<li>Transform these differences into radial, along-track and out-of-plane corrections to Broadcast Ephemeris orbits.</li>
     3973<li>Calculate corrections to Broadcast Ephemeris clocks as differences between Broadcast Ephemeris clocks and IGS08 clocks.</li>
     3974<li>Encode Broadcast Ephemeris orbit and clock corrections in RTCM Version 3 format.</li>
     3975<li>Upload Broadcast Correction stream to Ntrip Broadcaster.</li>
     3976</ul>
     3977<p>The orbit and clock corrections to Broadcast Ephemeris are usually referred to the latest set of broadcast messages, which are generally also received in real-time by a GNSS rover. However, the use of the latest broadcast message is delayed for a period of 60 seconds, measured from the time of complete reception of ephemeris and clock parameters, in order to accommodate rover applications to obtain the same set of broadcast orbital and clock parameters. This procedure is recommended in the RTCM SSR standard. Because the stream delivery process may put a significant load on the communication link between BNC and the real-time GNSS engine, it is recommended to run both programs on the same host. However, doing so is not compulsory.</p>
     3978<p>The usual handling of BNC when uploading a stream with Broadcast Corrections is that you first specify Broadcast Ephemeris and Broadcast Correction streams. You then specify an Ntrip Broadcaster for stream upload before you start the program.</p>
     3979<p id="index-39"><strong>&#8216;RTNET&#8217; Stream Format</strong></p>
     3980<p>When uploading an SSR stream generated according to 2. then BNC requires precise GNSS orbits and clocks in the IGS Earth-Centered-Earth-Fixed (ECEF) reference system and in a specific ASCII format named &#8216;RTNET&#8217; because the data may come from a real-time engine such as RTNET. The sampling interval for data transmission should not exceed 15 sec. Note that otherwise tools involved in IP streaming such as Ntrip Broadcasters or Ntrip Clients may respond with a timeout.</p>
     3981<p>Below you find an example for the &#8216;RTNET&#8217; ASCII format coming from a real-time GNSS engine. Each epoch begins with an asterisk character followed by the time as year, month, day of month, hour, minute and second. Subsequent records can provide</p>
     3982<div class="highlight-none"><div class="highlight"><pre>* 2015 6 11 15 10 40.000000
     3983</pre></div>
     3984</div>
     3985<p>Subsequent records can provide</p>
     3986<ul class="simple">
     3987<li>Satellite specific parameters</li>
     3988</ul>
     3989<p>A set of parameters can be defined for each satellite as follows:</p>
     3990<div class="highlight-console"><div class="highlight"><pre><span class="go">&lt;SatelliteID&gt; &lt;key&gt; &lt;numValues&gt; &lt;value1 value2 ...&gt;</span>
     3991<span class="go">              &lt;key&gt; &lt;numValues&gt; &lt;value1 value2 ...&gt; ...</span>
     3992</pre></div>
     3993</div>
     3994<p>The satellite specific keys and values currently specified for that in BNC are listed in <a class="reference internal" href="#tab-sat-spec-parameter-keys"><span class="std std-numref">Table 10</span></a>.</p>
     3995<table border="1" class="docutils" id="id55">
     3996<span id="tab-sat-spec-parameter-keys"></span><caption><span class="caption-number">Table 10 </span><span class="caption-text">Keys for satellite specific parameters used in BNC.</span><a class="headerlink" href="#id55" title="Permalink to this table">¶</a></caption>
     3997<colgroup>
     3998<col width="4%" />
     3999<col width="96%" />
     4000</colgroup>
     4001<thead valign="bottom">
     4002<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     4003<th class="head"><strong>Values</strong></th>
     4004</tr>
     4005</thead>
     4006<tbody valign="top">
     4007<tr class="row-even"><td>APC</td>
     4008<td>Satellite Antenna Phase Center coordinates in meters</td>
     4009</tr>
     4010<tr class="row-odd"><td>Clk</td>
     4011<td>Satellite clock correction in meters, relativistic correction applied like in broadcast clocks</td>
     4012</tr>
     4013<tr class="row-even"><td>Vel</td>
     4014<td>Satellite velocity in meters per second</td>
     4015</tr>
     4016<tr class="row-odd"><td>CoM</td>
     4017<td>Satellite Center of Mass coordinates in meters</td>
     4018</tr>
     4019<tr class="row-even"><td>CodeBias</td>
     4020<td>Satellite Code Biases in meters with two characters for frequency and tracking mode per bias as defined in RINEX 3 and preceded by total number of biases</td>
     4021</tr>
     4022<tr class="row-odd"><td>YawAngle</td>
     4023<td>Satellite Yaw Angle in radian, restricted to be in [0, 2π] which shall be used for the computation of phase wind-up correction</td>
     4024</tr>
     4025<tr class="row-even"><td>YawRate</td>
     4026<td>Satellite Yaw Rate in radian per second which is the rate of Yaw Angle</td>
     4027</tr>
     4028<tr class="row-odd"><td>PhaseBias</td>
     4029<td>Satellite Phase Biases in meters with two characters for frequency and tracking mode per bias as defined in RINEX 3, preceded by total number of biases and followed by Signal Integer Indicator, Signals Wilde-Lane Integer Indicator as well as Signal Discontinuity Counter</td>
     4030</tr>
     4031</tbody>
    38584032</table>
    3859 <p>
    3860 <ul>
    3861 <li> Non-satellite specific parameters
    3862 </ul>
    3863 </p>
    3864 <p>
    3865 The following syntax will be used:
    3866 </p>
    3867 <pre>
    3868 &lt;key&gt; &lt;value1 value2 ...&gt;
    3869 &nbsp;
    3870 </pre>
    3871 <p>
    3872 </ul>
    3873 The following non-satellite specific keys and values are currently specified in BNC:<br><br>
    3874 <table>
    3875 <tr><td><i>Key&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</i></td><td><i>Values</i></td></tr>
    3876 <tr><td>IND</td><td>Stands for phase bias information and is followed by Dispersive Bias Consistency Indicator and MW Consistency Indicator</td></tr>
    3877 <tr><td>VTEC</td><td>Stands for Vertical TEC information and is followed by Update Interval and Number of Ionospheric Layers</td></tr>
     4033<ul class="simple">
     4034<li>Non-satellite specific parameters</li>
     4035</ul>
     4036<p>The following syntax will be used:</p>
     4037<div class="highlight-console"><div class="highlight"><pre><span class="go">&lt;key&gt; &lt;value1 value2 ...&gt;</span>
     4038</pre></div>
     4039</div>
     4040<p>The non-satellite specific keys and values currently specified in BNC are listed in <a class="reference internal" href="#tab-non-sat-spec-parameter-keys"><span class="std std-numref">Table 11</span></a>.</p>
     4041<table border="1" class="docutils" id="id56">
     4042<span id="tab-non-sat-spec-parameter-keys"></span><caption><span class="caption-number">Table 11 </span><span class="caption-text">Keys for non-satellite specific parameters used in BNC.</span><a class="headerlink" href="#id56" title="Permalink to this table">¶</a></caption>
     4043<colgroup>
     4044<col width="11%" />
     4045<col width="89%" />
     4046</colgroup>
     4047<thead valign="bottom">
     4048<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     4049<th class="head"><strong>Values</strong></th>
     4050</tr>
     4051</thead>
     4052<tbody valign="top">
     4053<tr class="row-even"><td>IND</td>
     4054<td>Phase bias information followed by Dispersive Bias Consistency Indicator and MW Consistency Indicator</td>
     4055</tr>
     4056<tr class="row-odd"><td>VTEC</td>
     4057<td>Vertical TEC information followed by Update Interval and Number of Ionospheric Layers</td>
     4058</tr>
     4059</tbody>
    38784060</table>
    3879 <br>
    3880 If key VTEC is specified, a data set for each layer contains within its first line the Layers Number, followed by Maximum Degree, Maximum Order and Layer Height. After that, Cosine and Sinus Spherical Harmonic Coefficients will follow, one block each.
    3881 </p>
    3882 <p>
    3883 Because each keyword is associated to a certain number of values, an 'old' BNC could be operated with an incoming 'new' RTNET stream containing so far unknown keys - they would just be skipped in BNC.
    3884 </p>
    3885 <p>
    3886 Example for 'RTNET' stream content and format:
    3887 </p>
    3888 <p>
    3889 <pre>
    3890 * 2015 6 11 15 10 40.000000
    3891 VTEC 0 1 0 6 6 450000.0 20.4660 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 5.3590 9.6580 0.0000 0.0000 0.0000 0.0000 0.0000 -6.3610 -0.1210 1.1050 0.0000 0.0000 0.0000 0.0000 -2.7140 -1.8200 -0.9920 -0.6430 0.0000 0.0000 0.0000 1.9140 -0.5180 0.2530 0.0870 -0.0110 0.0000 0.0000 2.2950 1.0510 -0.9540 0.6220 -0.0720 -0.0810 0.0000 -0.9760 0.7570 0.2320 -0.2520 0.1970 -0.0680 -0.0280 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.2720 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.1100 -1.0170 0.0000 0.0000 0.0000 0.0000 0.0000 -1.1500 0.5440 0.9890 0.0000 0.0000 0.0000 0.0000 -0.3770 -0.1990 0.2670 -0.0470 0.0000 0.0000 0.0000 0.6550 -0.0130 -0.2310 -0.4810 -0.3510 0.0000 0.0000 0.2360 -0.0710 0.0280 0.1900 -0.0810 0.0710
    3892 IND 0 1
    3893 G01 APC 3   -14442611.532   -13311059.070   -18020998.395 Clk 1   -1426.920500 Vel 3  2274.647600   -28.980300 -1787.861900 CoM 3   -14442612.572   -13311059.518   -18020999.539 CodeBias 6 1W -3.760000 1C -3.320000 2W -6.200000 2X -5.780000 1H -3.350000 5I -5.430000 YawAngle 1 -0.315600 YawRate 1 0.0 PhaseBias 3 1C  3.9473 1 2 4 2W  6.3143 1 2 4 5I 6.7895 1 2 4
    3894 G02 APC 3    -8859103.160    14801278.856    20456920.800 Clk 1  171219.083500 Vel 3 -2532.296700  -161.275800 -1042.884100 CoM 3    -8859103.418    14801279.287    20456921.395 CodeBias 6 1W  3.930000 1C  3.610000 2W  6.480000 2X  0.000000 1H  3.580000 5I  0.000000 YawAngle 1 -0.693500 YawRate 1 0.0 PhaseBias 2 1C -4.0902 1 2 4 2W -6.7045 1 2 4
    3895 G03 APC 3   -13788295.679   -22525098.353     2644811.508 Clk 1  104212.074300 Vel 3   102.263400  -429.953400 -3150.231900 CoM 3   -13788296.829   -22525099.534     2644811.518 CodeBias 6 1W -2.650000 1C -2.160000 2W -4.360000 2X -4.480000 1H -2.070000 5I -5.340000 YawAngle 1 -0.428800 YawRate 1 0.0 PhaseBias 3 1C  2.9024 1 2 2 2W  4.6124 1 2 2 5I 5.3694 1 2 2
    3896 ..
    3897 R01 APC 3    -6783489.153   -23668850.753     6699094.457 Clk 1 - 45875.658100 Vel 3  -267.103000  -885.983700 -3403.253200 CoM 3    -6783489.307   -23668853.173     6699095.274 CodeBias 4 1P -2.496400 1C -2.490700 2P -4.126600 2C -3.156200
    3898 R02 APC 3   -11292959.022   -10047039.425    20577343.288 Clk 1   41215.750900 Vel 3  -476.369400 -2768.936600 -1620.000600 CoM 3   -11292959.672   -10047040.710    20577345.344 CodeBias 4 1P  0.211200 1C  0.391300 2P  0.349100 2C  0.406300
    3899 R03 APC 3    -9226469.614     9363128.850    21908853.313 Clk 1   13090.322800 Vel 3  -369.088600 -2964.934500  1111.041000 CoM 3    -9226470.226     9363129.442    21908855.791 CodeBias 4 1P  2.283800 1C  2.483800 2P  3.775300 2C  3.785500
    3900 ..
    3901 E11 APC 3     2965877.898    17754418.441    23503540.946 Clk 1   33955.329000 Vel 3 -1923.398100  1361.709200  -784.555800 CoM 3     2965878.082    17754418.669    23503541.507 CodeBias 3 1B  1.382100 5Q  2.478400 7Q  2.503300
    3902 E12 APC 3   -14807433.144    21753389.581    13577231.476 Clk 1 -389652.211900 Vel 3 -1082.464300   825.868400 -2503.982200 CoM 3   -14807433.366    21753389.966    13577231.926 CodeBias 3 1B  0.386600 5Q  0.693300 7Q  0.534700
    3903 E19 APC 3   -15922225.351     8097517.292    23611910.403 Clk 1   -2551.650800 Vel 3  -183.377800 -2359.143700   684.105100 CoM 3   -15922225.569     8097517.329    23611910.995 CodeBias 3 1B -1.777000 5Q -3.186600 7Q -3.069100
    3904 ..
    3905 EOE
    3906 </pre>
    3907 </p>
    3908 <p>
    3909 Note that the end of an epoch in the incoming stream is indicated by an ASCII string 'EOE' (for End Of Epoch).
    3910 </p>
    3911 <p>
    3912 When using clocks from Broadcast Ephemeris (with or without applied corrections) or clocks from SP3 files, it may be important to understand that they are not corrected for the conventional periodic relativistic effect. Chapter 10 of the IERS Conventions 2003 mentions that the conventional periodic relativistic correction to the satellite clock (to be added to the broadcast clock) is computed as
    3913 <pre>
    3914  &nbsp; &nbsp; dt =  -2 (R * V) / c<sup>2</sup>
    3915 </pre>
    3916 where R * V is the scalar product of the satellite position and velocity and c is the speed of light. This can also be found in the GPS Interface Specification, IS-GPS-200, Revision D, 7 March 2006.
    3917 </p>
    3918 
    3919 <p><h4>2.15.1 <a name="upadd">Add, Delete Row - optional</h4></p>
    3920 <p>Hit 'Add Row' button to add a row to the stream 'Upload Table' or hit the 'Delete' button to delete the highlighted row(s).
    3921 </p>
    3922 <p>
    3923 Having an empty 'Upload Table' is default and means that you do not want BNC to upload orbit and clock correction streams to any Ntrip Broadcaster.
    3924 </p>
    3925 
    3926 <p><h4>2.15.2 <a name="uphost">Host, Port, Mountpoint, Password - optional</h4></p>
    3927 
    3928 <p>Specify the domain name or IP number of an Ntrip Broadcaster for uploading the stream. Furthermore, specify the caster's listening IP port, an upload mountpoint and an upload password. Note that Ntrip Broadcasters are often configured to provide access through more than one port, usually ports 80 and 2101. If you experience communication problems on port 80, you should try to use the alternative port(s).
    3929 </p>
    3930 <p>
    3931 BNC uploads a stream to the Ntrip Broadcaster by referring to a dedicated mountpoint that has been set by its operator. Specify the mountpoint based on the details you received for your stream from the operator. It is often a 4-character ID (capital letters) plus an integer number.</p>
    3932 <p>The stream upload may be protected through an upload 'Password'. Enter the password you received from the Ntrip Broadcaster operator along with the mountpoint(s).</p>
    3933 <p>
    3934 If 'Host', 'Port', 'Mountpoint' and 'Password' are set, the stream will be encoded in RTCM's 'State Space Representation' (SSR) messages and uploaded to the specified broadcaster following the Ntrip Version 1 transport protocol.
    3935 </p>
    3936 
    3937 <p><h4>2.15.3 <a name="upsystem">System - mandatory if 'Host' is set</h4></p>
    3938 <p>
    3939 BNC allows configuring several Broadcast Correction streams for upload so that they refer to different reference systems and different Ntrip Broadcasters. You may use this functionality for parallel support of a backup Ntrip Broadcaster or for simultaneous support of various regional reference systems. Available options for transforming orbit and clock corrections to specific target reference systems are
    3940 <p>
    3941 <ul>
     4061<p>If key VTEC is specified, a data set for each layer contains within its first line the Layers Number, followed by Maximum Degree, Maximum Order and Layer Height. After that, Cosine and Sinus Spherical Harmonic Coefficients will follow, one block each.</p>
     4062<p>Because each keyword is associated to a certain number of values, an &#8216;old&#8217; BNC could be operated with an incoming &#8216;new&#8217; RTNET stream containing so far unknown keys - they would just be skipped in BNC.</p>
     4063<p>Example for &#8216;RTNET&#8217; stream content and format:</p>
     4064<div class="highlight-console"><div class="highlight"><pre><span class="go">* 2015 6 11 15 10 40.000000</span>
     4065<span class="go">VTEC 0 1 0 6 6 450000.0 20.4660 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 5.3590 9.6580 0.0000 0.0000 0.0000 0.0000 0.0000 -6.3610 -0.1210 1.1050 0.0000 0.0000 0.0000 0.0000 -2.7140 -1.8200 -0.9920 -0.6430 0.0000 0.0000 0.0000 1.9140 -0.5180 0.2530 0.0870 -0.0110 0.0000 0.0000 2.2950 1.0510 -0.9540 0.6220 -0.0720 -0.0810 0.0000 -0.9760 0.7570 0.2320 -0.2520 0.1970 -0.0680 -0.0280 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.2720 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1.1100 -1.0170 0.0000 0.0000 0.0000 0.0000 0.0000 -1.1500 0.5440 0.9890 0.0000 0.0000 0.0000 0.0000 -0.3770 -0.1990 0.2670 -0.0470 0.0000 0.0000 0.0000 0.6550 -0.0130 -0.2310 -0.4810 -0.3510 0.0000 0.0000 0.2360 -0.0710 0.0280 0.1900 -0.0810 0.0710</span>
     4066<span class="go">IND 0 1</span>
     4067<span class="go">G01 APC 3   -14442611.532   -13311059.070   -18020998.395 Clk 1   -1426.920500 Vel 3  2274.647600   -28.980300 -1787.861900 CoM 3   -14442612.572   -13311059.518   -18020999.539 CodeBias 6 1W -3.760000 1C -3.320000 2W -6.200000 2X -5.780000 1H -3.350000 5I -5.430000 YawAngle 1 -0.315600 YawRate 1 0.0 PhaseBias 3 1C  3.9473 1 2 4 2W  6.3143 1 2 4 5I 6.7895 1 2 4</span>
     4068<span class="go">G02 APC 3    -8859103.160    14801278.856    20456920.800 Clk 1  171219.083500 Vel 3 -2532.296700  -161.275800 -1042.884100 CoM 3    -8859103.418    14801279.287    20456921.395 CodeBias 6 1W  3.930000 1C  3.610000 2W  6.480000 2X  0.000000 1H  3.580000 5I  0.000000 YawAngle 1 -0.693500 YawRate 1 0.0 PhaseBias 2 1C -4.0902 1 2 4 2W -6.7045 1 2 4</span>
     4069<span class="go">G03 APC 3   -13788295.679   -22525098.353     2644811.508 Clk 1  104212.074300 Vel 3   102.263400  -429.953400 -3150.231900 CoM 3   -13788296.829   -22525099.534     2644811.518 CodeBias 6 1W -2.650000 1C -2.160000 2W -4.360000 2X -4.480000 1H -2.070000 5I -5.340000 YawAngle 1 -0.428800 YawRate 1 0.0 PhaseBias 3 1C  2.9024 1 2 2 2W  4.6124 1 2 2 5I 5.3694 1 2 2</span>
     4070<span class="go">...</span>
     4071<span class="go">R01 APC 3    -6783489.153   -23668850.753     6699094.457 Clk 1 - 45875.658100 Vel 3  -267.103000  -885.983700 -3403.253200 CoM 3    -6783489.307   -23668853.173     6699095.274 CodeBias 4 1P -2.496400 1C -2.490700 2P -4.126600 2C -3.156200</span>
     4072<span class="go">R02 APC 3   -11292959.022   -10047039.425    20577343.288 Clk 1   41215.750900 Vel 3  -476.369400 -2768.936600 -1620.000600 CoM 3   -11292959.672   -10047040.710    20577345.344 CodeBias 4 1P  0.211200 1C  0.391300 2P  0.349100 2C  0.406300</span>
     4073<span class="go">R03 APC 3    -9226469.614     9363128.850    21908853.313 Clk 1   13090.322800 Vel 3  -369.088600 -2964.934500  1111.041000 CoM 3    -9226470.226     9363129.442    21908855.791 CodeBias 4 1P  2.283800 1C  2.483800 2P  3.775300 2C  3.785500</span>
     4074<span class="go">...</span>
     4075<span class="go">E11 APC 3     2965877.898    17754418.441    23503540.946 Clk 1   33955.329000 Vel 3 -1923.398100  1361.709200  -784.555800 CoM 3     2965878.082    17754418.669    23503541.507 CodeBias 3 1B  1.382100 5Q  2.478400 7Q  2.503300</span>
     4076<span class="go">E12 APC 3   -14807433.144    21753389.581    13577231.476 Clk 1 -389652.211900 Vel 3 -1082.464300   825.868400 -2503.982200 CoM 3   -14807433.366    21753389.966    13577231.926 CodeBias 3 1B  0.386600 5Q  0.693300 7Q  0.534700</span>
     4077<span class="go">E19 APC 3   -15922225.351     8097517.292    23611910.403 Clk 1   -2551.650800 Vel 3  -183.377800 -2359.143700   684.105100 CoM 3   -15922225.569     8097517.329    23611910.995 CodeBias 3 1B -1.777000 5Q -3.186600 7Q -3.069100</span>
     4078<span class="go">...</span>
     4079<span class="go">EOE</span>
     4080</pre></div>
     4081</div>
     4082<p>Note that the end of an epoch in the incoming stream is indicated by an ASCII string &#8216;EOE&#8217; (for End Of Epoch).</p>
     4083<p>When using clocks from Broadcast Ephemeris (with or without applied corrections) or clocks from SP3 files, it may be important to understand that they are not corrected for the conventional periodic relativistic effect. Chapter 10 of the IERS Conventions 2003 mentions that the conventional periodic relativistic correction to the satellite clock (to be added to the broadcast clock) is computed as</p>
     4084<div class="math">
     4085\[dt =  -2 (R * V) / c^2\]</div>
     4086<p>where <span class="math">\(R * V\)</span> is the scalar product of the satellite position and velocity and <span class="math">\(c\)</span> is the speed of light. This can also be found in the GPS Interface Specification, IS-GPS-200, Revision D, 7 March 2006.</p>
     4087<div class="section" id="add-delete-row-optional">
     4088<h4>Add, Delete Row - optional<a class="headerlink" href="#add-delete-row-optional" title="Permalink to this headline">¶</a></h4>
     4089<p>Hit &#8216;Add Row&#8217; button to add a row to the stream &#8216;Upload Table&#8217; or hit the &#8216;Delete&#8217; button to delete the highlighted row(s). Having an empty &#8216;Upload Table&#8217; is default and means that you do not want BNC to upload orbit and clock correction streams to any Ntrip Broadcaster.</p>
     4090</div>
     4091<div class="section" id="host-port-mountpoint-password-optional">
     4092<h4>Host, Port, Mountpoint, Password - optional<a class="headerlink" href="#host-port-mountpoint-password-optional" title="Permalink to this headline">¶</a></h4>
     4093<p>Specify the domain name or IP number of an Ntrip Broadcaster for uploading the stream. Furthermore, specify the caster&#8217;s listening IP port, an upload mountpoint and an upload password. Note that Ntrip Broadcasters are often configured to provide access through more than one port, usually ports 80 and 2101. If you experience communication problems on port 80, you should try to use the alternative port(s).</p>
     4094<p>BNC uploads a stream to the Ntrip Broadcaster by referring to a dedicated mountpoint that has been set by its operator. Specify the mountpoint based on the details you received for your stream from the operator. It is often a 4-character ID (capital letters) plus an integer number.</p>
     4095<p>The stream upload may be protected through an upload &#8216;Password&#8217;. Enter the password you received from the Ntrip Broadcaster operator along with the mountpoint(s).</p>
     4096<p>If &#8216;Host&#8217;, &#8216;Port&#8217;, &#8216;Mountpoint&#8217; and &#8216;Password&#8217; are set, the stream will be encoded in RTCM&#8217;s &#8216;State Space Representation&#8217; (SSR) messages and uploaded to the specified broadcaster following the Ntrip Version 1 transport protocol.</p>
     4097</div>
     4098<div class="section" id="system-mandatory-if-host-is-set">
     4099<span id="index-40"></span><h4>System - mandatory if &#8216;Host&#8217; is set<a class="headerlink" href="#system-mandatory-if-host-is-set" title="Permalink to this headline">¶</a></h4>
     4100<p>BNC allows configuring several Broadcast Correction streams for upload so that they refer to different reference systems and different Ntrip Broadcasters. You may use this functionality for parallel support of a backup Ntrip Broadcaster or for simultaneous support of various regional reference systems. Available options for transforming orbit and clock corrections to specific target reference systems are:</p>
     4101<ul class="simple">
    39424102<li>IGS08 which stands for the GNSS-based IGS realization of the International Terrestrial Reference Frame 2008 (ITRF2008), and</li>
    39434103<li>ETRF2000 which stands for the European Terrestrial Reference Frame 2000 adopted by EUREF, and</li>
    … …  
    39474107<li>SIRGAS95 which stands for the Geodetic Datum adopted e.g. for Venezuela, and</li>
    39484108<li>DREF91 which stands for the Geodetic Datum adopted for Germany, and</li>
    3949 <li>'Custom' which allows a transformation of Broadcast Corrections from the IGS08 system to any other system through specifying up to 14 Helmert Transformation Parameters.</li>
    3950 </ul>
    3951 </p>
    3952 
    3953 <p>
    3954 Because a mathematically strict transformation to a regional reference system is not possible on the BNC server side when a scale factor is involved, the program follows an approximate solution. While <u>orbits</u> are transformed in full accordance with given equations, a transformed <u>clock</u> is derived through applying correction term
    3955 </p>
    3956 <pre>
    3957    dC = (s - 1) / s * &rho; / c
    3958 </pre>
    3959 <p>
    3960 where s is the transformation scale, c is the speed of light, and &rho; are the topocentric distance between an (approximate) center of the transformation's validity area and the satellite.
    3961 </p>
    3962 <p>
    3963 From a theoretical point of view, this kind of approximation leads to inconsistencies between orbits and clocks and is therefore not allowed (Huisman et al. 2012). However, it has been proved that resulting errors in Precise Point Positioning are on millimeter level for horizontal components and below one centimeter for height components. The Australian GDA94 transformation with its comparatively large scale parameter is an exception in this as discrepancies may reach up there to two centimeters.
    3964 </p>
    3965 
    3966 <p>
    3967 <u>IGS08:</u> As the orbits and clocks coming from real-time GNSS engine are expected to be in the IGS08 system, no transformation is carried out if this option is selected.
    3968 </p>
    3969 
    3970 <p>
    3971 <u>ETRF2000:</u> The formulas for the transformation 'ITRF2008-&gt;ETRF2000' are taken from 'Claude Boucher and Zuheir Altamimi 2008: Specifications for reference frame fixing in the analysis of EUREF GPS campaign', see <u>http://etrs89.ensg.ign.fr/memo-V8.pdf</u>. The following 14 Helmert Transformation Parameters were introduced:
    3972 </p>
    3973 <p>
    3974 <pre>
    3975 Translation in X at epoch To:  0.0521 m
    3976 Translation in Y at epoch To:  0.0493 m
    3977 Translation in Z at epoch To: -0.0585 m
    3978 Translation rate in X:  0.0001 m/y
    3979 Translation rate in Y:  0.0001 m/y
    3980 Translation rate in Z: -0.0018 m/y
    3981 Rotation in X at epoch To:  0.891 mas
    3982 Rotation in Y at epoch To:  5.390 mas
    3983 Rotation in Z at epoch To: -8.712 mas
    3984 Rotation rate in X:  0.081 mas/y
    3985 Rotation rate in Y:  0.490 mas/y
    3986 Rotation rate in Z: -0.792 mas/y
    3987 Scale at epoch To : 0.00000000134
    3988 Scale rate: 0.00000000008 /y
    3989 To: 2000.0
    3990 </pre>
    3991 </p>
    3992 
    3993 <p>
    3994 <u>NAD83:</u> Formulas for the transformation 'ITRF2008-&gt;NAD83' are taken from 'Chris Pearson, Richard Snay 2013: Introducing HTDP 3.1 to transform coordinates across time and spatial reference frames', GPS Solutions, January 2013, Volume 17, Issue 1, pp 1-15.
    3995 </p>
    3996 <p>
    3997 <pre>
    3998 Translation in X at epoch To:  0.99343 m
    3999 Translation in Y at epoch To: -1.90331 m
    4000 Translation in Z at epoch To: -0.52655 m
    4001 Translation rate in X:  0.00079 m/y
    4002 Translation rate in Y: -0.00060 m/y
    4003 Translation rate in Z: -0.00134 m/y
    4004 Rotation in X at epoch To: -25.91467 mas
    4005 Rotation in Y at epoch To:  -9.42645 mas
    4006 Rotation in Z at epoch To: -11.59935 mas
    4007 Rotation rate in X: -0.06667 mas/y
    4008 Rotation rate in Y:  0.75744 mas/y
    4009 Rotation rate in Z:  0.05133 mas/y
    4010 Scale at epoch To : 0.00000000171504
    4011 Scale rate: -0.00000000010201 /y
    4012 To: 1997.0
    4013 </pre>
    4014 </p>
    4015 
    4016 <p>
    4017 <u>GDA94:</u> The formulas for the transformation 'ITRF2008-&gt;GDA94' are taken from 'John Dawson, Alex Woods 2010: ITRF to GDA94 coordinate transformations', Journal of Applied Geodesy, 4 (2010), 189-199, de Gruyter 2010. DOI 10.1515/JAG.2010.019'.
    4018 </p>
    4019 <p>
    4020 <pre>
    4021 Translation in X at epoch To: -0.08468 m
    4022 Translation in Y at epoch To: -0.01942 m
    4023 Translation in Z at epoch To:  0.03201 m
    4024 Translation rate in X:  0.00142 m/y
    4025 Translation rate in Y:  0.00134 m/y
    4026 Translation rate in Z:  0.00090 m/y
    4027 Rotation in X at epoch To:  0.4254 mas
    4028 Rotation in Y at epoch To: -2.2578 mas
    4029 Rotation in Z at epoch To: -2.4015 mas
    4030 Rotation rate in X: -1.5461 mas/y
    4031 Rotation rate in Y: -1.1820 mas/y
    4032 Rotation rate in Z: -1.1551 mas/y
    4033 Scale at epoch To : 0.000000009710
    4034 Scale rate: 0.000000000109 /y
    4035 To: 1994.0
    4036 </pre>
    4037 </p>
    4038 
    4039 <p>
    4040 <u>SIRGAS2000:</u> The formulas for the transformation 'ITRF2008-&gt;SIRGAS2000' were provided via personal communication from CGED-Coordenacao de Geodesia, IBGE/DGC - Diretoria de Geociencias, Brazil.</u>.
    4041 </p>
    4042 <p>
    4043 <pre>
    4044 Translation in X at epoch To:  0.0020 m
    4045 Translation in Y at epoch To:  0.0041 m
    4046 Translation in Z at epoch To:  0.0039 m
    4047 Translation rate in X:  0.0000 m/y
    4048 Translation rate in Y:  0.0000 m/y
    4049 Translation rate in Z:  0.0000 m/y
    4050 Rotation in X at epoch To:  0.170 mas
    4051 Rotation in Y at epoch To: -0.030 mas
    4052 Rotation in Z at epoch To:  0.070 mas
    4053 Rotation rate in X:  0.000 mas/y
    4054 Rotation rate in Y:  0.000 mas/y
    4055 Rotation rate in Z:  0.000 mas/y
    4056 Scale at epoch To : -0.000000001000
    4057 Scale rate: 0.000000000000 /y
    4058 To: 0000.0
    4059 </pre>
    4060 </p>
    4061 
    4062 <p>
    4063 <u>SIRGAS95:</u> The formulas for the transformation 'ITRF2005-&gt;SIRGAS95' were provided via personal communication from Gustavo Acuha, Laboratorio de Geodesia Fisica y Satelital at Zulia University (LGFS-LUZ), parameters based on values from Table 4.1 of "Terrestrial Reference Frames (April 10, 2009), Chapter 4" in http://tai.bipm.org/iers/convupdt/convupdt_c4.html.</u>.
    4064 </p>
    4065 <p>
    4066 <pre>
    4067 Translation in X at epoch To:  0.0077 m
    4068 Translation in Y at epoch To:  0.0058 m
    4069 Translation in Z at epoch To: -0.0138 m
    4070 Translation rate in X:  0.0000 m/y
    4071 Translation rate in Y:  0.0000 m/y
    4072 Translation rate in Z:  0.0000 m/y
    4073 Rotation in X at epoch To:  0.000 mas
    4074 Rotation in Y at epoch To:  0.000 mas
    4075 Rotation in Z at epoch To: -0.003 mas
    4076 Rotation rate in X:  0.000 mas/y
    4077 Rotation rate in Y:  0.000 mas/y
    4078 Rotation rate in Z:  0.000 mas/y
    4079 Scale at epoch To : 0.00000000157
    4080 Scale rate: -0.000000000000 /y
    4081 To: 1995.4
    4082 </pre>
    4083 </p>
    4084 
    4085 <p>
    4086 <u>DREF91:</u> 'Referenzkoordinaten fuer SAPOS, Empfehlungen der Projektgruppe SAPOS-Koordinatenmonitoring 2008', Personal communication with Peter Franke, BKG, Germany. The following 14 Helmert Transformation Parameters were introduced:
    4087 </p>
    4088 <p>
    4089 <pre>
    4090 Translation in X at epoch To: -0.0118 m
    4091 Translation in Y at epoch To:  0.1432 m
    4092 Translation in Z at epoch To: -0.1117 m
    4093 Translation rate in X:  0.0001 m/y
    4094 Translation rate in Y:  0.0001 m/y
    4095 Translation rate in Z: -0.0018 m/y
    4096 Rotation in X at epoch To:   3.291 mas
    4097 Rotation in Y at epoch To:   6.190 mas
    4098 Rotation in Z at epoch To: -11.012 mas
    4099 Rotation rate in X:  0.081 mas/y
    4100 Rotation rate in Y:  0.490 mas/y
    4101 Rotation rate in Z: -0.792 mas/y
    4102 Scale at epoch To : 0.00000001224
    4103 Scale rate: 0.00000000008 /y
    4104 To: 2000.0
    4105 </pre>
    4106 </p>
    4107 
    4108 <p>
    4109 <u>Custom:</u> Feel free to specify your own 14 Helmert Transformation parameters for transformations from IGS08/ITRF2008 into your own target system.
    4110 </p>
    4111 
    4112 <p><img src="IMG/screenshot38.png"/></p>
    4113 <p><u>Figure 30:</u> Setting BNC's Custom Transformation Parameters window, example for 'ITRF2008->GDA94'</p>
    4114 
    4115 <p><h4>2.15.4 <a name="upcom">Center of Mass - optional</h4></p>
    4116 <p>
    4117 BNC allows to either refer Broadcast Corrections to the satellite's Center of Mass (CoM) or to the satellite's Antenna Phase Center (APC). By default, corrections refer to APC. Tick 'Center of Mass' to refer uploaded corrections to CoM.
    4118 </p>
    4119 
    4120 <p><h4>2.15.5 <a name="upsp3">SP3 File - optional</h4></p>
    4121 <p>Specify a path for saving the generated orbit corrections as SP3 orbit files. If the specified directory does not exist, BNC will not create SP3 orbit files. The following is a path example for a Linux system:
    4122 
    4123 <pre>
    4124    /home/user/BNC${GPSWD}.sp3
    4125 </pre>
    4126 
    4127 Note that '${GPSWD}' produces the GPS Week and Day number in the filename.</p>
    4128 <p>
    4129 Default is an empty option field, meaning that you do not want BNC to save the uploaded stream content in daily SP3 files.
    4130 </p>
    4131 <p>
    4132 As a SP3 file content should be referred to the satellites' Center of Mass (CoM) while Broadcast Corrections are referred to the satellites' APC, an offset has to be applied which is available from an IGS ANTEX file (see option 'ANTEX File' below). Hence, you should specify the 'ANTEX File' path there if you want to save the stream content in SP3 format. If you do not specify an 'ANTEX File' path, the SP3 file content will be referred to the satellites APCs.
    4133 </p>
    4134 <p>
    4135 The filenames for the daily SP3 files follow the convention for SP3 filenames. The first three characters of each filename are set to 'BNC'. Note that clocks in the SP3 orbit files are not corrected for the conventional periodic relativistic effect.
    4136 </p>
    4137 <p>
    4138 In case the 'Combine Corrections' table contains only one Broadcast Correction stream, BNC will merge that stream with Broadcast Ephemeris to save results in files specified here through SP3 and/or Clock RINEX file path. In such a case you have to define only the SP3 and Clock RINEX file path and no further option in the 'Upload Corrections' table.
    4139 </p>
    4140 
    4141 <p>
    4142 Note that BNC outputs a complete list of SP3 'Epoch Header Records', even if no 'Position and Clock Records' are available for certain epochs because of stream outages. Note further that the 'Number of Epochs' in the first SP3 header record may not be correct because that number is not available when the file is created. Depending on your processing software (e.g. Bernese GNSS Software, BSW) it could therefore be necessary to correct an incorrect 'Number of Epochs' in the file before you use it in post processing.
    4143 </p>
    4144 
    4145 <p><h4>2.15.6 <a name="uprinex">RNX File - optional</h4></p>
    4146 <p>
    4147 The clock corrections generated by BNC for upload can be logged in Clock RINEX format. The file naming follows the RINEX convention.
    4148 </p>
    4149 <p>
    4150 Specify a path for saving the generated clock corrections as Clock RINEX files. If the specified directory does not exist, BNC will not create Clock RINEX files. The following is a path example for a Linux system:
    4151 <pre>
    4152    /home/user/BNC${GPSWD}.clk
    4153 </pre>
    4154 Note that '${GPSWD}' produces the GPS Week and Day number in the filename.
    4155 </p>
    4156 <p>
    4157 Note further that clocks in the Clock RINEX files are not corrected for the conventional periodic relativistic effect.
    4158 </p>
    4159 
    4160 <p><h4>2.15.7 <a name="pidsidiod">PID, SID, IOD - optional</h4></p>
    4161 <p>
    4162 When applying Broadcast Ephemeris corrections in a PPP algorithm or in a combination of several correction streams, it is important for the client software to receive information on the continuity of discontinuity of the stream contents. Here you can specify three ID's to describe the contents of your Broadcast Ephemeris correction stream when it is uploaded.
    4163 <ul>
    4164 <li>A 'SSR Provider ID' is issued by RTCM SC-104 on request to identify a SSR service (see e.g. <u>http://software.rtcm-ntrip.org/wiki/SSRProvider</u>). This ID is globally unique. Values vary in the range of 0-65535. Values in the range of 0-255 are reserved for experimental services.</li>
    4165 <li>A provider may generate several Broadcast Ephemeris correction streams with different contents. The 'SSR Solution ID' indicates different SSR services of one SSR provider. Values vary in the range of 0-15.</li>
    4166 <li>A change of the 'IOD SSR' is used to indicate a change in the SSR generating configuration which may be relevant for the rover. Values vary in the range of 0-15.</li>
    4167 </ul>
    4168 </p>
    4169 
    4170 <p><h4>2.15.8 <a name="upinter">Interval - mandatory if 'Upload Table' entries specified</h4></p>
    4171 <p>
    4172 Select the length of Clock RINEX files and SP3 Orbit files. The default value is 1 day.
    4173 </p>
    4174 
    4175 <p><h4>2.15.9 <a name="upclksmpl">Sampling</h4></p>
    4176 <p>BNC requires an orbit corrections sampling interval for the stream to be uploaded and sampling intervals for SP3 and Clock RINEX files. The outgoing stream's clock correction sampling interval follows that of incoming corrections and is therefore nothing to be specified here.</p>
    4177 
    4178 <p><h4>2.15.9.1 <a name="upclkorb">Orbits (Orb) - mandatory if 'Upload Table' entries specified</h4></p>
    4179 <p>Select the stream's orbit correction sampling interval in seconds. A value of 60 sec may be appropriate.</p>
    4180 <p> A value of zero '0' tells BNC to upload all orbit correction samples coming in from the real-time GNSS engine along with the clock correction samples to produce combined orbit and clock corrections to Broadcast Ephemeris (1060 for GPS, 1066 for GLONASS).
    4181 </p>
    4182 <p>
    4183 Configuration examples:
    4184 </p>
    4185 Let us suppose a real-time network engine supporting BNC every <u>5 sec</u> with GPS Broadcast Corrections for orbits, clocks and code biases in 'RTNET' stream format.
    4186 <ul>
    4187 <li>With 'Sampling Orb' set to '0'  BNC will produce</li>
    4188 <ul>
     4109<li>&#8216;Custom&#8217; which allows a transformation of Broadcast Corrections from the IGS08 system to any other system through specifying up to 14 Helmert Transformation Parameters.</li>
     4110</ul>
     4111<p>Because a mathematically strict transformation to a regional reference system is not possible on the BNC server side when a scale factor is involved, the program follows an approximate solution. While orbits are transformed in full accordance with given equations, a transformed clock is derived through applying correction term</p>
     4112<div class="math">
     4113\[dC = (s - 1) / s * \rho / c\]</div>
     4114<p>where <span class="math">\(s\)</span> is the transformation scale, <span class="math">\(c\)</span> is the speed of light, and <span class="math">\(ρ\)</span> is the topocentric distance between an (approximate) center of the transformation&#8217;s validity area and the satellite.</p>
     4115<p>From a theoretical point of view, this kind of approximation leads to inconsistencies between orbits and clocks and is therefore not allowed <a class="reference internal" href="bnchelp.html#huisman2012a" id="id13">[11]</a>. However, it has been proved that resulting errors in Precise Point Positioning are on millimeter level for horizontal components and below one centimeter for height components. The Australian GDA94 transformation with its comparatively large scale parameter is an exception in this as discrepancies may reach up there to two centimeters.</p>
     4116<p>IGS08: As the orbits and clocks coming from real-time GNSS engine are expected to be in the IGS08 system, no transformation is carried out if this option is selected.</p>
     4117<p>ETRF2000: The formulas for the transformation &#8216;ITRF2008-&gt;ETRF2000&#8217; are taken from &#8216;Claude Boucher and Zuheir Altamimi 2008: Specifications for reference frame fixing in the analysis of EUREF GPS campaign&#8217;, see <a class="reference external" href="http://etrs89.ensg.ign.fr/memo-V8.pdf">http://etrs89.ensg.ign.fr/memo-V8.pdf</a>. The following 14 Helmert Transformation Parameters were introduced:</p>
     4118<div class="highlight-console"><div class="highlight"><pre><span class="go">Translation in X at epoch To:  0.0521 m</span>
     4119<span class="go">Translation in Y at epoch To:  0.0493 m</span>
     4120<span class="go">Translation in Z at epoch To: -0.0585 m</span>
     4121<span class="go">Translation rate in X:  0.0001 m/y</span>
     4122<span class="go">Translation rate in Y:  0.0001 m/y</span>
     4123<span class="go">Translation rate in Z: -0.0018 m/y</span>
     4124<span class="go">Rotation in X at epoch To:  0.891 mas</span>
     4125<span class="go">Rotation in Y at epoch To:  5.390 mas</span>
     4126<span class="go">Rotation in Z at epoch To: -8.712 mas</span>
     4127<span class="go">Rotation rate in X:  0.081 mas/y</span>
     4128<span class="go">Rotation rate in Y:  0.490 mas/y</span>
     4129<span class="go">Rotation rate in Z: -0.792 mas/y</span>
     4130<span class="go">Scale at epoch To : 0.00000000134</span>
     4131<span class="go">Scale rate: 0.00000000008 /y</span>
     4132<span class="go">To: 2000.0</span>
     4133</pre></div>
     4134</div>
     4135<p>NAD83: Formulas for the transformation &#8216;ITRF2008-&gt;NAD83&#8217; are taken from <a class="reference internal" href="bnchelp.html#pearson2013a" id="id14">[12]</a>:</p>
     4136<div class="highlight-console"><div class="highlight"><pre><span class="go">Translation in X at epoch To:  0.99343 m</span>
     4137<span class="go">Translation in Y at epoch To: -1.90331 m</span>
     4138<span class="go">Translation in Z at epoch To: -0.52655 m</span>
     4139<span class="go">Translation rate in X:  0.00079 m/y</span>
     4140<span class="go">Translation rate in Y: -0.00060 m/y</span>
     4141<span class="go">Translation rate in Z: -0.00134 m/y</span>
     4142<span class="go">Rotation in X at epoch To: -25.91467 mas</span>
     4143<span class="go">Rotation in Y at epoch To:  -9.42645 mas</span>
     4144<span class="go">Rotation in Z at epoch To: -11.59935 mas</span>
     4145<span class="go">Rotation rate in X: -0.06667 mas/y</span>
     4146<span class="go">Rotation rate in Y:  0.75744 mas/y</span>
     4147<span class="go">Rotation rate in Z:  0.05133 mas/y</span>
     4148<span class="go">Scale at epoch To : 0.00000000171504</span>
     4149<span class="go">Scale rate: -0.00000000010201 /y</span>
     4150<span class="go">To: 1997.0</span>
     4151</pre></div>
     4152</div>
     4153<p>GDA94: The formulas for the transformation &#8216;ITRF2008-&gt;GDA94&#8217; are taken from <a class="reference internal" href="bnchelp.html#dawson2010a" id="id15">[13]</a>:</p>
     4154<div class="highlight-console"><div class="highlight"><pre><span class="go">Translation in X at epoch To: -0.08468 m</span>
     4155<span class="go">Translation in Y at epoch To: -0.01942 m</span>
     4156<span class="go">Translation in Z at epoch To:  0.03201 m</span>
     4157<span class="go">Translation rate in X:  0.00142 m/y</span>
     4158<span class="go">Translation rate in Y:  0.00134 m/y</span>
     4159<span class="go">Translation rate in Z:  0.00090 m/y</span>
     4160<span class="go">Rotation in X at epoch To:  0.4254 mas</span>
     4161<span class="go">Rotation in Y at epoch To: -2.2578 mas</span>
     4162<span class="go">Rotation in Z at epoch To: -2.4015 mas</span>
     4163<span class="go">Rotation rate in X: -1.5461 mas/y</span>
     4164<span class="go">Rotation rate in Y: -1.1820 mas/y</span>
     4165<span class="go">Rotation rate in Z: -1.1551 mas/y</span>
     4166<span class="go">Scale at epoch To : 0.000000009710</span>
     4167<span class="go">Scale rate: 0.000000000109 /y</span>
     4168<span class="go">To: 1994.0</span>
     4169</pre></div>
     4170</div>
     4171<p>SIRGAS2000: The formulas for the transformation &#8216;ITRF2008-&gt;SIRGAS2000&#8217; were provided by <a class="reference internal" href="bnchelp.html#ibge-dgc2016a" id="id16">[14]</a>:</p>
     4172<div class="highlight-console"><div class="highlight"><pre><span class="go">Translation in X at epoch To:  0.0020 m</span>
     4173<span class="go">Translation in Y at epoch To:  0.0041 m</span>
     4174<span class="go">Translation in Z at epoch To:  0.0039 m</span>
     4175<span class="go">Translation rate in X:  0.0000 m/y</span>
     4176<span class="go">Translation rate in Y:  0.0000 m/y</span>
     4177<span class="go">Translation rate in Z:  0.0000 m/y</span>
     4178<span class="go">Rotation in X at epoch To:  0.170 mas</span>
     4179<span class="go">Rotation in Y at epoch To: -0.030 mas</span>
     4180<span class="go">Rotation in Z at epoch To:  0.070 mas</span>
     4181<span class="go">Rotation rate in X:  0.000 mas/y</span>
     4182<span class="go">Rotation rate in Y:  0.000 mas/y</span>
     4183<span class="go">Rotation rate in Z:  0.000 mas/y</span>
     4184<span class="go">Scale at epoch To : -0.000000001000</span>
     4185<span class="go">Scale rate: 0.000000000000 /y</span>
     4186<span class="go">To: 0000.0</span>
     4187</pre></div>
     4188</div>
     4189<p>SIRGAS95: The formulas for the transformation &#8216;ITRF2005-&gt;SIRGAS95&#8217; were provided by <a class="reference internal" href="bnchelp.html#acuha2016a" id="id17">[15]</a> , parameters based on values from <a class="reference internal" href="bnchelp.html#sirgas2009a" id="id18">[16]</a>, Table 4.1:</p>
     4190<div class="highlight-console"><div class="highlight"><pre><span class="go">Translation in X at epoch To:  0.0077 m</span>
     4191<span class="go">Translation in Y at epoch To:  0.0058 m</span>
     4192<span class="go">Translation in Z at epoch To: -0.0138 m</span>
     4193<span class="go">Translation rate in X:  0.0000 m/y</span>
     4194<span class="go">Translation rate in Y:  0.0000 m/y</span>
     4195<span class="go">Translation rate in Z:  0.0000 m/y</span>
     4196<span class="go">Rotation in X at epoch To:  0.000 mas</span>
     4197<span class="go">Rotation in Y at epoch To:  0.000 mas</span>
     4198<span class="go">Rotation in Z at epoch To: -0.003 mas</span>
     4199<span class="go">Rotation rate in X:  0.000 mas/y</span>
     4200<span class="go">Rotation rate in Y:  0.000 mas/y</span>
     4201<span class="go">Rotation rate in Z:  0.000 mas/y</span>
     4202<span class="go">Scale at epoch To : 0.00000000157</span>
     4203<span class="go">Scale rate: -0.000000000000 /y</span>
     4204<span class="go">To: 1995.4</span>
     4205</pre></div>
     4206</div>
     4207<p>DREF91 14 Helmert transformation parameters have been introduced <a class="reference internal" href="bnchelp.html#franke2008a" id="id19">[17]</a>:</p>
     4208<div class="highlight-console"><div class="highlight"><pre><span class="go">Translation in X at epoch To: -0.0118 m</span>
     4209<span class="go">Translation in Y at epoch To:  0.1432 m</span>
     4210<span class="go">Translation in Z at epoch To: -0.1117 m</span>
     4211<span class="go">Translation rate in X:  0.0001 m/y</span>
     4212<span class="go">Translation rate in Y:  0.0001 m/y</span>
     4213<span class="go">Translation rate in Z: -0.0018 m/y</span>
     4214<span class="go">Rotation in X at epoch To:   3.291 mas</span>
     4215<span class="go">Rotation in Y at epoch To:   6.190 mas</span>
     4216<span class="go">Rotation in Z at epoch To: -11.012 mas</span>
     4217<span class="go">Rotation rate in X:  0.081 mas/y</span>
     4218<span class="go">Rotation rate in Y:  0.490 mas/y</span>
     4219<span class="go">Rotation rate in Z: -0.792 mas/y</span>
     4220<span class="go">Scale at epoch To : 0.00000001224</span>
     4221<span class="go">Scale rate: 0.00000000008 /y</span>
     4222<span class="go">To: 2000.0</span>
     4223</pre></div>
     4224</div>
     4225<p>Custom: Feel free to specify your own 14 Helmert Transformation parameters for transformations from IGS08/ITRF2008 into your own target system (see <a class="reference internal" href="#fig-30"><span class="std std-numref">Fig. 32</span></a>).</p>
     4226<div class="figure" id="id57">
     4227<span id="fig-30"></span><a class="reference internal image-reference" href="_images/fig_30.png"><img alt="_images/fig_30.png" src="_images/fig_30.png" style="width: 355.2px; height: 184.79999999999998px;" /></a>
     4228<p class="caption"><span class="caption-number">Fig. 32 </span><span class="caption-text">Setting BNC&#8217;s Custom Transformation Parameters window, example for &#8216;ITRF2008-&gt;GDA94&#8217;</span></p>
     4229</div>
     4230</div>
     4231<div class="section" id="center-of-mass-optional">
     4232<h4>Center of Mass - optional<a class="headerlink" href="#center-of-mass-optional" title="Permalink to this headline">¶</a></h4>
     4233<p>BNC allows to either refer Broadcast Corrections to the satellite&#8217;s Center of Mass (CoM) or to the satellite&#8217;s Antenna Phase Center (APC). By default, corrections refer to APC. Tick &#8216;Center of Mass&#8217; to refer uploaded corrections to CoM.</p>
     4234</div>
     4235<div class="section" id="sp3-file-optional">
     4236<h4>SP3 File - optional<a class="headerlink" href="#sp3-file-optional" title="Permalink to this headline">¶</a></h4>
     4237<p>Specify a path for saving the generated orbit corrections as SP3 orbit files. If the specified directory does not exist, BNC will not create SP3 orbit files. The following is a path example for a Linux system:</p>
     4238<div class="highlight-console"><div class="highlight"><pre><span class="go">/home/user/BNC${GPSWD}.sp3</span>
     4239</pre></div>
     4240</div>
     4241<p>Note that &#8216;${GPSWD}&#8217; produces the GPS Week and Day number in the filename. Default is an empty option field, meaning that you do not want BNC to save the uploaded stream content in daily SP3 files.</p>
     4242<p>As a SP3 file content should be referred to the satellites&#8217; Center of Mass (CoM) while Broadcast Corrections are referred to the satellites&#8217; APC, an offset has to be applied which is available from an IGS ANTEX file (see option &#8216;ANTEX File&#8217; below). Hence, you should specify the &#8216;ANTEX File&#8217; path there if you want to save the stream content in SP3 format. If you do not specify an &#8216;ANTEX File&#8217; path, the SP3 file content will be referred to the satellites APCs.</p>
     4243<p>The filenames for the daily SP3 files follow the convention for SP3 filenames. The first three characters of each filename are set to &#8216;BNC&#8217;. Note that clocks in the SP3 orbit files are not corrected for the conventional periodic relativistic effect.</p>
     4244<p>In case the &#8216;Combine Corrections&#8217; table contains only one Broadcast Correction stream, BNC will merge that stream with Broadcast Ephemeris to save results in files specified here through SP3 and/or Clock RINEX file path. In such a case you have to define only the SP3 and Clock RINEX file path and no further option in the &#8216;Upload Corrections&#8217; table.</p>
     4245<p>Note that BNC outputs a complete list of SP3 &#8216;Epoch Header Records&#8217;, even if no &#8216;Position and Clock Records&#8217; are available for certain epochs because of stream outages. Note further that the &#8216;Number of Epochs&#8217; in the first SP3 header record may not be correct because that number is not available when the file is created. Depending on your processing software (e.g. Bernese GNSS Software, BSW) it could therefore be necessary to correct an incorrect &#8216;Number of Epochs&#8217; in the file before you use it in post processing.</p>
     4246</div>
     4247<div class="section" id="rnx-file-optional">
     4248<h4>RNX File - optional<a class="headerlink" href="#rnx-file-optional" title="Permalink to this headline">¶</a></h4>
     4249<p>The clock corrections generated by BNC for upload can be logged in Clock RINEX format. The file naming follows the RINEX convention.</p>
     4250<p>Specify a path for saving the generated clock corrections as Clock RINEX files. If the specified directory does not exist, BNC will not create Clock RINEX files. The following is a path example for a Linux system:</p>
     4251<div class="highlight-console"><div class="highlight"><pre><span class="go">/home/user/BNC${GPSWD}.clk</span>
     4252</pre></div>
     4253</div>
     4254<p>Note that &#8216;${GPSWD}&#8217; produces the GPS Week and Day number in the filename. Note further that clocks in the Clock RINEX files are not corrected for the conventional periodic relativistic effect.</p>
     4255</div>
     4256<div class="section" id="pid-sid-iod-optional">
     4257<h4>PID, SID, IOD - optional<a class="headerlink" href="#pid-sid-iod-optional" title="Permalink to this headline">¶</a></h4>
     4258<p>When applying Broadcast Ephemeris corrections in a PPP algorithm or in a combination of several correction streams, it is important for the client software to receive information on the continuity of discontinuity of the stream contents. Here you can specify three ID&#8217;s to describe the contents of your Broadcast Ephemeris correction stream when it is uploaded.</p>
     4259<ul class="simple">
     4260<li>A &#8216;SSR Provider ID&#8217; is issued by RTCM SC-104 on request to identify a SSR service (see e.g. url{<a class="reference external" href="http://software.rtcm-ntrip.org/wiki/SSRProvider">http://software.rtcm-ntrip.org/wiki/SSRProvider</a>}). This ID is globally unique. Values vary in the range of 0-65535. Values in the range of 0-255 are reserved for experimental services.</li>
     4261<li>A provider may generate several Broadcast Ephemeris correction streams with different contents. The &#8216;SSR Solution ID&#8217; indicates different SSR services of one SSR provider. Values vary in the range of 0-15.</li>
     4262<li>A change of the &#8216;IOD SSR&#8217; is used to indicate a change in the SSR generating configuration which may be relevant for the rover. Values vary in the range of 0-15.</li>
     4263</ul>
     4264</div>
     4265<div class="section" id="interval-mandatory-if-upload-table-entries-specified">
     4266<h4>Interval - mandatory if &#8216;Upload Table&#8217; entries specified<a class="headerlink" href="#interval-mandatory-if-upload-table-entries-specified" title="Permalink to this headline">¶</a></h4>
     4267<p>Select the length of Clock RINEX files and SP3 Orbit files. The default value is 1 day.</p>
     4268</div>
     4269<div class="section" id="sampling">
     4270<h4>Sampling<a class="headerlink" href="#sampling" title="Permalink to this headline">¶</a></h4>
     4271<p>BNC requires an orbit corrections sampling interval for the stream to be uploaded and sampling intervals for SP3 and Clock RINEX files. The outgoing stream&#8217;s clock correction sampling interval follows that of incoming corrections and is therefore nothing to be specified here.</p>
     4272<div class="section" id="orbits-orb-mandatory-if-upload-table-entries-specified">
     4273<h5>Orbits (Orb) - mandatory if &#8216;Upload Table&#8217; entries specified<a class="headerlink" href="#orbits-orb-mandatory-if-upload-table-entries-specified" title="Permalink to this headline">¶</a></h5>
     4274<p>Select the stream&#8217;s orbit correction sampling interval in seconds. A value of 60 sec may be appropriate. A value of zero &#8216;0&#8217; tells BNC to upload all orbit correction samples coming in from the real-time GNSS engine along with the clock correction samples to produce combined orbit and clock corrections to Broadcast Ephemeris (1060 for GPS, 1066 for GLONASS).</p>
     4275<p>Configuration examples:</p>
     4276<p>Let us suppose a real-time network engine supporting BNC every 5 sec with GPS Broadcast Corrections for orbits, clocks and code biases in &#8216;RTNET&#8217; stream format:</p>
     4277<p>With &#8216;Sampling Orb&#8217; set to &#8216;0&#8217; BNC will produce</p>
     4278<ul class="simple">
    41894279<li>Every 5 sec a 1059 message for GPS code biases,</li>
    41904280<li>Every 5 sec a 1060 message for combined orbit and clock corrections to GPS Broadcast Ephemeris.</li>
    41914281</ul>
    4192 <br>
    4193 <li>With 'Sampling Orb' set to '5' BNC will produce</li>
    4194 <ul>
     4282<p>With &#8216;Sampling Orb&#8217; set to &#8216;5&#8217; BNC will produce</p>
     4283<ul class="simple">
    41954284<li>Every 5 sec a 1057 message for GPS orbit corrections to Broadcast Ephemeris,</li>
    41964285<li>Every 5 sec a 1058 message for GPS clock corrections to Broadcast Ephemeris,</li>
    41974286<li>Every 5 sec a 1059 message for GPS code biases.</li>
    41984287</ul>
    4199 <br>
    4200 <li>With 'Sampling Orb' set to '10' BNC will produce</li>
    4201 <ul>
     4288<p>With &#8216;Sampling Orb&#8217; set to &#8216;10&#8217; BNC will produce</p>
     4289<ul class="simple">
    42024290<li>Every 10 sec a 1057 message for GPS orbit corrections to Broadcast Ephemeris,</li>
    42034291<li>Every 5 sec a 1058 message for GPS clock corrections to Broadcast Ephemeris,</li>
    42044292<li>Every 5 sec a 1059 message for GPS code biases.</li>
    42054293</ul>
    4206 </ul>
    4207 <br>
    4208 Note that only when specifying a value of zero '0' (default) for 'Sampling Orb', BNC produces <u>combined</u> orbit and clock correction messages.
    4209 <p><h4>2.15.9.2 <a name="upclksp3">SP3 - mandatory if 'SP3 File' is specified</h4></p>
    4210 <p>Select the SP3 orbit file sampling interval in minutes. A value of 15 min may be appropriate. A value of zero '0' tells BNC to store all available samples into SP3 orbit files.</p>
    4211 
    4212 <p><h4>2.15.9.3 <a name="upclkrnx">RINEX (RNX) - mandatory if 'RNX File' is specified</h4></p>
    4213 <p>Select the Clock RINEX file sampling interval in seconds. A value of 10 sec may be appropriate. A value of zero '0' tells BNC to store all available samples into Clock RINEX files.</p>
    4214 
    4215 <p><h4>2.15.10 <a name="upcustom">Custom Trafo - optional if 'Upload Table' entries specified</h4></p>
    4216 <p>Hit 'Custom Trafo' to specify your own 14 parameter Helmert Transformation instead of selecting a predefined transformation through 'System' button.</p>
    4217 
    4218 <p><h4>2.15.11 <a name="upantex">ANTEX File - mandatory if 'SP3 File' is specified</h4></p>
    4219 <p>
    4220 IGS provides a file containing absolute phase center variations for GNSS satellite and receiver antennas in ANTEX format. Entering the full path to such an ANTEX file is required here for referring the SP3 file content to the satellite's Center of Mass (CoM). If you do not specify an ANTEX file, the SP3 file will contain orbit information which is referred to Antenna Phase Center (APC) instead of CoM.
    4221 </p>
    4222 <p>
    4223 The following screenshot shows the encoding and uploading of a stream of precise orbits and clocks coming from a real-time network engine in 'RTNET' ASCII format. The stream is uploaded to Ntrip Broadcaster 'products.igs-ip.net'. It is referred to APC and IGS08. Uploaded data are locally saved in SP3 and Clock RINEX format. The SSR Provider ID is set to 3. The SSR Solution ID and the Issue of Data SSR are set to 1. Required Broadcast Ephemeris are received via stream 'RTCM3EPH'.
    4224 </p>
    4225 <p><img src="IMG/screenshot26.png"/></p>
    4226 <p><u>Figure 31:</u> BNC producing Broadcast Corrections from incoming precise orbits and clocks and uploading them to an Ntrip Broadcaster</p>
    4227 <p>
    4228 The following screenshot shows the encoding and uploading of several Broadcast Ephemeris correction streams combined from streams CLK11, CLK21, CLK80, and CLK91. Combined streams are uploaded to different Ntrip Broadcasters and referred to different reference systems. One of the uploaded streams is locally saved in SP3 and Clock RINEX format. Different SSR Provider IDs, SSR Solution IDs and Issue of Data IDs are specified. Required Broadcast Ephemeris are received via stream 'RTCM3EPH'.
    4229 </p>
    4230 <p><img src="IMG/screenshot21.png"/></p>
    4231 <p><u>Figure 32:</u> BNC uploading a combined Broadcast Correction stream</p>
    4232 <p></p>
    4233 
    4234 <p><h4>2.16 <a name="upeph">Upload Ephemeris</h4></p>
    4235 <p>
    4236 BNC can generate a stream carrying only Broadcast Ephemeris in RTCM Version 3 format and upload it to an Ntrip Broadcaster.
    4237 </p>
    4238 
    4239 <p>
    4240 Note that Broadcast Ephemeris received in real-time have a system specific period of validity in BNC which is defined in accordance with the update rates of the navigation messages.
    4241 <ul>
     4294<p>Note that only when specifying a value of zero &#8216;0&#8217; (default) for &#8216;Sampling Orb&#8217;, BNC produces combined orbit and clock correction messages.</p>
     4295</div>
     4296<div class="section" id="sp3-mandatory-if-sp3-file-is-specified">
     4297<h5>SP3 - mandatory if &#8216;SP3 File&#8217; is specified<a class="headerlink" href="#sp3-mandatory-if-sp3-file-is-specified" title="Permalink to this headline">¶</a></h5>
     4298<p>Select the SP3 orbit file sampling interval in minutes. A value of 15 min may be appropriate. A value of zero &#8216;0&#8217; tells BNC to store all available samples into SP3 orbit files.</p>
     4299</div>
     4300<div class="section" id="rinex-rnx-mandatory-if-rnx-file-is-specified">
     4301<h5>RINEX (RNX) - mandatory if &#8216;RNX File&#8217; is specified<a class="headerlink" href="#rinex-rnx-mandatory-if-rnx-file-is-specified" title="Permalink to this headline">¶</a></h5>
     4302<p>Select the Clock RINEX file sampling interval in seconds. A value of 10 sec may be appropriate. A value of zero &#8216;0&#8217; tells BNC to store all available samples into Clock RINEX files.</p>
     4303</div>
     4304</div>
     4305<div class="section" id="custom-trafo-optional-if-upload-table-entries-specified">
     4306<h4>Custom Trafo - optional if &#8216;Upload Table&#8217; entries specified<a class="headerlink" href="#custom-trafo-optional-if-upload-table-entries-specified" title="Permalink to this headline">¶</a></h4>
     4307<p>Hit &#8216;Custom Trafo&#8217; to specify your own 14 parameter Helmert Transformation instead of selecting a predefined transformation through &#8216;System&#8217; button.</p>
     4308</div>
     4309<div class="section" id="antex-file-mandatory-if-sp3-file-is-specified">
     4310<h4>ANTEX File - mandatory if &#8216;SP3 File&#8217; is specified<a class="headerlink" href="#antex-file-mandatory-if-sp3-file-is-specified" title="Permalink to this headline">¶</a></h4>
     4311<p>IGS provides a file containing absolute phase center variations for GNSS satellite and receiver antennas in ANTEX format. Entering the full path to such an ANTEX file is required here for referring the SP3 file content to the satellite&#8217;s Center of Mass (CoM). If you do not specify an ANTEX file, the SP3 file will contain orbit information which is referred to Antenna Phase Center (APC) instead of CoM.</p>
     4312<p>The screenshot in <a class="reference internal" href="#fig-31"><span class="std std-numref">Fig. 33</span></a> shows the encoding and uploading of a stream of precise orbits and clocks coming from a real-time network engine in &#8216;RTNET&#8217; ASCII format. The stream is uploaded to Ntrip Broadcaster &#8216;products.igs-ip.net&#8217;. It is referred to APC and IGS08. Uploaded data are locally saved in SP3 and Clock RINEX format. The SSR Provider ID is set to 3. The SSR Solution ID and the Issue of Data SSR are set to 1. Required Broadcast Ephemeris are received via stream &#8216;RTCM3EPH&#8217;.</p>
     4313<div class="figure" id="id58">
     4314<span id="fig-31"></span><a class="reference internal image-reference" href="_images/fig_31.png"><img alt="_images/fig_31.png" src="_images/fig_31.png" style="width: 1117.0px; height: 754.0px;" /></a>
     4315<p class="caption"><span class="caption-number">Fig. 33 </span><span class="caption-text">BNC producing Broadcast Corrections from incoming precise orbits and clocks and uploading them to an Ntrip Broadcaster</span></p>
     4316</div>
     4317<p>The screenshot in <a class="reference internal" href="#fig-32"><span class="std std-numref">Fig. 34</span></a> shows the encoding and uploading of several Broadcast Ephemeris correction streams combined from streams CLK11, CLK21, CLK80, and CLK91. Combined streams are uploaded to different Ntrip Broadcasters and referred to different reference systems. One of the uploaded streams is locally saved in SP3 and Clock RINEX format. Different SSR Provider IDs, SSR Solution IDs and Issue of Data IDs are specified. Required Broadcast Ephemeris are received via stream &#8216;RTCM3EPH&#8217;.</p>
     4318<div class="figure" id="id59">
     4319<span id="fig-32"></span><a class="reference internal image-reference" href="_images/fig_32.png"><img alt="_images/fig_32.png" src="_images/fig_32.png" style="width: 1126.0px; height: 834.0px;" /></a>
     4320<p class="caption"><span class="caption-number">Fig. 34 </span><span class="caption-text">BNC uploading a combined Broadcast Correction stream</span></p>
     4321</div>
     4322</div>
     4323</div>
     4324<div class="section" id="upload-ephemeris">
     4325<span id="index-41"></span><h3>Upload Ephemeris<a class="headerlink" href="#upload-ephemeris" title="Permalink to this headline">¶</a></h3>
     4326<p>BNC can generate a stream carrying only Broadcast Ephemeris in RTCM Version 3 format and upload it to an Ntrip Broadcaster <a class="reference internal" href="#fig-33"><span class="std std-numref">(Fig. 35)</span></a>. Note that Broadcast Ephemeris received in real-time have a system specific period of validity in BNC which is defined in accordance with the update rates of the navigation messages.</p>
     4327<ul class="simple">
    42424328<li>GPS ephemeris will be interpreted as outdated and ignored when older than 4 hours.</li>
    42434329<li>GLONASS ephemeris will be interpreted as outdated and ignored when older than 1 hour.</li>
    … …  
    42474333<li>QZSS ephemeris will be interpreted as outdated and ignored when older than 4 hours.</li>
    42484334</ul>
    4249 A note 'OUTDATED EPHEMERIS' will be given in the logfile and the data will be disregarded when necessary.
    4250 </p>
    4251 <p>
    4252 Furthermore, received Broadcast Ephemeris parameters pass through a plausibility check in BNC which allows to ignore incorrect ephemeris data when necessary, leaving a note 'WRONG EPHEMERIS' in the logfile.
    4253 </p>
    4254 
    4255 <p><h4>2.16.1 <a name="brdcserver">Host &amp; Port - optional</h4></p>
    4256 <p>
    4257 Specify the 'Host' IP number or URL of an Ntrip Broadcaster to upload the stream. An empty option field means that you do not want to upload Broadcast Ephemeris.
    4258 </p>
    4259 <p>
    4260 Enter the Ntrip Broadcaster's IP 'Port' number for stream upload. Note that Ntrip Broadcasters are often configured to provide access through more than one port, usually ports 80 and 2101. If you experience communication problems on port 80, you should try to use the alternative port(s).
    4261 </p>
    4262 
    4263 <p><h4>2.16.2 <a name="brdcmount">Mountpoint &amp; Password - mandatory if 'Host' is set</h4></p>
    4264 <p>
    4265 BNC uploads a stream to the Ntrip Broadcaster by referring it to a dedicated mountpoint that has been set by its operator. Specify the mountpoint based on the details you received for your stream from the operator. It is often a 4-character ID (capital letters) plus an integer number.</p>
    4266 <p>The stream upload follows Ntrip Version 1 and may be protected through an upload 'Password'. Enter the password you received from the Ntrip Broadcaster operator along with the mountpoint.</p>
    4267 </p>
    4268 
    4269 <p><h4>2.16.3 <a name="brdcsmpl">Sampling - mandatory if 'Host' is set</h4></p>
    4270 Select the Broadcast Ephemeris repetition interval in seconds. Default is '5', meaning that a complete set of Broadcast Ephemeris is uploaded every 5 seconds.
    4271 </p>
    4272 
    4273 <p><img src="IMG/screenshot28.png"/></p>
    4274 <p><u>Figure 33:</u> BNC producing a Broadcast Ephemeris stream from navigation messages of globally distributed RTCM streams and uploading them in RTCM Version 3 format to an Ntrip Broadcaster</p>
    4275 
    4276 <p><h4>2.17 <a name="streams">Streams Canvas</h4></p>
    4277 <p>
    4278 Each stream on an Ntrip Broadcaster (and consequently on BNC) is defined using a unique source ID called mountpoint. An Ntrip Client like BNC accesses the desired stream by referring to its mountpoint. Information about streams and their mountpoints is available through the source-table maintained by the Ntrip Broadcaster.
    4279 </p>
    4280 
    4281 <p>
    4282 Streams selected for retrieval are listed under the 'Streams' canvas on BNC's main window. The list provides the following information either extracted from source-table(s) produced by the Ntrip Broadcasters or introduced by BNC's user:
    4283 </p>
    4284 <p>
    4285 <table>
    4286 <tr><td>'resource loader'&nbsp; </td><td>Ntrip Broadcaster URL and port, or<br>TCP/IP host and port, or<br>UDP port, or<br>Serial input port specification.</td></tr>
    4287 <tr><td>'mountpoint' &nbsp;</td><td>Mountpoint introduced by Ntrip Broadcaster, or<br>Mountpoint introduced by BNC's user.</td></tr>
    4288 <tr><td>'decoder' &nbsp;</td><td>Name of decoder used to handle the incoming stream content according to its format; editable.</td></tr>
    4289 <tr><td>'lat' &nbsp;</td><td>Approximate latitude of reference station, in degrees, north; editable if 'nmea' = 'yes'.</td></tr>
    4290 <tr><td>'long' &nbsp;</td><td>Approximate longitude of reference station, in degrees, east; editable if 'nmea' = 'yes'.</td></tr>
    4291 <tr><td>'nmea' &nbsp;</td><td>Indicates whether or not streaming needs to be initiated by BNC through sending NMEA-GGA message carrying position coordinates in 'lat' and 'long'.</td></tr>
    4292 <tr><td>'ntrip' &nbsp;</td><td>Selected Ntrip transport protocol version (1, 2, 2s, R, or U), or<br>'N' for TCP/IP streams without Ntrip, or<br>'UN' for UDP streams without Ntrip, or<br>'S' for serial input streams without Ntrip.</td></tr>
    4293 <tr><td>'bytes' &nbsp;</td><td>Number of bytes received.
     4335<p>A note &#8216;OUTDATED EPHEMERIS&#8217; will be given in the logfile and the data will be disregarded when necessary. Furthermore, received Broadcast Ephemeris parameters pass through a plausibility check in BNC which allows to ignore incorrect ephemeris data when necessary, leaving a note &#8216;WRONG EPHEMERIS&#8217; in the logfile.</p>
     4336<div class="section" id="host-port-optional">
     4337<h4>Host &amp; Port - optional<a class="headerlink" href="#host-port-optional" title="Permalink to this headline">¶</a></h4>
     4338<p>Specify the &#8216;Host&#8217; IP number or URL of an Ntrip Broadcaster to upload the stream. An empty option field means that you do not want to upload Broadcast Ephemeris. Enter the Ntrip Broadcaster&#8217;s IP &#8216;Port&#8217; number for stream upload. Note that Ntrip Broadcasters are often configured to provide access through more than one port, usually ports 80 and 2101. If you experience communication problems on port 80, you should try to use the alternative port(s).</p>
     4339</div>
     4340<div class="section" id="mountpoint-password-mandatory-if-host-is-set">
     4341<h4>Mountpoint &amp; Password - mandatory if &#8216;Host&#8217; is set<a class="headerlink" href="#mountpoint-password-mandatory-if-host-is-set" title="Permalink to this headline">¶</a></h4>
     4342<p>BNC uploads a stream to the Ntrip Broadcaster by referring it to a dedicated mountpoint that has been set by its operator. Specify the mountpoint based on the details you received for your stream from the operator. It is often a 4-character ID (capital letters) plus an integer number. The stream upload follows Ntrip Version 1 and may be protected through an upload &#8216;Password&#8217;. Enter the password you received from the Ntrip Broadcaster operator along with the mountpoint.</p>
     4343</div>
     4344<div class="section" id="sampling-mandatory-if-host-is-set">
     4345<h4>Sampling - mandatory if &#8216;Host&#8217; is set<a class="headerlink" href="#sampling-mandatory-if-host-is-set" title="Permalink to this headline">¶</a></h4>
     4346<p>Select the Broadcast Ephemeris repetition interval in seconds. Default is &#8216;5&#8217;, meaning that a complete set of Broadcast Ephemeris is uploaded every 5 seconds.</p>
     4347<div class="figure" id="id60">
     4348<span id="fig-33"></span><a class="reference internal image-reference" href="_images/fig_33.png"><img alt="_images/fig_33.png" src="_images/fig_33.png" style="width: 1000.0px; height: 722.0px;" /></a>
     4349<p class="caption"><span class="caption-number">Fig. 35 </span><span class="caption-text">BNC producing a Broadcast Ephemeris stream from navigation messages of globally distributed RTCM streams and uploading them in RTCM Version 3 format to an Ntrip Broadcaster</span></p>
     4350</div>
     4351</div>
     4352</div>
     4353<div class="section" id="streams-canvas">
     4354<span id="index-42"></span><h3>Streams Canvas<a class="headerlink" href="#streams-canvas" title="Permalink to this headline">¶</a></h3>
     4355<p>Each stream on an Ntrip Broadcaster (and consequently on BNC) is defined using a unique source ID called mountpoint. An Ntrip Client like BNC accesses the desired stream by referring to its mountpoint. Information about streams and their mountpoints is available through the source-table maintained by the Ntrip Broadcaster. Streams selected for retrieval are listed under the &#8216;Streams&#8217; canvas on BNC&#8217;s main window. The list provides the following information either extracted from source-table(s) produced by the Ntrip Broadcasters or introduced by BNC&#8217;s user (<a class="reference internal" href="#tab-stream-canvas-keys"><span class="std std-numref">Table 12</span></a>).</p>
     4356<table border="1" class="docutils" id="id61">
     4357<span id="tab-stream-canvas-keys"></span><span id="index-43"></span><caption><span class="caption-number">Table 12 </span><span class="caption-text">Source table information listed in BNCs Stream Canvas.</span><a class="headerlink" href="#id61" title="Permalink to this table">¶</a></caption>
     4358<colgroup>
     4359<col width="11%" />
     4360<col width="89%" />
     4361</colgroup>
     4362<thead valign="bottom">
     4363<tr class="row-odd"><th class="head"><strong>Keyword</strong></th>
     4364<th class="head"><strong>Meaning</strong></th>
     4365</tr>
     4366</thead>
     4367<tbody valign="top">
     4368<tr class="row-even"><td>resource loader</td>
     4369<td>Ntrip Broadcaster URL and port, or
     4370TCP/IP host and port, or
     4371UDP port, or
     4372Serial input port specification.</td>
     4373</tr>
     4374<tr class="row-odd"><td>mountpoint</td>
     4375<td>Mountpoint introduced by Ntrip Broadcaster, or
     4376Mountpoint introduced by BNC&#8217;s user.</td>
     4377</tr>
     4378<tr class="row-even"><td>decoder</td>
     4379<td>Name of decoder used to handle the incoming stream content according to its format; editable.</td>
     4380</tr>
     4381<tr class="row-odd"><td>lat</td>
     4382<td>Approximate latitude of reference station, in degrees, north; editable if &#8216;nmea&#8217; = &#8216;yes&#8217;.</td>
     4383</tr>
     4384<tr class="row-even"><td>long</td>
     4385<td>Approximate longitude of reference station, in degrees, east; editable if &#8216;nmea&#8217; = &#8216;yes&#8217;.</td>
     4386</tr>
     4387<tr class="row-odd"><td>nmea</td>
     4388<td>Indicates whether or not streaming needs to be initiated by BNC through sending NMEA-GGA message carrying position coordinates in &#8216;lat&#8217; and &#8216;long&#8217;.</td>
     4389</tr>
     4390<tr class="row-even"><td>ntrip</td>
     4391<td>Selected Ntrip transport protocol version (1, 2, 2s, R, or U), or
     4392&#8216;N&#8217; for TCP/IP streams without Ntrip, or
     4393&#8216;UN&#8217; for UDP streams without Ntrip, or
     4394&#8216;S&#8217; for serial input streams without Ntrip.</td>
     4395</tr>
     4396<tr class="row-odd"><td>bytes</td>
     4397<td>Number of bytes received.</td>
     4398</tr>
     4399</tbody>
    42944400</table>
    4295 </p>
    4296 
    4297 <p><h4>2.17.1 <a name="streamedit">Edit Streams</h4></p>
    4298 <ul>
    4299 <li>
    4300 BNC automatically allocates one of its internal decoders to a stream based on the stream's 'format' and 'format-details' as given in the source-table. However, there might be cases where you need to override the automatic selection due to an incorrect source-table for example. BNC allows users to manually select the required decoder by editing the decoder string. Double click on the 'decoder' field, enter your preferred decoder and then hit Enter. Accepted decoder strings are 'RTCM_2.x', 'RTCM_3.x' and 'RTNET'.
    4301 </li>
    4302 <li>
    4303 In case you need to log the raw data as it is, BNC allows users to by-pass its decoders and directly save the input in daily logfiles. To do this, specify the decoder string as 'ZERO'. The generated filenames are created from the characters of the streams mountpoints plus two-digit numbers each for year, month, and day. Example: Setting the 'decoder' string for mountpoint WTZZ0 to 'ZERO' and running BNC on March 29, 2007 would save raw data in a file named WTZZ0_070329.
    4304 </li>
    4305 <li>
    4306 BNC can also retrieve streams from virtual reference stations (VRS). To initiate these streams, an approximate rover position needs to be sent in NMEA format to the Ntrip Broadcaster. In return, a user-specific data stream is generated, typically by Network RTK software. VRS streams are indicated by a 'yes' in the source-table as well as in the 'nmea' column on the 'Streams' canvas in BNC's main window. They are customized exactly to the latitude and longitude transmitted to the Ntrip Broadcaster via NMEA GGA sentences.
    4307 <br>If NMEA GGA sentences are not coming from a serially connected GNSS rover, BNC simulates them from the default latitude and longitude of the source-table as shown in the 'lat' and 'long' columns on the 'Streams' canvas. However, in many cases you would probably want to change these defaults according to your requirement. Double-click on 'lat' and 'long' fields, enter the values you wish to send and then hit Enter. The format is in positive north latitude degrees (e.g. for northern hemisphere: 52.436, for southern hemisphere: -24.567) and eastern longitude degrees (example: 358.872 or -1.128). Only streams with a 'yes' in their 'nmea' column can be edited. The position should preferably be a point within the VRS service area of the network. RINEX files generated from these streams will contain an additional COMMENT line in the header beginning with 'NMEA' showing the 'lat' and 'long' used.
    4308 <br>Note that when running BNC in a Local Area Network (LAN), NMEA strings may be blocked by a proxy server, firewall or virus scanner when not using the Ntrip Version 2 transport protocol.
    4309 </li>
    4310 </ul>
    4311 
    4312 <p><h4>2.17.2 <a name="streamdelete">Delete Stream</h4></p>
    4313 <p>
    4314 To remove a stream from the 'Streams' canvas in the main window, highlight it by clicking on it and hit the 'Delete Stream' button. You can also remove multiple streams simultaneously by highlighting them using +Shift or +Ctrl.</p>
    4315 
    4316 <p><h4>2.17.3 <a name="streamconf">Reconfigure Stream Selection On-the-fly</h4></p>
    4317 <p>
    4318 The streams selection can be changed on-the-fly without interrupting uninvolved threads in the running BNC process.
    4319 </p>
    4320 <p>
    4321 <u>Window mode:</u> Hit 'Reread &amp; Save Configuration' while BNC is in window mode and already processing data to let changes of your stream selection immediately become effective.
    4322 <p>
    4323 <u>No window mode:</u> When operating BNC online in 'no window' mode (command line option -nw), you force BNC to reread its 'mountPoints' configuration option from disk at pre-defined intervals. Select '1 min', '1 hour', or '1 day' as 'Reread configuration' option to reread the 'mountPoints' option every full minute, hour, or day. This lets a 'mountPoints' option edited in between in the configuration file become effective without terminating uninvolved threads. See section 'Configuration Examples' for configuration file examples and section 'Reread Configuration' for a list of other on-the-fly changeable options.
    4324 </p>
    4325 
    4326 <p><h4>2.18 <a name="logs">Logging Canvas</h4></p>
    4327 <p>
    4328 The 'Logging Canvas' above the bottom menu bar on the main window labeled 'Log', 'Throughput', 'Latency', and 'PPP Plot' provides control of BNC's activities. Tabs are available for continuously showing logfile content, for a plot controlling the bandwidth consumption, a plot showing stream latencies, and for time series plots of PPP results.
    4329 </p>
    4330 <p><h4>2.18.1 <a name="logfile">Log</h4></p>
    4331 <p>
    4332 Records of BNC's activities are shown in the 'Log' tab. They can be saved into a file when a valid path is specified in the 'Logfile (full path)' field.
    4333 </p>
    4334 
    4335 <p><h4>2.18.2 <a name="throughput">Throughput</h4></p>
    4336 <p>
    4337 The bandwidth consumption per stream is shown in the 'Throughput' tab in bits per second (bps) or kilobits per second (kbps). The following figure shows an example for the bandwidth consumption of incoming streams.
    4338 </p>
    4339 
    4340 <p><img src="IMG/screenshot08.png"/></p>
    4341 <p><u>Figure 34:</u> Bandwidth consumption of RTCM streams received by BNC</p>
    4342 
    4343 <p><h4>2.18.3 <a name="latency">Latency</h4></p>
    4344 <p>
    4345 The latency of observations in each incoming stream is shown in the 'Latency' tab in milliseconds or seconds. Streams not carrying observations (e.g. those providing only Broadcast Ephemeris messages) or having an outage are not considered here and shown in red color. Note that the calculation of correct latencies requires the clock of the host computer to be properly synchronized. The next figure shows an example for the latency of incoming streams.
    4346 </p>
    4347 
    4348 <p><img src="IMG/screenshot07.png"/></p>
    4349 <p><u>Figure 35:</u> Latency of RTCM streams received by BNC</p>
    4350 
    4351 <p><h4>2.18.4 <a name="ppptab">PPP Plot</h4></p>
    4352 <p>
    4353 Precise Point Positioning time series of North (red), East (green) and Up (blue) coordinate components are shown in the 'PPP Plot' tab when a 'Mountpoint' option is defined under PPP (4). Values are referred to a priori reference coordinates. The time as given in format [hh:mm] refers to GPS Time. The sliding PPP time series window covers a period of 5 minutes. Note that it may take up to 30 seconds or more until the first PPP solutions becomes available. The following figure shows the screenshot of a PPP time series plot of North, East and Up coordinate displacements.
    4354 </p>
    4355 
    4356 <p><img src="IMG/screenshot13.png"/></p>
    4357 <p><u>Figure 36:</u> Example for time series plot of displacements produced by BNC</p>
    4358 
    4359 <p><h4>2.19 <a name="bottom">Bottom Menu Bar</h4></p>
    4360 <p>
    4361 The bottom menu bar allows to add or delete streams to or from BNC's configuration and to start or stop it. It also provides access to BNC's online help function. The 'Add Stream' button opens a window that allows users to select one of several input communication links, see figure below.
    4362 </p>
    4363 
    4364 <p><img src="IMG/screenshot06.png"/></p>
    4365 <p><u>Figure 37:</u> Steam input communication links accepted by BNC</p>
    4366 
    4367 <p><h4>2.19.1 <a name="streamadd">Add Stream</h4></p>
    4368 <p>
    4369 Button 'Add Stream' allows you to pull streams either from an Ntrip Broadcaster or from a TCP/IP port, UPD port, or serial port.
    4370 </p>
    4371 
    4372 <p><h4>2.19.1.1 <a name="streamcaster">Add Stream - Coming from Caster</h4></p>
    4373 
    4374 <p>
    4375 Button 'Add Stream' &gt; 'Coming from Caster' opens a window that allows users to select data streams from an Ntrip Broadcaster according to their mountpoints and show a distribution map of offered streams.
    4376 </p>
    4377 
    4378 <p><h4>2.19.1.1.1 <a name="streamhost">Caster Host and Port - mandatory</h4></p>
    4379 <p>
    4380 Enter the Ntrip Broadcaster host IP and port number. Note that EUREF and IGS operate Ntrip Broadcasters at <u>http://www.euref-ip.net/home</u>, <u>http://www.igs-ip.net/home</u>, <u>http://products.igs-ip.net/home</u> and <u>http://mgex.igs-ip.net/home</u>.
    4381 </p>
    4382 
    4383 <p><h4>2.19.1.1.2 <a name="streamtable">Casters Table - optional</h4></p>
    4384 <p>
    4385 It may be that you are not sure about your Ntrip Broadcaster's host and port number or you are interested in other broadcaster installations operated elsewhere. Hit 'Show' for a table of known broadcasters maintained at <u>www.rtcm-ntrip.org/home</u>. A window opens which allows selecting a broadcaster for stream retrieval, see figure below.
    4386 </p>
    4387 </p>
    4388 <p><img src="IMG/screenshot04.png"/></p>
    4389 
    4390 <p><u>Figure 38:</u> BNC's 'Select Broadcaster' table</p>
    4391 
    4392 <p><h4>2.19.1.1.3 <a name="streamuser">User and Password - mandatory for protected streams</h4></p>
    4393 <p>
    4394 Streams on Ntrip Broadcasters may be protected. Enter a valid 'User' ID and 'Password' for access to protected streams. Accounts are usually provided per Ntrip Broadcaster through a registration procedure. Register through <u>http://register.rtcm-ntrip.org</u> for access to protected streams from EUREF and IGS.
    4395 </p>
    4396 
    4397 <p><h4>2.19.1.1.4 <a name="gettable">Get Table</h4></p>
    4398 <p>
    4399 Use the 'Get Table' button to download the source-table from the Ntrip Broadcaster. Pay attention to data fields 'format' and 'format-details'. Keep in mind that BNC can only decode and convert streams that come in RTCM Version 2, RTCM Version 3, or RTNET format. For access to observations, Broadcast Ephemeris and Broadcast Corrections in RTCM format, streams must contain a selection of appropriate message types as listed in the Annex, cf. data field 'format-details' for available message types and their repetition rates in brackets. Note that in order to produce RINEX Navigation files, RTCM Version 3 streams containing message types 1019 (GPS) and 1020 (GLONASS) and 1043 (SBAS) and 1044 (QZSS) and 1045, 1046 (Galileo) and 63 (BDS/BeiDou, tentative message number) are required. Select your streams line by line, use +Shift and +Ctrl when necessary. The figure below provides an example source-table.
    4400 </p>
    4401 <p>
    4402 The content of data field 'nmea' tells you whether a stream retrieval needs to be initiated by BNC through sending an NMEA-GGA message carrying approximate position coordinates (Virtual Reference Station, VRS).
    4403 </p>
    4404 <p>
    4405 Hit 'OK' to return to the main window. If you wish, you can click on 'Add Stream' and repeat the process of retrieving streams from different casters.
    4406 </p>
    4407 <p><img src="IMG/screenshot05.png"/></p>
    4408 <p><u>Figure 39:</u> Broadcaster source-table shown by BNC</p>
    4409 
    4410 <p><h4>2.19.1.1.5 <a name="ntripv">Ntrip Version - mandatory</h4></p>
    4411 <p>
    4412 Some limitations and deficiencies of the Ntrip Version 1 stream transport protocol are solved in Ntrip Version 2. Improvements mainly concern a full HTTP compatibility in view of requirements coming from proxy servers. Version 2 is backwards compatible to Version 1. Options implemented in BNC are:
    4413 </p>
    4414 
    4415 <p>
    4416 <table>
    4417 <tr></tr>
    4418 <tr><td><b>Option &nbsp;  &nbsp; </b></td><td><b>Meaning</b></td></tr>
    4419 <tr><td>&nbsp; &nbsp; 1</td><td>Ntrip Version 1, TCP/IP</td></tr>
    4420 <tr><td>&nbsp; &nbsp; 2</td><td>Ntrip Version 2 in TCP/IP mode</td></tr>
    4421 <tr><td>&nbsp; &nbsp; 2s</td><td>Ntrip Version 2 in TCP/IP mode via SSL</td></tr>
    4422 <tr><td>&nbsp; &nbsp; R</td><td>Ntrip Version 2 in RTSP/RTP mode</td></tr>
    4423 <tr><td>&nbsp; &nbsp; U</td><td>Ntrip Version 2 in UDP mode</td></tr>
     4401<div class="section" id="edit-streams">
     4402<h4>Edit Streams<a class="headerlink" href="#edit-streams" title="Permalink to this headline">¶</a></h4>
     4403<p>BNC automatically allocates one of its internal decoders to a stream based on the stream&#8217;s &#8216;format&#8217; and &#8216;format-details&#8217; as given in the source-table. However, there might be cases where you need to override the automatic selection due to an incorrect source-table for example. BNC allows users to manually select the required decoder by editing the decoder string. Double click on the &#8216;decoder&#8217; field, enter your preferred decoder and then hit Enter. Accepted decoder strings are &#8216;RTCM_2.x&#8217;, &#8216;RTCM_3.x&#8217; and &#8216;RTNET&#8217;.</p>
     4404<p>In case you need to log the raw data as it is, BNC allows users to by-pass its decoders and directly save the input in daily logfiles. To do this, specify the decoder string as &#8216;ZERO&#8217;. The generated filenames are created from the characters of the streams mountpoints plus two-digit numbers each for year, month, and day. Example: Setting the &#8216;decoder&#8217; string for mountpoint WTZZ0 to &#8216;ZERO&#8217; and running BNC on March 29, 2007 would save raw data in a file named WTZZ0_070329.</p>
     4405<p>BNC can also retrieve streams from virtual reference stations (VRS). To initiate these streams, an approximate rover position needs to be sent in NMEA format to the Ntrip Broadcaster. In return, a user-specific data stream is generated, typically by Network RTK software. VRS streams are indicated by a &#8216;yes&#8217; in the source-table as well as in the &#8216;nmea&#8217; column on the &#8216;Streams&#8217; canvas in BNC&#8217;s main window. They are customized exactly to the latitude and longitude transmitted to the Ntrip Broadcaster via NMEA GGA sentences.</p>
     4406<p>If NMEA GGA sentences are not coming from a serially connected GNSS rover, BNC simulates them from the default latitude and longitude of the source-table as shown in the &#8216;lat&#8217; and &#8216;long&#8217; columns on the &#8216;Streams&#8217; canvas. However, in many cases you would probably want to change these defaults according to your requirement. Double-click on &#8216;lat&#8217; and &#8216;long&#8217; fields, enter the values you wish to send and then hit Enter. The format is in positive north latitude degrees (e.g. for northern hemisphere: 52.436, for southern hemisphere: -24.567) and eastern longitude degrees (example: 358.872 or -1.128). Only streams with a &#8216;yes&#8217; in their &#8216;nmea&#8217; column can be edited. The position should preferably be a point within the VRS service area of the network. RINEX files generated from these streams will contain an additional COMMENT line in the header beginning with &#8216;NMEA&#8217; showing the &#8216;lat&#8217; and &#8216;long&#8217; used.</p>
     4407<p>Note that when running BNC in a Local Area Network (LAN), NMEA strings may be blocked by a proxy server, firewall or virus scanner when not using the Ntrip Version 2 transport protocol.</p>
     4408</div>
     4409<div class="section" id="delete-streams">
     4410<h4>Delete Streams<a class="headerlink" href="#delete-streams" title="Permalink to this headline">¶</a></h4>
     4411<p>To remove a stream from the &#8216;Streams&#8217; canvas in the main window, highlight it by clicking on it and hit the &#8216;Delete Stream&#8217; button. You can also remove multiple streams simultaneously by highlighting them using +Shift or +Ctrl.</p>
     4412</div>
     4413<div class="section" id="reconfigure-stream-selection-on-the-fly">
     4414<h4>Reconfigure Stream Selection On-the-fly<a class="headerlink" href="#reconfigure-stream-selection-on-the-fly" title="Permalink to this headline">¶</a></h4>
     4415<p>The streams selection can be changed on-the-fly without interrupting uninvolved threads in the running BNC process.</p>
     4416<p>Window mode: Hit &#8216;Reread &amp; Save Configuration&#8217; while BNC is in window mode and already processing data to let changes of your stream selection immediately become effective.</p>
     4417<p>No window mode: When operating BNC online in &#8216;no window&#8217; mode (command line option -nw), you force BNC to reread its &#8216;mountPoints&#8217; configuration option from disk at pre-defined intervals. Select &#8216;1 min&#8217;, &#8216;1 hour&#8217;, or &#8216;1 day&#8217; as &#8216;Reread configuration&#8217; option to reread the &#8216;mountPoints&#8217; option every full minute, hour, or day. This lets a &#8216;mountPoints&#8217; option edited in between in the configuration file become effective without terminating uninvolved threads. See section &#8216;Configuration Examples&#8217; for configuration file examples and section &#8216;Reread Configuration&#8217; for a list of other on-the-fly changeable options.</p>
     4418</div>
     4419</div>
     4420<div class="section" id="logging-canvas">
     4421<span id="index-44"></span><h3>Logging Canvas<a class="headerlink" href="#logging-canvas" title="Permalink to this headline">¶</a></h3>
     4422<p>The &#8216;Logging Canvas&#8217; above the bottom menu bar on the main window labeled &#8216;Log&#8217;, &#8216;Throughput&#8217;, &#8216;Latency&#8217;, and &#8216;PPP Plot&#8217; provides control of BNC&#8217;s activities. Tabs are available for continuously showing logfile content, for a plot controlling the bandwidth consumption, a plot showing stream latencies, and for time series plots of PPP results.</p>
     4423<div class="section" id="log">
     4424<h4>Log<a class="headerlink" href="#log" title="Permalink to this headline">¶</a></h4>
     4425<p>Records of BNC&#8217;s activities are shown in the &#8216;Log&#8217; tab. They can be saved into a file when a valid path is specified in the &#8216;Logfile (full path)&#8217; field.</p>
     4426</div>
     4427<div class="section" id="throughput">
     4428<h4>Throughput<a class="headerlink" href="#throughput" title="Permalink to this headline">¶</a></h4>
     4429<p>The bandwidth consumption per stream is shown in the &#8216;Throughput&#8217; tab in bits per second (bps) or kilobits per second (kbps). <a class="reference internal" href="#fig-34"><span class="std std-numref">Fig. 36</span></a> shows an example for the bandwidth consumption of incoming streams.</p>
     4430<div class="figure" id="id62">
     4431<span id="fig-34"></span><a class="reference internal image-reference" href="_images/fig_34.png"><img alt="_images/fig_34.png" src="_images/fig_34.png" style="width: 783.0px; height: 177.0px;" /></a>
     4432<p class="caption"><span class="caption-number">Fig. 36 </span><span class="caption-text">Bandwidth consumption of RTCM streams received by BNC</span></p>
     4433</div>
     4434</div>
     4435<div class="section" id="id20">
     4436<h4>Latency<a class="headerlink" href="#id20" title="Permalink to this headline">¶</a></h4>
     4437<p>The latency of observations in each incoming stream is shown in the &#8216;Latency&#8217; tab in milliseconds or seconds. Streams not carrying observations (e.g. those providing only Broadcast Ephemeris messages) or having an outage are not considered here and shown in red color. Note that the calculation of correct latencies requires the clock of the host computer to be properly synchronized. <a class="reference internal" href="#fig-35"><span class="std std-numref">Fig. 37</span></a> shows an example for the latency of incoming streams.</p>
     4438<div class="figure" id="id63">
     4439<span id="fig-35"></span><a class="reference internal image-reference" href="_images/fig_35.png"><img alt="_images/fig_35.png" src="_images/fig_35.png" style="width: 782.0px; height: 177.0px;" /></a>
     4440<p class="caption"><span class="caption-number">Fig. 37 </span><span class="caption-text">Latency of RTCM streams received by BNC</span></p>
     4441</div>
     4442</div>
     4443<div class="section" id="ppp-plot">
     4444<h4>PPP Plot<a class="headerlink" href="#ppp-plot" title="Permalink to this headline">¶</a></h4>
     4445<p>Precise Point Positioning time series of North (red), East (green) and Up (blue) coordinate components are shown in the &#8216;PPP Plot&#8217; tab when a &#8216;Mountpoint&#8217; option is defined under PPP (4). Values are referred to a priori reference coordinates. The time as given in format [hh:mm] refers to GPS Time. The sliding PPP time series window covers a period of 5 minutes. Note that it may take up to 30 seconds or more until the first PPP solutions becomes available. <a class="reference internal" href="#fig-36"><span class="std std-numref">Fig. 38</span></a> shows the screenshot of a PPP time series plot of North, East and Up coordinate displacements.</p>
     4446<div class="figure" id="id64">
     4447<span id="fig-36"></span><a class="reference internal image-reference" href="_images/fig_36.png"><img alt="_images/fig_36.png" src="_images/fig_36.png" style="width: 784.0px; height: 305.0px;" /></a>
     4448<p class="caption"><span class="caption-number">Fig. 38 </span><span class="caption-text">Example for time series plot of displacements produced by BNC</span></p>
     4449</div>
     4450</div>
     4451</div>
     4452<div class="section" id="bottom-menu-bar">
     4453<h3>Bottom Menu Bar<a class="headerlink" href="#bottom-menu-bar" title="Permalink to this headline">¶</a></h3>
     4454<p>The bottom menu bar allows to add or delete streams to or from BNC&#8217;s configuration and to start or stop it. It also provides access to BNC&#8217;s online help function. The &#8216;Add Stream&#8217; button opens a window that allows users to select one of several input communication links, see <a class="reference internal" href="#fig-37"><span class="std std-numref">Fig. 39</span></a>.</p>
     4455<div class="figure" id="id65">
     4456<span id="fig-37"></span><a class="reference internal image-reference" href="_images/fig_37.png"><img alt="_images/fig_37.png" src="_images/fig_37.png" style="width: 427.0px; height: 115.0px;" /></a>
     4457<p class="caption"><span class="caption-number">Fig. 39 </span><span class="caption-text">Steam input communication links accepted by BNC</span></p>
     4458</div>
     4459<div class="section" id="add-stream">
     4460<h4>Add Stream<a class="headerlink" href="#add-stream" title="Permalink to this headline">¶</a></h4>
     4461<p>Button &#8216;Add Stream&#8217; allows you to pull streams either from an Ntrip Broadcaster or from a TCP/IP port, UPD port, or serial port.</p>
     4462</div>
     4463<div class="section" id="add-delete-stream-coming-from-caster">
     4464<h4>Add/Delete Stream - Coming from Caster<a class="headerlink" href="#add-delete-stream-coming-from-caster" title="Permalink to this headline">¶</a></h4>
     4465<p>Button &#8216;Add Stream&#8217; &gt; &#8216;Coming from Caster&#8217; opens a window that allows users to select data streams from an Ntrip Broadcaster according to their mountpoints and show a distribution map of offered streams.</p>
     4466<p>Button ‘Delete Stream’ allows you to delete streams previously selected for retrieval as listed under the ‘Streams’ canvas on BNC’s main window.</p>
     4467<div class="section" id="caster-host-and-port-mandatory">
     4468<h5>Caster Host and Port - mandatory<a class="headerlink" href="#caster-host-and-port-mandatory" title="Permalink to this headline">¶</a></h5>
     4469<p>Enter the Ntrip Broadcaster host IP and port number. Note that EUREF and IGS operate Ntrip Broadcasters at <a class="reference external" href="http://www.euref-ip.net/home">http://www.euref-ip.net/home</a>, <a class="reference external" href="http://www.igs-ip.net/home">http://www.igs-ip.net/home</a>, <a class="reference external" href="http://products.igs-ip.net/home">http://products.igs-ip.net/home</a> and <a class="reference external" href="http://mgex.igs-ip.net/home">http://mgex.igs-ip.net/home</a>.</p>
     4470</div>
     4471<div class="section" id="casters-table-optional">
     4472<h5>Casters Table - optional<a class="headerlink" href="#casters-table-optional" title="Permalink to this headline">¶</a></h5>
     4473<p>It may be that you are not sure about your Ntrip Broadcaster&#8217;s host and port number or you are interested in other broadcaster installations operated elsewhere. Hit &#8216;Show&#8217; for a table of known broadcasters maintained at www.rtcm-ntrip.org/home. A window opens which allows selecting a broadcaster for stream retrieval, see <a class="reference internal" href="#fig-38"><span class="std std-numref">Fig. 40</span></a>.</p>
     4474<div class="figure" id="id66">
     4475<span id="fig-38"></span><a class="reference internal image-reference" href="_images/fig_38.png"><img alt="_images/fig_38.png" src="_images/fig_38.png" style="width: 1123.0px; height: 710.0px;" /></a>
     4476<p class="caption"><span class="caption-number">Fig. 40 </span><span class="caption-text">BNC&#8217;s &#8216;Select Broadcaster&#8217; table</span></p>
     4477</div>
     4478</div>
     4479<div class="section" id="user-and-password-mandatory-for-protected-streams">
     4480<h5>User and Password - mandatory for protected streams<a class="headerlink" href="#user-and-password-mandatory-for-protected-streams" title="Permalink to this headline">¶</a></h5>
     4481<p>Streams on Ntrip Broadcasters may be protected. Enter a valid &#8216;User&#8217; ID and &#8216;Password&#8217; for access to protected streams. Accounts are usually provided per Ntrip Broadcaster through a registration procedure. Register through <a class="reference external" href="http://register.rtcm-ntrip.org">http://register.rtcm-ntrip.org</a> for access to protected streams from EUREF and IGS.</p>
     4482</div>
     4483<div class="section" id="get-table">
     4484<h5>Get Table<a class="headerlink" href="#get-table" title="Permalink to this headline">¶</a></h5>
     4485<p>Use the &#8216;Get Table&#8217; button to download the source-table from the Ntrip Broadcaster. Pay attention to data fields &#8216;format&#8217; and &#8216;format-details&#8217;. Keep in mind that BNC can only decode and convert streams that come in RTCM Version 2, RTCM Version 3, or RTNET format. For access to observations, Broadcast Ephemeris and Broadcast Corrections in RTCM format, streams must contain a selection of appropriate message types as listed in the Annex, cf. data field &#8216;format-details&#8217; for available message types and their repetition rates in brackets. Note that in order to produce RINEX Navigation files, RTCM Version 3 streams containing message types 1019 (GPS) and 1020 (GLONASS) and 1043 (SBAS) and 1044 (QZSS) and 1045, 1046 (Galileo) and 63 (BDS/BeiDou, tentative message number) are required. Select your streams line by line, use +Shift and +Ctrl when necessary. <a class="reference internal" href="#fig-39"><span class="std std-numref">Fig. 41</span></a> provides an example source-table.</p>
     4486<p>The content of data field &#8216;nmea&#8217; tells you whether a stream retrieval needs to be initiated by BNC through sending an NMEA-GGA message carrying approximate position coordinates (Virtual Reference Station, VRS).</p>
     4487<p>Hit &#8216;OK&#8217; to return to the main window. If you wish, you can click on &#8216;Add Stream&#8217; and repeat the process of retrieving streams from different casters.</p>
     4488<div class="figure" id="id67">
     4489<span id="fig-39"></span><a class="reference internal image-reference" href="_images/fig_39.png"><img alt="_images/fig_39.png" src="_images/fig_39.png" style="width: 1064.0px; height: 434.0px;" /></a>
     4490<p class="caption"><span class="caption-number">Fig. 41 </span><span class="caption-text">Broadcaster source-table shown by BNC</span></p>
     4491</div>
     4492</div>
     4493<div class="section" id="ntrip-version-mandatory">
     4494<h5>Ntrip Version - mandatory<a class="headerlink" href="#ntrip-version-mandatory" title="Permalink to this headline">¶</a></h5>
     4495<p>Some limitations and deficiencies of the Ntrip Version 1 stream transport protocol are solved in Ntrip Version 2. Improvements mainly concern a full HTTP compatibility in view of requirements coming from proxy servers. Version 2 is backwards compatible to Version 1. Options implemented in BNC are summarized in <a class="reference internal" href="#tab-ntrip-options"><span class="std std-numref">Table 13</span></a>.</p>
     4496<table border="1" class="docutils" id="id68">
     4497<span id="tab-ntrip-options"></span><span id="index-45"></span><caption><span class="caption-number">Table 13 </span><span class="caption-text">Ntrip options implemented in BNC.</span><a class="headerlink" href="#id68" title="Permalink to this table">¶</a></caption>
     4498<colgroup>
     4499<col width="30%" />
     4500<col width="70%" />
     4501</colgroup>
     4502<thead valign="bottom">
     4503<tr class="row-odd"><th class="head"><strong>Option</strong></th>
     4504<th class="head"><strong>Meaning</strong></th>
     4505</tr>
     4506</thead>
     4507<tbody valign="top">
     4508<tr class="row-even"><td>1</td>
     4509<td>Ntrip Version 1, TCP/IP</td>
     4510</tr>
     4511<tr class="row-odd"><td>2</td>
     4512<td>Ntrip Version 2 in TCP/IP mode</td>
     4513</tr>
     4514<tr class="row-even"><td>2s</td>
     4515<td>Ntrip Version 2 in TCP/IP mode via SSL</td>
     4516</tr>
     4517<tr class="row-odd"><td>R</td>
     4518<td>Ntrip Version 2 in RTSP/RTP mode</td>
     4519</tr>
     4520<tr class="row-even"><td>U</td>
     4521<td>Ntrip Version 2 in UDP mode</td>
     4522</tr>
     4523</tbody>
    44244524</table>
    4425 </p>
    4426 
    4427 <p>
    4428 If Ntrip Version 2 is supported by the broadcaster:
    4429 </p>
    4430 <ul>
    4431 <li>Try using option '2' if your streams are otherwise blocked by a proxy server operated in front of BNC.</li>
    4432 <li>When using Ntrip Version 2 via SSL (option '2s') you need to specify the appropriate 'Caster port' for that. It is usually port number 443. Clarify 'SSL' options offered in panel 'Network'.</li>
    4433 <li>Option 'R' or 'U' may be selected if latency is more important than completeness for your application. Note that the latency reduction is likely to be in the order of 0.5 sec or less. Note further that options 'R' (RTSP/RTP mode) and 'U' (UDP mode) are not accepted by proxy servers and a mobile Internet Service Provider may not support it.</li>
    4434 </ul>
    4435 <p>
    4436 Select option '1' if you are not sure whether the broadcaster supports Ntrip Version 2.</li>
    4437 </p>
    4438 
    4439 <p><h4>2.19.1.1.6 <a name="castermap">Map - optional</h4></p>
    4440 <p>
    4441 Button 'Map' opens a window to show a distribution map of the caster's streams. You may like to zoom in or out using the mouse. Left button: draw a rectangle to zoom, right button: zoom out, middle button: zoom back.
    4442 </p>
    4443 
    4444 <p><img src="IMG/screenshot24.png"/></p>
    4445 <p><u>Figure 40:</u> Stream distribution map shown by BNC as derived from Ntrip Broadcaster source-table</p>
    4446 
    4447 <p><h4>2.19.1.2 <a name="streamip">Add Stream - Coming from TCP/IP Port</h4></p>
    4448 <p>
    4449 Button 'Add Stream' &gt; 'Coming from TCP/IP Port' allows to retrieve streams via TCP directly from an IP address without using the Ntrip transport protocol. For that you:
    4450 <ul>
     4525<p>If Ntrip Version 2 is supported by the broadcaster:</p>
     4526<ul class="simple">
     4527<li>Try using option &#8216;2&#8217; if your streams are otherwise blocked by a proxy server operated in front of BNC.</li>
     4528<li>When using Ntrip Version 2 via SSL (option &#8216;2s&#8217;) you need to specify the appropriate &#8216;Caster port&#8217; for that. It is usually port number 443. Clarify &#8216;SSL&#8217; options offered in panel &#8216;Network&#8217;.</li>
     4529<li>Option &#8216;R&#8217; or &#8216;U&#8217; may be selected if latency is more important than completeness for your application. Note that the latency reduction is likely to be in the order of 0.5 sec or less. Note further that options &#8216;R&#8217; (RTSP/RTP mode) and &#8216;U&#8217; (UDP mode) are not accepted by proxy servers and a mobile Internet Service Provider may not support it.</li>
     4530</ul>
     4531<p>Select option &#8216;1&#8217; if you are not sure whether the broadcaster supports Ntrip Version 2.</p>
     4532</div>
     4533<div class="section" id="map-optional">
     4534<h5>Map - optional<a class="headerlink" href="#map-optional" title="Permalink to this headline">¶</a></h5>
     4535<p>Button &#8216;Map&#8217; opens a window to show a distribution map of the caster&#8217;s streams <a class="reference internal" href="#fig-40"><span class="std std-numref">(Fig. 42)</span></a>. You may like to zoom in or out using the mouse. Left button: draw a rectangle to zoom, right button: zoom out, middle button: zoom back.</p>
     4536<div class="figure" id="id69">
     4537<span id="fig-40"></span><a class="reference internal image-reference" href="_images/fig_40.png"><img alt="_images/fig_40.png" src="_images/fig_40.png" style="width: 808.0px; height: 737.0px;" /></a>
     4538<p class="caption"><span class="caption-number">Fig. 42 </span><span class="caption-text">Stream distribution map shown by BNC as derived from Ntrip Broadcaster source-table</span></p>
     4539</div>
     4540</div>
     4541</div>
     4542<div class="section" id="add-stream-coming-from-tcp-ip-port">
     4543<h4>Add Stream - Coming from TCP/IP Port<a class="headerlink" href="#add-stream-coming-from-tcp-ip-port" title="Permalink to this headline">¶</a></h4>
     4544<p>Button &#8216;Add Stream&#8217; &gt; &#8216;Coming from TCP/IP Port&#8217; allows to retrieve streams via TCP directly from an IP address without using the Ntrip transport protocol. For that you:</p>
     4545<ul class="simple">
    44514546<li>Enter the IP address of the stream providing host.</li>
    44524547<li>Enter the IP port number of the stream providing host.</li>
    44534548<li>Specify a mountpoint. Recommended is a 4-character station ID. Example: FFMJ</li>
    4454 <li>Specify the stream format. Available options are 'RTCM_2', 'RTCM_3', 'RTNET', and 'ZERO'.</li>
     4549<li>Specify the stream format. Available options are &#8216;RTCM_2&#8217;, &#8216;RTCM_3&#8217;, &#8216;RTNET&#8217;, and &#8216;ZERO&#8217;.</li>
    44554550<li>Enter the approximate latitude of the stream providing rover in degrees. Example: 45.32.</li>
    44564551<li>Enter the approximate longitude of the stream providing rover in degrees. Example: -15.20.</li>
    44574552</ul>
    4458 </p>
    4459 <p>
    4460 Streams directly received from a TCP/IP port show up with an 'N' for 'No Ntrip' in the 'Streams' canvas on BNC's main window. Latitude and longitude are to be entered just for informal reasons.
    4461 <p>
    4462 </p>
    4463 Note that this option works only if no proxy server is involved in the communication link.
    4464 </p>
    4465 
    4466 <p><h4>2.19.1.3 <a name="streamudp">Add Stream - Coming from UDP Port</h4></p>
    4467 <p>
    4468 Button 'Add Stream' &gt; 'Coming from UDP Port' allows to pick up streams arriving directly at one of the local host's UDP ports without using the Ntrip transport protocol. For that you:
    4469 <ul>
     4553<p>Streams directly received from a TCP/IP port show up with an &#8216;N&#8217; for &#8216;No Ntrip&#8217; in the &#8216;Streams&#8217; canvas on BNC&#8217;s main window. Latitude and longitude are to be entered just for informal reasons. Note that this option works only if no proxy server is involved in the communication link.</p>
     4554</div>
     4555<div class="section" id="add-stream-coming-from-udp-port">
     4556<h4>Add Stream - Coming from UDP Port<a class="headerlink" href="#add-stream-coming-from-udp-port" title="Permalink to this headline">¶</a></h4>
     4557<p>Button &#8216;Add Stream&#8217; &gt; &#8216;Coming from UDP Port&#8217; allows to pick up streams arriving directly at one of the local host&#8217;s UDP ports without using the Ntrip transport protocol. For that you:</p>
     4558<ul class="simple">
    44704559<li>Enter the local port number where the UDP stream arrives.</li>
    44714560<li>Specify a mountpoint. Recommended is a 4-character station ID. Example: FFMJ</li>
    4472 <li>Specify the stream format. Available options are 'RTCM_2', 'RTCM_3', 'RTNET', and 'ZERO'.</li>
     4561<li>Specify the stream format. Available options are &#8216;RTCM_2&#8217;, &#8216;RTCM_3&#8217;, &#8216;RTNET&#8217;, and &#8216;ZERO&#8217;.</li>
    44734562<li>Enter the approximate latitude of the stream providing rover in degrees. Example: 45.32.</li>
    44744563<li>Enter the approximate longitude of the stream providing rover in degrees. Example: -15.20.</li>
    44754564</ul>
    4476 </p>
    4477 <p>
    4478 Streams directly received at a UDP port show up with a 'UN' for 'UDP, No Ntrip' in the 'Streams' canvas section on BNC's main window. Latitude and longitude are to be entered just for informal reasons.
    4479 <p>
    4480 
    4481 <p><h4>2.19.1.4 <a name="streamser">Add Stream - Coming from Serial Port</h4></p>
    4482 <p>
    4483 Button 'Add Stream' &gt; 'Coming from Serial Port' allows to retrieve streams from a GNSS receiver via serial port without using the Ntrip transport protocol. For that you:
    4484 <ul>
     4565<p>Streams directly received at a UDP port show up with a &#8216;UN&#8217; for &#8216;UDP, No Ntrip&#8217; in the &#8216;Streams&#8217; canvas section on BNC&#8217;s main window. Latitude and longitude are to be entered just for informal reasons.</p>
     4566</div>
     4567<div class="section" id="add-stream-coming-from-serial-port">
     4568<h4>Add Stream - Coming from Serial Port<a class="headerlink" href="#add-stream-coming-from-serial-port" title="Permalink to this headline">¶</a></h4>
     4569<p>Button &#8216;Add Stream&#8217; &gt; &#8216;Coming from Serial Port&#8217; allows to retrieve streams from a GNSS receiver via serial port without using the Ntrip transport protocol. For that you:</p>
     4570<ul class="simple">
    44854571<li>Specify a mountpoint. Recommended is a 4-character station ID. Example: FFMJ</li>
    4486 <li>Specify the stream format. Available options are 'RTCM_2', 'RTCM_3', 'RTNET', and 'ZERO'.</li>
     4572<li>Specify the stream format. Available options are &#8216;RTCM_2&#8217;, &#8216;RTCM_3&#8217;, &#8216;RTNET&#8217;, and &#8216;ZERO&#8217;.</li>
    44874573<li>Enter the approximate latitude of the stream providing receiver in degrees. Example: 45.32.</li>
    44884574<li>Enter the approximate longitude of the stream providing receiver in degrees. Example: -15.20.</li>
    4489 <li>Enter the serial 'Port name' selected on your host for communication with the receiver. Valid port names are
    4490 <pre>
    4491 Windows:       COM1, COM2
    4492 Linux:         /dev/ttyS0, /dev/ttyS1
    4493 FreeBSD:       /dev/ttyd0, /dev/ttyd1
    4494 Digital Unix:  /dev/tty01, /dev/tty02
    4495 HP-UX:         /dev/tty1p0, /dev/tty2p0
    4496 SGI/IRIX:      /dev/ttyf1, /dev/ttyf2
    4497 SunOS/Solaris: /dev/ttya, /dev/ttyb
    4498 </pre>
    4499 </li>
    4500 <li>Select a 'Baud rate' for the serial input. Note that using a high baud rate is recommended.</li>
    4501 <li>Select the number of 'Data bits' for the serial input. Note that often '8' data bits are used.</li>
    4502 <li>Select the 'Parity' for the serial input. Note that parity is often set to 'NONE'.</li>
    4503 <li>Select the number of 'Stop bits' for the serial input. Note that often '1' stop bit is used.</li>
    4504 <li>Select a 'Flow control' for the serial link. Select 'OFF' if you do not know better.</li>
    4505 </ul>
    4506 </p>
    4507 <p>
    4508 When selecting one of the serial communication options listed above, make sure that you pick those configured to the serially connected GNSS receiver.
    4509 </p>
     4575<li>Enter the serial &#8216;Port name&#8217; selected on your host for communication with the receiver. Valid port names are listed in <a class="reference internal" href="#tab-serial-port-names"><span class="std std-numref">Table 14</span></a>.</li>
     4576<li>Select a &#8216;Baud rate&#8217; for the serial input. Note that using a high baud rate is recommended.</li>
     4577<li>Select the number of &#8216;Data bits&#8217; for the serial input. Note that often &#8216;8&#8217; data bits are used.</li>
     4578<li>Select the &#8216;Parity&#8217; for the serial input. Note that parity is often set to &#8216;NONE&#8217;.</li>
     4579<li>Select the number of &#8216;Stop bits&#8217; for the serial input. Note that often &#8216;1&#8217; stop bit is used.</li>
     4580<li>Select a &#8216;Flow control&#8217; for the serial link. Select &#8216;OFF&#8217; if you do not know better.</li>
     4581</ul>
     4582<p>When selecting one of the serial communication options listed above, make sure that you pick those configured to the serially connected GNSS receiver. Streams received from a serially connected GNSS receiver show up with an &#8216;S&#8217; (for Serial Port, no Ntrip) in the &#8216;Streams&#8217; canvas section on BNC&#8217;s main window. Latitude and longitude are to be entered just for informal reasons.</p>
     4583<table border="1" class="docutils" id="id70">
     4584<span id="tab-serial-port-names"></span><caption><span class="caption-number">Table 14 </span><span class="caption-text">Valid port names in BNC.</span><a class="headerlink" href="#id70" title="Permalink to this table">¶</a></caption>
     4585<colgroup>
     4586<col width="37%" />
     4587<col width="63%" />
     4588</colgroup>
     4589<thead valign="bottom">
     4590<tr class="row-odd"><th class="head"><strong>OS</strong></th>
     4591<th class="head"><strong>Valid port names</strong></th>
     4592</tr>
     4593</thead>
     4594<tbody valign="top">
     4595<tr class="row-even"><td>Windows</td>
     4596<td>COM1, COM2</td>
     4597</tr>
     4598<tr class="row-odd"><td>Linux</td>
     4599<td>/dev/ttyS0, /dev/ttyS1</td>
     4600</tr>
     4601<tr class="row-even"><td>FreeBSD</td>
     4602<td>/dev/ttyd0, /dev/ttyd1</td>
     4603</tr>
     4604<tr class="row-odd"><td>Digital Unix</td>
     4605<td>/dev/tty01, /dev/tty02</td>
     4606</tr>
     4607<tr class="row-even"><td>HP-UX</td>
     4608<td>/dev/tty1p0, /dev/tty2p0</td>
     4609</tr>
     4610<tr class="row-odd"><td>SGI/IRIX</td>
     4611<td>/dev/ttyf1, /dev/ttyf2</td>
     4612</tr>
     4613<tr class="row-even"><td>SunOS/Solaris</td>
     4614<td>/dev/ttya, /dev/ttyb</td>
     4615</tr>
     4616</tbody>
     4617</table>
     4618<p><a class="reference internal" href="#fig-41"><span class="std std-numref">Fig. 43</span></a> shows a BNC example setup for pulling a stream via serial port on a Windows operating system.</p>
     4619<div class="figure" id="id71">
     4620<span id="fig-41"></span><a class="reference internal image-reference" href="_images/fig_41.png"><img alt="_images/fig_41.png" src="_images/fig_41.png" style="width: 408.0px; height: 209.0px;" /></a>
     4621<p class="caption"><span class="caption-number">Fig. 43 </span><span class="caption-text">BNC configuration for pulling a stream via serial port</span></p>
     4622</div>
     4623</div>
     4624<div class="section" id="map">
     4625<h4>Map<a class="headerlink" href="#map" title="Permalink to this headline">¶</a></h4>
     4626<p>Button &#8216;Map&#8217; opens a window to show a distribution map of the streams selected for retrieval as listed under the &#8216;Streams&#8217; canvas. You may like to zoom in or out using the mouse. Left button: draw a rectangle to zoom, right button: zoom out, middle button: zoom back.</p>
     4627</div>
     4628<div class="section" id="start-stop">
     4629<h4>Start/Stop<a class="headerlink" href="#start-stop" title="Permalink to this headline">¶</a></h4>
     4630<p>Hit &#8216;Start&#8217; to start retrieving, decoding or converting GNSS data streams in real-time. Note that &#8216;Start&#8217; generally forces BNC to begin with fresh RINEX files which might overwrite existing files when necessary unless option &#8216;Append files&#8217; is ticked.</p>
     4631<p>Hit the &#8216;Stop&#8217; button in order to stop BNC.</p>
     4632</div>
     4633<div class="section" id="help-shift-f1">
     4634<h4>Help? = Shift+F1<a class="headerlink" href="#help-shift-f1" title="Permalink to this headline">¶</a></h4>
     4635<p>BNC comes with a &#8216;What&#8217;s This&#8217; help system providing information about its functionality and usage. Short descriptions are available for any widget and program option. Focus to the relevant object and press Shift+F1 to request help information. A help text appears immediately; it disappears as soon as the user does something else. The dialogs on some operating systems may provide a &#8216;?&#8217; button that users can click; click the relevant widget to pop up the help text.</p>
     4636</div>
     4637</div>
     4638<div class="section" id="command-line-options">
     4639<span id="index-46"></span><h3>Command Line Options<a class="headerlink" href="#command-line-options" title="Permalink to this headline">¶</a></h3>
     4640<p>Command line options are available to run BNC in &#8216;no window&#8217; mode or let it read previously recorded input offline from one or several files for debugging or post processing purposes. It is also possible to introduce a specific configuration filename instead of using the default filename &#8216;BNC.bnc&#8217;. The self-explaining content of the configuration file can easily be edited. In addition to reading processing options from the involved configuration file, BNC can optionally read any configuration option from command line. Running BNC with command line option &#8216;help&#8217;</p>
     4641<div class="highlight-console"><div class="highlight"><pre><span class="go">bnc --help (MS Windows: bnc.exe --help | more)</span>
     4642</pre></div>
     4643</div>
     4644<p>provides a list of all available command line options.</p>
     4645<div class="section" id="id21">
     4646<h4>Version - optional<a class="headerlink" href="#id21" title="Permalink to this headline">¶</a></h4>
     4647<p>Command line option <code class="docutils literal"><span class="pre">--version</span></code> lets BNC print its version number.</p>
     4648<div class="highlight-console"><div class="highlight"><pre><span class="go">bnc --version (MS Windows: bnc.exe --version | more)</span>
     4649</pre></div>
     4650</div>
     4651</div>
     4652<div class="section" id="display-optional">
     4653<h4>Display - optional<a class="headerlink" href="#display-optional" title="Permalink to this headline">¶</a></h4>
     4654<p>On systems which support graphics, command line option <code class="docutils literal"><span class="pre">--display</span></code> forces BNC to present the BNC window on the specified display.</p>
     4655<div class="highlight-console"><div class="highlight"><pre><span class="go">bnc.exe --display localhost:10.0</span>
     4656</pre></div>
     4657</div>
     4658</div>
     4659<div class="section" id="no-window-mode-optional">
     4660<h4>No Window Mode - optional<a class="headerlink" href="#no-window-mode-optional" title="Permalink to this headline">¶</a></h4>
     4661<p>Apart from its regular windows mode, BNC can be started on all systems as a batch job with command line option &#8216;-nw&#8217;. BNC will then run in &#8216;no window&#8217; mode, using processing options from its configuration file on disk. Terminate BNC using Windows Task Manager when running it in &#8216;no window&#8217; mode on Windows systems.</p>
     4662<div class="highlight-console"><div class="highlight"><pre><span class="go">bnc.exe --nw</span>
     4663</pre></div>
     4664</div>
     4665<p>It is obvious that BNC requires graphics support when started in interactive mode. However, note that graphics support is also required when producing plots in batch mode (option <code class="docutils literal"><span class="pre">-nw</span></code>). Windows and Mac OS X systems always support graphics. For producing plots in batch mode on Linux systems you must make sure that at least a virtual X-Server such as &#8216;Xvfb&#8217; is installed and the <code class="docutils literal"><span class="pre">-display</span></code> option is used. The following is an example shell script to execute BNC in batch mode for producing QC plots from RINEX files. It could be used via <code class="docutils literal"><span class="pre">crontab</span></code>:</p>
     4666<div class="highlight-none"><div class="highlight"><pre>#!/bin/bash
     4667# Save string localhost
     4668echo &quot;localhost&quot; &gt; /home/user/hosts
    45104669
    4511 <p>
    4512 Streams received from a serially connected GNSS receiver show up with an 'S' (for <u>S</u>erial Port, no Ntrip) in the 'Streams' canvas section on BNC's main window. Latitude and longitude are to be entered just for informal reasons.
    4513 <p>
     4670# Start virtual X-Server, save process ID
     4671/usr/bin/Xvfb :29 -auth /home/user/hosts -screen 0 1280x1024x8 &amp;
     4672psID=`echo $!`
    45144673
    4515 <p>
    4516 The following figure shows a BNC example setup for pulling a stream via serial port on a Windows operating system.
    4517 </p>
    4518 <p><img src="IMG/screenshot15.png"/></p>
    4519 <p><u>Figure 41:</u> BNC configuration for pulling a stream via serial port</p>
     4674# Run BNC application with defined display variable
     4675/home/user/BNC/bnc --conf /dev/null --key reqcAction Analyze --key reqcObsFile ons12090.12o --key reqcNavFile brdc2090.12p --key reqcOutLogFile multi.txt --key reqcPlotDir /home/user --display localhost:29 --nw
    45204676
    4521 <p><h4>2.19.2 <a name="streamsdelete">Delete Stream</h4></p>
    4522 <p>
    4523 Button 'Delete Stream' allows you to delete streams previously selected for retrieval as listed under the 'Streams' canvas on BNC's main window.
    4524 </p>
    4525 
    4526 <p><h4>2.19.3 <a name="streamsmap">Map</h4></p>
    4527 <p>
    4528 Button 'Map' opens a window to show a distribution map of the streams selected for retrieval as listed under the 'Streams' canvas. You may like to zoom in or out using the mouse. Left button: draw a rectangle to zoom, right button: zoom out, middle button: zoom back.
    4529 </p>
    4530 
    4531 <p><h4>2.19.4 <a name="start">Start</h4></p>
    4532 <p>
    4533 Hit 'Start' to start retrieving, decoding or converting GNSS data streams in real-time. Note that 'Start' generally forces BNC to begin with fresh RINEX files which might overwrite existing files when necessary unless option 'Append files' is ticked.
    4534 </p>
    4535 
    4536 <p><h4>2.19.5 <a name="stop">Stop</h4></p>
    4537 <p>
    4538 Hit the 'Stop' button in order to stop BNC.
    4539 </p>
    4540 
    4541 <p><h4>2.19.6 <a name="contexthelp">Help? = Shift+F1</h4></p>
    4542 <p>
    4543 BNC comes with a <i>What's This</i> help system providing information about its functionality and usage. Short descriptions are available for any widget and program option. Focus to the relevant object and press Shift+F1 to request help information. A help text appears immediately; it disappears as soon as the user does something else. The dialogs on some operating systems may provide a '?' button that users can click; click the relevant widget to pop up the help text.
    4544 </p>
    4545 
    4546 <p><h4>2.20 <a name="cmd">Command Line Options</h4></p>
    4547 <p>
    4548 Command line options are available to run BNC in 'no window' mode or let it read previously recorded input offline from one or several files for debugging or post processing purposes. It is also possible to introduce a specific configuration filename instead of using the default filename 'BNC.bnc'. The self-explaining content of the configuration file can easily be edited.
    4549 </p>
    4550 <p>
    4551 In addition to reading processing options from the involved configuration file, BNC can optionally read any configuration option from command line. Running BNC with command line option 'help'
    4552 </p>
    4553 <p>
    4554 Example:<br><br>
    4555 &nbsp; &nbsp; &nbsp; bnc --help (MS Windows: bnc.exe --help | more)
    4556 </p>
    4557 <p>
    4558 provides a list of all available command line options.
    4559 </p>
    4560 
    4561 <p><h4>2.20.1 <a name="cmdVersion">Version - optional</h4></p>
    4562 <p>
    4563 Command line option '--version' lets BNC print its version number.
    4564 </p>
    4565 <p>
    4566 Example:<br><br>
    4567 &nbsp; &nbsp; &nbsp; bnc --version (MS Windows: bnc.exe --version | more)
    4568 </p>
    4569 
    4570 <p><h4>2.20.2 <a name="cmdDisplay">Display - optional</h4></p>
    4571 <p>
    4572 On systems which support graphics, command line option '--display' forces BNC to present the BNC window on the specified display.
    4573 </p>
    4574 <p>
    4575 Example:<br><br>
    4576 &nbsp; &nbsp; &nbsp; bnc.exe --display localhost:10.0
    4577 </p>
    4578 
    4579 <p><h4>2.20.3 <a name="nw">No Window Mode - optional</h4></p>
    4580 <p>
    4581 Apart from its regular windows mode, BNC can be started on all systems as a batch job with command line option '-nw'. BNC will then run in 'no window' mode, using processing options from its configuration file on disk. Terminate BNC using Windows Task Manager when running it in 'no window' mode on Windows systems.
    4582 </p>
    4583 <p>
    4584 Example:<br><br>
    4585 &nbsp; &nbsp; &nbsp; bnc.exe --nw
    4586 </p>
    4587 <p>
    4588 It is obvious that BNC requires graphics support when started in interactive
    4589 mode. However, note that graphics support is also required when producing plots in
    4590 batch mode (option -nw). Windows and Mac OS X systems always support graphics. For
    4591 producing plots in batch mode on Linux systems you must make sure that at
    4592 least a virtual X-Server such as 'Xvfb' is installed and the '-display' option
    4593 is used. The following is an example shell script to execute BNC in batch mode
    4594 for producing QC plots from RINEX files. It could be used via 'crontab':
    4595 </p>
    4596 <pre>
    4597    #!/bin/bash
    4598 
    4599    # Save string localhost
    4600    echo "localhost" > /home/user/hosts
    4601 
    4602    # Start virtual X-Server, save process ID
    4603    /usr/bin/Xvfb :29 -auth /home/user/hosts -screen 0 1280x1024x8 &
    4604    psID=`echo $!`
    4605 
    4606    # Run BNC application with defined display variable
    4607    /home/user/BNC/bnc --conf /dev/null --key reqcAction Analyze --key reqcObsFile ons12090.12o --key reqcNavFile brdc2090.12p --key reqcOutLogFile multi.txt --key reqcPlotDir /home/user --display localhost:29 --nw
    4608 
    4609    # BNC done, kill X-server process
    4610    kill $psID
    4611 </pre>
    4612 
    4613 <p><h4>2.20.4 <a name="post">File Mode - optional</h4></p>
    4614 <p>
    4615 Although BNC is primarily a real-time online tool, for debugging purposes it can be run offline to read data from a file previously saved through option 'Raw output file' (Record &amp; Replay functionality). Enter the following command line option for that
    4616 </p>
    4617 <p>
    4618 &nbsp; &nbsp; &nbsp; --file &lt;<u>inputFileName</u>&gt;
    4619 </p>
    4620 
    4621 and specify the full path to an input file containing previously saved data. Example:<br><br>
    4622 &nbsp; &nbsp; &nbsp; ./bnc --file /home/user/raw.output_110301
    4623 </p>
    4624 <p>
    4625 Note that when running BNC offline, it will use options for file saving, interval, sampling, PPP etc. from its configuration file.
    4626 </p>
    4627 <p>Note further that option '--file' forces BNC to apply the '-nw' option for running in 'no window' mode.
    4628 </p>
    4629 
    4630 <p><h4>2.20.5 <a name="conffile">Configuration File - optional</h4></p>
    4631 The default configuration filename is 'BNC.bnc'. You may change this name at startup time using command line option '--conf &lt;<u>confFileName</u>&gt;'. This allows running several BNC jobs in parallel on the same host using different sets of configuration options. <u>confFileName</u> stands either for the full path to a configuration file or just for a filename. If you introduce only a filename, the corresponding file will be saved in the current working directory from where BNC is started.
    4632 </p>
    4633 <p>
    4634 Example:<br><br>
    4635 &nbsp; &nbsp; &nbsp; ./bnc --conf MyConfig.bnc
    4636 </p>
    4637 <p>
    4638 This leads to a BNC job using configuration file 'MyConfig.bnc'. The configuration file will be saved in the current working directory.
    4639 </p>
    4640 
    4641 <p><h4>2.20.6 <a name="confopt">Configuration Options - optional</h4></p>
    4642 <p>
    4643 BNC applies options from the configuration file but allows updating every one of them on the command line while the content of the configuration file remains unchanged. Note the following syntax for Command Line Interface (CLI) options:
    4644 </p>
    4645 <p>
    4646 &nbsp; &nbsp; &nbsp; --key &lt;keyName&gt; &lt;keyValue&gt;
    4647 </p>
    4648 <p>
    4649 Parameter &lt;keyName&gt; stands for the key name of an option contained in the configuration file and &lt;keyValue&gt; stands for the value you want to assign to it. The following is a syntax example for a complete command line:
    4650 </p>
    4651 <p>
    4652 &nbsp; &nbsp; &nbsp; bnc --nw --conf &lt;confFileName&gt --key &lt;keyName1&gt; &lt;keyValue1&gt; --key &lt;keyName2&gt; &lt;keyValue2&gt; ...
    4653 </p>
    4654 <p>
    4655 Configuration options which are part of the configuration files PPP section must be prefixed by 'PPP/'. As an example, option 'minObs' from the PPP section of the BNC configuration file would be specified as 'PPP/minObs' on a command line.
    4656 </p>
    4657 <p>
    4658 Values for configuration options can be introduced via command line exactly as they show up in the configuration file. However, any value containing one or more blank characters must be enclosed by quotation marks when specified on command line.
    4659 </p>
    4660 
    4661 <p><h3>3. <a name="annex">Annex</h3></p>
    4662 
    4663 <p><h4>3.1 <a name=history>Revision History</h3></p>
    4664 <table>
    4665 <tr></tr>
    4666 
    4667 <tr>
    4668 <td>Dec 2006 &nbsp;</td><td>Version 1.0b &nbsp;</td>
    4669 <td>[Add] First Beta Binaries published based on Qt 4.2.3.</td>
    4670 </tr>
    4671 
    4672 <tr>
    4673 <td>Jan 2007 &nbsp;</td><td>Version 1.1b &nbsp;</td>
    4674 <td>[Add] Observables C2, S1, and S2<br>[Add] Virtual reference station access<br>[Bug] RTCM2 decoder time tag fixed<br>[Mod] Small letters for public RINEX skeleton files<br>[Add] Online help through Shift+F1</td>
    4675 </tr>
    4676 
    4677 <tr>
    4678 <td>Apr 2007 &nbsp;</td><td>Version 1.2b &nbsp;</td>
    4679 <td>[Bug] Output only through IP port<br>[Bug] Method 'reconnecting' now thread-save<br> [Add] ZERO decoder added<br> [Mod] Download public RINEX skeletons once per day<br> [Mod] Upgrade to Qt Version 4.2.3<br> [Mod] Replace 'system' call for RINEX script by 'QProcess'<br> [Add] HTTP Host directive for skeleton file download<br> [Add] Percent encoding for user IDs and passwords<br> [Bug] Exit execution of calling thread for RTCM3 streams<br> [Bug] Signal-slot mechanism for threads</td>
    4680 </tr>
    4681 
    4682 <tr>
    4683 <td>May 2007 &nbsp;</td><td>Version 1.3 &nbsp;</td>
    4684 <td>[Add] Source code published.</td>
    4685 </tr>
    4686 
    4687 <tr>
    4688 <td>Jul 2007 &nbsp;</td><td>Version 1.4 &nbsp;</td>
    4689 <td>[Bug] Skip messages from proxy server<br> [Bug] Call RINEX script through 'nohup'</td>
    4690 </tr>
    4691 
    4692 <tr>
    4693 <td>Apr 2008 &nbsp;</td><td>Version 1.5 &nbsp;</td>
    4694 <td>[Add] Handle ephemeris from RTCM Version 3 streams<br> [Add] Upgrade to Qt Version 4.3.2<br> [Add] Optional RINEX v3 output<br> [Add] SBAS support<br> [Bug] RINEX skeleton download following stream outage<br> [Add] Handle ephemeris from RTIGS streams<br> [Add] Monitor stream failure/recovery and latency<br> [Mod] Redesign of main window<br> [Bug] Freezing of About window on Mac OS X<br> [Bug] Fixed problem with PRN 32 in RTCM v2 decoder<br> [Bug] Fix for Trimble 4000SSI receivers in RTCM v2 decoder<br> [Mod] Major revision of input buffer in RTCM v2 decoder</td>
    4695 </tr>
    4696 
    4697 <tr>
    4698 <td>Dec 2008 &nbsp;</td><td>Version 1.6 &nbsp;</td>
    4699 <td>[Mod] Fill blank columns in RINEX v3 with 0.000<br> [Add] RTCM v3 decoder for orbit and clock corrections<br>[Add] Check RTCM v3 streams for incoming message types<br> [Add] Decode RTCM v2 message types 3, 20, 21, and 22<br> [Add] Loss of lock and lock time indicator<br> [Bug] Rounding error in RTCM v3 decoder concerning GLONASS height<br> [Mod] Accept GLONASS in RTCM v3 when transmitted first<br> [Add] Leap second 1 January 2009<br> [Add] Offline mode, read data from file<br> [Add] Output antenna descriptor, coordinates and eccentricities from RTCM v3<br> [Add] Reconfiguration on-the-fly<br> [Mod] Binary output of synchronized observations<br> [Add] Binary output of unsynchronized observations<br> [Bug] Fixed problem with joined RTCM v3 blocks</td>
    4700 </tr>
    4701 
    4702 <tr>
    4703 <td>Dec 2008 &nbsp;</td><td>Version 1.6.1 &nbsp;</td>
    4704 <td>[Mod] HTTP GET when no proxy in front</td>
    4705 </tr>
    4706 
    4707 <tr>
    4708 <td>Nov 2009 &nbsp;</td><td>Version 1.7 &nbsp;</td>
    4709 <td>[Bug] RINEX Navigation file format<br> [Add] Upgrade to Qt Version 4.5.2<br> [Add] Support of Ntrip v2<br> [Add] Rover support via serial port<br> [Add] Show broadcaster table from www.rtcm-ntrip.org<br> [Add] Enable/disable panel widgets<br> [Add] User defined configuration filename<br> [Mod] Switch to configuration files in ini-Format<br> [Add] Daily logfile rotation<br> [Add] Read from TCP/IP port, by-pass Ntrip transport protocol<br> [Add] Save NMEA sentences coming from rover<br> [Add] Auto start<br> [Add] Drag and drop ini files<br> [Add] Read from serial port, by-pass Ntrip transport protocol<br> [Mod] Update of SSR messages following RTCM 091-2009-SC104-542<br> [Add] Read from UPD port, by-pass Ntrip transport protocol<br> [Mod] Output format of Broadcast Corrections<br> [Add] Throughput plot<br> [Add] Latency plot</td>
    4710 </tr>
    4711 
    4712 <tr>
    4713 <td>Nov 2009 &nbsp;</td><td>Version 1.8 &nbsp;</td>
    4714 <td>[Mod] On-the-fly reconfiguration of latency and throughput plots</td>
    4715 </tr>
    4716 
    4717 <tr>
    4718 <td>Feb 2010 &nbsp;</td><td>Version 2.0 &nbsp;</td>
    4719 <td>[Mod] Change sign of Broadcast Corrections<br> [Add] Real-time PPP option</td>
    4720 </tr>
    4721 
    4722 <tr>
    4723 <td>Jun 2010 &nbsp;</td><td>Version 2.1 &nbsp;</td>
    4724 <td>[Bug] SSR GLONASS message generation<br> [Add] PPP in post processing mode<br> [Mod] Update of SSR messages following draft dated 2010-04-12<br> [Mod] Generating error message when observation epoch is wrong</td>
    4725 </tr>
    4726 
    4727 <tr>
    4728 <td>Jul 2010 &nbsp;</td><td>Version 2.2 &nbsp;</td>
    4729 <td>[Bug] GLONASS ephemeris time</td>
    4730 </tr>
    4731 
    4732 <tr>
    4733 <td>Aug 2010 &nbsp;</td><td>Version 2.3 &nbsp;</td>
    4734 <td>[Mod] Internal format for saving raw streams<br> [Bug] Outlier detection in GLONASS ambiguity resolution<br> [Mod] Format of PPP logs in logfile<br> [Bug] Complete acceleration terms for GLONASS ephemeris<br> [Bug] Handling ephemeris IOD's in PPP mode</td>
    4735 </tr>
    4736 
    4737 <tr>
    4738 <td>Dec 2010 &nbsp;</td><td>Version 2.4 &nbsp;</td>
    4739 <td>[Add] Output of averaged positions when in PPP mode<br> [Mod] Use always the latest received set of Broadcast Ephemeris<br> [Add] QuickStart PPP option<br> [Mod] Improvement of data sharing efficiency among different threads<br> [Mod] Design of PPP panel section<br> [Add] Sigmas for observations and parameters<br> [Add] Stream distribution map<br> [Bug] GPS Ephemeris in RINEX v3 format</td>
    4740 </tr>
    4741 
    4742 <tr>
    4743 <td>Feb 2011 &nbsp;</td><td>Version 2.5 &nbsp;</td>
    4744 <td>[Add] PPP option for sync of clock observations and corrections<br> [Add] Drafted RTCM v3 Galileo ephemeris messages 1045<br> [Add] Drafted RTCM v3 Multiple Signal Messages<br> [Add] Optional specification of sigmas for coordinates and troposphere in PPP<br> [Add] Include Galileo in SPP<br> [Add] Include Galileo observations in output via IP port<br> [Add] Include Galileo observations in output via RINEX v3 files<br> [Mod] Interface format for feeding a real-time engine with observations<br> [Add] Correct observations for Antenna Phase Center offsets<br> [Add] Combine orbit/clock correction streams<br> [Add] Specify corrections mountpoint in PPP panel</td>
    4745 </tr>
    4746 
    4747 <tr>
    4748 <td>Apr 2011 &nbsp;</td><td>Version 2.6 &nbsp;</td>
    4749 <td>[Add] Complete integration of BNS in BNC<br> [Add] SP3 and Clock RINEX output<br> [Add] PPP in post processing Mode<br> [Add] Some RINEX editing & QC functionality<br> [Add] Threshold for orbit outliers in combination solution<br> [Add] Real-time engine becomes orbit/clock server instead of client<br> [Mod] 'EOE' added to orbit/clock stream from engine<br> [Add] Correction for antenna eccentricities<br> [Add] Quick start mode for PPP<br> [Mod] Design of format for feeding engine changed to follow RINEX v3<br> [Mod] Implementation of SSR message encoding modified according to standard<br> [Add] SSL/TLS Support of Ntrip Version 2<br> [Mod] Switch to Qt version 4.7.3<br> [Add] RINEX editing, concatenation and quality check<br> [Add] Reading all configuration options from command line<br> [Mod] RTCM v3 Galileo Broadcast Ephemeris message 1045<br> [Mod] Change default configuration file suffix from 'ini' to 'bnc'<br> [Add] Specific rates for orbits and clocks in streams and SP3/RNX files</td>
    4750 </tr>
    4751 
    4752 <tr>
    4753 <td>May 2012 &nbsp;</td><td>Version 2.6 &nbsp;</td>
    4754 <td>[Add] Version 2.6 published</td>
    4755 </tr>
    4756 
    4757 <tr>
    4758 <td>Sep 2012 &nbsp;</td><td>Version 2.7 &nbsp;</td>
    4759 <td>[Bug] Bug in L5 decoding fixed<br> [Bug] Bug in on-the-fly configuration fixed<br> [Add] Clock RINEX file header extended<br> [Add] Decoding/converting BeiDou and QZSS added<br> [Add] Work on RINEX v2 and v3 quality check started<br> [Mod] Source code completely re-arranged<br> [Add] QWT and QWTPOLAR graphics libraries added<br> [Add] RINEX QC through multipath analysis sky plot<br> [Add] RINEX QC through signal-to-noise ratio sky plot<br> [Add] RINEX QC through satellite availability plot<br> [Add] RINEX QC through satellite elevation plot<br> [Add RINEX QC through PDOP plot<br> [Bug] Short periodic outages in PPP time series when 'Sync Corr' set to zero<br> |Add] Log observation types contained in RTCM Version 3 MSM streams<br> [Add] Reading RINEX v3 observation type header records from RINEX skeleton files<br> [Add] Logfile for RINEX file editing and concatenation<br>[Add] Save PNG plot files on disk<br> [Mod] Plot stream distribution map from Ntrip Broadcaster source-table<br> [Add] Plot stream distribution map from selected sources<br> [Add] Version 2.7 published</td>
    4760 </tr>
    4761 
    4762 <tr>
    4763 <td>Mar 2013 &nbsp;</td><td>Version 2.8 &nbsp;</td>
    4764 <td>[Mod] Started work on new version in Sep 2012<br> [Bug] Epoch special event flag in RINEX concatenation<br> [Bug] Limit RINEX v2 records length to 80 characters<br> [Bug] SSR message update interval indicator<br> [Bug] Fixed SSR stream encoding and upload<br> [Add] Concatenate RINEX v3 navigation files containing Galileo ephemeris<br> [Mod] Plausibility check of GLONASS ephemeris<br> [Add] Correcting clocks for scale factor involved in transformation<br> [Mod] Orbit/clock interpolation in SSR stream encoding and upload to caster<br> [Add] Version 2.8 published</td>
    4765 </tr>
    4766 
    4767 <tr>
    4768 <td>Jul 2013 &nbsp;</td><td>Version 2.9 &nbsp;</td>
    4769 <td>[Add] Started work on new version in Mar 2013<br>[Bug] SSR stream upload buffering disabled<br>[Mod] Format for feeding a connected GNSS engine<br>[Mod] RTNET format for receiving data from a connected GNSS engine<br>[Add] Include Galileo in SPP<br>[Add] RINEX QC multipath an SNR sky plots for GLONASS and Galileo<br>[Add] Bias estimation for GLONASS clocks in PPP<br>[Add] Trace positions on GM or OSM maps<br>[Add] Version 2.9 published</td>
    4770 </tr>
    4771 
    4772 <tr>
    4773 <td>Dec 2013 &nbsp;</td><td>Version 2.10 &nbsp;</td>
    4774 <td>[Add] Started work on new version in Aug 2013<br>[Bug] Clock RINEX und SP3 file generation on Windows systems<br>[Bug] Broadcast Ephemeris generation<br>[Add] Transformation ITRF2008 to NAD83 and DREF91<br>[Add] CodeBias added to RTNET stream format<br>[Bug] GPS L2 in 'Feed Engine' output<br>[Mod] Made C1 in BeiDou default observation type instead of C2<br>[Add] Feed engine output sorted per stream<br>[Add] Feed engine output filename change on-the-fly<br>[Add] 'Append files' option for RINEX observation files<br>[Mod] Broadcast Correction ASCII file output for message 1058 &amp; 1064 modified<br>[Bug] GPS L2 phase data in RINEX2<br>[Bug] GLONASS frequency numbers<br>[Add] RTCM v3 Galileo Broadcast Ephemeris message 1046<br>[Add] Reset ambiguities in PPP when orbit/clock correction IDs change<br>[Add] Satellite clock offsets are reset in adjustment for combination when orbit/clock correction IDs change<br>[Add] Version 2.10 published</td>
    4775 </tr>
    4776 
    4777 <tr>
    4778 <td>Sep 2014 &nbsp;</td><td>Version 2.11 &nbsp;</td>
    4779 <td>[Add] Started work on new version in Dec 2013<br>[Mod] SIRGAS transformation parameters adjusted<br>[Mod] ANTEX file updated<br>[Mod] RTCM SSR messages updated<br>[Bug] GLONASS code biases<br>[Mod] Maximum number of GNSS observations increased<br>[Mod] Loss of lock handling changed<br>[Add] Raw stream output through TCP/IP port<br>[Add] Version 2.11.0 published</td>
    4780 </tr>
    4781 
    4782 <tr>
    4783 <td>Mar 2016 &nbsp;</td><td>Version 2.12 &nbsp;</td><td>
    4784 [Add] Started work on new version in Sep 2014<br>
    4785 [Mod] RINEX file concatenation<br>
    4786 [Add] Observation code selection in RINEX file editing<br>
    4787 [Mod] Routine handling of data input and output in RINEX format re-written<br>
    4788 [Mod] QC routines re-written with the goal of handling all signal types<br>
    4789 [Add] Machine-readable output of RINEX QC<br>
    4790 [Add] PPP client functionality for parallel processing of an arbitrary number of stations in separate threads<br>
    4791 [Bug] Receiver antenna PCO in ionosphere-free PPP mode<br>
    4792 [Add] NMEA output for any station processed in PPP mode<br>
    4793 [Add] PPP processing of any number of linear combinations of GNSS measurements selected by user<br>
    4794 [Add] Encoding/Decoding RTCM SSR I messages for Galileo, BDS, SBAS and QZSS<br>
    4795 [Add] Encoding/Decoding RTCM SSR phase bias messages<br>
    4796 [Add] Encoding/Decoding RTCM SSR ionospheric model messages, single-layer model for total electron content<br>
    4797 [Add] RTCM SSR I messages for Galileo, BDS, SBAS and QZSS support from RTNET interface<br>
    4798 [Add] RTCM SSR II messages (phase biases and SSR ionospheric model) support from RTNET interface<br>
    4799 [Add] Computataion of VTEC and STEC from SSR ionospheric model messages for usage in PPP mode<br>
    4800 [Add] Handle old-fashioned SNR values in RINEX<br>
    4801 [Mod] SNR and MP visualization depending on RINEX observation attribute<br>
    4802 [Bug] Saastamoinen tropospheric correction for very high elevation receivers<br>
    4803 [Add] Comparison of SP3 files<br>
    4804 [Add] Encoding/Decoding of RTCM v3 proposal for Galileo Broadcast Ephemeris message 1046<br>
    4805 [Add] Encoding/Decoding of RTCM v3 QZSS Broadcast Ephemeris message 1044<br>
    4806 [Add] Encoding/Decoding of RTCM v3 SBAS Broadcast Ephemeris message 1043<br>
    4807 [Add] Encoding/Decoding of RTCM v3 BDS Broadcast Ephemeris message 63<br>
    4808 [Add] RINEX v3 support of Galileo, BDS, SBAS and QZSS Broadcast Ephemerides<br>
    4809 [Add] Consideration of the aspect that Galileo NAV message can be providet for the same epoch but with different flags (I/NAV, F/NAV, DVS)<br>
    4810 [Bug] VRS support in sending NMEA in Auto/Manual mode to Ntrip Broadcaster<br>
    4811 [Add] Forwarding NMEA GNGGA to Ntrip Broadcaster<br>
    4812 [Bug] Stream failure/recovery reports<br>
    4813 [Add] Compute IODs for BDS and SBAS from CRC over broadcast ephemeris and clock parameters<br>
    4814 [Mod] PPP default options<br>
    4815 [Add] Example configuration for SP3 file comparison<br>
    4816 [Add] Choose between code and phase observations when in PPP SSR I mode<br>
    4817 [Bug] Reset time series plot when restarting PPP in post processing mode<br>
    4818 [Add] Broadcast ephemeris check regarding allowed age of data sets<br>
    4819 [Add] Code bias usage for PPP SSR I mode<br>
    4820 [Add] Code bias, phase bias and VTEC usage in extended PPP mode<br>
    4821 [Mod] Consideration of the full antenna PCO vector in all PPP modes<br>
    4822 [Add] Allow GPS-only and GLONASS-only RINEX v2 Navigation files<br>
    4823 [Mod] SSR clock correction converted to seconds to be consistent with broadcast values<br>
    4824 [Add] Support Galileo I/NAV broadcast ephemeris<br>
    4825 [Add] Extended RINEX v3 filenames<br>
    4826 [Add] Stream's country added to configuration string 'mountPoints'<br>
    4827 [Add] destinction of GEO/MEO satellites during BDS velocity derermination <br>
    4828 [Bug] Velocity determination for geostationary BDS satellites<br>
    4829 [Add] Set TOE from BDS week and second<br>
    4830 [Add] Use BDS observations and ephemerides in PPP SSR I mode<br>
    4831 [Add] Considering that yaw angle restricted to -180 to +180 deg<br>
    4832 [Mod] Read local RINEX skeleton files<br>
    4833 [Add] Update interval for VTEC in RTNET stream format<br>
    4834 [Bug] SBAS IODN<br>
    4835 [Bug] Galileo week number<br>
    4836 [Add] Phase shift records in RINEX v3 headers<br>
    4837 [Add] Output GLONASS slot numbers from scanning stream content<br>
    4838 [Add] Decoder interface for PPP SSR I+II messages for Galileo/QZSS/SBAS/BDS<br>
    4839 [Mod] Renaming BDS first frequency from '1' to '2'<br>
    4840 [Add] RINEX QC, receiver/antenna information editable<br>
    4841 [Add] Support of new RINEX header lines regarding phase shifts, GLONAQSS slots and GLONASS biases during file merging<br>
    4842 [Add] Switch to port 443 for skeleton file download from https website<br>
    4843 [Mod] Default observation types for RINEX v3 files<br>
    4844 [Bug] RTCM v2 decoder<br>
    4845 [Add] SINEX Troposphere file output<br>
    4846 [Add] Comments with respect to RINEX v3 to RINEX v2 observation file conversion
    4847 [Add] String for Operating System in logfile output<br>
    4848 [Add] Full integration of 'rtcm3torinex'<br>
    4849 [Add] Extended command line help<br>
    4850 [Add] Version 2.12.0 published<br>
    4851 
    4852 </td>
    4853 </tr>
    4854 
     4677# BNC done, kill X-server process
     4678kill $psID
     4679</pre></div>
     4680</div>
     4681</div>
     4682<div class="section" id="file-mode-optional">
     4683<h4>File Mode - optional<a class="headerlink" href="#file-mode-optional" title="Permalink to this headline">¶</a></h4>
     4684<p>Although BNC is primarily a real-time online tool, for debugging purposes it can be run offline to read data from a file previously saved through option &#8216;Raw output file&#8217; (Record &amp; Replay functionality). Enter the following command line option for that</p>
     4685<div class="highlight-console"><div class="highlight"><pre><span class="go">--file &lt;inputFileName&gt;</span>
     4686</pre></div>
     4687</div>
     4688<p>and specify the full path to an input file containing previously saved data, e.g.</p>
     4689<div class="highlight-console"><div class="highlight"><pre><span class="go">./bnc --file /home/user/raw.output_110301</span>
     4690</pre></div>
     4691</div>
     4692<p>Note that when running BNC offline, it will use options for file saving, interval, sampling, PPP etc. from its configuration file. Note further that option <code class="docutils literal"><span class="pre">--file</span></code> forces BNC to apply the &#8216;-nw&#8217; option for running in &#8216;no window&#8217; mode.</p>
     4693</div>
     4694<div class="section" id="configuration-file-optional">
     4695<h4>Configuration File - optional<a class="headerlink" href="#configuration-file-optional" title="Permalink to this headline">¶</a></h4>
     4696<p>The default configuration filename is <code class="docutils literal"><span class="pre">BNC.bnc</span></code>. You may change this name at startup time using command line option <code class="docutils literal"><span class="pre">--conf</span> <span class="pre">&lt;confFileName&gt;</span></code>. This allows running several BNC jobs in parallel on the same host using different sets of configuration options. &#8216;confFileName&#8217; stands either for the full path to a configuration file or just for a filename. If you introduce only a filename, the corresponding file will be saved in the current working directory from where BNC is started, e.g.</p>
     4697<div class="highlight-console"><div class="highlight"><pre><span class="go">./bnc --conf MyConfig.bnc</span>
     4698</pre></div>
     4699</div>
     4700<p>This leads to a BNC job using configuration file &#8216;MyConfig.bnc&#8217;. The configuration file will be saved in the current working directory.</p>
     4701</div>
     4702<div class="section" id="configuration-options-optional">
     4703<h4>Configuration Options - optional<a class="headerlink" href="#configuration-options-optional" title="Permalink to this headline">¶</a></h4>
     4704<p>BNC applies options from the configuration file but allows updating every one of them on the command line while the content of the configuration file remains unchanged. Note the following syntax for Command Line Interface (CLI) options:</p>
     4705<div class="highlight-console"><div class="highlight"><pre><span class="go">--key &lt;keyName&gt; &lt;keyValue&gt;</span>
     4706</pre></div>
     4707</div>
     4708<p>Parameter &lt;keyName&gt; stands for the key name of an option contained in the configuration file and &lt;keyValue&gt; stands for the value you want to assign to it. The following is a syntax example for a complete command line:</p>
     4709<div class="highlight-console"><div class="highlight"><pre><span class="go">bnc --nw --conf &lt;confFileName&gt; --key &lt;keyName1&gt; &lt;keyValue1&gt; --key &lt;keyName2&gt; &lt;keyValue2&gt; ...</span>
     4710</pre></div>
     4711</div>
     4712<p>Configuration options which are part of the configuration files PPP section must be prefixed by &#8216;PPP/&#8217;. As an example, option &#8216;minObs&#8217; from the PPP section of the BNC configuration file would be specified as &#8216;PPP/minObs&#8217; on a command line.</p>
     4713<p>Values for configuration options can be introduced via command line exactly as they show up in the configuration file. However, any value containing one or more blank characters must be enclosed by quotation marks when specified on command line.</p>
     4714<p id="bibtex-bibliography-chapter5-0"><table class="docutils citation" frame="void" id="rupprecht2000a" rules="none">
     4715<colgroup><col class="label" /><col /></colgroup>
     4716<tbody valign="top">
     4717<tr><td class="label">[1]</td><td>W&nbsp;Rupprecht. DGPS-IP. 2000. URL: <a class="reference external" href="http://www.wsrcc.com/wolfgang/gps/dgps-ip.html">http://www.wsrcc.com/wolfgang/gps/dgps-ip.html</a>.</td></tr>
     4718</tbody>
     4719</table>
     4720<table class="docutils citation" frame="void" id="weber2004a" rules="none">
     4721<colgroup><col class="label" /><col /></colgroup>
     4722<tbody valign="top">
     4723<tr><td class="label">[2]</td><td>G&nbsp;Weber and M&nbsp;Honkala. The future is talking Ntrip. Newsletter, Trimble GmbH Raunheim, Germany, 2004.</td></tr>
     4724</tbody>
     4725</table>
     4726<table class="docutils citation" frame="void" id="weber2005a" rules="none">
     4727<colgroup><col class="label" /><col /></colgroup>
     4728<tbody valign="top">
     4729<tr><td class="label">[3]</td><td>G&nbsp;Weber, D&nbsp;Dettmering, and H&nbsp;Gebhard. Networked Transport of RTCM via Internet Protocol (NTRIP). In F&nbsp;Sanso, editor, <em>A Window on the Future, Proceedings of the IAG General Assembly, Sapporo, Japan, 2003</em>, volume 128, 60–64. Springer, 2005.</td></tr>
     4730</tbody>
     4731</table>
     4732<table class="docutils citation" frame="void" id="weber2005b" rules="none">
     4733<colgroup><col class="label" /><col /></colgroup>
     4734<tbody valign="top">
     4735<tr><td class="label">[4]</td><td>G&nbsp;Weber, D&nbsp;Dettmering, H&nbsp;Gebhard, and R&nbsp;Kalafus. Networked Transport of RTCM via Internet Protocol (Ntrip) ... IP-Streaming for Real-Time GNSS Applications. In <em>Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005), September 13 - 16, 2005, Long Beach Convention Center, Long Beach, CA, USA</em>. 2005.</td></tr>
     4736</tbody>
     4737</table>
     4738<table class="docutils citation" frame="void" id="rtcm-sc104-2011a" rules="none">
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     4740<tbody valign="top">
     4741<tr><td class="label">[5]</td><td>RTCM-SC104. Amendment 1 to RTCM Standard 10410.1 Networked Transport of RTCM via Internet Protocol (Ntrip) - Version 2.0. RTCM Papter 139-2011-SC104-STD, 2011. <a class="reference external" href="http://dx.doi.org/10.1007/s10291-012-0255-y">doi:10.1007/s10291-012-0255-y</a>.</td></tr>
     4742</tbody>
     4743</table>
     4744<table class="docutils citation" frame="void" id="weber2009a" rules="none">
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     4746<tbody valign="top">
     4747<tr><td class="label">[6]</td><td>G&nbsp;Weber and L&nbsp;Mervart. The BKG Ntrip Client (BNC). In <em>Report on EUREF Symposium 2007 in London</em>, volume 42 of Mitteilungen des Bundesamtes fuer Kartographie und Geodaesie. Frankfurt am Main, 2009.</td></tr>
     4748</tbody>
     4749</table>
     4750<table class="docutils citation" frame="void" id="estey1999a" rules="none">
     4751<colgroup><col class="label" /><col /></colgroup>
     4752<tbody valign="top">
     4753<tr><td class="label"><a class="fn-backref" href="#id3">[7]</a></td><td>L&nbsp;H Estey and C&nbsp;M Meertens. TEQC: The Multi-Purpose Toolkit for GPS/GLONASS Data. <em>GPS Solutions</em>, 3(1):42–49, 1999. <a class="reference external" href="http://dx.doi.org/10.1007/PL00012778">doi:10.1007/PL00012778</a>.</td></tr>
     4754</tbody>
     4755</table>
     4756<table class="docutils citation" frame="void" id="caissy2012a" rules="none">
     4757<colgroup><col class="label" /><col /></colgroup>
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     4759<tr><td class="label"><a class="fn-backref" href="#id9">[8]</a></td><td>M&nbsp;Caissy, L&nbsp;Agrotis, G&nbsp;Weber, M&nbsp;Hernandez-Pajares, and U.&nbsp;Hugentobler. Coming Soon: The International GNSS Real-Time Service. <em>GPS World</em>, 23(6):52–58, 2012.</td></tr>
     4760</tbody>
     4761</table>
     4762<table class="docutils citation" frame="void" id="mervart2008a" rules="none">
     4763<colgroup><col class="label" /><col /></colgroup>
     4764<tbody valign="top">
     4765<tr><td class="label"><a class="fn-backref" href="#id11">[9]</a></td><td>L&nbsp;Mervart, Z&nbsp;Lukes, C&nbsp;Rocken, and T&nbsp;Iwabuchi. Precise Point Positioning With Ambiguity Resolution in Real-Time. In <em>Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008), September 16-19, 2008, Savannah International Convention Center, Savannah, GA, USA</em>, 397–405. 2008.</td></tr>
     4766</tbody>
     4767</table>
     4768<table class="docutils citation" frame="void" id="mervart2011a" rules="none">
     4769<colgroup><col class="label" /><col /></colgroup>
     4770<tbody valign="top">
     4771<tr><td class="label"><a class="fn-backref" href="#id12">[10]</a></td><td>L&nbsp;Mervart and G&nbsp;Weber. Real-time Combination of GNSS Orbit and Clock Correction Streams Using a Kalman Filter Approach. In <em>Proceedings of the 24th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS 2011), September 20 - 23, 2011, Oregon Convention Center, Portland, Oregon, Portland, OR , USA</em>. 2011.</td></tr>
     4772</tbody>
     4773</table>
     4774<table class="docutils citation" frame="void" id="huisman2012a" rules="none">
     4775<colgroup><col class="label" /><col /></colgroup>
     4776<tbody valign="top">
     4777<tr><td class="label"><a class="fn-backref" href="#id13">[11]</a></td><td>L&nbsp;Huisman, P&nbsp;Teunissen, and C&nbsp;Hu. GNSS Precise Point Positioning in Regional Reference Frames Using Real-time Broadcast Corrections. <em>Journal of Applied Geodesy</em>, 6(1):15–23, 2012. <a class="reference external" href="http://dx.doi.org/10.1515/jag-2011-0006">doi:10.1515/jag-2011-0006</a>.</td></tr>
     4778</tbody>
     4779</table>
     4780<table class="docutils citation" frame="void" id="pearson2013a" rules="none">
     4781<colgroup><col class="label" /><col /></colgroup>
     4782<tbody valign="top">
     4783<tr><td class="label"><a class="fn-backref" href="#id14">[12]</a></td><td>C&nbsp;Pearson and R&nbsp;Snay. Introducing HTDP 3.1 to transform coordinates across time and spatial reference frames. <em>GPS Solutions</em>, 17(1):1–15, 2013.</td></tr>
     4784</tbody>
     4785</table>
     4786<table class="docutils citation" frame="void" id="dawson2010a" rules="none">
     4787<colgroup><col class="label" /><col /></colgroup>
     4788<tbody valign="top">
     4789<tr><td class="label"><a class="fn-backref" href="#id15">[13]</a></td><td>J&nbsp;Dawson and A.&nbsp;Woods. ITRF to GDA94 coordinate transformations. <em>Journal of Applied Geodesy</em>, 4:189–199, 2010. <a class="reference external" href="http://dx.doi.org/10.1515/JAG.2010.019">doi:10.1515/JAG.2010.019</a>.</td></tr>
     4790</tbody>
     4791</table>
     4792<table class="docutils citation" frame="void" id="ibge-dgc2016a" rules="none">
     4793<colgroup><col class="label" /><col /></colgroup>
     4794<tbody valign="top">
     4795<tr><td class="label"><a class="fn-backref" href="#id16">[14]</a></td><td>IBGE/DGC, Diretoria de Geociencias Brazil, CGED-Coordenacao de Geodesia. Transformation ITRF2008 to SIRGAS2000. personal communication from CGED-Coordenacao de Geodesia, 2016.</td></tr>
     4796</tbody>
     4797</table>
     4798<table class="docutils citation" frame="void" id="acuha2016a" rules="none">
     4799<colgroup><col class="label" /><col /></colgroup>
     4800<tbody valign="top">
     4801<tr><td class="label"><a class="fn-backref" href="#id17">[15]</a></td><td>G&nbsp;Acuha. Transformation parameters ITRF2005 to SIRGAS95. personal communication. Laboratorio de Geodesia Fisica y Satelital at Zulia University (LGFS-LUZ).</td></tr>
     4802</tbody>
     4803</table>
     4804<table class="docutils citation" frame="void" id="sirgas2009a" rules="none">
     4805<colgroup><col class="label" /><col /></colgroup>
     4806<tbody valign="top">
     4807<tr><td class="label"><a class="fn-backref" href="#id18">[16]</a></td><td>Sirgas. Terrestrial Reference Frames. 2009. URL: <a class="reference external" href="http://tai.bipm.org/iers/convupdt/convupdt_c4.html">http://tai.bipm.org/iers/convupdt/convupdt_c4.html</a>.</td></tr>
     4808</tbody>
     4809</table>
     4810<table class="docutils citation" frame="void" id="franke2008a" rules="none">
     4811<colgroup><col class="label" /><col /></colgroup>
     4812<tbody valign="top">
     4813<tr><td class="label"><a class="fn-backref" href="#id19">[17]</a></td><td>P&nbsp;Franke. Referenzkoordinaten für SAPOS, Empfehlungen der Projektgruppe SAPOS-Koordinatenmonitoring 2008. personal communication, 2008.</td></tr>
     4814</tbody>
     4815</table>
     4816<table class="docutils citation" frame="void" id="weber2007a" rules="none">
     4817<colgroup><col class="label" /><col /></colgroup>
     4818<tbody valign="top">
     4819<tr><td class="label">[18]</td><td>G&nbsp;Weber, L&nbsp;Mervart, Z&nbsp;Lukes, C&nbsp;Rocken, and J&nbsp;Dousa. Real-time Clock and Orbit Corrections for Improved Point Positioning via NTRIP. In <em>Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007), September 25 - 28, 2007, Fort Worth Convention Center, Fort Worth, TX, USA</em>. 2007.</td></tr>
     4820</tbody>
    48554821</table>
    48564822</p>
    4857 
    4858 <p><h4>3.2 <a name="rtcm">RTCM Standards</h4></p>
    4859 
    4860 <p>
    4861 The Radio Technical Commission for Maritime Services (RTCM) is an international non-profit scientific, professional and educational organization. Special Committees provide a forum in which governmental and non-governmental members work together to develop technical standards and consensus recommendations in regard to issues of particular concern. RTCM is engaged in the development of international standards for maritime radionavigation and radiocommunication systems. The output documents and reports prepared by RTCM Committees are published as RTCM Recommended Standards. Topics concerning Differential Global Navigation Satellite Systems (DGNSS) are handled by the Special Committee SC 104.
    4862 <p>
    4863 Personal copies of RTCM Recommended Standards can be ordered through <u>http://www.rtcm.org/orderinfo.php</u>.
    4864 </p>
    4865 
    4866 <p><h4>3.2.1 <a name="ntrip1">Ntrip Version 1</h4></p>
    4867 
    4868 <p>
    4869 'Networked Transport of RTCM via Internet Protocol' Version 1.0 (Ntrip) stands for an application-level protocol streaming Global Navigation Satellite System (GNSS) data over the Internet. Ntrip is a generic, stateless protocol based on the Hypertext Transfer Protocol HTTP/1.1. The HTTP objects are enhanced to GNSS data streams.
    4870 </p>
    4871 
    4872 <p>
    4873 Ntrip Version 1 is an RTCM standard designed for disseminating differential correction data (e.g. in the RTCM-104 format) or other kinds of GNSS streaming data to stationary or mobile users over the Internet, allowing simultaneous PC, Laptop, PDA, or receiver connections to a broadcasting host. Ntrip supports wireless Internet access through Mobile IP Networks like GSM, GPRS, EDGE, or UMTS.
    4874 </p>
    4875 
    4876 <p>
    4877 Ntrip is implemented in three system software components: Ntrip Clients, Ntrip Servers and Ntrip Broadcasters. The Ntrip Broadcaster is the actual HTTP server program whereas Ntrip Client and Ntrip Server are acting as HTTP clients.
    4878 </p>
    4879 
    4880 <p>
    4881 Ntrip is an open none-proprietary protocol. Major characteristics of Ntrip's dissemination technique are:
    4882 <ul>
     4823</div>
     4824</div>
     4825</div>
     4826<span id="document-annex"></span><span class="target" id="index-0"></span><div class="section" id="annex">
     4827<h2>Annex<a class="headerlink" href="#annex" title="Permalink to this headline">¶</a></h2>
     4828<div class="section" id="revision-history">
     4829<span id="index-1"></span><h3>Revision History<a class="headerlink" href="#revision-history" title="Permalink to this headline">¶</a></h3>
     4830<table border="1" class="docutils">
     4831<colgroup>
     4832<col width="5%" />
     4833<col width="8%" />
     4834<col width="87%" />
     4835</colgroup>
     4836<tbody valign="top">
     4837<tr class="row-odd"><td>Dec 2006</td>
     4838<td>Version 1.0b</td>
     4839<td>[Add] First Beta Binaries published based on Qt 4.2.3.</td>
     4840</tr>
     4841<tr class="row-even"><td>Jan 2007</td>
     4842<td>Version 1.1b</td>
     4843<td>[Add] Observables C2, S1, and S2</td>
     4844</tr>
     4845<tr class="row-odd"><td></td>
     4846<td>&nbsp;</td>
     4847<td>[Add] Virtual reference station access</td>
     4848</tr>
     4849<tr class="row-even"><td></td>
     4850<td>&nbsp;</td>
     4851<td>[Bug] RTCM2 decoder time tag fixed</td>
     4852</tr>
     4853<tr class="row-odd"><td></td>
     4854<td>&nbsp;</td>
     4855<td>[Mod] Small letters for public RINEX skeleton files</td>
     4856</tr>
     4857<tr class="row-even"><td></td>
     4858<td>&nbsp;</td>
     4859<td>[Add] Online help through Shift+F1</td>
     4860</tr>
     4861<tr class="row-odd"><td>Apr 2007</td>
     4862<td>Version 1.2b</td>
     4863<td>[Bug] Output only through IP port</td>
     4864</tr>
     4865<tr class="row-even"><td></td>
     4866<td>&nbsp;</td>
     4867<td>[Bug] Method &#8216;reconnecting&#8217; now thread-save</td>
     4868</tr>
     4869<tr class="row-odd"><td></td>
     4870<td>&nbsp;</td>
     4871<td>[Add] ZERO decoder added</td>
     4872</tr>
     4873<tr class="row-even"><td></td>
     4874<td>&nbsp;</td>
     4875<td>[Mod] Download public RINEX skeletons once per day</td>
     4876</tr>
     4877<tr class="row-odd"><td></td>
     4878<td>&nbsp;</td>
     4879<td>[Mod] Upgrade to Qt Version 4.2.3</td>
     4880</tr>
     4881<tr class="row-even"><td></td>
     4882<td>&nbsp;</td>
     4883<td>[Mod] Replace &#8216;system&#8217; call for RINEX script by &#8216;QProcess&#8217;</td>
     4884</tr>
     4885<tr class="row-odd"><td></td>
     4886<td>&nbsp;</td>
     4887<td>[Add] HTTP Host directive for skeleton file download</td>
     4888</tr>
     4889<tr class="row-even"><td></td>
     4890<td>&nbsp;</td>
     4891<td>[Add] Percent encoding for user IDs and passwords</td>
     4892</tr>
     4893<tr class="row-odd"><td></td>
     4894<td>&nbsp;</td>
     4895<td>[Bug] Exit execution of calling thread for RTCM3 streams</td>
     4896</tr>
     4897<tr class="row-even"><td></td>
     4898<td>&nbsp;</td>
     4899<td>[Bug] Signal-slot mechanism for threads</td>
     4900</tr>
     4901<tr class="row-odd"><td>May 2007</td>
     4902<td>Version 1.3</td>
     4903<td>[Add] Source code published.</td>
     4904</tr>
     4905<tr class="row-even"><td>Jul 2007</td>
     4906<td>Version 1.4</td>
     4907<td>[Bug] Skip messages from proxy server</td>
     4908</tr>
     4909<tr class="row-odd"><td></td>
     4910<td>&nbsp;</td>
     4911<td>[Bug] Call RINEX script through &#8216;nohup&#8217;</td>
     4912</tr>
     4913<tr class="row-even"><td>Apr 2008</td>
     4914<td>Version 1.5</td>
     4915<td>[Add] Handle ephemeris from RTCM Version 3 streams</td>
     4916</tr>
     4917<tr class="row-odd"><td></td>
     4918<td>&nbsp;</td>
     4919<td>[Add] Upgrade to Qt Version 4.3.2</td>
     4920</tr>
     4921<tr class="row-even"><td></td>
     4922<td>&nbsp;</td>
     4923<td>[Add] Optional RINEX v3 output</td>
     4924</tr>
     4925<tr class="row-odd"><td></td>
     4926<td>&nbsp;</td>
     4927<td>[Add] SBAS support</td>
     4928</tr>
     4929<tr class="row-even"><td></td>
     4930<td>&nbsp;</td>
     4931<td>[Bug] RINEX skeleton download following stream outage</td>
     4932</tr>
     4933<tr class="row-odd"><td></td>
     4934<td>&nbsp;</td>
     4935<td>[Add] Handle ephemeris from RTIGS streams</td>
     4936</tr>
     4937<tr class="row-even"><td></td>
     4938<td>&nbsp;</td>
     4939<td>[Add] Monitor stream failure/recovery and latency</td>
     4940</tr>
     4941<tr class="row-odd"><td></td>
     4942<td>&nbsp;</td>
     4943<td>[Mod] Redesign of main window</td>
     4944</tr>
     4945<tr class="row-even"><td></td>
     4946<td>&nbsp;</td>
     4947<td>[Bug] Freezing of About window on Mac OS X</td>
     4948</tr>
     4949<tr class="row-odd"><td></td>
     4950<td>&nbsp;</td>
     4951<td>[Bug] Fixed problem with PRN 32 in RTCM v2 decoder</td>
     4952</tr>
     4953<tr class="row-even"><td></td>
     4954<td>&nbsp;</td>
     4955<td>[Bug] Fix for Trimble 4000SSI receivers in RTCM v2 decoder</td>
     4956</tr>
     4957<tr class="row-odd"><td></td>
     4958<td>&nbsp;</td>
     4959<td>[Mod] Major revision of input buffer in RTCM v2 decoder</td>
     4960</tr>
     4961<tr class="row-even"><td>Dec 2008</td>
     4962<td>Version 1.6</td>
     4963<td>[Mod] Fill blank columns in RINEX v3 with 0.000</td>
     4964</tr>
     4965<tr class="row-odd"><td></td>
     4966<td>&nbsp;</td>
     4967<td>[Add] RTCM v3 decoder for orbit and clock corrections</td>
     4968</tr>
     4969<tr class="row-even"><td></td>
     4970<td>&nbsp;</td>
     4971<td>[Add] Check RTCM v3 streams for incoming message types</td>
     4972</tr>
     4973<tr class="row-odd"><td></td>
     4974<td>&nbsp;</td>
     4975<td>[Add] Decode RTCM v2 message types 3, 20, 21, and 22</td>
     4976</tr>
     4977<tr class="row-even"><td></td>
     4978<td>&nbsp;</td>
     4979<td>[Add] Loss of lock and lock time indicator</td>
     4980</tr>
     4981<tr class="row-odd"><td></td>
     4982<td>&nbsp;</td>
     4983<td>[Bug] Rounding error in RTCM v3 decoder concerning GLONASS height</td>
     4984</tr>
     4985<tr class="row-even"><td></td>
     4986<td>&nbsp;</td>
     4987<td>[Mod] Accept GLONASS in RTCM v3 when transmitted first</td>
     4988</tr>
     4989<tr class="row-odd"><td></td>
     4990<td>&nbsp;</td>
     4991<td>[Add] Leap second 1 January 2009</td>
     4992</tr>
     4993<tr class="row-even"><td></td>
     4994<td>&nbsp;</td>
     4995<td>[Add] Offline mode, read data from file</td>
     4996</tr>
     4997<tr class="row-odd"><td></td>
     4998<td>&nbsp;</td>
     4999<td>[Add] Output antenna descriptor, coordinates and eccentricities from RTCM v3</td>
     5000</tr>
     5001<tr class="row-even"><td></td>
     5002<td>&nbsp;</td>
     5003<td>[Add] Reconfiguration on-the-fly</td>
     5004</tr>
     5005<tr class="row-odd"><td></td>
     5006<td>&nbsp;</td>
     5007<td>[Mod] Binary output of synchronized observations</td>
     5008</tr>
     5009<tr class="row-even"><td></td>
     5010<td>&nbsp;</td>
     5011<td>[Add] Binary output of unsynchronized observations</td>
     5012</tr>
     5013<tr class="row-odd"><td></td>
     5014<td>&nbsp;</td>
     5015<td>[Bug] Fixed problem with joined RTCM v3 blocks</td>
     5016</tr>
     5017<tr class="row-even"><td>Dec 2008</td>
     5018<td>Version 1.6.1</td>
     5019<td>[Mod] HTTP GET when no proxy in front</td>
     5020</tr>
     5021<tr class="row-odd"><td>Nov 2009</td>
     5022<td>Version 1.7</td>
     5023<td>[Bug] RINEX Navigation file format</td>
     5024</tr>
     5025<tr class="row-even"><td></td>
     5026<td>&nbsp;</td>
     5027<td>[Add] Upgrade to Qt Version 4.5.2</td>
     5028</tr>
     5029<tr class="row-odd"><td></td>
     5030<td>&nbsp;</td>
     5031<td>[Add] Support of Ntrip v2</td>
     5032</tr>
     5033<tr class="row-even"><td></td>
     5034<td>&nbsp;</td>
     5035<td>[Add] Rover support via serial port</td>
     5036</tr>
     5037<tr class="row-odd"><td></td>
     5038<td>&nbsp;</td>
     5039<td>[Add] Show broadcaster table from www.rtcm-ntrip.org</td>
     5040</tr>
     5041<tr class="row-even"><td></td>
     5042<td>&nbsp;</td>
     5043<td>[Add] Enable/disable panel widgets</td>
     5044</tr>
     5045<tr class="row-odd"><td></td>
     5046<td>&nbsp;</td>
     5047<td>[Add] User defined configuration filename</td>
     5048</tr>
     5049<tr class="row-even"><td></td>
     5050<td>&nbsp;</td>
     5051<td>[Mod] Switch to configuration files in ini-Format</td>
     5052</tr>
     5053<tr class="row-odd"><td></td>
     5054<td>&nbsp;</td>
     5055<td>[Add] Daily logfile rotation</td>
     5056</tr>
     5057<tr class="row-even"><td></td>
     5058<td>&nbsp;</td>
     5059<td>[Add] Read from TCP/IP port, by-pass Ntrip transport protocol</td>
     5060</tr>
     5061<tr class="row-odd"><td></td>
     5062<td>&nbsp;</td>
     5063<td>[Add] Save NMEA sentences coming from rover</td>
     5064</tr>
     5065<tr class="row-even"><td></td>
     5066<td>&nbsp;</td>
     5067<td>[Add] Auto start</td>
     5068</tr>
     5069<tr class="row-odd"><td></td>
     5070<td>&nbsp;</td>
     5071<td>[Add] Drag and drop ini files</td>
     5072</tr>
     5073<tr class="row-even"><td></td>
     5074<td>&nbsp;</td>
     5075<td>[Add] Read from serial port, by-pass Ntrip transport protocol</td>
     5076</tr>
     5077<tr class="row-odd"><td></td>
     5078<td>&nbsp;</td>
     5079<td>[Mod] Update of SSR messages following RTCM 091-2009-SC104-542</td>
     5080</tr>
     5081<tr class="row-even"><td></td>
     5082<td>&nbsp;</td>
     5083<td>[Add] Read from UPD port, by-pass Ntrip transport protocol</td>
     5084</tr>
     5085<tr class="row-odd"><td></td>
     5086<td>&nbsp;</td>
     5087<td>[Mod] Output format of Broadcast Corrections</td>
     5088</tr>
     5089<tr class="row-even"><td></td>
     5090<td>&nbsp;</td>
     5091<td>[Add] Throughput plot</td>
     5092</tr>
     5093<tr class="row-odd"><td></td>
     5094<td>&nbsp;</td>
     5095<td>[Add] Latency plot</td>
     5096</tr>
     5097<tr class="row-even"><td>Nov 2009</td>
     5098<td>Version 1.8</td>
     5099<td>[Mod] On-the-fly reconfiguration of latency and throughput plots</td>
     5100</tr>
     5101<tr class="row-odd"><td>Feb 2010</td>
     5102<td>Version 2.0</td>
     5103<td>[Mod] Change sign of Broadcast Corrections</td>
     5104</tr>
     5105<tr class="row-even"><td></td>
     5106<td>&nbsp;</td>
     5107<td>[Add] Real-time PPP option</td>
     5108</tr>
     5109<tr class="row-odd"><td>Jun 2010</td>
     5110<td>Version 2.1</td>
     5111<td>[Bug] SSR GLONASS message generation</td>
     5112</tr>
     5113<tr class="row-even"><td></td>
     5114<td>&nbsp;</td>
     5115<td>[Add] PPP in post processing mode</td>
     5116</tr>
     5117<tr class="row-odd"><td></td>
     5118<td>&nbsp;</td>
     5119<td>[Mod] Update of SSR messages following draft dated 2010-04-12</td>
     5120</tr>
     5121<tr class="row-even"><td></td>
     5122<td>&nbsp;</td>
     5123<td>[Mod] Generating error message when observation epoch is wrong</td>
     5124</tr>
     5125<tr class="row-odd"><td>Jul 2010</td>
     5126<td>Version 2.2</td>
     5127<td>[Bug] GLONASS ephemeris time</td>
     5128</tr>
     5129<tr class="row-even"><td>Aug 2010</td>
     5130<td>Version 2.3</td>
     5131<td>[Mod] Internal format for saving raw streams</td>
     5132</tr>
     5133<tr class="row-odd"><td></td>
     5134<td>&nbsp;</td>
     5135<td>[Bug] Outlier detection in GLONASS ambiguity resolution</td>
     5136</tr>
     5137<tr class="row-even"><td></td>
     5138<td>&nbsp;</td>
     5139<td>[Mod] Format of PPP logs in logfile</td>
     5140</tr>
     5141<tr class="row-odd"><td></td>
     5142<td>&nbsp;</td>
     5143<td>[Bug] Complete acceleration terms for GLONASS ephemeris</td>
     5144</tr>
     5145<tr class="row-even"><td></td>
     5146<td>&nbsp;</td>
     5147<td>[Bug] Handling ephemeris IOD&#8217;s in PPP mode</td>
     5148</tr>
     5149<tr class="row-odd"><td>Dec 2010</td>
     5150<td>Version 2.4</td>
     5151<td>[Add] Output of averaged positions when in PPP mode</td>
     5152</tr>
     5153<tr class="row-even"><td></td>
     5154<td>&nbsp;</td>
     5155<td>[Mod] Use always the latest received set of Broadcast Ephemeris</td>
     5156</tr>
     5157<tr class="row-odd"><td></td>
     5158<td>&nbsp;</td>
     5159<td>[Add] QuickStart PPP option</td>
     5160</tr>
     5161<tr class="row-even"><td></td>
     5162<td>&nbsp;</td>
     5163<td>[Mod] Improvement of data sharing efficiency among different threads</td>
     5164</tr>
     5165<tr class="row-odd"><td></td>
     5166<td>&nbsp;</td>
     5167<td>[Mod] Design of PPP panel section</td>
     5168</tr>
     5169<tr class="row-even"><td></td>
     5170<td>&nbsp;</td>
     5171<td>[Add] Sigmas for observations and parameters</td>
     5172</tr>
     5173<tr class="row-odd"><td></td>
     5174<td>&nbsp;</td>
     5175<td>[Add] Stream distribution map</td>
     5176</tr>
     5177<tr class="row-even"><td></td>
     5178<td>&nbsp;</td>
     5179<td>[Bug] GPS Ephemeris in RINEX v3 format</td>
     5180</tr>
     5181<tr class="row-odd"><td>Feb 2011</td>
     5182<td>Version 2.5</td>
     5183<td>[Add] PPP option for sync of clock observations and corrections</td>
     5184</tr>
     5185<tr class="row-even"><td></td>
     5186<td>&nbsp;</td>
     5187<td>[Add] Drafted RTCM v3 Galileo ephemeris messages 1045</td>
     5188</tr>
     5189<tr class="row-odd"><td></td>
     5190<td>&nbsp;</td>
     5191<td>[Add] Drafted RTCM v3 Multiple Signal Messages</td>
     5192</tr>
     5193<tr class="row-even"><td></td>
     5194<td>&nbsp;</td>
     5195<td>[Add] Optional specification of sigmas for coordinates and troposphere in PPP</td>
     5196</tr>
     5197<tr class="row-odd"><td></td>
     5198<td>&nbsp;</td>
     5199<td>[Add] Include Galileo in SPP</td>
     5200</tr>
     5201<tr class="row-even"><td></td>
     5202<td>&nbsp;</td>
     5203<td>[Add] Include Galileo observations in output via IP port</td>
     5204</tr>
     5205<tr class="row-odd"><td></td>
     5206<td>&nbsp;</td>
     5207<td>[Add] Include Galileo observations in output via RINEX v3 files</td>
     5208</tr>
     5209<tr class="row-even"><td></td>
     5210<td>&nbsp;</td>
     5211<td>[Mod] Interface format for feeding a real-time engine with observations</td>
     5212</tr>
     5213<tr class="row-odd"><td></td>
     5214<td>&nbsp;</td>
     5215<td>[Add] Correct observations for Antenna Phase Center offsets</td>
     5216</tr>
     5217<tr class="row-even"><td></td>
     5218<td>&nbsp;</td>
     5219<td>[Add] Combine orbit/clock correction streams</td>
     5220</tr>
     5221<tr class="row-odd"><td></td>
     5222<td>&nbsp;</td>
     5223<td>[Add] Specify corrections mountpoint in PPP panel</td>
     5224</tr>
     5225<tr class="row-even"><td>Apr 2011</td>
     5226<td>Version 2.6</td>
     5227<td>[Add] Complete integration of BNS in BNC</td>
     5228</tr>
     5229<tr class="row-odd"><td></td>
     5230<td>&nbsp;</td>
     5231<td>[Add] SP3 and Clock RINEX output</td>
     5232</tr>
     5233<tr class="row-even"><td></td>
     5234<td>&nbsp;</td>
     5235<td>[Add] PPP in post processing Mode</td>
     5236</tr>
     5237<tr class="row-odd"><td></td>
     5238<td>&nbsp;</td>
     5239<td>[Add] Some RINEX editing &amp; QC functionality</td>
     5240</tr>
     5241<tr class="row-even"><td></td>
     5242<td>&nbsp;</td>
     5243<td>[Add] Threshold for orbit outliers in combination solution</td>
     5244</tr>
     5245<tr class="row-odd"><td></td>
     5246<td>&nbsp;</td>
     5247<td>[Add] Real-time engine becomes orbit/clock server instead of client</td>
     5248</tr>
     5249<tr class="row-even"><td></td>
     5250<td>&nbsp;</td>
     5251<td>[Mod] &#8216;EOE&#8217; added to orbit/clock stream from engine</td>
     5252</tr>
     5253<tr class="row-odd"><td></td>
     5254<td>&nbsp;</td>
     5255<td>[Add] Correction for antenna eccentricities</td>
     5256</tr>
     5257<tr class="row-even"><td></td>
     5258<td>&nbsp;</td>
     5259<td>[Add] Quick start mode for PPP</td>
     5260</tr>
     5261<tr class="row-odd"><td></td>
     5262<td>&nbsp;</td>
     5263<td>[Mod] Design of format for feeding engine changed to follow RINEX v3</td>
     5264</tr>
     5265<tr class="row-even"><td></td>
     5266<td>&nbsp;</td>
     5267<td>[Mod] Implementation of SSR message encoding modified according to standard</td>
     5268</tr>
     5269<tr class="row-odd"><td></td>
     5270<td>&nbsp;</td>
     5271<td>[Add] SSL/TLS Support of Ntrip Version 2</td>
     5272</tr>
     5273<tr class="row-even"><td></td>
     5274<td>&nbsp;</td>
     5275<td>[Mod] Switch to Qt version 4.7.3</td>
     5276</tr>
     5277<tr class="row-odd"><td></td>
     5278<td>&nbsp;</td>
     5279<td>[Add] RINEX editing, concatenation and quality check</td>
     5280</tr>
     5281<tr class="row-even"><td></td>
     5282<td>&nbsp;</td>
     5283<td>[Add] Reading all configuration options from command line</td>
     5284</tr>
     5285<tr class="row-odd"><td></td>
     5286<td>&nbsp;</td>
     5287<td>[Mod] RTCM v3 Galileo Broadcast Ephemeris message 1045</td>
     5288</tr>
     5289<tr class="row-even"><td></td>
     5290<td>&nbsp;</td>
     5291<td>[Mod] Change default configuration file suffix from &#8216;ini&#8217; to &#8216;bnc&#8217;</td>
     5292</tr>
     5293<tr class="row-odd"><td></td>
     5294<td>&nbsp;</td>
     5295<td>[Add] Specific rates for orbits and clocks in streams and SP3/RNX files</td>
     5296</tr>
     5297<tr class="row-even"><td></td>
     5298<td>&nbsp;</td>
     5299<td>[Add] Version 2.6 published, May 2012</td>
     5300</tr>
     5301<tr class="row-odd"><td>Sep 2012</td>
     5302<td>Version 2.7</td>
     5303<td>[Bug] Bug in L5 decoding fixed</td>
     5304</tr>
     5305<tr class="row-even"><td></td>
     5306<td>&nbsp;</td>
     5307<td>[Bug] Bug in on-the-fly configuration fixed</td>
     5308</tr>
     5309<tr class="row-odd"><td></td>
     5310<td>&nbsp;</td>
     5311<td>[Add] Clock RINEX file header extended</td>
     5312</tr>
     5313<tr class="row-even"><td></td>
     5314<td>&nbsp;</td>
     5315<td>[Add] Decoding/converting BeiDou and QZSS added</td>
     5316</tr>
     5317<tr class="row-odd"><td></td>
     5318<td>&nbsp;</td>
     5319<td>[Add] Work on RINEX v2 and v3 quality check started</td>
     5320</tr>
     5321<tr class="row-even"><td></td>
     5322<td>&nbsp;</td>
     5323<td>[Mod] Source code completely re-arranged</td>
     5324</tr>
     5325<tr class="row-odd"><td></td>
     5326<td>&nbsp;</td>
     5327<td>[Add] QWT and QWTPOLAR graphics libraries added</td>
     5328</tr>
     5329<tr class="row-even"><td></td>
     5330<td>&nbsp;</td>
     5331<td>[Add] RINEX QC through multipath analysis sky plot</td>
     5332</tr>
     5333<tr class="row-odd"><td></td>
     5334<td>&nbsp;</td>
     5335<td>[Add] RINEX QC through signal-to-noise ratio sky plot</td>
     5336</tr>
     5337<tr class="row-even"><td></td>
     5338<td>&nbsp;</td>
     5339<td>[Add] RINEX QC through satellite availability plot</td>
     5340</tr>
     5341<tr class="row-odd"><td></td>
     5342<td>&nbsp;</td>
     5343<td>[Add] RINEX QC through satellite elevation plot</td>
     5344</tr>
     5345<tr class="row-even"><td></td>
     5346<td>&nbsp;</td>
     5347<td>[Add] RINEX QC through PDOP plot</td>
     5348</tr>
     5349<tr class="row-odd"><td></td>
     5350<td>&nbsp;</td>
     5351<td>[Bug] Short periodic outages in PPP time series when &#8216;Sync Corr&#8217; set to zero</td>
     5352</tr>
     5353<tr class="row-even"><td></td>
     5354<td>&nbsp;</td>
     5355<td><a href="#id1"><span class="problematic" id="id2">|</span></a>Add] Log observation types contained in RTCM Version 3 MSM streams</td>
     5356</tr>
     5357<tr class="row-odd"><td></td>
     5358<td>&nbsp;</td>
     5359<td>[Add] Reading RINEX v3 observation type header records from RINEX skeleton</td>
     5360</tr>
     5361<tr class="row-even"><td></td>
     5362<td>&nbsp;</td>
     5363<td>[Add] Logfile for RINEX file editing and concatenation</td>
     5364</tr>
     5365<tr class="row-odd"><td></td>
     5366<td>&nbsp;</td>
     5367<td>[Add] Save PNG plot files on disk</td>
     5368</tr>
     5369<tr class="row-even"><td></td>
     5370<td>&nbsp;</td>
     5371<td>[Mod] Plot stream distribution map from Ntrip Broadcaster source-table</td>
     5372</tr>
     5373<tr class="row-odd"><td></td>
     5374<td>&nbsp;</td>
     5375<td>[Add] Plot stream distribution map from selected sources</td>
     5376</tr>
     5377<tr class="row-even"><td></td>
     5378<td>&nbsp;</td>
     5379<td>[Add] Version 2.7 published</td>
     5380</tr>
     5381<tr class="row-odd"><td>Sep 2012</td>
     5382<td>Version 2.8</td>
     5383<td>[Mod] Started work on new version in Sep 2012</td>
     5384</tr>
     5385<tr class="row-even"><td></td>
     5386<td>&nbsp;</td>
     5387<td>[Bug] Epoch special event flag in RINEX concatenation</td>
     5388</tr>
     5389<tr class="row-odd"><td></td>
     5390<td>&nbsp;</td>
     5391<td>[Bug] Limit RINEX v2 records length to 80 characters</td>
     5392</tr>
     5393<tr class="row-even"><td></td>
     5394<td>&nbsp;</td>
     5395<td>[Bug] SSR message update interval indicator</td>
     5396</tr>
     5397<tr class="row-odd"><td></td>
     5398<td>&nbsp;</td>
     5399<td>[Bug] Fixed SSR stream encoding and upload</td>
     5400</tr>
     5401<tr class="row-even"><td></td>
     5402<td>&nbsp;</td>
     5403<td>[Add] Concatenate RINEX v3 navigation files containing Galileo ephemeris</td>
     5404</tr>
     5405<tr class="row-odd"><td></td>
     5406<td>&nbsp;</td>
     5407<td>[Mod] Plausibility check of GLONASS ephemeris</td>
     5408</tr>
     5409<tr class="row-even"><td></td>
     5410<td>&nbsp;</td>
     5411<td>[Add] Correcting clocks for scale factor involved in transformation</td>
     5412</tr>
     5413<tr class="row-odd"><td></td>
     5414<td>&nbsp;</td>
     5415<td>[Mod] Orbit/clock interpolation in SSR stream encoding and upload to caster</td>
     5416</tr>
     5417<tr class="row-even"><td></td>
     5418<td>&nbsp;</td>
     5419<td>[Add] Version 2.8 published, Mar 2013</td>
     5420</tr>
     5421<tr class="row-odd"><td>Mar 2013</td>
     5422<td>Version 2.9</td>
     5423<td>[Add] Started work on new version in Mar 2013</td>
     5424</tr>
     5425<tr class="row-even"><td></td>
     5426<td>&nbsp;</td>
     5427<td>[Bug] SSR stream upload buffering disabled</td>
     5428</tr>
     5429<tr class="row-odd"><td></td>
     5430<td>&nbsp;</td>
     5431<td>[Mod] Format for feeding a connected GNSS engine</td>
     5432</tr>
     5433<tr class="row-even"><td></td>
     5434<td>&nbsp;</td>
     5435<td>[Mod] RTNET format for receiving data from a connected GNSS engine</td>
     5436</tr>
     5437<tr class="row-odd"><td></td>
     5438<td>&nbsp;</td>
     5439<td>[Add] Include Galileo in SPP</td>
     5440</tr>
     5441<tr class="row-even"><td></td>
     5442<td>&nbsp;</td>
     5443<td>[Add] RINEX QC multipath an SNR sky plots for GLONASS and Galileo</td>
     5444</tr>
     5445<tr class="row-odd"><td></td>
     5446<td>&nbsp;</td>
     5447<td>[Add] Bias estimation for GLONASS clocks in PPP</td>
     5448</tr>
     5449<tr class="row-even"><td></td>
     5450<td>&nbsp;</td>
     5451<td>[Add] Trace positions on GM or OSM maps</td>
     5452</tr>
     5453<tr class="row-odd"><td></td>
     5454<td>&nbsp;</td>
     5455<td>[Add] Version 2.9 published, Jul 2013</td>
     5456</tr>
     5457<tr class="row-even"><td>Aug 2013</td>
     5458<td>Version 2.10</td>
     5459<td>[Add] Started work on new version in Aug 2013</td>
     5460</tr>
     5461<tr class="row-odd"><td></td>
     5462<td>&nbsp;</td>
     5463<td>[Bug] Clock RINEX und SP3 file generation on Windows systems</td>
     5464</tr>
     5465<tr class="row-even"><td></td>
     5466<td>&nbsp;</td>
     5467<td>[Bug] Broadcast Ephemeris generation</td>
     5468</tr>
     5469<tr class="row-odd"><td></td>
     5470<td>&nbsp;</td>
     5471<td>[Add] Transformation ITRF2008 to NAD83 and DREF91</td>
     5472</tr>
     5473<tr class="row-even"><td></td>
     5474<td>&nbsp;</td>
     5475<td>[Add] CodeBias added to RTNET stream format</td>
     5476</tr>
     5477<tr class="row-odd"><td></td>
     5478<td>&nbsp;</td>
     5479<td>[Bug] GPS L2 in &#8216;Feed Engine&#8217; output</td>
     5480</tr>
     5481<tr class="row-even"><td></td>
     5482<td>&nbsp;</td>
     5483<td>[Mod] Made C1 in BeiDou default observation type instead of C2</td>
     5484</tr>
     5485<tr class="row-odd"><td></td>
     5486<td>&nbsp;</td>
     5487<td>[Add] Feed engine output sorted per stream</td>
     5488</tr>
     5489<tr class="row-even"><td></td>
     5490<td>&nbsp;</td>
     5491<td>[Add] Feed engine output filename change on-the-fly</td>
     5492</tr>
     5493<tr class="row-odd"><td></td>
     5494<td>&nbsp;</td>
     5495<td>[Add] &#8216;Append files&#8217; option for RINEX observation files</td>
     5496</tr>
     5497<tr class="row-even"><td></td>
     5498<td>&nbsp;</td>
     5499<td>[Mod] Broadcast Correction ASCII file output for message 1058 &amp; 1064 modified</td>
     5500</tr>
     5501<tr class="row-odd"><td></td>
     5502<td>&nbsp;</td>
     5503<td>[Bug] GPS L2 phase data in RINEX2</td>
     5504</tr>
     5505<tr class="row-even"><td></td>
     5506<td>&nbsp;</td>
     5507<td>[Bug] GLONASS frequency numbers</td>
     5508</tr>
     5509<tr class="row-odd"><td></td>
     5510<td>&nbsp;</td>
     5511<td>[Add] RTCM v3 Galileo Broadcast Ephemeris message 1046</td>
     5512</tr>
     5513<tr class="row-even"><td></td>
     5514<td>&nbsp;</td>
     5515<td>[Add] Reset ambiguities in PPP when orbit/clock correction IDs change</td>
     5516</tr>
     5517<tr class="row-odd"><td></td>
     5518<td>&nbsp;</td>
     5519<td>[Add] Satellite clock offsets are reset in adjustment for combination when orbit/clock correction IDs change</td>
     5520</tr>
     5521<tr class="row-even"><td></td>
     5522<td>&nbsp;</td>
     5523<td>[Add] Version 2.10 published in Dec 2013</td>
     5524</tr>
     5525<tr class="row-odd"><td>Dec 2013</td>
     5526<td>Version 2.11</td>
     5527<td>[Add] Started work on new version in Dec 2013</td>
     5528</tr>
     5529<tr class="row-even"><td></td>
     5530<td>&nbsp;</td>
     5531<td>[Mod] SIRGAS transformation parameters adjusted</td>
     5532</tr>
     5533<tr class="row-odd"><td></td>
     5534<td>&nbsp;</td>
     5535<td>[Mod] ANTEX file updated</td>
     5536</tr>
     5537<tr class="row-even"><td></td>
     5538<td>&nbsp;</td>
     5539<td>[Mod] RTCM SSR messages updated</td>
     5540</tr>
     5541<tr class="row-odd"><td></td>
     5542<td>&nbsp;</td>
     5543<td>[Bug] GLONASS code biases</td>
     5544</tr>
     5545<tr class="row-even"><td></td>
     5546<td>&nbsp;</td>
     5547<td>[Mod] Maximum number of GNSS observations increased</td>
     5548</tr>
     5549<tr class="row-odd"><td></td>
     5550<td>&nbsp;</td>
     5551<td>[Mod] Loss of lock handling changed</td>
     5552</tr>
     5553<tr class="row-even"><td></td>
     5554<td>&nbsp;</td>
     5555<td>[Add] Raw stream output through TCP/IP port</td>
     5556</tr>
     5557<tr class="row-odd"><td></td>
     5558<td>&nbsp;</td>
     5559<td>[Add] Version 2.11.0 published in Sep 2014</td>
     5560</tr>
     5561<tr class="row-even"><td>Sep 2014</td>
     5562<td>Version 2.12</td>
     5563<td>[Add] Started work on new version in Sep 2014</td>
     5564</tr>
     5565<tr class="row-odd"><td></td>
     5566<td>&nbsp;</td>
     5567<td>[Mod] RINEX file concatenation</td>
     5568</tr>
     5569<tr class="row-even"><td></td>
     5570<td>&nbsp;</td>
     5571<td>[Add] Observation code selection in RINEX file editing</td>
     5572</tr>
     5573<tr class="row-odd"><td></td>
     5574<td>&nbsp;</td>
     5575<td>[Mod] Routine handling of data input and output in RINEX format re-written</td>
     5576</tr>
     5577<tr class="row-even"><td></td>
     5578<td>&nbsp;</td>
     5579<td>[Mod] QC routines re-written with the goal of handling all signal types</td>
     5580</tr>
     5581<tr class="row-odd"><td></td>
     5582<td>&nbsp;</td>
     5583<td>[Add] Machine-readable output of RINEX QC</td>
     5584</tr>
     5585<tr class="row-even"><td></td>
     5586<td>&nbsp;</td>
     5587<td>[Add] PPP client functionality for parallel processing of an arbitrary number of stations in separate threads</td>
     5588</tr>
     5589<tr class="row-odd"><td></td>
     5590<td>&nbsp;</td>
     5591<td>[Bug] Receiver antenna PCO in ionosphere-free PPP mode</td>
     5592</tr>
     5593<tr class="row-even"><td></td>
     5594<td>&nbsp;</td>
     5595<td>[Add] NMEA output for any station processed in PPP mode</td>
     5596</tr>
     5597<tr class="row-odd"><td></td>
     5598<td>&nbsp;</td>
     5599<td>[Add] PPP processing of any number of linear combinations of GNSS measurements selected by user</td>
     5600</tr>
     5601<tr class="row-even"><td></td>
     5602<td>&nbsp;</td>
     5603<td>[Add] Encoding/Decoding RTCM SSR I messages for Galileo, BDS, SBAS and QZSS</td>
     5604</tr>
     5605<tr class="row-odd"><td></td>
     5606<td>&nbsp;</td>
     5607<td>[Add] Encoding/Decoding RTCM SSR phase bias messages</td>
     5608</tr>
     5609<tr class="row-even"><td></td>
     5610<td>&nbsp;</td>
     5611<td>[Add] Encoding/Decoding RTCM SSR ionospheric model messages, single-layer model for total electron content</td>
     5612</tr>
     5613<tr class="row-odd"><td></td>
     5614<td>&nbsp;</td>
     5615<td>[Add] RTCM SSR I messages for Galileo, BDS, SBAS and QZSS support from RTNET interface</td>
     5616</tr>
     5617<tr class="row-even"><td></td>
     5618<td>&nbsp;</td>
     5619<td>[Add] RTCM SSR II messages (phase biases and SSR ionospheric model) support from RTNET interface</td>
     5620</tr>
     5621<tr class="row-odd"><td></td>
     5622<td>&nbsp;</td>
     5623<td>[Add] Computation of VTEC and STEC from SSR ionospheric model messages for usage in PPP mode</td>
     5624</tr>
     5625<tr class="row-even"><td></td>
     5626<td>&nbsp;</td>
     5627<td>[Add] Handle old-fashioned SNR values in RINEX</td>
     5628</tr>
     5629<tr class="row-odd"><td></td>
     5630<td>&nbsp;</td>
     5631<td>[Mod] SNR and MP visualization depending on RINEX observation attribute</td>
     5632</tr>
     5633<tr class="row-even"><td></td>
     5634<td>&nbsp;</td>
     5635<td>[Bug] Saastamoinen tropospheric correction for very high elevation receivers</td>
     5636</tr>
     5637<tr class="row-odd"><td></td>
     5638<td>&nbsp;</td>
     5639<td>[Add] Comparison of SP3 files</td>
     5640</tr>
     5641<tr class="row-even"><td></td>
     5642<td>&nbsp;</td>
     5643<td>[Add] Encoding/Decoding of RTCM v3 proposal for Galileo Broadcast Ephemeris message 1046</td>
     5644</tr>
     5645<tr class="row-odd"><td></td>
     5646<td>&nbsp;</td>
     5647<td>[Add] Encoding/Decoding of RTCM v3 QZSS Broadcast Ephemeris message 1044</td>
     5648</tr>
     5649<tr class="row-even"><td></td>
     5650<td>&nbsp;</td>
     5651<td>[Add] Encoding/Decoding of RTCM v3 SBAS Broadcast Ephemeris message 1043</td>
     5652</tr>
     5653<tr class="row-odd"><td></td>
     5654<td>&nbsp;</td>
     5655<td>[Add] Encoding/Decoding of RTCM v3 BDS Broadcast Ephemeris message 63</td>
     5656</tr>
     5657<tr class="row-even"><td></td>
     5658<td>&nbsp;</td>
     5659<td>[Add] RINEX v3 support of Galileo, BDS, SBAS and QZSS Broadcast Ephemerides</td>
     5660</tr>
     5661<tr class="row-odd"><td></td>
     5662<td>&nbsp;</td>
     5663<td>[Add] Consideration of the aspect that Galileo NAV message can be provided for the same epoch but with different flags (I/NAV, F/NAV, DVS)</td>
     5664</tr>
     5665<tr class="row-even"><td></td>
     5666<td>&nbsp;</td>
     5667<td>[Bug] VRS support in sending NMEA in Auto/Manual mode to Ntrip Broadcaster</td>
     5668</tr>
     5669<tr class="row-odd"><td></td>
     5670<td>&nbsp;</td>
     5671<td>[Add] Forwarding NMEA GNGGA to Ntrip Broadcaster</td>
     5672</tr>
     5673<tr class="row-even"><td></td>
     5674<td>&nbsp;</td>
     5675<td>[Bug] Stream failure/recovery reports</td>
     5676</tr>
     5677<tr class="row-odd"><td></td>
     5678<td>&nbsp;</td>
     5679<td>[Add] Compute IODs for BDS and SBAS from CRC over Broadcast Ephemeris and clock parameters</td>
     5680</tr>
     5681<tr class="row-even"><td></td>
     5682<td>&nbsp;</td>
     5683<td>[Mod] PPP default options</td>
     5684</tr>
     5685<tr class="row-odd"><td></td>
     5686<td>&nbsp;</td>
     5687<td>[Add] Example configuration for SP3 file comparison</td>
     5688</tr>
     5689<tr class="row-even"><td></td>
     5690<td>&nbsp;</td>
     5691<td>[Add] Choose between code and phase observations when in PPP SSR I mode</td>
     5692</tr>
     5693<tr class="row-odd"><td></td>
     5694<td>&nbsp;</td>
     5695<td>[Bug] Reset time series plot when restarting PPP in post processing mode</td>
     5696</tr>
     5697<tr class="row-even"><td></td>
     5698<td>&nbsp;</td>
     5699<td>[Add] Broadcast ephemeris check regarding allowed age of data sets</td>
     5700</tr>
     5701<tr class="row-odd"><td></td>
     5702<td>&nbsp;</td>
     5703<td>[Add] Code bias usage for PPP SSR I mode</td>
     5704</tr>
     5705<tr class="row-even"><td></td>
     5706<td>&nbsp;</td>
     5707<td>[Add] Code bias, phase bias and VTEC usage in extended PPP mode</td>
     5708</tr>
     5709<tr class="row-odd"><td></td>
     5710<td>&nbsp;</td>
     5711<td>[Mod] Consideration of the full antenna PCO vector in all PPP modes</td>
     5712</tr>
     5713<tr class="row-even"><td></td>
     5714<td>&nbsp;</td>
     5715<td>[Add] Allow GPS-only and GLONASS-only RINEX v2 Navigation files</td>
     5716</tr>
     5717<tr class="row-odd"><td></td>
     5718<td>&nbsp;</td>
     5719<td>[Mod] SSR clock correction converted to seconds to be consistent with broadcast values</td>
     5720</tr>
     5721<tr class="row-even"><td></td>
     5722<td>&nbsp;</td>
     5723<td>[Add] Support Galileo I/NAV Broadcast Ephemeris</td>
     5724</tr>
     5725<tr class="row-odd"><td></td>
     5726<td>&nbsp;</td>
     5727<td>[Add] Extended RINEX v3 filenames</td>
     5728</tr>
     5729<tr class="row-even"><td></td>
     5730<td>&nbsp;</td>
     5731<td>[Add] Stream&#8217;s country added to configuration string &#8216;mountPoints&#8217;</td>
     5732</tr>
     5733<tr class="row-odd"><td></td>
     5734<td>&nbsp;</td>
     5735<td>[Add] Distinction of GEO/MEO satellites during BDS velocity determination</td>
     5736</tr>
     5737<tr class="row-even"><td></td>
     5738<td>&nbsp;</td>
     5739<td>[Bug] Velocity determination for geostationary BDS satellites</td>
     5740</tr>
     5741<tr class="row-odd"><td></td>
     5742<td>&nbsp;</td>
     5743<td>[Add] Set TOE from BDS week and second</td>
     5744</tr>
     5745<tr class="row-even"><td></td>
     5746<td>&nbsp;</td>
     5747<td>[Add] Use BDS observations and ephemerides in PPP SSR I mode</td>
     5748</tr>
     5749<tr class="row-odd"><td></td>
     5750<td>&nbsp;</td>
     5751<td>[Add] Considering that yaw angle restricted to -180 to +180 deg</td>
     5752</tr>
     5753<tr class="row-even"><td></td>
     5754<td>&nbsp;</td>
     5755<td>[Mod] Read local RINEX skeleton files</td>
     5756</tr>
     5757<tr class="row-odd"><td></td>
     5758<td>&nbsp;</td>
     5759<td>[Add] Update interval for VTEC in RTNET stream format</td>
     5760</tr>
     5761<tr class="row-even"><td></td>
     5762<td>&nbsp;</td>
     5763<td>[Bug] SBAS IODN</td>
     5764</tr>
     5765<tr class="row-odd"><td></td>
     5766<td>&nbsp;</td>
     5767<td>[Bug] Galileo week number</td>
     5768</tr>
     5769<tr class="row-even"><td></td>
     5770<td>&nbsp;</td>
     5771<td>[Add] Phase shift records in RINEX v3 headers</td>
     5772</tr>
     5773<tr class="row-odd"><td></td>
     5774<td>&nbsp;</td>
     5775<td>[Add] Output GLONASS slot numbers from scanning stream content</td>
     5776</tr>
     5777<tr class="row-even"><td></td>
     5778<td>&nbsp;</td>
     5779<td>[Add] Decoder interface for PPP SSR I+II messages for Galileo/QZSS/SBAS/BDS</td>
     5780</tr>
     5781<tr class="row-odd"><td></td>
     5782<td>&nbsp;</td>
     5783<td>[Mod] Renaming BDS first frequency from &#8216;1&#8217; to &#8216;2&#8217;</td>
     5784</tr>
     5785<tr class="row-even"><td></td>
     5786<td>&nbsp;</td>
     5787<td>[Add] RINEX QC, receiver/antenna information editable</td>
     5788</tr>
     5789<tr class="row-odd"><td></td>
     5790<td>&nbsp;</td>
     5791<td>[Add] Support of new RINEX header lines regarding phase shifts, GLONAQSS slots and GLONASS biases during file merging</td>
     5792</tr>
     5793<tr class="row-even"><td></td>
     5794<td>&nbsp;</td>
     5795<td>[Add] Switch to port 443 for skeleton file download from https website</td>
     5796</tr>
     5797<tr class="row-odd"><td></td>
     5798<td>&nbsp;</td>
     5799<td>[Mod] Default observation types for RINEX v3 files</td>
     5800</tr>
     5801<tr class="row-even"><td></td>
     5802<td>&nbsp;</td>
     5803<td>[Bug] RTCM v2 decoder</td>
     5804</tr>
     5805<tr class="row-odd"><td></td>
     5806<td>&nbsp;</td>
     5807<td>[Add] SINEX Troposphere file output</td>
     5808</tr>
     5809<tr class="row-even"><td></td>
     5810<td>&nbsp;</td>
     5811<td>[Add] Comments with respect to RINEX v3 to RINEX v2 observation file conversion [Add] String for Operating System in logfile output</td>
     5812</tr>
     5813<tr class="row-odd"><td></td>
     5814<td>&nbsp;</td>
     5815<td>[Add] Full integration of &#8216;rtcm3torinex&#8217;</td>
     5816</tr>
     5817<tr class="row-even"><td></td>
     5818<td>&nbsp;</td>
     5819<td>[Add] Extended command line help</td>
     5820</tr>
     5821<tr class="row-odd"><td></td>
     5822<td>&nbsp;</td>
     5823<td>[Add] Version 2.12.0 published in April 2016</td>
     5824</tr>
     5825<tr class="row-even"><td>Apr 2016</td>
     5826<td>Version 2.13</td>
     5827<td>[Add] Started work on new version in Apr 2016</td>
     5828</tr>
     5829</tbody>
     5830</table>
     5831</div>
     5832<div class="section" id="rtcm-standards">
     5833<span id="index-2"></span><h3>RTCM Standards<a class="headerlink" href="#rtcm-standards" title="Permalink to this headline">¶</a></h3>
     5834<p>The Radio Technical Commission for Maritime Services (RTCM) is an international non-profit scientific, professional and educational organization. Special Committees provide a forum in which governmental and non-governmental members work together to develop technical standards and consensus recommendations in regard to issues of particular concern. RTCM is engaged in the development of international standards for maritime radionavigation and radiocommunication systems. The output documents and reports prepared by RTCM Committees are published as RTCM Recommended Standards. Topics concerning Differential Global Navigation Satellite Systems (DGNSS) are handled by the Special Committee SC 104.</p>
     5835<p>Personal copies of RTCM Recommended Standards can be ordered through <a class="reference external" href="http://www.rtcm.org/orderinfo.php">http://www.rtcm.org/orderinfo.php</a>.</p>
     5836<div class="section" id="ntrip-version-1">
     5837<span id="index-3"></span><h4>Ntrip Version 1<a class="headerlink" href="#ntrip-version-1" title="Permalink to this headline">¶</a></h4>
     5838<p>&#8216;Networked Transport of RTCM via Internet Protocol&#8217; Version 1.0 (Ntrip) stands for an application-level protocol streaming Global Navigation Satellite System (GNSS) data over the Internet. Ntrip is a generic, stateless protocol based on the Hypertext Transfer Protocol HTTP/1.1. The HTTP objects are enhanced to GNSS data streams.</p>
     5839<p>Ntrip Version 1 is an RTCM standard designed for disseminating differential correction data (e.g. in the RTCM-104 format) or other kinds of GNSS streaming data to stationary or mobile users over the Internet, allowing simultaneous PC, Laptop, PDA, or receiver connections to a broadcasting host. Ntrip supports wireless Internet access through Mobile IP Networks like GSM, GPRS, EDGE, or UMTS.</p>
     5840<p>Ntrip is implemented in three system software components: Ntrip Clients, Ntrip Servers and Ntrip Broadcasters. The Ntrip Broadcaster is the actual HTTP server program whereas Ntrip Client and Ntrip Server are acting as HTTP clients.</p>
     5841<p>Ntrip is an open none-proprietary protocol. Major characteristics of Ntrip&#8217;s dissemination technique are:</p>
     5842<ul class="simple">
    48835843<li>Based on the popular HTTP streaming standard; comparatively easy to implement when having limited client and server platform resources available;</li>
    48845844<li>Application not limited to one particular plain or coded stream content; ability to distribute any kind of GNSS data;</li>
    … …  
    48875847<li>Enables streaming over mobile IP networks because of using TCP/IP.</li>
    48885848</ul>
    4889 </p>
    4890 
    4891 <p>
    4892 The Ntrip Broadcaster maintains a source-table containing information on available Ntrip streams, networks of Ntrip streams and Ntrip Broadcasters. The source-table is sent to an Ntrip Client on request. Source-table records are dedicated to one of the following: Data Streams (record type STR), Casters (record type CAS), or Networks of streams (record type NET).
    4893 </p>
    4894 
    4895 <p>
    4896 Source-table records of type STR contain the following data fields: 'mountpoint', 'identifier', 'format', 'format-details', 'carrier', 'nav-system', 'network', 'country', 'latitude', 'longitude', 'nmea', 'solution', 'generator', 'compr-encryp', 'authentication', 'fee', 'bitrate', 'misc'.
    4897 </p>
    4898 <p>
    4899 Source-table records of type NET contain the following data fields: 'identifier', 'operator', 'authentication', 'fee', 'web-net', 'web-str', 'web-reg', 'misc'.
    4900 </p>
    4901 <p>
    4902 Source-table records of type CAS contain the following data fields: 'host', 'port', 'identifier', 'operator', 'nmea', 'country', 'latitude', 'longitude', 'misc'.
    4903 </p>
    4904 
    4905 <p><h4>3.2.2 <a name="ntrip2">Ntrip Version 2</h4></p>
    4906 
    4907 <p>
    4908 The major changes of Ntrip Version 2 compared to Version 1.0 are:
    4909 </p>
    4910 
    4911 <ul>
     5849<p>The Ntrip Broadcaster maintains a source-table containing information on available Ntrip streams, networks of Ntrip streams and Ntrip Broadcasters. The source-table is sent to an Ntrip Client on request. Source-table records are dedicated to one of the following: Data Streams (record type STR), Casters (record type CAS), or Networks of streams (record type NET).</p>
     5850<p>Source-table records of type STR contain the following data fields: &#8216;mountpoint&#8217;, &#8216;identifier&#8217;, &#8216;format&#8217;, &#8216;format-details&#8217;, &#8216;carrier&#8217;, &#8216;nav-system&#8217;, &#8216;network&#8217;, &#8216;country&#8217;, &#8216;latitude&#8217;, &#8216;longitude&#8217;, &#8216;nmea&#8217;, &#8216;solution&#8217;, &#8216;generator&#8217;, &#8216;compr-encryp&#8217;, &#8216;authentication&#8217;, &#8216;fee&#8217;, &#8216;bitrate&#8217;, &#8216;misc&#8217;.</p>
     5851<p>Source-table records of type NET contain the following data fields: &#8216;identifier&#8217;, &#8216;operator&#8217;, &#8216;authentication&#8217;, &#8216;fee&#8217;, &#8216;web-net&#8217;, &#8216;web-str&#8217;, &#8216;web-reg&#8217;, &#8216;misc&#8217;.</p>
     5852<p>Source-table records of type CAS contain the following data fields: &#8216;host&#8217;, &#8216;port&#8217;, &#8216;identifier&#8217;, &#8216;operator&#8217;, &#8216;nmea&#8217;, &#8216;country&#8217;, &#8216;latitude&#8217;, &#8216;longitude&#8217;, &#8216;misc&#8217;.</p>
     5853</div>
     5854<div class="section" id="ntrip-version-2">
     5855<span id="index-4"></span><h4>Ntrip Version 2<a class="headerlink" href="#ntrip-version-2" title="Permalink to this headline">¶</a></h4>
     5856<p>The major changes of Ntrip Version 2 compared to Version 1.0 are:</p>
     5857<ul class="simple">
    49125858<li>Cleared and fixed design problems and HTTP protocol violations;</li>
    49135859<li>Replaced nonstandard directives;</li>
    … …  
    49175863<li>RTSP communication.</li>
    49185864</ul>
    4919 
    4920 <p>Ntrip Version 2 allows to communicate either in TCP/IP mode or in RTSP/RTP mode or in UDP mode whereas Version 1 is limited to TCP/IP only. It furthermore allows using the Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL) cryptographic protocols for secure Ntrip communication over the Internet.
    4921 </p>
    4922 
    4923 <p><h4>3.2.3 <a name="rtcm2">RTCM Version 2</h4></p>
    4924 <p>
    4925 Transmitting GNSS carrier phase data can be done through RTCM Version 2 messages. Please note that only RTCM Version 2.2 and 2.3 streams may include GLONASS data. Messages that may be of interest here are:
    4926 </p>
    4927 
    4928 <ul>
    4929 <li>
    4930 Type 1 message is the range correction message and is the primary message in code-phase differential positioning (DGPS). It is computed in the base receiver by computing the error in the range measurement for each tracked SV.
    4931 </li>
    4932 <li>
    4933 Type 2 message is automatically generated when a new set of satellite ephemeris is downloaded to the base receiver. It is the computed difference between the old ephemeris and the new ephemeris. Type 2 messages are used when the base station is transmitting Type 1 messages.
    4934 </li>
    4935 <li>
    4936 Type 3 and 22 messages are the base station position and the antenna offset. Type 3 and 22 are used in RTK processing to perform antenna reduction.
    4937 </li>
    4938 <li>
    4939 Type 6 message is a null frame filler message that is provided for data links that require continuous transmission of data, even if there are no corrections to send. As many Type 6 messages are sent as required to fill in the gap between two correction messages (type 1). Message 6 is not sent in burst mode.
    4940 </li>
    4941 <li>
    4942 Type 9 message serves the same purpose as Type 1, but does not require a complete satellite set. As a result, Type 9 messages require a more stable clock than a station transmitting Type 1 's, because the satellite corrections have different time references.
    4943 </li>
    4944 <li>
    4945 Type 16 message is simply a text message entered by the user that is transmitted from the base station to the rover. It is used with code-phase differential.
    4946 </li>
    4947 <li>
    4948 Type 18 and 20 messages are RTK uncorrected carrier phase data and carrier phase corrections.
    4949 </li>
    4950 <li>
    4951 Type 19 and 21 messages are the uncorrected pseudo-range measurements and pseudo-range corrections used in RTK.
    4952 </li>
    4953 <li>
    4954 Type 23 message provides the information on the antenna type used on the reference station.
    4955 </li>
    4956 <li>
    4957 Type 24 message carries the coordinates of the installed antenna's ARP in the GNSS coordinate system coordinates.
    4958 </li>
    4959 </ul>
    4960 
    4961 <p><h4>3.2.4 <a name="rtcm3">RTCM Version 3</h4></p>
    4962 <p>
    4963 RTCM Version 3 has been developed as a more efficient alternative to RTCM Version 2. Service providers and vendors have asked for a standard that would be more efficient, easy to use, and more easily adaptable to new situations. The main complaint was that the Version 2 parity scheme was wasteful of bandwidth. Another complaint was that the parity is not independent from word to word. Still another was that even with so many bits devoted to parity, the actual integrity of the message was not as high as it should be. Plus, 30-bit words are awkward to handle. The Version 3 standard is intended to correct these weaknesses.
    4964 </p>
    4965 <p>
    4966 RTCM Version 3 defines a number of message types. Messages that may be of interest here are:
    4967 <ul>
     5865<p>Ntrip Version 2 allows to communicate either in TCP/IP mode or in RTSP/RTP mode or in UDP mode whereas Version 1 is limited to TCP/IP only. It furthermore allows using the Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL) cryptographic protocols for secure Ntrip communication over the Internet.</p>
     5866</div>
     5867<div class="section" id="rtcm-version-2">
     5868<span id="index-5"></span><h4>RTCM Version 2<a class="headerlink" href="#rtcm-version-2" title="Permalink to this headline">¶</a></h4>
     5869<p>Transmitting GNSS carrier phase data can be done through RTCM Version 2 messages. Please note that only RTCM Version 2.2 and 2.3 streams may include GLONASS data. Messages that may be of interest here are:</p>
     5870<ul class="simple">
     5871<li>Type 1 message is the range correction message and is the primary message in code-phase differential positioning (DGPS). It is computed in the base receiver by computing the error in the range measurement for each tracked SV.</li>
     5872<li>Type 2 message is automatically generated when a new set of satellite ephemeris is downloaded to the base receiver. It is the computed difference between the old ephemeris and the new ephemeris. Type 2 messages are used when the base station is transmitting Type 1 messages.</li>
     5873<li>Type 3 and 22 messages are the base station position and the antenna offset. Type 3 and 22 are used in RTK processing to perform antenna reduction.</li>
     5874<li>Type 6 message is a null frame filler message that is provided for data links that require continuous transmission of data, even if there are no corrections to send. As many Type 6 messages are sent as required to fill in the gap between two correction messages (type 1). Message 6 is not sent in burst mode.</li>
     5875<li>Type 9 message serves the same purpose as Type 1, but does not require a complete satellite set. As a result, Type 9 messages require a more stable clock than a station transmitting Type 1 &#8216;s, because the satellite corrections have different time references.</li>
     5876<li>Type 16 message is simply a text message entered by the user that is transmitted from the base station to the rover. It is used with code-phase differential.</li>
     5877<li>Type 18 and 20 messages are RTK uncorrected carrier phase data and carrier phase corrections.</li>
     5878<li>Type 19 and 21 messages are the uncorrected pseudo-range measurements and pseudo-range corrections used in RTK.</li>
     5879<li>Type 23 message provides the information on the antenna type used on the reference station.</li>
     5880<li>Type 24 message carries the coordinates of the installed antenna&#8217;s ARP in the GNSS coordinate system coordinates.</li>
     5881</ul>
     5882</div>
     5883<div class="section" id="rtcm-version-3">
     5884<span id="index-6"></span><h4>RTCM Version 3<a class="headerlink" href="#rtcm-version-3" title="Permalink to this headline">¶</a></h4>
     5885<p>RTCM Version 3 has been developed as a more efficient alternative to RTCM Version 2. Service providers and vendors have asked for a standard that would be more efficient, easy to use, and more easily adaptable to new situations. The main complaint was that the Version 2 parity scheme was wasteful of bandwidth. Another complaint was that the parity is not independent from word to word. Still another was that even with so many bits devoted to parity, the actual integrity of the message was not as high as it should be. Plus, 30-bit words are awkward to handle. The Version 3 standard is intended to correct these weaknesses.</p>
     5886<p>RTCM Version 3 defines a number of message types. Messages that may be of interest here are:</p>
     5887<ul class="simple">
    49685888<li>Type 1001, GPS L1 code and phase.</li>
    49695889<li>Type 1002, GPS L1 code and phase and ambiguities and carrier-to-noise ratio.</li>
    … …  
    49865906<li>Type 1045, Galileo F/NAV ephemeris.</li>
    49875907<li>Type 1046, Galileo I/NAV ephemeris.</li>
    4988 <li>Type   63, BeiDou ephemeris, tentative.</li>
    4989 <li>Type 4088 and 4095, Proprietary messages.
    4990 </li>
    4991 </ul>
    4992 </p>
    4993 
    4994 <p>
    4995 The following are so-called 'State Space Representation' (SSR) messages:
    4996 <ul>
     5908<li>Type 63, BeiDou ephemeris, tentative.</li>
     5909<li>Type 4088 and 4095, Proprietary messages.</li>
     5910</ul>
     5911<p>The following are so-called &#8216;State Space Representation&#8217; (SSR) messages:</p>
     5912<ul class="simple">
    49975913<li>Type 1057, GPS orbit corrections to Broadcast Ephemeris</li>
    49985914<li>Type 1058, GPS clock corrections to Broadcast Ephemeris</li>
    … …  
    50005916<li>Type 1060, Combined orbit and clock corrections to GPS Broadcast Ephemeris</li>
    50015917<li>Type 1061, GPS User Range Accuracy (URA)</li>
    5002 <li>Type 1062, High-rate GPS clock corrections to Broadcast Ephemeris<br><br></li>
    5003 
     5918<li>Type 1062, High-rate GPS clock corrections to Broadcast Ephemeris</li>
    50045919<li>Type 1063, GLONASS orbit corrections to Broadcast Ephemeris</li>
    50055920<li>Type 1064, GLONASS clock corrections to Broadcast Ephemeris</li>
    … …  
    50075922<li>Type 1066, Combined orbit and clock corrections to GLONASS Broadcast Ephemeris</li>
    50085923<li>Type 1067, GLONASS User Range Accuracy (URA)</li>
    5009 <li>Type 1068, High-rate GLONASS clock corrections to Broadcast Ephemeris<br><br></li>
    5010 
     5924<li>Type 1068, High-rate GLONASS clock corrections to Broadcast Ephemeris</li>
    50115925<li>Type 1240, Galileo orbit corrections to Broadcast Ephemeris</li>
    50125926<li>Type 1241, Galileo clock corrections to Broadcast Ephemeris</li>
    … …  
    50145928<li>Type 1243, Combined orbit and clock corrections to Galileo Broadcast Ephemeris</li>
    50155929<li>Type 1244, Galileo User Range Accuracy (URA)</li>
    5016 <li>Type 1245, High-rate Galileo clock corrections to Broadcast Ephemeris<br><br></li>
    5017 
     5930<li>Type 1245, High-rate Galileo clock corrections to Broadcast Ephemeris</li>
    50185931<li>Type 1246, QZSS orbit corrections to Broadcast Ephemeris</li>
    50195932<li>Type 1247, QZSS clock corrections to Broadcast Ephemeris</li>
    … …  
    50215934<li>Type 1249, Combined orbit and clock corrections to QZSS Broadcast Ephemeris</li>
    50225935<li>Type 1250, QZSS User Range Accuracy (URA)</li>
    5023 <li>Type 1251, High-rate QZSS clock corrections to Broadcast Ephemeris<br><br></li>
    5024 
     5936<li>Type 1251, High-rate QZSS clock corrections to Broadcast Ephemeris</li>
    50255937<li>Type 1252, SBAS orbit corrections to Broadcast Ephemeris</li>
    50265938<li>Type 1253, SBAS clock corrections to Broadcast Ephemeris</li>
    … …  
    50285940<li>Type 1255, Combined orbit and clock corrections to SBAS Broadcast Ephemeris</li>
    50295941<li>Type 1256, SBAS User Range Accuracy (URA)</li>
    5030 <li>Type 1257, High-rate SBAS clock corrections to Broadcast Ephemeris<br><br></li>
    5031 
     5942<li>Type 1257, High-rate SBAS clock corrections to Broadcast Ephemeris</li>
    50325943<li>Type 1258, BDS orbit corrections to Broadcast Ephemeris</li>
    50335944<li>Type 1259, BDS clock corrections to Broadcast Ephemeris</li>
    … …  
    50355946<li>Type 1261, Combined orbit and clock corrections to BDS Broadcast Ephemeris</li>
    50365947<li>Type 1262, BDS User Range Accuracy (URA)</li>
    5037 <li>Type 1263, High-rate BDS clock corrections to Broadcast Ephemeris<br><br></li>
    5038 
     5948<li>Type 1263, High-rate BDS clock corrections to Broadcast Ephemeris\</li>
    50395949<li>Type 1264 SSR Ionosphere VTEC Spherical Harmonics</li>
    50405950<li>Type 1265 SSR GPS Satellite Phase Bias</li>
    … …  
    50455955<li>Type 1270 SSR Satellite BDS Phase Bias</li>
    50465956</ul>
    5047 </p>
    5048 
    5049 <p>
    5050 The following are so-called 'Multiple Signal Messages' (MSM):
    5051 <ul>
     5957<p>The following are so-called &#8216;Multiple Signal Messages&#8217; (MSM):</p>
     5958<ul class="simple">
    50525959<li>Type 1071, Compact GPS pseudo-ranges</li>
    50535960<li>Type 1072, Compact GPS carrier phases</li>
    … …  
    50565963<li>Type 1075, Full GPS pseudo-ranges, carrier phases, Doppler and signal strength</li>
    50575964<li>Type 1076, Full GPS pseudo-ranges and carrier phases plus signal strength (high resolution)</li>
    5058 <li>Type 1077, Full GPS pseudo-ranges, carrier phases, Doppler and signal strength (high resolution)<br><br></li>
     5965<li>Type 1077, Full GPS pseudo-ranges, carrier phases, Doppler and signal strength (high resolution)</li>
    50595966<li>Type 1081, Compact GLONASS pseudo-ranges</li>
    50605967<li>Type 1082, Compact GLONASS carrier phases</li>
    … …  
    50635970<li>Type 1085, Full GLONASS pseudo-ranges, carrier phases, Doppler and signal strength</li>
    50645971<li>Type 1086, Full GLONASS pseudo-ranges and carrier phases plus signal strength (high resolution)</li>
    5065 <li>Type 1087, Full GLONASS pseudo-ranges, carrier phases, Doppler and signal strength (high resolution)<br><br></li>
     5972<li>Type 1087, Full GLONASS pseudo-ranges, carrier phases, Doppler and signal strength (high resolution)</li>
    50665973<li>Type 1091, Compact Galileo pseudo-ranges</li>
    50675974<li>Type 1092, Compact Galileo carrier phases</li>
    … …  
    50705977<li>Type 1095, Full Galileo pseudo-ranges, carrier phases, Doppler and signal strength</li>
    50715978<li>Type 1096, Full Galileo pseudo-ranges and carrier phases plus signal strength (high resolution)</li>
    5072 <li>Type 1097, Full Galileo pseudo-ranges, carrier phases, Doppler and signal strength (high resolution)<br><br></li>
     5979<li>Type 1097, Full Galileo pseudo-ranges, carrier phases, Doppler and signal strength (high resolution)</li>
    50735980<li>Type 1121, Compact BeiDou pseudo-ranges</li>
    50745981<li>Type 1122, Compact BeiDou carrier phases</li>
    … …  
    50775984<li>Type 1125, Full BeiDou pseudo-ranges, carrier phases, Doppler and signal strength</li>
    50785985<li>Type 1126, Full BeiDou pseudo-ranges and carrier phases plus signal strength (high resolution)</li>
    5079 <li>Type 1127, Full BeiDou pseudo-ranges, carrier phases, Doppler and signal strength (high resolution)<br><br></li>
     5986<li>Type 1127, Full BeiDou pseudo-ranges, carrier phases, Doppler and signal strength (high resolution)</li>
    50805987<li>Type 1111, Compact QZSS pseudo-ranges</li>
    50815988<li>Type 1112, Compact QZSS carrier phases</li>
    … …  
    50845991<li>Type 1115, Full QZSS pseudo-ranges, carrier phases, Doppler and signal strength</li>
    50855992<li>Type 1116, Full QZSS pseudo-ranges and carrier phases plus signal strength (high resolution)</li>
    5086 <li>Type 1117, Full QZSS pseudo-ranges, carrier phases, Doppler and signal strength (high resolution)<br><br></li>
    5087 
    5088 </ul>
    5089 </p>
    5090 
    5091 <p>
    5092 The following are proposed 'Multiple Signal Messages' (MSM) under discussion for standardization:
    5093 <ul>
     5993<li>Type 1117, Full QZSS pseudo-ranges, carrier phases, Doppler and signal strength (high resolution)</li>
     5994</ul>
     5995<p>The following are proposed &#8216;Multiple Signal Messages&#8217; (MSM) under discussion for standardization:</p>
     5996<ul class="simple">
    50945997<li>Type 1101, Compact SBAS pseudo-ranges</li>
    50955998<li>Type 1102, Compact SBAS carrier phases</li>
    … …  
    50986001<li>Type 1105, Full SBAS pseudo-ranges, carrier phases, Doppler and signal strength</li>
    50996002<li>Type 1106, Full SBAS pseudo-ranges and carrier phases plus signal strength (high resolution)</li>
    5100 <li>Type 1107, Full SBAS pseudo-ranges, carrier phases, Doppler and signal strength (high resolution)<br><br></li>
    5101 </ul>
    5102 </p>
    5103 
    5104 <p><h4>3.3 <a name="confList">Command Line Help</h3></p>
    5105 
    5106 <p>
    5107 Command line option '--help' provides a complete list of all configuration parameters which can be specified via BNC's Command Line Interface (CLI). Note that command line options overrule configuration options specified in the configuration file. The following is the output produced when running BNC with command line option '--help':
    5108 </p>
    5109 <pre>
    5110 <b>Usage:</b>
    5111    bnc --help (MS Windows: bnc.exe --help | more)
    5112        --nw
    5113        --version (MS Windows: bnc.exe --version | more)
    5114        --display {name}
    5115        --conf {confFileName}
    5116        --file {rawFileName}
    5117        --key  {keyName} {keyValue}
    5118 
    5119 <b>Network Panel keys:</b>
    5120    proxyHost       {Proxy host, name or IP address [character string]}
    5121    proxyPort       {Proxy port [integer number]}
    5122    sslCaCertPath   {Full path to SSL certificates [character string]}
    5123    sslIgnoreErrors {Ignore SSL authorization errors [integer number: 0=no,2=yes]}
    5124 
    5125 <b>General Panel keys:</b>
    5126    logFile          {Logfile, full path [character string]}
    5127    rnxAppend        {Append files [integer number: 0=no,2=yes]}
    5128    onTheFlyInterval {Configuration reload interval [character string: 1 day|1 hour|5 min|1 min]}
    5129    autoStart        {Auto start [integer number: 0=no,2=yes]}
    5130    rawOutFile       {Raw output file, full path [character string]}
    5131 
    5132 <b>RINEX Observations Panel keys:</b>
    5133    rnxPath        {Directory [character string]}
    5134    rnxIntr        {File interval [character string: 1 min|2 min|5 min|10 min|15 min|30 min|1 hour|1 day]}
    5135    rnxSampl       {File sampling rate [integer number of seconds: 0,5|10|15|20|25|30|35|40|45|50|55|60]}
    5136    rnxSkel        {RINEX skeleton file extension [character string]}
    5137    rnxOnlyWithSKL {Using RINEX skeleton file is mandatory [integer number: 0=no,2=yes]}
    5138    rnxScript      {File upload script, full path [character string]}
    5139    rnxV2Priority  {Priority of signal attributes [character string, list separated by blank character, example: G:CWPX_? R:CP]}
    5140    rnxV3          {Produce version 3 file content [integer number: 0=no,2=yes]}
    5141    rnxV3filenames {Produce version 3 filenames [integer number: 0=no,2=yes]}
    5142 
    5143 <b>RINEX Ephemeris Panel keys:</b>
    5144    ephPath        {Directory [character string]}
    5145    ephIntr        {File interval [character string: 1 min|2 min|5 min|10 min|15 min|30 min|1 hour|1 day]}
    5146    ephOutPort     {Output port [integer number]}
    5147    ephV3          {Produce version 3 file content [integer number: 0=no,2=yes]}
    5148    ephV3filenames {Produce version 3 filenames [integer number: 0=no,2=yes]}
    5149 
    5150 <b>RINEX Editing and QC Panel keys:</b>
    5151    reqcAction            {Action specification [character string:  Blank|Edit/Concatenate|Analyze]}
    5152    reqcObsFile           {Input observations file(s), full path [character string, comma separated list in quotation marks]}
    5153    reqcNavFile           {Input navigation file(s), full path [character string, comma separated list in quotation marks]}
    5154    reqcOutObsFile        {Output observations file, full path [character string]}
    5155    reqcOutNavFile        {Output navigation file, full path [character string]}
    5156    reqcOutLogFile        {Output logfile, full path [character string]}
    5157    reqcLogSummaryOnly    {Output only summary of logfile [integer number: 0=no,2=yes]}
    5158    reqcSkyPlotSignals    {Observation signals [character string, list separated by blank character, example: C:2&7 E:1&5 G:1&2 J:1&2 R:1&2 S:1&5]}
    5159    reqcPlotDir           {QC plots directory [character string]}
    5160    reqcRnxVersion        {RINEX version [integer number: 2|3]}
    5161    reqcSampling          {RINEX output file sampling rate [integer number of seconds: 0|5|10|15|20|25|30|35|40|45|50|55|60]}
    5162    reqcV2Priority        {Version 2 priority of signal attributes [character string, list separated by blank character, example: G:CWPX_? R:CP]}
    5163    reqcStartDateTime     {Start time [character string, example: 1967-11-02T00:00:00]}
    5164    reqcEndDateTime       {Stop time [character string, example: 2099-01-01T00:00:00 }
    5165    reqcRunBy             {Operators name [character string]}
    5166    reqcUseObsTypes       {Use observation types [character string, list separated by blank character, example: G:C1C G:L1C R:C1C RC1P]}
    5167    reqcComment           {Additional comments [character string]}
    5168    reqcOldMarkerName     {Old marker name [character string]}
    5169    reqcNewMarkerName     {New marker name [character string]}
    5170    reqcOldAntennaName    {Old antenna name [character string]}
    5171    reqcNewAntennaName    {New antenna name [character string]}
    5172    reqcOldAntennaNumber  {Old antenna number [character string]}
    5173    reqcNewAntennaNumber  {New antenna number [character string]}
    5174    reqcOldAntennadN      {Old north eccentricity [character string]}
    5175    reqcNewAntennadN      {New north eccentricity [character string]}
    5176    reqcOldAntennadE      {Old east eccentricity [character string]}
    5177    reqcNewAntennadE      {New east eccentricity [character string]}
    5178    reqcOldAntennadU      {Old up eccentricity [character string]}
    5179    reqcNewAntennadU      {New up eccentricity [character string]}
    5180    reqcOldReceiverName   {Old receiver name [character string]}
    5181    reqcNewReceiverName   {New receiver name [character string]}
    5182    reqcOldReceiverNumber {Old receiver number [character string]}
    5183    reqcNewReceiverNumber {New receiver number [character string]}
    5184 
    5185 <b>SP3 Comparison Panel keys:</b>
    5186    sp3CompFile       {SP3 input files, full path [character string, comma separated list in quotation marks]}
    5187    sp3CompExclude    {Satellite exclusion list [character string, comma separated list in quotation marks, example: G04,G31,R]}
    5188    sp3CompOutLogFile {Output logfile, full path [character string]}
    5189 
    5190 <b>Broadcast Corrections Panel keys:</b>
    5191    corrPath {Directory for saving files in ASCII format [character string]}
    5192    corrIntr {File interval [character string: 1 min|2 min|5 min|10 min|15 min|30 min|1 hour|1 day]}
    5193    corrPort {Output port [integer number]}
    5194 
    5195 <b>Feed Engine Panel keys:</b>
    5196    outPort  {Output port, synchronized [integer number]}
    5197    outWait  {Wait for full observation epoch [integer number of seconds: 1-30]}
    5198    outSampl {Sampling rate [integer number of seconds: 0|5|10|15|20|25|30|35|40|45|50|55|60]}
    5199    outFile  {Output file, full path [character string]}
    5200    outUPort {Output port, unsynchronized [integer number]}
    5201 
    5202 <b>Serial Output Panel keys:</b>
    5203    serialMountPoint         {Mountpoint [character string]}
    5204    serialPortName           {Port name [character string]}
    5205    serialBaudRate           {Baud rate [integer number: 110|300|600|1200|2400|4800|9600|19200|38400|57600|115200]}
    5206    serialFlowControl        {Flow control [character string: OFF|XONXOFF|HARDWARE}
    5207    serialDataBits           {Data bits [integer number: 5|6|7|8]}
    5208    serialParity             {Parity [character string: NONE|ODD|EVEN|SPACE]}
    5209    serialStopBits           {Stop bits [integer number: 1|2]}
    5210    serialAutoNMEA           {NMEA specification [character string: no|Auto|Manual GPGGA|Manual GNGGA]}
    5211    serialFileNMEA           {NMEA filename, full path [character string]}
    5212    serialHeightNMEA         {Height [floating-point number]}
    5213    serialHeightNMEASampling {Sampling rate [integer number of seconds: 0|10|20|30|...|280|290|300]}
    5214 
    5215 <b>Outages Panel keys:</b>
    5216    adviseObsRate {Stream observation rate [character string: 0.1 Hz|0.2 Hz|0.5 Hz|1 Hz|5 Hz]}
    5217    adviseFail    {Failure threshold [integer number of minutes: 0-60]}
    5218    adviseReco    {Recovery threshold [integer number of minutes: 0-60]}
    5219    adviseScript  {Advisory script, full path [character string]}
    5220 
    5221 <b>Miscellaneous Panel keys:</b>
    5222    miscMount    {Mountpoint [character string]}
    5223    miscIntr     {Interval for logging latency [character string: Blank|2 sec|10 sec|1 min|5 min|15 min|1 hour|6 hours|1 day]}
    5224    miscScanRTCM {Scan for RTCM message numbers [integer number: 0=no,2=yes]}
    5225    miscPort     {Output port [integer number]}
    5226 
    5227 <b>PPP Client Panel 1 keys:</b>
    5228    PPP/dataSource  {Data source [character string: Blank|Real-Time Streams|RINEX Files]}
    5229    PPP/rinexObs    {RINEX observation file, full path [character string]}
    5230    PPP/rinexNav    {RINEX navigation file, full path [character string]}
    5231    PPP/corrMount   {Corrections mountpoint [character string]}
    5232    PPP/corrFile    {Corrections file, full path [character string]}
    5233    PPP/antexFile   {ANTEX file, full path [character string]}
    5234    PPP/crdFile     {Coordinates file, full path [character string]}
    5235    PPP/v3filenames {Produce version 3 filenames, [integer number: 0=no,2=yes]}
    5236    PPP/logPath     {Directory for PPP log files [character string]}
    5237    PPP/nmeaPath    {Directory for NMEA output files [character string]}
    5238    PPP/snxtroPath  {Directory for SINEX troposphere output files [character string]}
    5239    PPP/snxtroIntr  {SINEX troposphere file interval [character string: 1 min|2 min|5 min|10 min|15 min|30 min|1 hour|1 day]}
    5240    PPP/snxtroSampl {SINEX troposphere file sampling rate [integer number of seconds: 0|30|60|90|120|150|180|210|240|270|300]}
    5241    PPP/snxtroAc    {SINEX troposphere Analysis Center [character string]}
    5242    PPP/snxtroSol   {SINEX troposphere solution ID [character string]}
    5243 
    5244 <b>PPP Client Panel 2 keys:</b>
    5245    PPP/staTable {Station specifications table [character string, semicolon separated list, each element in quotation marks, example:
    5246                 "FFMJ1,100.0,100.0,100.0,100.0,100.0,100.0,0.1,3e-6,7777;CUT07,100.0,100.0,100.0,100.0,100.0,100.0,0.1,3e-6,7778"]}
    5247 
    5248 <b>PPP Client Panel 3 keys:</b>
    5249    PPP/lcGPS        {Select linear combination from GPS code or phase data [character string; P3|P3&L3]}
    5250    PPP/lcGLONASS    {Select linear combination from GLONASS code or phase data [character string: no|P3|L3|P3&L3]}
    5251    PPP/lcGalileo    {Select linear combination from Galileo code or phase data [character string: no|P3|L3|P3&L3]}
    5252    PPP/lcBDS        {Select linear combination from BDS code or phase data [character string: no|P3|L3|P3&L3]}
    5253    PPP/sigmaC1      {Sigma for code observations in meters [floating-point number]}
    5254    PPP/sigmaL1      {Sigma for phase observations in meters [floating-point number]}
    5255    PPP/maxResC1     {Maximal residuum for code observations in meters [floating-point number]}
    5256    PPP/maxResL1     {Maximal residuum for phase observations in meters [floating-point number]}
    5257    PPP/eleWgtCode   {Elevation dependent waiting of code observations [integer number: 0=no,2=yes]}
    5258    PPP/eleWgtPhase  {Elevation dependent waiting of phase observations [integer number: 0=no,2=yes]}
    5259    PPP/minObs       {Minimum number of observations [integer number: 4|5|6]}
    5260    PPP/minEle       {Minimum satellite elevation in degrees [integer number: 0-20]}
    5261    PPP/corrWaitTime {Wait for clock corrections [integer number of seconds: no|1-20]}
    5262    PPP/seedingTime  {Seeding time span for Quick Start [integer number of seconds]}
    5263 
    5264 <b>PPP Client Panel 4 keys:</b>
    5265    PPP/plotCoordinates  {Mountpoint for time series plot [character string]}
    5266    PPP/audioResponse    {Audio response threshold in meters [floating-point number]}
    5267    PPP/useOpenStreetMap {OSM track map [character string: true|false]}
    5268    PPP/useGoogleMap     {Google track map [character string: true|false]}
    5269    PPP/mapWinDotSize    {Size of dots on map [integer number: 0-10]}
    5270    PPP/mapWinDotColor   {Color of dots and cross hair on map [character string: red|yellow]}
    5271    PPP/mapSpeedSlider   {Offline processing speed for mapping [integer number: 1-100]}
    5272 
    5273 <b>Combine Corrections Panel keys:</b>
    5274    cmbStreams      {Correction streams table [character string, semicolon separated list, each element in quotation marks, example:
    5275                    "IGS01 ESA 1.0;IGS03 BKG 1.0"]}
    5276    cmbMethodFilter {Combination approach [character string: Single-Epoch|Filter]
    5277    cmbMaxres       {Clock outlier residuum threshold in meters [floating-point number]
    5278    cmbSampl        {Clock sampling rate [integer number of seconds: 10|20|30|40|50|60]}
    5279    cmbUseGlonass   {Use GLONASS in combination [integer number: 0=no,2=yes]
    5280 
    5281 <b>Upload Corrections Panel keys:</b>
    5282    uploadMountpointsOut   {Upload corrections table [character string, semicolon separated list, each element in quotation marks, example:
    5283                           "www.igs-ip.net,2101,IGS01,pass,IGS08,0,/home/user/BNC$[GPSWD}.sp3,/home/user/BNC$[GPSWD}.clk,258,1,0;
    5284                            www.euref-ip.net,2101,EUREF01,pass,ETRF2000,0,,,258,2,0"]}
    5285    uploadIntr             {Length of SP3 and Clock RINEX file interval [character string: 1 min|2 min|5 min|10 min|15 min|30 min|1 hour|1 day]}
    5286    uploadSamplRtcmEphCorr {Orbit corrections stream sampling rate [integer number of seconds: 0|5|10|15|20|25|30|35|40|45|50|55|60]}
    5287    uploadSamplSp3         {SP3 file sampling rate [integer number of minutes: 0-15]}
    5288    uploadSamplClkRnx      {Clock RINEX file sampling rate [integer number of seconds: 0|5|10|15|20|25|30|35|40|45|50|55|60]}
    5289 
    5290 <b>Custom Trafo keys:</b>
    5291    trafo_dx  {Translation X in meters [floating-point number]
    5292    trafo_dy  {Translation Y in meters [floating-point number]
    5293    trafo_dz  {Translation Z in meters [floating-point number]
    5294    trafo_dxr {Translation change X in meters per year [floating-point number]
    5295    trafo_dyr {Translation change Y in meters per year [floating-point number]
    5296    trafo_dzr {Translation change Z in meters per year [floating-point number]
    5297    trafo_ox  {Rotation X in arcsec [floating-point number]}
    5298    trafo_oy  {Rotation Y in arcsec [floating-point number]}
    5299    trafo_oz  {Rotation Z in arcsec [floating-point number]}
    5300    trafo_oxr {Rotation change X in arcsec per year [floating-point number]}
    5301    trafo_oyr {Rotation change Y in arcsec per year [floating-point number]}
    5302    trafo_ozr {Rotation change Z in arcsec per year [floating-point number]}
    5303    trafo_sc  {Scale [10^-9, floating-point number]}
    5304    trafo_scr {Scale change [10^-9 per year, floating-point number]}
    5305    trafo_t0  {Reference year [integer number]}
    5306 
    5307 <b>Upload Ephemeris Panel keys:</b>
    5308    uploadEphHost       {Broadcaster host, name or IP address [character string]}
    5309    uploadEphPort       {Broadcaster port [integer number]}
    5310    uploadEphMountpoint {Mountpoint [character string]}
    5311    uploadEphPassword   {Stream upload password [character string]}
    5312    uploadEphSample     {Stream upload sampling rate [integer number of seconds: 5|10|15|20|25|30|35|40|45|50|55|60]}
    5313 
    5314 <b>Add Stream keys:</b>
    5315    mountPoints   {Mountpoints [character string, semicolon separated list, example:
    5316                  "//user:pass@www.igs-ip.net:2101/FFMJ1 RTCM_3.1 DEU 50.09 8.66 no 2;
    5317                  //user:pass@www.igs-ip.net:2101/FFMJ2 RTCM_3.1 DEU 50.09 8.66 no 2"}
    5318    ntripVersion  {Ntrip Version [character string: 1|2|2s|R|U]}
    5319    casterUrlList {Visited Broadcasters [character string, comma separated list]}
    5320 
    5321 <b>Appearance keys:</b>
    5322    startTab  {Index of top panel to be presented at start time [integer number: 0-17]}
    5323    statusTab {Index of bottom panel to be presented at start time [integer number: 0-3]}
    5324    font      {Font specification [character string in quotation marks, example: "Helvetica,14,-1,5,50,0,0,0,0,0"]}
    5325 
    5326 <b>Note:</b>
    5327 The syntax of some command line configuration options slightly differs from that
     6003<li>Type 1107, Full SBAS pseudo-ranges, carrier phases, Doppler and signal strength (high resolution)\</li>
     6004</ul>
     6005</div>
     6006</div>
     6007<div class="section" id="command-line-help">
     6008<span id="index-7"></span><h3>Command Line Help<a class="headerlink" href="#command-line-help" title="Permalink to this headline">¶</a></h3>
     6009<p>Command line option <code class="docutils literal"><span class="pre">--help</span></code> provides a complete list of all configuration parameters which can be specified via BNC&#8217;s Command Line Interface (CLI). Note that command line options overrule configuration options specified in the configuration file. The following is the output produced when running BNC with command line option &#8216;&#8211;help&#8217;:</p>
     6010<div class="section" id="usage">
     6011<h4>Usage<a class="headerlink" href="#usage" title="Permalink to this headline">¶</a></h4>
     6012<div class="highlight-bash"><div class="highlight"><pre>bnc --help <span class="o">(</span>MS Windows: bnc.exe --help <span class="p">|</span> more<span class="o">)</span>
     6013    --nw
     6014    --version <span class="o">(</span>MS Windows: bnc.exe --version <span class="p">|</span> more<span class="o">)</span>
     6015    --display <span class="o">{</span>name<span class="o">}</span>
     6016    --conf <span class="o">{</span>confFileName<span class="o">}</span>
     6017    --file <span class="o">{</span>rawFileName<span class="o">}</span>
     6018    --key  <span class="o">{</span>keyName<span class="o">}</span> <span class="o">{</span>keyValue<span class="o">}</span>
     6019</pre></div>
     6020</div>
     6021</div>
     6022<div class="section" id="network-panel-keys">
     6023<span id="index-8"></span><h4>Network Panel keys<a class="headerlink" href="#network-panel-keys" title="Permalink to this headline">¶</a></h4>
     6024<table border="1" class="docutils">
     6025<colgroup>
     6026<col width="18%" />
     6027<col width="82%" />
     6028</colgroup>
     6029<thead valign="bottom">
     6030<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6031<th class="head"><strong>Meaning</strong></th>
     6032</tr>
     6033</thead>
     6034<tbody valign="top">
     6035<tr class="row-even"><td>proxyHost</td>
     6036<td>Proxy host, name or IP address [character string]</td>
     6037</tr>
     6038<tr class="row-odd"><td>proxyPort</td>
     6039<td>Proxy port [integer number]</td>
     6040</tr>
     6041<tr class="row-even"><td>sslCaCertPath</td>
     6042<td>Full path to SSL certificates [character string]</td>
     6043</tr>
     6044<tr class="row-odd"><td>sslIgnoreErrors</td>
     6045<td>Ignore SSL authorization errors [integer number: 0=no,2=yes]</td>
     6046</tr>
     6047</tbody>
     6048</table>
     6049</div>
     6050<div class="section" id="general-panel-keys">
     6051<span id="index-9"></span><h4>General Panel keys<a class="headerlink" href="#general-panel-keys" title="Permalink to this headline">¶</a></h4>
     6052<table border="1" class="docutils">
     6053<colgroup>
     6054<col width="18%" />
     6055<col width="82%" />
     6056</colgroup>
     6057<thead valign="bottom">
     6058<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6059<th class="head"><strong>Meaning</strong></th>
     6060</tr>
     6061</thead>
     6062<tbody valign="top">
     6063<tr class="row-even"><td>logFile</td>
     6064<td>Logfile, full path [character string]</td>
     6065</tr>
     6066<tr class="row-odd"><td>rnxAppend</td>
     6067<td>Append files [integer number: 0=no,2=yes]</td>
     6068</tr>
     6069<tr class="row-even"><td>onTheFlyInterval</td>
     6070<td>Configuration reload interval [character string: 1 day|1 hour|5 min|1 min]</td>
     6071</tr>
     6072<tr class="row-odd"><td>autoStart</td>
     6073<td>Auto start [integer number: 0=no,2=yes]</td>
     6074</tr>
     6075<tr class="row-even"><td>rawOutFile</td>
     6076<td>Raw output file, full path [character string]</td>
     6077</tr>
     6078</tbody>
     6079</table>
     6080</div>
     6081<div class="section" id="rinex-observations-panel-keys">
     6082<span id="index-10"></span><h4>RINEX Observations Panel keys<a class="headerlink" href="#rinex-observations-panel-keys" title="Permalink to this headline">¶</a></h4>
     6083<table border="1" class="docutils">
     6084<colgroup>
     6085<col width="18%" />
     6086<col width="82%" />
     6087</colgroup>
     6088<thead valign="bottom">
     6089<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6090<th class="head"><strong>Meaning</strong></th>
     6091</tr>
     6092</thead>
     6093<tbody valign="top">
     6094<tr class="row-even"><td>rnxPath</td>
     6095<td>Directory [character string]</td>
     6096</tr>
     6097<tr class="row-odd"><td>rnxIntr</td>
     6098<td>File interval [character string: 1 min|2 min|5 min|10 min|15 min|30 min|1 hour|1 day]</td>
     6099</tr>
     6100<tr class="row-even"><td>rnxSampl</td>
     6101<td>File sampling rate [integer number of seconds: 0,5|10|15|20|25|30|35|40|45|50|55|60]</td>
     6102</tr>
     6103<tr class="row-odd"><td>rnxSkel</td>
     6104<td>RINEX skeleton file extension [character string]</td>
     6105</tr>
     6106<tr class="row-even"><td>rnxOnlyWithSKL</td>
     6107<td>Using RINEX skeleton file is mandatory [integer number: 0=no,2=yes]</td>
     6108</tr>
     6109<tr class="row-odd"><td>rnxScript</td>
     6110<td>File upload script, full path [character string]</td>
     6111</tr>
     6112<tr class="row-even"><td>rnxV2Priority</td>
     6113<td>Priority of signal attributes [character string, list separated by blank character, example: G:CWPX_? R:CP]</td>
     6114</tr>
     6115<tr class="row-odd"><td>rnxV3</td>
     6116<td>Produce version 3 file content [integer number: 0=no,2=yes]</td>
     6117</tr>
     6118<tr class="row-even"><td>rnxV3filenames</td>
     6119<td>Produce version 3 filenames [integer number: 0=no,2=yes]</td>
     6120</tr>
     6121</tbody>
     6122</table>
     6123</div>
     6124<div class="section" id="rinex-ephemeris-panel-keys">
     6125<span id="index-11"></span><h4>RINEX Ephemeris Panel keys<a class="headerlink" href="#rinex-ephemeris-panel-keys" title="Permalink to this headline">¶</a></h4>
     6126<table border="1" class="docutils">
     6127<colgroup>
     6128<col width="18%" />
     6129<col width="82%" />
     6130</colgroup>
     6131<thead valign="bottom">
     6132<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6133<th class="head"><strong>Meaning</strong></th>
     6134</tr>
     6135</thead>
     6136<tbody valign="top">
     6137<tr class="row-even"><td>ephPath</td>
     6138<td>Directory [character string]</td>
     6139</tr>
     6140<tr class="row-odd"><td>ephIntr</td>
     6141<td>File interval [character string: 1 min|2 min|5 min|10 min|15 min|30 min|1 hour|1 day]</td>
     6142</tr>
     6143<tr class="row-even"><td>ephOutPort</td>
     6144<td>Output port [integer number]</td>
     6145</tr>
     6146<tr class="row-odd"><td>ephV3</td>
     6147<td>Produce version 3 file content [integer number: 0=no,2=yes]</td>
     6148</tr>
     6149<tr class="row-even"><td>ephV3filenames</td>
     6150<td>Produce version 3 filenames [integer number: 0=no,2=yes]</td>
     6151</tr>
     6152</tbody>
     6153</table>
     6154</div>
     6155<div class="section" id="rinex-editing-and-qc-panel-keys">
     6156<span id="index-12"></span><h4>RINEX Editing and QC Panel keys<a class="headerlink" href="#rinex-editing-and-qc-panel-keys" title="Permalink to this headline">¶</a></h4>
     6157<table border="1" class="docutils">
     6158<colgroup>
     6159<col width="17%" />
     6160<col width="83%" />
     6161</colgroup>
     6162<thead valign="bottom">
     6163<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6164<th class="head"><strong>Meaning</strong></th>
     6165</tr>
     6166</thead>
     6167<tbody valign="top">
     6168<tr class="row-even"><td>reqcAction</td>
     6169<td>Action specification [character string:  Blank|Edit/Concatenate|Analyze]</td>
     6170</tr>
     6171<tr class="row-odd"><td>reqcObsFile</td>
     6172<td>Input observations file(s), full path [character string, comma separated list in quotation marks]</td>
     6173</tr>
     6174<tr class="row-even"><td>reqcNavFile</td>
     6175<td>Input navigation file(s), full path [character string, comma separated list in quotation marks]</td>
     6176</tr>
     6177<tr class="row-odd"><td>reqcOutObsFile</td>
     6178<td>Output observations file, full path [character string]</td>
     6179</tr>
     6180<tr class="row-even"><td>reqcOutNavFile</td>
     6181<td>Output navigation file, full path [character string]</td>
     6182</tr>
     6183<tr class="row-odd"><td>reqcOutLogFile</td>
     6184<td>Output logfile, full path [character string]</td>
     6185</tr>
     6186<tr class="row-even"><td>reqcLogSummaryOnly</td>
     6187<td>Output only summary of logfile [integer number: 0=no,2=yes]</td>
     6188</tr>
     6189<tr class="row-odd"><td>reqcSkyPlotSignals</td>
     6190<td>Observation signals [character string, list separated by blank character, example: C:2&amp;7 E:1&amp;5 G:1&amp;2 J:1&amp;2 R:1&amp;2 S:1&amp;5]</td>
     6191</tr>
     6192<tr class="row-even"><td>reqcPlotDir</td>
     6193<td>QC plots directory [character string]</td>
     6194</tr>
     6195<tr class="row-odd"><td>reqcRnxVersion</td>
     6196<td>RINEX version [integer number: 2|3]</td>
     6197</tr>
     6198<tr class="row-even"><td>reqcSampling</td>
     6199<td>RINEX output file sampling rate [integer number of seconds: 0|5|10|15|20|25|30|35|40|45|50|55|60]</td>
     6200</tr>
     6201<tr class="row-odd"><td>reqcV2Priority</td>
     6202<td>Version 2 priority of signal attributes [character string, list separated by blank character, example: G:CWPX_? R:CP]</td>
     6203</tr>
     6204<tr class="row-even"><td>reqcStartDateTime</td>
     6205<td>Start time [character string, example: 1967-11-02T00:00:00]</td>
     6206</tr>
     6207<tr class="row-odd"><td>reqcEndDateTime</td>
     6208<td>Stop time [character string, example: 2099-01-01T00:00:00]</td>
     6209</tr>
     6210<tr class="row-even"><td>reqcRunBy</td>
     6211<td>Operators name [character string]</td>
     6212</tr>
     6213<tr class="row-odd"><td>eqcUseObsTypes</td>
     6214<td>Use observation types [character string, list separated by blank character, example: G:C1C G:L1C R:C1C RC1P]</td>
     6215</tr>
     6216<tr class="row-even"><td>reqcComment</td>
     6217<td>Additional comments [character string]</td>
     6218</tr>
     6219<tr class="row-odd"><td>reqcOldMarkerName</td>
     6220<td>Old marker name [character string]</td>
     6221</tr>
     6222<tr class="row-even"><td>reqcNewMarkerName</td>
     6223<td>New marker name [character string]</td>
     6224</tr>
     6225<tr class="row-odd"><td>reqcOldAntennaName</td>
     6226<td>Old antenna name [character string]</td>
     6227</tr>
     6228<tr class="row-even"><td>reqcNewAntennaName</td>
     6229<td>New antenna name [character string]</td>
     6230</tr>
     6231<tr class="row-odd"><td>reqcOldAntennaNumber</td>
     6232<td>Old antenna number [character string]</td>
     6233</tr>
     6234<tr class="row-even"><td>reqcNewAntennaNumber</td>
     6235<td>New antenna number [character string]</td>
     6236</tr>
     6237<tr class="row-odd"><td>reqcOldAntennadN</td>
     6238<td>Old north eccentricity [character string]</td>
     6239</tr>
     6240<tr class="row-even"><td>reqcNewAntennadN</td>
     6241<td>New north eccentricity [character string]</td>
     6242</tr>
     6243<tr class="row-odd"><td>reqcOldAntennadE</td>
     6244<td>Old east eccentricity [character string]</td>
     6245</tr>
     6246<tr class="row-even"><td>reqcNewAntennadE</td>
     6247<td>New east eccentricity [character string]</td>
     6248</tr>
     6249<tr class="row-odd"><td>reqcOldAntennadU</td>
     6250<td>Old up eccentricity [character string]</td>
     6251</tr>
     6252<tr class="row-even"><td>reqcNewAntennadU</td>
     6253<td>New up eccentricity [character string]</td>
     6254</tr>
     6255<tr class="row-odd"><td>reqcOldReceiverName</td>
     6256<td>Old receiver name [character string]</td>
     6257</tr>
     6258<tr class="row-even"><td>reqcNewReceiverName</td>
     6259<td>New receiver name [character string]</td>
     6260</tr>
     6261<tr class="row-odd"><td>reqcOldReceiverNumber</td>
     6262<td>Old receiver number [character string]</td>
     6263</tr>
     6264<tr class="row-even"><td>reqcNewReceiverNumber</td>
     6265<td>New receiver number [character string]</td>
     6266</tr>
     6267</tbody>
     6268</table>
     6269</div>
     6270<div class="section" id="sp3-comparison-panel-keys">
     6271<span id="index-13"></span><h4>SP3 Comparison Panel keys<a class="headerlink" href="#sp3-comparison-panel-keys" title="Permalink to this headline">¶</a></h4>
     6272<table border="1" class="docutils">
     6273<colgroup>
     6274<col width="18%" />
     6275<col width="82%" />
     6276</colgroup>
     6277<thead valign="bottom">
     6278<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6279<th class="head"><strong>Meaning</strong></th>
     6280</tr>
     6281</thead>
     6282<tbody valign="top">
     6283<tr class="row-even"><td>sp3CompFile</td>
     6284<td>SP3 input files, full path [character string, comma separated list in quotation marks]</td>
     6285</tr>
     6286<tr class="row-odd"><td>sp3CompExclude</td>
     6287<td>Satellite exclusion list [character string, comma separated list in quotation marks, example: G04,G31,R]</td>
     6288</tr>
     6289<tr class="row-even"><td>sp3CompOutLogFile</td>
     6290<td>Output logfile, full path [character string]</td>
     6291</tr>
     6292</tbody>
     6293</table>
     6294</div>
     6295<div class="section" id="broadcast-corrections-panel-keys">
     6296<span id="index-14"></span><h4>Broadcast Corrections Panel keys<a class="headerlink" href="#broadcast-corrections-panel-keys" title="Permalink to this headline">¶</a></h4>
     6297<table border="1" class="docutils">
     6298<colgroup>
     6299<col width="18%" />
     6300<col width="82%" />
     6301</colgroup>
     6302<thead valign="bottom">
     6303<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6304<th class="head"><strong>Meaning</strong></th>
     6305</tr>
     6306</thead>
     6307<tbody valign="top">
     6308<tr class="row-even"><td>corrPath</td>
     6309<td>Directory for saving files in ASCII format [character string]</td>
     6310</tr>
     6311<tr class="row-odd"><td>corrIntr</td>
     6312<td>File interval [character string: 1 min|2 min|5 min|10 min|15 min|30 min|1 hour|1 day]</td>
     6313</tr>
     6314<tr class="row-even"><td>corrPort</td>
     6315<td>Output port [integer number]</td>
     6316</tr>
     6317</tbody>
     6318</table>
     6319</div>
     6320<div class="section" id="feed-engine-panel-keys">
     6321<span id="index-15"></span><h4>Feed Engine Panel keys<a class="headerlink" href="#feed-engine-panel-keys" title="Permalink to this headline">¶</a></h4>
     6322<table border="1" class="docutils">
     6323<colgroup>
     6324<col width="18%" />
     6325<col width="82%" />
     6326</colgroup>
     6327<thead valign="bottom">
     6328<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6329<th class="head"><strong>Meaning</strong></th>
     6330</tr>
     6331</thead>
     6332<tbody valign="top">
     6333<tr class="row-even"><td>outPort</td>
     6334<td>Output port, synchronized [integer number]</td>
     6335</tr>
     6336<tr class="row-odd"><td>outWait</td>
     6337<td>Wait for full observation epoch [integer number of seconds: 1-30]</td>
     6338</tr>
     6339<tr class="row-even"><td>outSampl</td>
     6340<td>Sampling rate [integer number of seconds: 0|5|10|15|20|25|30|35|40|45|50|55|60]</td>
     6341</tr>
     6342<tr class="row-odd"><td>outFile</td>
     6343<td>Output file, full path [character string]</td>
     6344</tr>
     6345<tr class="row-even"><td>outUPort</td>
     6346<td>Output port, unsynchronized [integer number]</td>
     6347</tr>
     6348</tbody>
     6349</table>
     6350</div>
     6351<div class="section" id="serial-output-panel-keys">
     6352<span id="index-16"></span><h4>Serial Output Panel keys<a class="headerlink" href="#serial-output-panel-keys" title="Permalink to this headline">¶</a></h4>
     6353<table border="1" class="docutils">
     6354<colgroup>
     6355<col width="18%" />
     6356<col width="82%" />
     6357</colgroup>
     6358<thead valign="bottom">
     6359<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6360<th class="head"><strong>Meaning</strong></th>
     6361</tr>
     6362</thead>
     6363<tbody valign="top">
     6364<tr class="row-even"><td>serialMountPoint</td>
     6365<td>Mountpoint [character string]</td>
     6366</tr>
     6367<tr class="row-odd"><td>serialPortName</td>
     6368<td>Port name [character string]</td>
     6369</tr>
     6370<tr class="row-even"><td>serialBaudRate</td>
     6371<td>Baud rate [integer number: 110|300|600|1200|2400|4800|9600|19200|38400|57600|115200]</td>
     6372</tr>
     6373<tr class="row-odd"><td>serialFlowControl</td>
     6374<td>Flow control [character string: OFF|XONXOFF|HARDWARE</td>
     6375</tr>
     6376<tr class="row-even"><td>serialDataBits</td>
     6377<td>Data bits [integer number: 5|6|7|8]</td>
     6378</tr>
     6379<tr class="row-odd"><td>serialParity</td>
     6380<td>Parity [character string: NONE|ODD|EVEN|SPACE]</td>
     6381</tr>
     6382<tr class="row-even"><td>serialStopBits</td>
     6383<td>Stop bits [integer number: 1|2]</td>
     6384</tr>
     6385<tr class="row-odd"><td>serialAutoNMEA</td>
     6386<td>NMEA specification [character string: no|Auto|Manual GPGGA|Manual GNGGA]</td>
     6387</tr>
     6388<tr class="row-even"><td>serialFileNMEA</td>
     6389<td>NMEA filename, full path [character string]</td>
     6390</tr>
     6391<tr class="row-odd"><td>serialHeightNMEA</td>
     6392<td>Height [floating-point number]</td>
     6393</tr>
     6394<tr class="row-even"><td>serialHeightNMEASampling</td>
     6395<td>Sampling rate [integer number of seconds: 0|10|20|30|...|280|290|300]</td>
     6396</tr>
     6397</tbody>
     6398</table>
     6399</div>
     6400<div class="section" id="outages-panel-keys">
     6401<span id="index-17"></span><h4>Outages Panel keys<a class="headerlink" href="#outages-panel-keys" title="Permalink to this headline">¶</a></h4>
     6402<table border="1" class="docutils">
     6403<colgroup>
     6404<col width="18%" />
     6405<col width="82%" />
     6406</colgroup>
     6407<thead valign="bottom">
     6408<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6409<th class="head"><strong>Meaning</strong></th>
     6410</tr>
     6411</thead>
     6412<tbody valign="top">
     6413<tr class="row-even"><td>adviseObsRate</td>
     6414<td>Stream observation rate [character string: 0.1 Hz|0.2 Hz|0.5 Hz|1 Hz|5 Hz]</td>
     6415</tr>
     6416<tr class="row-odd"><td>adviseFail</td>
     6417<td>Failure threshold [integer number of minutes: 0-60]</td>
     6418</tr>
     6419<tr class="row-even"><td>adviseReco</td>
     6420<td>Recovery threshold [integer number of minutes: 0-60]</td>
     6421</tr>
     6422<tr class="row-odd"><td>adviseScript</td>
     6423<td>Advisory script, full path [character string]</td>
     6424</tr>
     6425</tbody>
     6426</table>
     6427</div>
     6428<div class="section" id="miscellaneous-panel-keys">
     6429<span id="index-18"></span><h4>Miscellaneous Panel keys<a class="headerlink" href="#miscellaneous-panel-keys" title="Permalink to this headline">¶</a></h4>
     6430<table border="1" class="docutils">
     6431<colgroup>
     6432<col width="18%" />
     6433<col width="82%" />
     6434</colgroup>
     6435<thead valign="bottom">
     6436<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6437<th class="head"><strong>Meaning</strong></th>
     6438</tr>
     6439</thead>
     6440<tbody valign="top">
     6441<tr class="row-even"><td>miscMount</td>
     6442<td>Mountpoint [character string]</td>
     6443</tr>
     6444<tr class="row-odd"><td>miscIntr</td>
     6445<td>Interval for logging latency [character string: Blank|2 sec|10 sec|1 min|5 min|15 min|1 hour|6 hours|1 day]</td>
     6446</tr>
     6447<tr class="row-even"><td>miscScanRTCM</td>
     6448<td>Scan for RTCM message numbers [integer number: 0=no,2=yes]</td>
     6449</tr>
     6450<tr class="row-odd"><td>miscPort</td>
     6451<td>Output port [integer number]</td>
     6452</tr>
     6453</tbody>
     6454</table>
     6455</div>
     6456<div class="section" id="ppp-client-panel-1-keys">
     6457<span id="index-19"></span><h4>PPP Client Panel 1 keys<a class="headerlink" href="#ppp-client-panel-1-keys" title="Permalink to this headline">¶</a></h4>
     6458<table border="1" class="docutils">
     6459<colgroup>
     6460<col width="18%" />
     6461<col width="82%" />
     6462</colgroup>
     6463<thead valign="bottom">
     6464<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6465<th class="head"><strong>Meaning</strong></th>
     6466</tr>
     6467</thead>
     6468<tbody valign="top">
     6469<tr class="row-even"><td>PPP/dataSource</td>
     6470<td>Data source [character string: Blank|Real-Time Streams|RINEX Files]</td>
     6471</tr>
     6472<tr class="row-odd"><td>PPP/rinexObs</td>
     6473<td>RINEX observation file, full path [character string]</td>
     6474</tr>
     6475<tr class="row-even"><td>PPP/rinexNav</td>
     6476<td>RINEX navigation file, full path [character string]</td>
     6477</tr>
     6478<tr class="row-odd"><td>PPP/corrMount</td>
     6479<td>Corrections mountpoint [character string]</td>
     6480</tr>
     6481<tr class="row-even"><td>PPP/corrFile</td>
     6482<td>Corrections file, full path [character string]</td>
     6483</tr>
     6484<tr class="row-odd"><td>PPP/antexFile</td>
     6485<td>ANTEX file, full path [character string]</td>
     6486</tr>
     6487<tr class="row-even"><td>PPP/crdFile</td>
     6488<td>Coordinates file, full path [character string]</td>
     6489</tr>
     6490<tr class="row-odd"><td>PPP/v3filenames</td>
     6491<td>Produce version 3 filenames, [integer number: 0=no,2=yes]</td>
     6492</tr>
     6493<tr class="row-even"><td>PPP/logPath</td>
     6494<td>Directory for PPP log files [character string]</td>
     6495</tr>
     6496<tr class="row-odd"><td>PPP/nmeaPath</td>
     6497<td>Directory for NMEA output files [character string]</td>
     6498</tr>
     6499<tr class="row-even"><td>PPP/snxtroPath</td>
     6500<td>Directory for SINEX troposphere output files [character string]</td>
     6501</tr>
     6502<tr class="row-odd"><td>PPP/snxtroIntr</td>
     6503<td>SINEX troposphere file interval [character string: 1 min|2 min|5 min|10 min|15 min|30 min|1 hour|1 day]</td>
     6504</tr>
     6505<tr class="row-even"><td>PPP/snxtroSampl</td>
     6506<td>SINEX troposphere file sampling rate [integer number of seconds: 0|30|60|90|120|150|180|210|240|270|300]</td>
     6507</tr>
     6508<tr class="row-odd"><td>PPP/snxtroAc</td>
     6509<td>SINEX troposphere Analysis Center [character string]</td>
     6510</tr>
     6511<tr class="row-even"><td>PPP/snxtroSol</td>
     6512<td>SINEX troposphere solution ID [character string]</td>
     6513</tr>
     6514</tbody>
     6515</table>
     6516</div>
     6517<div class="section" id="ppp-client-panel-2-keys">
     6518<span id="index-20"></span><h4>PPP Client Panel 2 keys<a class="headerlink" href="#ppp-client-panel-2-keys" title="Permalink to this headline">¶</a></h4>
     6519<table border="1" class="docutils">
     6520<colgroup>
     6521<col width="9%" />
     6522<col width="91%" />
     6523</colgroup>
     6524<thead valign="bottom">
     6525<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6526<th class="head"><strong>Meaning</strong></th>
     6527</tr>
     6528</thead>
     6529<tbody valign="top">
     6530<tr class="row-even"><td>PPP/staTable</td>
     6531<td>Station specifications table [character string, semicolon separated list, each element in quotation marks, example:&#8221;FFMJ1,100.0,100.0,100.0,100.0,100.0,100.0,0.1,3e-6,7777;CUT07,100.0,100.0,100.0,100.0,100.0,100.0,0.1,3e-6,7778&#8221;]</td>
     6532</tr>
     6533</tbody>
     6534</table>
     6535</div>
     6536<div class="section" id="ppp-client-panel-3-keys">
     6537<span id="index-21"></span><h4>PPP Client Panel 3 keys<a class="headerlink" href="#ppp-client-panel-3-keys" title="Permalink to this headline">¶</a></h4>
     6538<table border="1" class="docutils">
     6539<colgroup>
     6540<col width="18%" />
     6541<col width="82%" />
     6542</colgroup>
     6543<thead valign="bottom">
     6544<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6545<th class="head"><strong>Meaning</strong></th>
     6546</tr>
     6547</thead>
     6548<tbody valign="top">
     6549<tr class="row-even"><td>PPP/lcGPS</td>
     6550<td>Select linear combination from GPS code or phase data [character string; P3|P3&amp;L3]</td>
     6551</tr>
     6552<tr class="row-odd"><td>PPP/lcGLONASS</td>
     6553<td>Select linear combination from GLONASS code or phase data [character string: no|P3|L3|P3&amp;L3]</td>
     6554</tr>
     6555<tr class="row-even"><td>PPP/lcGalileo</td>
     6556<td>elect linear combination from Galileo code or phase data [character string: no|P3|L3|P3&amp;L3]</td>
     6557</tr>
     6558<tr class="row-odd"><td>PPP/lcBDS</td>
     6559<td>Select linear combination from BDS code or phase data [character string: no|P3|L3|P3&amp;L3]</td>
     6560</tr>
     6561<tr class="row-even"><td>PPP/sigmaC1</td>
     6562<td>Sigma for code observations in meters [floating-point number]</td>
     6563</tr>
     6564<tr class="row-odd"><td>PPP/sigmaL1</td>
     6565<td>Sigma for phase observations in meters [floating-point number]</td>
     6566</tr>
     6567<tr class="row-even"><td>PPP/maxResC1</td>
     6568<td>Maximal residuum for code observations in meters [floating-point number]</td>
     6569</tr>
     6570<tr class="row-odd"><td>PPP/maxResL1</td>
     6571<td>Maximal residuum for phase observations in meters [floating-point number]</td>
     6572</tr>
     6573<tr class="row-even"><td>PPP/eleWgtCode</td>
     6574<td>Elevation dependent waiting of code observations [integer number: 0=no,2=yes]</td>
     6575</tr>
     6576<tr class="row-odd"><td>PPP/eleWgtPhase</td>
     6577<td>Elevation dependent waiting of phase observations [integer number: 0=no,2=yes]</td>
     6578</tr>
     6579<tr class="row-even"><td>PPP/minObs</td>
     6580<td>Minimum number of observations [integer number: 4|5|6]</td>
     6581</tr>
     6582<tr class="row-odd"><td>PPP/minEle</td>
     6583<td>Minimum satellite elevation in degrees [integer number: 0-20]</td>
     6584</tr>
     6585<tr class="row-even"><td>PPP/corrWaitTime</td>
     6586<td>Wait for clock corrections [integer number of seconds: no|1-20]</td>
     6587</tr>
     6588<tr class="row-odd"><td>PPP/seedingTime</td>
     6589<td>Seeding time span for Quick Start [integer number of seconds]</td>
     6590</tr>
     6591</tbody>
     6592</table>
     6593</div>
     6594<div class="section" id="ppp-client-panel-4-keys">
     6595<span id="index-22"></span><h4>PPP Client Panel 4 keys<a class="headerlink" href="#ppp-client-panel-4-keys" title="Permalink to this headline">¶</a></h4>
     6596<table border="1" class="docutils">
     6597<colgroup>
     6598<col width="18%" />
     6599<col width="82%" />
     6600</colgroup>
     6601<thead valign="bottom">
     6602<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6603<th class="head"><strong>Meaning</strong></th>
     6604</tr>
     6605</thead>
     6606<tbody valign="top">
     6607<tr class="row-even"><td>PPP/plotCoordinates</td>
     6608<td>Mountpoint for time series plot [character string]</td>
     6609</tr>
     6610<tr class="row-odd"><td>PPP/audioResponse</td>
     6611<td>Audio response threshold in meters [floating-point number]</td>
     6612</tr>
     6613<tr class="row-even"><td>PPP/useOpenStreetMap</td>
     6614<td>OSM track map [character string: true|false]</td>
     6615</tr>
     6616<tr class="row-odd"><td>PPP/useGoogleMap</td>
     6617<td>Google track map [character string: true|false]</td>
     6618</tr>
     6619<tr class="row-even"><td>PPP/mapWinDotSize</td>
     6620<td>Size of dots on map [integer number: 0-10]</td>
     6621</tr>
     6622<tr class="row-odd"><td>PPP/mapWinDotColor</td>
     6623<td>Color of dots and cross hair on map [character string: red|yellow]</td>
     6624</tr>
     6625<tr class="row-even"><td>PPP/mapSpeedSlider</td>
     6626<td>Offline processing speed for mapping [integer number: 1-100]</td>
     6627</tr>
     6628</tbody>
     6629</table>
     6630</div>
     6631<div class="section" id="combine-corrections-panel-keys">
     6632<span id="index-23"></span><h4>Combine Corrections Panel keys<a class="headerlink" href="#combine-corrections-panel-keys" title="Permalink to this headline">¶</a></h4>
     6633<table border="1" class="docutils">
     6634<colgroup>
     6635<col width="15%" />
     6636<col width="85%" />
     6637</colgroup>
     6638<thead valign="bottom">
     6639<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6640<th class="head"><strong>Meaning</strong></th>
     6641</tr>
     6642</thead>
     6643<tbody valign="top">
     6644<tr class="row-even"><td>cmbStreams</td>
     6645<td>Correction streams table [character string, semicolon separated list, each element in quotation marks, example:&#8221;IGS01 ESA 1.0;IGS03 BKG 1.0&#8221;]</td>
     6646</tr>
     6647<tr class="row-odd"><td>cmbMethodFilter</td>
     6648<td>Combination approach [character string: Single-Epoch|Filter]</td>
     6649</tr>
     6650<tr class="row-even"><td>cmbMaxres</td>
     6651<td>Clock outlier residuum threshold in meters [floating-point number]</td>
     6652</tr>
     6653<tr class="row-odd"><td>cmbSampl</td>
     6654<td>Clock sampling rate [integer number of seconds: 10|20|30|40|50|60]</td>
     6655</tr>
     6656<tr class="row-even"><td>cmbUseGlonass</td>
     6657<td>Use GLONASS in combination [integer number: 0=no,2=yes]</td>
     6658</tr>
     6659</tbody>
     6660</table>
     6661</div>
     6662<div class="section" id="upload-corrections-panel-keys">
     6663<span id="index-24"></span><h4>Upload Corrections Panel keys<a class="headerlink" href="#upload-corrections-panel-keys" title="Permalink to this headline">¶</a></h4>
     6664<table border="1" class="docutils">
     6665<colgroup>
     6666<col width="8%" />
     6667<col width="92%" />
     6668</colgroup>
     6669<thead valign="bottom">
     6670<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6671<th class="head"><strong>Meaning</strong></th>
     6672</tr>
     6673</thead>
     6674<tbody valign="top">
     6675<tr class="row-even"><td>uploadMountpointsOut</td>
     6676<td>Upload corrections table [character string, semicolon separated list, each element in quotation marks, example: &#8220;www.igs-ip.net,2101,IGS01,pass,IGS08,0, /home/user/BNC$[GPSWD}.sp3, /home/user/BNC$[GPSWD}.clk,258,1,0; www.euref-ip.net,2101,EUREF01,pass,ETRF2000,0,,,258,2,0&#8221;]</td>
     6677</tr>
     6678<tr class="row-odd"><td>uploadIntr</td>
     6679<td>Length of SP3 and Clock RINEX file interval [character string: 1 min|2 min|5 min|10 min|15 min|30 min|1 hour|1 day]</td>
     6680</tr>
     6681<tr class="row-even"><td>uploadSamplRtcmEphCorr</td>
     6682<td>Orbit corrections stream sampling rate [integer number of seconds: 0|5|10|15|20|25|30|35|40|45|50|55|60]</td>
     6683</tr>
     6684<tr class="row-odd"><td>uploadSamplSp3</td>
     6685<td>SP3 file sampling rate [integer number of minutes: 0-15]</td>
     6686</tr>
     6687<tr class="row-even"><td>uploadSamplClkRnx</td>
     6688<td>Clock RINEX file sampling rate [integer number of seconds: 0|5|10|15|20|25|30|35|40|45|50|55|60]</td>
     6689</tr>
     6690</tbody>
     6691</table>
     6692</div>
     6693<div class="section" id="custom-trafo-keys">
     6694<span id="index-25"></span><h4>Custom Trafo keys<a class="headerlink" href="#custom-trafo-keys" title="Permalink to this headline">¶</a></h4>
     6695<table border="1" class="docutils">
     6696<colgroup>
     6697<col width="18%" />
     6698<col width="82%" />
     6699</colgroup>
     6700<thead valign="bottom">
     6701<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6702<th class="head"><strong>Meaning</strong></th>
     6703</tr>
     6704</thead>
     6705<tbody valign="top">
     6706<tr class="row-even"><td>trafo_dx</td>
     6707<td>Translation X in meters [floating-point number]</td>
     6708</tr>
     6709<tr class="row-odd"><td>trafo_dy</td>
     6710<td>Translation Y in meters [floating-point number]</td>
     6711</tr>
     6712<tr class="row-even"><td>trafo_dz</td>
     6713<td>Translation Z in meters [floating-point number]</td>
     6714</tr>
     6715<tr class="row-odd"><td>trafo_dxr</td>
     6716<td>Translation change X in meters per year [floating-point number]</td>
     6717</tr>
     6718<tr class="row-even"><td>trafo_dyr</td>
     6719<td>Translation change Y in meters per year [floating-point number]</td>
     6720</tr>
     6721<tr class="row-odd"><td>trafo_dzr</td>
     6722<td>Translation change Z in meters per year [floating-point number]</td>
     6723</tr>
     6724<tr class="row-even"><td>trafo_ox</td>
     6725<td>Rotation X in arcsec [floating-point number]</td>
     6726</tr>
     6727<tr class="row-odd"><td>trafo_oy</td>
     6728<td>Rotation Y in arcsec [floating-point number]</td>
     6729</tr>
     6730<tr class="row-even"><td>trafo_oz</td>
     6731<td>Rotation Z in arcsec [floating-point number]</td>
     6732</tr>
     6733<tr class="row-odd"><td>trafo_oxr</td>
     6734<td>Rotation change X in arcsec per year [floating-point number]</td>
     6735</tr>
     6736<tr class="row-even"><td>trafo_oyr</td>
     6737<td>Rotation change Y in arcsec per year [floating-point number]</td>
     6738</tr>
     6739<tr class="row-odd"><td>trafo_ozr</td>
     6740<td>Rotation change Z in arcsec per year [floating-point number]</td>
     6741</tr>
     6742<tr class="row-even"><td>trafo_sc</td>
     6743<td>Scale [10^-9, floating-point number]</td>
     6744</tr>
     6745<tr class="row-odd"><td>trafo_scr</td>
     6746<td>Scale change [10^-9 per year, floating-point number]</td>
     6747</tr>
     6748<tr class="row-even"><td>trafo_t0</td>
     6749<td>Reference year [integer number]</td>
     6750</tr>
     6751</tbody>
     6752</table>
     6753</div>
     6754<div class="section" id="upload-ephemeris-panel-keys">
     6755<span id="index-26"></span><h4>Upload Ephemeris Panel keys<a class="headerlink" href="#upload-ephemeris-panel-keys" title="Permalink to this headline">¶</a></h4>
     6756<table border="1" class="docutils">
     6757<colgroup>
     6758<col width="18%" />
     6759<col width="82%" />
     6760</colgroup>
     6761<thead valign="bottom">
     6762<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6763<th class="head"><strong>Meaning</strong></th>
     6764</tr>
     6765</thead>
     6766<tbody valign="top">
     6767<tr class="row-even"><td>uploadEphHost</td>
     6768<td>Broadcaster host, name or IP address [character string]</td>
     6769</tr>
     6770<tr class="row-odd"><td>uploadEphPort</td>
     6771<td>Broadcaster port [integer number]</td>
     6772</tr>
     6773<tr class="row-even"><td>uploadEphMountpoint</td>
     6774<td>Mountpoint [character string]</td>
     6775</tr>
     6776<tr class="row-odd"><td>uploadEphPassword</td>
     6777<td>Stream upload password [character string]</td>
     6778</tr>
     6779<tr class="row-even"><td>uploadEphSample</td>
     6780<td>Stream upload sampling rate [integer number of seconds: 5|10|15|20|25|30|35|40|45|50|55|60]</td>
     6781</tr>
     6782</tbody>
     6783</table>
     6784</div>
     6785<div class="section" id="add-stream-keys">
     6786<span id="index-27"></span><h4>Add Stream keys<a class="headerlink" href="#add-stream-keys" title="Permalink to this headline">¶</a></h4>
     6787<table border="1" class="docutils">
     6788<colgroup>
     6789<col width="18%" />
     6790<col width="82%" />
     6791</colgroup>
     6792<thead valign="bottom">
     6793<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6794<th class="head"><strong>Meaning</strong></th>
     6795</tr>
     6796</thead>
     6797<tbody valign="top">
     6798<tr class="row-even"><td>mountPoints</td>
     6799<td>Mountpoints [character string, semicolon separated list, example:</td>
     6800</tr>
     6801<tr class="row-odd"><td><div class="first last line-block">
     6802<div class="line"><br /></div>
     6803</div>
     6804</td>
     6805<td>&#8220;//user:pass&#64;www.igs-ip.net:2101/FFMJ1 RTCM_3.1 DEU 50.09 8.66 no 2;</td>
     6806</tr>
     6807<tr class="row-even"><td><div class="first last line-block">
     6808<div class="line"><br /></div>
     6809</div>
     6810</td>
     6811<td>//user:pass&#64;www.igs-ip.net:2101/FFMJ2 RTCM_3.1 DEU 50.09 8.66 no 2&#8221;</td>
     6812</tr>
     6813<tr class="row-odd"><td>ntripVersion</td>
     6814<td>Ntrip Version [character string: 1|2|2s|R|U]</td>
     6815</tr>
     6816<tr class="row-even"><td>casterUrlList</td>
     6817<td>Visited Broadcasters [character string, comma separated list]</td>
     6818</tr>
     6819</tbody>
     6820</table>
     6821</div>
     6822<div class="section" id="appearance-keys">
     6823<span id="index-28"></span><h4>Appearance keys<a class="headerlink" href="#appearance-keys" title="Permalink to this headline">¶</a></h4>
     6824<table border="1" class="docutils">
     6825<colgroup>
     6826<col width="18%" />
     6827<col width="82%" />
     6828</colgroup>
     6829<thead valign="bottom">
     6830<tr class="row-odd"><th class="head"><strong>KeyName</strong></th>
     6831<th class="head"><strong>Meaning</strong></th>
     6832</tr>
     6833</thead>
     6834<tbody valign="top">
     6835<tr class="row-even"><td>startTab</td>
     6836<td>Index of top panel to be presented at start time [integer number: 0-17]</td>
     6837</tr>
     6838<tr class="row-odd"><td>statusTab</td>
     6839<td>Index of bottom panel to be presented at start time [integer number: 0-3]</td>
     6840</tr>
     6841<tr class="row-even"><td>font</td>
     6842<td>Font specification [character string in quotation marks, example: &#8220;Helvetica,14,-1,5,50,0,0,0,0,0&#8221;]</td>
     6843</tr>
     6844</tbody>
     6845</table>
     6846</div>
     6847<div class="section" id="example-command-lines">
     6848<h4>Example command lines<a class="headerlink" href="#example-command-lines" title="Permalink to this headline">¶</a></h4>
     6849<p>The syntax of some command line configuration options slightly differs from that
    53286850used in configuration files: Configuration file options which contain one or more
    53296851blank characters or contain a semicolon separated parameter list must be enclosed
    5330 by quotation marks when specified on command line.
     6852by quotation marks when specified on command line.</p>
     6853<ol class="arabic simple">
     6854<li><code class="docutils literal"><span class="pre">/home/weber/bin/bnc</span></code></li>
     6855<li><code class="docutils literal"><span class="pre">/Applications/bnc.app/Contents/MacOS/bnc</span></code></li>
     6856<li><code class="docutils literal"><span class="pre">/home/weber/bin/bnc</span> <span class="pre">--conf</span> <span class="pre">/home/weber/MyConfigFile.bnc</span></code></li>
     6857<li><code class="docutils literal"><span class="pre">bnc</span> <span class="pre">--conf</span> <span class="pre">/Users/weber/.config/BKG/BNC.bnc</span> <span class="pre">-nw</span></code></li>
     6858<li><code class="docutils literal"><span class="pre">bnc</span> <span class="pre">--conf</span> <span class="pre">/dev/null</span> <span class="pre">--key</span> <span class="pre">startTab</span> <span class="pre">4</span> <span class="pre">--key</span> <span class="pre">reqcAction</span> <span class="pre">Edit/Concatenate</span> <span class="pre">--key</span> <span class="pre">reqcObsFile</span> <span class="pre">AGAR.15O</span> <span class="pre">--key</span> <span class="pre">reqcOutObsFile</span> <span class="pre">AGAR_X.15O</span> <span class="pre">--key</span> <span class="pre">reqcRnxVersion</span> <span class="pre">2</span> <span class="pre">--key</span> <span class="pre">reqcSampling</span> <span class="pre">30</span> <span class="pre">--key</span> <span class="pre">reqcV2Priority</span> <span class="pre">CWPX_?</span></code></li>
     6859<li><code class="docutils literal"><span class="pre">bnc</span> <span class="pre">--key</span> <span class="pre">mountPoints</span> <span class="pre">&quot;//user:pass&#64;mgex.igs-ip.net:2101/CUT07</span> <span class="pre">RTCM_3.0</span> <span class="pre">ETH</span> <span class="pre">9.03</span> <span class="pre">38.74</span> <span class="pre">no</span> <span class="pre">2;//user:pass&#64;www.igs-ip.net:2101/FFMJ1</span> <span class="pre">RTCM_3.1</span> <span class="pre">DEU</span> <span class="pre">50.09</span> <span class="pre">8.66</span> <span class="pre">no</span> <span class="pre">2&quot;</span></code></li>
     6860<li><code class="docutils literal"><span class="pre">bnc</span> <span class="pre">--key</span> <span class="pre">cmbStreams</span> <span class="pre">&quot;CLK11</span> <span class="pre">BLG</span> <span class="pre">1.0;CLK93</span> <span class="pre">CNES</span> <span class="pre">1.0&quot;</span></code></li>
     6861<li><code class="docutils literal"><span class="pre">bnc</span> <span class="pre">--key</span> <span class="pre">uploadMountpointsOut</span> <span class="pre">&quot;products.igs-ip.net,98756,TEST,</span> <span class="pre">letmein,IGS08,2,/Users/weber/BNC${GPSWD}.clk,,33,3,2;</span> <span class="pre">www.euref-ip.net,333,TEST2,aaaaa,NAD83,2,,,33,5,5&quot;</span></code></li>
     6862<li><code class="docutils literal"><span class="pre">bnc</span> <span class="pre">--key</span> <span class="pre">PPP/staTable</span> <span class="pre">&quot;FFMJ1,100.0,100.0,100.0,100.0,100.0,100.0,</span> <span class="pre">0.1,3e-6,7777;CUT07,100.0,100.0,100.0,100.0,100.0,100.0,0.1,3e-6,</span> <span class="pre">7778&quot;</span></code></li>
     6863</ol>
     6864</div>
     6865</div>
     6866<div class="section" id="further-reading">
     6867<span id="index-29"></span><h3>Further Reading<a class="headerlink" href="#further-reading" title="Permalink to this headline">¶</a></h3>
     6868<table border="1" class="docutils">
     6869<colgroup>
     6870<col width="53%" />
     6871<col width="47%" />
     6872</colgroup>
     6873<tbody valign="top">
     6874<tr class="row-odd"><td>Ntrip</td>
     6875<td><a class="reference external" href="http://igs.bkg.bund.de/ntrip/index">http://igs.bkg.bund.de/ntrip/index</a></td>
     6876</tr>
     6877<tr class="row-even"><td>EUREF-IP Ntrip Broadcaster</td>
     6878<td><a class="reference external" href="http://www.euref-ip.net/home">http://www.euref-ip.net/home</a></td>
     6879</tr>
     6880<tr class="row-odd"><td>IGS-IP Ntrip Broadcaster</td>
     6881<td><a class="reference external" href="http://www.igs-ip.net/home">http://www.igs-ip.net/home</a></td>
     6882</tr>
     6883<tr class="row-even"><td>IGS products Ntrip Broadcaster</td>
     6884<td><a class="reference external" href="http://products.igs-ip.net/home">http://products.igs-ip.net/home</a></td>
     6885</tr>
     6886<tr class="row-odd"><td>IGS M-GEX Ntrip Broadcaster</td>
     6887<td><a class="reference external" href="http://mgex.igs-ip.net/home">http://mgex.igs-ip.net/home</a></td>
     6888</tr>
     6889<tr class="row-even"><td>IGS Central Bureau Ntrip Broadcaster</td>
     6890<td><a class="reference external" href="http://rt.igs.org">http://rt.igs.org</a></td>
     6891</tr>
     6892<tr class="row-odd"><td>IGS Real-time Service</td>
     6893<td><a class="reference external" href="http://rts.igs.org">http://rts.igs.org</a></td>
     6894</tr>
     6895<tr class="row-even"><td>Distribution of IGS-IP streams</td>
     6896<td><a class="reference external" href="http://www.igs.oma.be/real_time">http://www.igs.oma.be/real_time</a></td>
     6897</tr>
     6898<tr class="row-odd"><td>Completeness and latency of IGS-IP data</td>
     6899<td><a class="reference external" href="http://www.igs.oma.be/highrate/">http://www.igs.oma.be/highrate/</a></td>
     6900</tr>
     6901<tr class="row-even"><td>Ntrip Broadcaster overview</td>
     6902<td><a class="reference external" href="http://www.rtcm-ntrip.org/home">http://www.rtcm-ntrip.org/home</a></td>
     6903</tr>
     6904<tr class="row-odd"><td>Ntrip Open Source software code</td>
     6905<td><a class="reference external" href="http://software.rtcm-ntrip.org">http://software.rtcm-ntrip.org</a></td>
     6906</tr>
     6907<tr class="row-even"><td>EUREF-IP Project</td>
     6908<td><a class="reference external" href="http://www.epncb.oma.be/euref_IP">http://www.epncb.oma.be/euref_IP</a></td>
     6909</tr>
     6910<tr class="row-odd"><td>Radio Technical Commission for Maritime
     6911Services</td>
     6912<td><a class="reference external" href="http://www.rtcm.org">http://www.rtcm.org</a></td>
     6913</tr>
     6914</tbody>
     6915</table>
     6916</div>
     6917</div>
     6918</div>
     6919<p id="bibtex-bibliography-bnchelp-0"></p>
     6920</div>
    53316921
    5332 <b>Example command lines:</b>
    5333 (1) /home/weber/bin/bnc
    5334 (2) /Applications/bnc.app/Contents/MacOS/bnc
    5335 (3) /home/weber/bin/bnc --conf /home/weber/MyConfigFile.bnc
    5336 (4) bnc --conf /Users/weber/.config/BKG/BNC.bnc -nw
    5337 (5) bnc --conf /dev/null --key startTab 4 --key reqcAction Edit/Concatenate --key reqcObsFile AGAR.15O --key reqcOutObsFile AGAR_X.15O
    5338         --key reqcRnxVersion 2 --key reqcSampling 30 --key reqcV2Priority CWPX_?
    5339 (6) bnc --key mountPoints "//user:pass@mgex.igs-ip.net:2101/CUT07 RTCM_3.0 ETH 9.03 38.74 no 2;
    5340                            //user:pass@www.igs-ip.net:2101/FFMJ1 RTCM_3.1 DEU 50.09 8.66 no 2"
    5341 (7) bnc --key cmbStreams "CLK11 BLG 1.0;CLK93 CNES 1.0"
    5342 (8) bnc --key uploadMountpointsOut "products.igs-ip.net,98756,TEST,letmein,IGS08,2,/Users/weber/BNC${GPSWD}.clk,,33,3,2;
    5343                                     www.euref-ip.net,333,TEST2,aaaaa,NAD83,2,,,33,5,5"
    5344 (9) bnc --key PPP/staTable "FFMJ1,100.0,100.0,100.0,100.0,100.0,100.0,0.1,3e-6,7777;
    5345                             CUT07,100.0,100.0,100.0,100.0,100.0,100.0,0.1,3e-6,7778"
    5346 </pre>
    5347 <p><h4>3.4 <a name="links">Further Reading</h3></p>
    53486922
    5349 <table>
    5350 <tr></tr>
    5351 <tr><td><b>Links</b></td></tr>
    5352 <tr><td>Ntrip &nbsp;</td><td><u>http://igs.bkg.bund.de/ntrip/index</u></td></tr>
    5353 <tr><td>EUREF-IP Ntrip Broadcaster &nbsp;</td><td><u>http://www.euref-ip.net/home</u></td></tr>
    5354 <tr><td>IGS-IP Ntrip Broadcaster &nbsp;</td><td><u>http://www.igs-ip.net/home</u></td></tr>
    5355 <tr><td>IGS products Ntrip Broadcaster &nbsp;</td><td><u>http://products.igs-ip.net/home</u></td></tr>
    5356 <tr><td>IGS M-GEX Ntrip Broadcaster &nbsp;</td><td><u>http://mgex.igs-ip.net/home</u></td></tr>
    5357 <tr><td>IGS Central Bureau Ntrip Broadcaster &nbsp;</td><td><u>http://rt.igs.org</u></td></tr>
    5358 <tr><td>IGS Real-time Service &nbsp;</td><td><u>http://rts.igs.org</u></td></tr>
    5359 <tr><td>Distribution of IGS-IP streams &nbsp;</td><td><u>http://www.igs.oma.be/real_time/</u></td></tr>
    5360 <tr><td>Completeness and latency of IGS-IP data &nbsp;</td><td><u>http://www.igs.oma.be/highrate/</u></td></tr>
    5361 <tr><td>Ntrip Broadcaster overview &nbsp;</td><td><u>http://www.rtcm-ntrip.org/home</u></td></tr>
    5362 <tr><td>Ntrip Open Source software code &nbsp;</td><td><u>http://software.rtcm-ntrip.org</u></td></tr>
    5363 <tr><td>EUREF-IP Project &nbsp;</td><td><u>http://www.epncb.oma.be/euref_IP</u></td></tr>
    5364 <tr><td>Real-time IGS Pilot Project &nbsp;</td><td><u>http://www.rtigs.net/pilot</u></td></tr>
    5365 <tr><td>Radio Technical Commission<br>for Maritime Services &nbsp;</td><td><u>http://www.rtcm.org</u>
    5366 </table>
    5367 
    5368 <br>
    5369 <table>
    5370 <tr><td><b>Publications</b></td></tr>
    5371 
    5372 <tr><td>Caissy, M., L. Agrotis, G. Weber, M. Hernandez-Pajares and U. Hugentobler (2012)</td><td>The International GNSS Real-Time Service. GPS World, June 1, 2012.</td></tr>
    5373 
    5374 <tr><td>Estey, L. H. and C. M. Meertens (1999)</td><td>TEQC: The Multi-Purpose Toolkit for GPS/GLONASS Data. GPS Solutions, Vol. 3, No. 1, pp. 42-49, 1999.</td></tr>
    5375 
    5376 <tr><td>Huisman, L., P. Teunissen and C. Hu (2012)</td><td>GNSS Precise Point Positioning in Regional Reference Frames Using Real-time Broadcast Corrections. Journal of Applied Geodesy, Vol. 6, pp15-23, 2012.</td></tr>
    5377 
    5378 <tr><td>Mervart, L., Z. Lukes, C. Rocken and T. Iwabuchi (2008)</td><td>Precise Point Positioning With Ambiguity Resolution in Real-Time. ION GNSS 2008.</td></tr>
    5379 
    5380 <tr><td>RTCM SC-104 (2011)</td><td>Amendment 1 to RTCM Standard 10410.1 Networked Transport of RTCM via Internet Protocol (Ntrip) - Version 2.0. RTCM Papter 139-2011-SC104-STD, 2011.</td></tr>
    5381 
    5382 <tr><td>Rupprecht, W. (2000)</td><td>DGPS-IP. <u>http://www.wsrcc.com/wolfgang/gps/dgps-ip.html</u>, 2000.</td></tr>
    5383 
    5384 <tr><td>Weber, G., D. Dettmering and H. Gebhard (2005a)</td><td>Networked Transport of RTCM via Internet Protocol (NTRIP). In: Sanso F. (Ed.): A Window on the Future, Proceedings of the IAG General Assembly, Sapporo, Japan, 2003, Springer Verlag, Symposia Series, Vol. 128, p. 60-64, 2005.</td></tr>
    5385 
    5386 <tr><td>Weber, G., D. Dettmering, H. Gebhard and R. Kalafus (2005b)</td><td>Networked Transport of RTCM via Internet Protocol (Ntrip), IP-Streaming for Real-Time GNSS Applications. ION GNSS 2005.</td></tr>
    5387 
    5388 <tr><td>Weber, G., and M. Honkala (2004)</td><td>The future is talking Ntrip. Newsletter, Trimble GmbH Raunheim, Germany, 2004.</td></tr>
    5389 
    5390 <tr><td>Weber, G. and L. Mervart (2009)</td><td>The BKG Ntrip Client (BNC), Report on EUREF Symposium 2007 in London. Mitteilungen des Bundesamtes fuer Kartographie und Geodaesie, Band 42, Frankfurt, 2009.</td></tr>
    5391 
    5392 <tr><td>Weber, G. and L. Mervart (2010)</td><td>Real-time Combination of GNSS Orbit and Clock Correction Streams Using a Kalman Filter Approach. ION GNSS 2010.</td></tr>
    5393 
    5394 <tr><td>Weber, G, L. Mervart, Z. Lukes, C. Rocken and J. Dousa (2007)</td><td>Real-time Clock and Orbit Corrections for Improved Point Positioning via Ntrip. ION GNSS 2007.</td></tr>
    5395 
    5396 <tr><td>Weber, G., L. Mervart, A. St&uuml;rze, A. R&uuml;lke and D. St&ouml;cker (2016)</td><td>BKG Ntrip Client, Version 2.12. Mitteilungen des Bundesamtes f&uuml;r Kartographie und Geod&auml;sie, Vol. 49, Frankfurt am Main, 2016.</td><tr>
    5397 
    5398 </table>
    5399 
    5400 <p><h4>3.5 <a name="abbrev">Abbreviations</h3></p>
    5401 <table>
    5402 
    5403 <tr><td>AC</td><td>Analysis Center</td></tr>
    5404 <tr><td>AFREF</td><td>IAG Reference Frame Sub-Commission for Africa</td></tr>
    5405 <tr><td>ANTEX</td><td>Antenna Exchange Format</td></tr>
    5406 <tr><td>APC</td><td>Antenna Phase Center</td></tr>
    5407 <tr><td>APREF</td><td>IAG Reference Frame Sub-Commission for Asia and Pacific</td></tr>
    5408 <tr><td>ARP</td><td>Antenna Reference Point</td></tr>
    5409 <tr><td>BKG</td><td>Bundesamt f&uuml;r Kartographie und  Geod&auml;sie</td></tr>
    5410 <tr><td>BNC</td><td>BNK Ntrip Client</td></tr>
    5411 <tr><td>BSW</td><td>Bernese GNSS Software</td></tr>
    5412 <tr><td>CC</td><td>Combination Center</td></tr>
    5413 <tr><td>CLI</td><td>Command Line Interface</td></tr>
    5414 <tr><td>CoM</td><td>Center Of Mass</td></tr>
    5415 <tr><td>DGNSS</td><td>Differential GNSS</td></tr>
    5416 <tr><td>DGPS-IP</td><td>Differential GPS via Internet Protocol</td></tr>
    5417 <tr><td>DMG</td><td>Disk Image, File</td></tr>
    5418 <tr><td>DREF91</td><td>Geodetic Datum for Germany 1991</td></tr>
    5419 <tr><td>ECEF</td><td>Earth-Centred-Earth-Fixed</td></tr>
    5420 <tr><td>EDGE</td><td>Enhanced Data Rates for GSM Evolution</td></tr>
    5421 <tr><td>ETRF2000</td><td>European Terrestrial Reference Frame 2000</td></tr>
    5422 <tr><td>EUREF</td><td>IAG Reference Frame Sub-Commission for Europe</td></tr>
    5423 <tr><td>EoE</td><td>End of Epoch</td></tr>
    5424 <tr><td>FKP</td><td>Fl&auml;chen-Korrektur-Parameter</td></tr>
    5425 <tr><td>FTP</td><td>File Transfer Protocol</td></tr>
    5426 <tr><td>GDA94</td><td>Geodetic Datum Australia 1994</td></tr>
    5427 <tr><td>GM</td><td>Google Maps</td></tr>
    5428 <tr><td>GNSS</td><td>Global Navigation Satellite System</td></tr>
    5429 <tr><td>GNU</td><td>GNU's Not Unix</td></tr>
    5430 <tr><td>GPL</td><td>General Public License</td></tr>
    5431 <tr><td>GPRS</td><td>General Packet Radio Service</td></tr>
    5432 <tr><td>GPSWD</td><td>GPS Week and Day</td></tr>
    5433 <tr><td>GSM</td><td>Global System for Mobile Communications</td></tr>
    5434 <tr><td>GUI</td><td>Graphical User Interface</td></tr>
    5435 <tr><td>HP MSM</td><td>High Precision Multiple Signal Messages</td></tr>
    5436 <tr><td>HR URA</td><td>High Rate User Range Accuracy</td></tr>
    5437 <tr><td>HTTP</td><td>Hypertext Transfer Protocol</td></tr>
    5438 <tr><td>HTTPS</td><td>Hypertext Transfer Protocol Secure</td></tr>
    5439 <tr><td>IAG</td><td>International Association of Geodesy</td></tr>
    5440 <tr><td>ICECAST</td><td>Streaming Media Server</td></tr>
    5441 <tr><td>IGS08</td><td>IGS Reference Frame 2008</td></tr>
    5442 <tr><td>IGS</td><td>International GNSS Service</td></tr>
    5443 <tr><td>IOD</td><td>Issue of Data</td></tr>
    5444 <tr><td>IP</td><td>Internet Protocol</td></tr>
    5445 <tr><td>ITRF2008</td><td>International Terrestrial Reference Frame 2008</td></tr>
    5446 <tr><td>L3</td><td>Ionosphere-Free Linear Combination Of Phase Observations</td></tr>
    5447 <tr><td>LAN</td><td>Local Area Network</td></tr>
    5448 <tr><td>LC</td><td>Linea Combination</td></tr>
    5449 <tr><td>M-GEX</td><td>Multi GNSS-Experiment</td></tr>
    5450 <tr><td>MAC</td><td>Master Auxiliary Concept</td></tr>
    5451 <tr><td>MJD</td><td>Modified Julian Date</td></tr>
    5452 <tr><td>MSI</td><td>Microsoft Installer, File</td></tr>
    5453 <tr><td>MSM</td><td>Multiple Signal Messages</td></tr>
    5454 <tr><td>MW</td><td>Melbourne W&uuml;bbena Linear Combination</td></tr>
    5455 <tr><td>NAD83</td><td>North American Datum 1983</td></tr>
    5456 <tr><td>NAREF</td><td>IAG Reference Frame Sub-Commission for North America</td></tr>
    5457 <tr><td>NMEA</td><td>National Marine Electronics Association Format</td></tr>
    5458 <tr><td>Ntrip</td><td>Networked Transport of RTCM via Internet Protocol</td></tr>
    5459 <tr><td>OSM</td><td>OpenStreetMap</td></tr>
    5460 <tr><td>OSR</td><td>Observation Space Representation</td></tr>
    5461 <tr><td>P3</td><td>Ionosphere-Free Linear Combination Of Code Observations</td></tr>
    5462 <tr><td>PDOP</td><td>Positional Dilution Of Precision</td></tr>
    5463 <tr><td>PNG</td><td>Portable Network Graphics</td></tr>
    5464 <tr><td>PPP</td><td>Precise Point Positioning</td></tr>
    5465 <tr><td>Qt</td><td>Cross-Platform Application Framework</td></tr>
    5466 <tr><td>REQC</td><td>RINEX Editing and Quality Checking</td></tr>
    5467 <tr><td>RINEX</td><td>Receiver Independent Exchange Format</td></tr>
    5468 <tr><td>RTCM SC-104</td><td>Radio Technical Commission for Maritime Services, Special Committee 104</td></tr>
    5469 <tr><td>RTK</td><td>Real Time Kinematic</td></tr>
    5470 <tr><td>RTKPLOT</td><td>View and Plot Positioning Solutions Software, Part of RTKLIB</td></tr>
    5471 <tr><td>RTNET</td><td>Real-Time Network Format</td></tr>
    5472 <tr><td>RTP</td><td>Real-Time Transport Protocol</td></tr>
    5473 <tr><td>RTSP</td><td>Real-Time Streaming Protocol</td></tr>
    5474 <tr><td>SBAS</td><td>Space Based Augmentation System</td></tr>
    5475 <tr><td>SINEX TRO</td><td>Troposphere Solution Independent Exchange Format</td></tr>
    5476 <tr><td>SINEX</td><td>Solution Independent Exchange Format</td></tr>
    5477 <tr><td>SIRGAS2000</td><td>Geodetic Datum for Latin America and Caribbean 2000</td></tr>
    5478 <tr><td>SIRGAS95</td><td>Geodetic Datum for Latin America and Caribbean 1995</td></tr>
    5479 <tr><td>SIRGAS</td><td>IAG Reference Frame Sub-Commission for Latin America and Caribbean</td></tr>
    5480 <tr><td>SP3</td><td>Standard Product # 3</td></tr>
    5481 <tr><td>SPP</td><td>Single Point Positioning</td></tr>
    5482 <tr><td>SSL</td><td>Secure Sockets Layer</td></tr>
    5483 <tr><td>SSR</td><td>State Space Representation</td></tr>
    5484 <tr><td>SVN</td><td>Subversion, Revision Control System</td></tr>
    5485 <tr><td>TCP</td><td>Transmission Control Protocol</td></tr>
    5486 <tr><td>TEQC</td><td>Translation, Editing and Quality Checking</td></tr>
    5487 <tr><td>TLS</td><td>Transport Layer Security</td></tr>
    5488 <tr><td>UDP</td><td>User Datagram Protocol</td></tr>
    5489 <tr><td>UMTS</td><td>Universal Mobile Telecommunications System</td></tr>
    5490 <tr><td>URA</td><td>User Range Accuracy</td></tr>
    5491 <tr><td>VRS</td><td>Virtual Reference Station</td></tr>
    5492 <tr><td>VTEC</td><td>Vertical Total Electron Content</td></tr>
    5493 
    5494 </table>
    5495 
    5496 <p><img src="IMG/screenshot44.png"/></p>
     6923          </div>
     6924        </div>
     6925      </div>
     6926      <div class="clearer"></div>
     6927    </div>
     6928    <div class="related" role="navigation" aria-label="related navigation">
     6929      <h3>Navigation</h3>
     6930      <ul>
     6931        <li class="nav-item nav-item-0"><a href="bnchelp.html#document-bnchelp">BNC 2.12 documentation</a> &#187;</li>
     6932      </ul>
     6933    </div>
     6934    <div class="footer" role="contentinfo">
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