Changeset 1359 in ntrip


Ignore:
Timestamp:
Dec 27, 2008, 4:45:48 PM (15 years ago)
Author:
weber
Message:

* empty log message *

File:
1 edited

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  • trunk/BNC/bnchelp.html

    r1322 r1359  
    7070<p><a name="options"><h3>3. Options</h3></p>
    7171<p>
     72The usual handling of BNC is that you first select a number of streams from NTRIP broadcasters ('Add Streams'). 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 tabs to select a combination of processing options before you start the program ('Start'). Records of BNC's activities are shown in the 'Log' canvas on the bottom of the main window.
     73</p>
     74<p>
    7275All options for running BNC on Unix/Linux/Mac systems are saved in file ${HOME}/.config/BKG/BKG_NTRIP_Client.conf, see annexed 'Configuration File' example. On Windows systems options are saved in register BKG_NTRIP_Client. The self-explaining contents of the configuration file or the Windows register can easily be edited. Some options can be changed on-the-fly.
    7376</p>
     
    7982&nbsp; &nbsp; &nbsp; 3.4.1. <a href=#genlog>Logfile</a><br>
    8083&nbsp; &nbsp; &nbsp; 3.4.2. <a href=#genapp>Append Files</a><br>
    81 &nbsp; &nbsp; &nbsp; 3.4.3. <a href=#reconf>Reread Configuration</a><br>
    82 3.5. <a href=#rinex>RINEX - Observations</a><br>
     84&nbsp; &nbsp; &nbsp; 3.4.3. <a href=#genconf>Reread Configuration</a><br>
     85&nbsp; &nbsp; &nbsp; 3.4.4. <a href=#genstart>Auto Start</a><br>
     863.5. <a href=#rinex>RINEX Observations</a><br>
    8387&nbsp; &nbsp; &nbsp; 3.5.1. <a href=#rnxname>File Names</a><br>
    8488&nbsp; &nbsp; &nbsp; 3.5.2. <a href=#rnxdir>Directory</a><br>
     
    8892&nbsp; &nbsp; &nbsp; 3.5.6. <a href=#rnxscript>Script</a><br>
    8993&nbsp; &nbsp; &nbsp; 3.5.7. <a href=#rnxvers>Version</a><br>
    90 3.6. <a href=#ephemeris>RINEX - Ephemeris</a><br>
     943.6. <a href=#ephemeris>RINEX Ephemeris</a><br>
    9195&nbsp; &nbsp; &nbsp; 3.6.1. <a href=#ephdir>Directory</a><br>
    9296&nbsp; &nbsp; &nbsp; 3.6.2. <a href=#ephint>Interval</a><br>
    9397&nbsp; &nbsp; &nbsp; 3.6.3. <a href=#ephport>Port</a><br>
    9498&nbsp; &nbsp; &nbsp; 3.6.4. <a href=#ephvers>Version</a><br>
    95 3.7. <a href=#syncout>Feed Engine</a><br>
    96 &nbsp; &nbsp; &nbsp; 3.7.1. <a href=#syncport>Port (synchronized)</a><br>
    97 &nbsp; &nbsp; &nbsp; 3.7.2. <a href=#syncwait>Wait for Full Epoch</a><br>
    98 &nbsp; &nbsp; &nbsp; 3.7.3. <a href=#syncuport>Port (unsynchronized)</a><br>
    99 &nbsp; &nbsp; &nbsp; 3.7.4. <a href=#syncfile>File</a><br>
    100 &nbsp; &nbsp; &nbsp; 3.7.5. <a href=#syncsample>Sampling</a><br>
    101 3.8. <a href=#correct>Ephemeris Corrections</a><br>
    102 &nbsp; &nbsp; &nbsp; 3.8.1. <a href=#corrdir>Directory</a><br>
    103 &nbsp; &nbsp; &nbsp; 3.8.2. <a href=#corrint>Interval</a><br>
    104 &nbsp; &nbsp; &nbsp; 3.8.3. <a href=#corrport>Port</a><br>
    105 &nbsp; &nbsp; &nbsp; 3.8.4. <a href=#corrwait>Wait for Full Epoch</a><br>
    106 3.9. <a href=#advnote>Outages</a><br>
    107 &nbsp; &nbsp; &nbsp; 3.9.1. <a href=#obsrate>Observation Rate</a><br>
    108 &nbsp; &nbsp; &nbsp; 3.9.2. <a href=#advfail>Failure Threshold</a><br>
    109 &nbsp; &nbsp; &nbsp; 3.9.3. <a href=#advreco>Recovery Threshold</a><br>
    110 &nbsp; &nbsp; &nbsp; 3.9.4. <a href=#pause>Pause</a><br>
    111 &nbsp; &nbsp; &nbsp; 3.9.5. <a href=#advscript>Script</a><br>
    112 3.10. <a href=#misc>Miscellaneous</a><br>
    113 &nbsp; &nbsp; &nbsp; 3.10.1. <a href=#mountpoint>Mountpoint</a><br>
    114 &nbsp; &nbsp; &nbsp; 3.10.2. <a href=#perflog>Log Latency</a><br>
    115 &nbsp; &nbsp; &nbsp; 3.10.3. <a href=#scanrtcm>Scan RTCM</a><br>
    116 3.11. <a href=#mountpoints>Mountpoints</a><br>
    117 &nbsp; &nbsp; &nbsp; 3.11.1. <a href=#mountadd>Add Mountpoints</a><br>
    118 &nbsp; &nbsp; &nbsp; 3.11.2. <a href=#mounthost>Broadcaster Host and Port</a><br>
    119 &nbsp; &nbsp; &nbsp; 3.11.3. <a href=#mountuser>Broadcaster User and Password</a><br>
    120 &nbsp; &nbsp; &nbsp; 3.11.4. <a href=#mounttable>Get Table</a><br>
    121 &nbsp; &nbsp; &nbsp; 3.11.5. <a href=#mountdelete>Delete Mountpoints</a><br>
    122 &nbsp; &nbsp; &nbsp; 3.11.6. <a href=#mountedit>Edit Mountpoints</a><br>
    123 &nbsp; &nbsp; &nbsp; 3.11.7. <a href=#mountconf>Reconfigure Mountpoints On-the-fly</a><br>
    124 3.12. <a href=#start>Start</a><br>
    125 3.13. <a href=#stop>Stop</a><br>
    126 3.14. <a href=#cmd>Command Line Options</a><br>
    127 &nbsp; &nbsp; &nbsp; 3.14.1. <a href=#nw>No Window Mode</a><br>
    128 &nbsp; &nbsp; &nbsp; 3.14.2. <a href=#post>Offline Mode</a><br>
     993.7. <a href=#correct>Ephemeris Corrections</a><br>
     100&nbsp; &nbsp; &nbsp; 3.7.1. <a href=#corrdir>Directory</a><br>
     101&nbsp; &nbsp; &nbsp; 3.7.2. <a href=#corrint>Interval</a><br>
     102&nbsp; &nbsp; &nbsp; 3.7.3. <a href=#corrport>Port</a><br>
     103&nbsp; &nbsp; &nbsp; 3.7.4. <a href=#corrwait>Wait for Full Epoch</a><br>
     1043.8. <a href=#syncout>Feed Engine</a><br>
     105&nbsp; &nbsp; &nbsp; 3.8.1. <a href=#syncport>Port (synchronized)</a><br>
     106&nbsp; &nbsp; &nbsp; 3.8.2. <a href=#syncwait>Wait for Full Epoch</a><br>
     107&nbsp; &nbsp; &nbsp; 3.8.3. <a href=#syncuport>Port (unsynchronized)</a><br>
     108&nbsp; &nbsp; &nbsp; 3.8.4. <a href=#syncfile>File</a><br>
     109&nbsp; &nbsp; &nbsp; 3.8.5. <a href=#syncsample>Sampling</a><br>
     1103.9. <a href=#serial>Serial Link</a><br>
     111&nbsp; &nbsp; &nbsp; 3.9.1. <a href=#sermount>Mountpoint</a><br>
     112&nbsp; &nbsp; &nbsp; 3.9.2. <a href=#serport>Port Name</a><br>
     113&nbsp; &nbsp; &nbsp; 3.9.3. <a href=#serbaud>Baud Rate</a><br>
     114&nbsp; &nbsp; &nbsp; 3.9.4. <a href=#serparity>Parity</a><br>
     115&nbsp; &nbsp; &nbsp; 3.9.5. <a href=#serdata>Data Bits</a><br>
     116&nbsp; &nbsp; &nbsp; 3.9.6. <a href=#serstop>Stop Bits</a><br>
     117&nbsp; &nbsp; &nbsp; 3.9.7. <a href=#serauto>Auto NMEA</a><br>
     1183.10. <a href=#advnote>Outages</a><br>
     119&nbsp; &nbsp; &nbsp; 3.10.1. <a href=#obsrate>Observation Rate</a><br>
     120&nbsp; &nbsp; &nbsp; 3.10.2. <a href=#advfail>Failure Threshold</a><br>
     121&nbsp; &nbsp; &nbsp; 3.10.3. <a href=#advreco>Recovery Threshold</a><br>
     122&nbsp; &nbsp; &nbsp; 3.10.4. <a href=#pause>Pause</a><br>
     123&nbsp; &nbsp; &nbsp; 3.10.5. <a href=#advscript>Script</a><br>
     1243.11. <a href=#misc>Miscellaneous</a><br>
     125&nbsp; &nbsp; &nbsp; 3.11.1. <a href=#miscmount>Mountpoint</a><br>
     126&nbsp; &nbsp; &nbsp; 3.11.2. <a href=#miscperf>Log Latency</a><br>
     127&nbsp; &nbsp; &nbsp; 3.11.3. <a href=#miscscan>Scan RTCM</a><br>
     1283.12. <a href=#streams>Streams</a><br>
     129&nbsp; &nbsp; &nbsp; 3.12.1. <a href=#streamadd>Add Streams</a><br>
     130&nbsp; &nbsp; &nbsp; 3.12.2. <a href=#streamhost>Broadcaster Host and Port</a><br>
     131&nbsp; &nbsp; &nbsp; 3.12.3. <a href=#streamuser>Broadcaster User and Password</a><br>
     132&nbsp; &nbsp; &nbsp; 3.12.4. <a href=#streamtable>Get Table</a><br>
     133&nbsp; &nbsp; &nbsp; 3.12.5. <a href=#streamdelete>Delete Streams</a><br>
     134&nbsp; &nbsp; &nbsp; 3.12.6. <a href=#streamedit>Edit Streams</a><br>
     135&nbsp; &nbsp; &nbsp; 3.12.7. <a href=#streamconf>Reconfigure Streams On-the-fly</a><br>
     1363.13. <a href=#start>Start</a><br>
     1373.14. <a href=#stop>Stop</a><br>
     1383.15. <a href=#cmd>Command Line Options</a><br>
     139&nbsp; &nbsp; &nbsp; 3.15.1. <a href=#nw>No Window Mode</a><br>
     140&nbsp; &nbsp; &nbsp; 3.15.2. <a href=#post>Offline Mode</a><br>
    129141</p>
    130142
     
    183195<p><a name="genlog"><h4>3.4.1 Logfile - optional</h4></p>
    184196<p>
    185 Records of BNC's activities are shown in the Log section on the bottom of the main window. These logs can be saved into a file when a valid path is specified in the 'Log (full path)' field. The message log covers 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 'Log (full path)' is an empty option field, meaning that BNC logs will not saved into a file.
     197Records of BNC's activities are shown in the 'Log' canvas on the bottom of the main window. These logs can be saved into a file when a valid path is specified in the 'Log (full path)' field. The message log covers 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 'Log (full path)' is an empty option field, meaning that BNC logs will not saved into a file.
    186198</p>
    187199
     
    191203</p>
    192204
    193 <p><a name="reconf"><h4>3.4.3 Reread Configuration - optional</h4></p>
     205<p><a name="genconf"><h4>3.4.3 Reread Configuration - optional</h4></p>
    194206<p>
    195207When 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. 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. See annexed section 'Configuration File' for a Unix/Linux/Mac configuration file example and a list of on-the-fly changeable options.
    196208</p>
    197209
    198 <p><a name="rinex"><h4>3.5. RINEX - Observations</h4></p>
     210<p><a name="genstart"><h4>3.4.4 Auto Start - optional</h4></p>
     211<p>
     212You may like to auto-start BNC at startup time in window mode with preassigned configuration options. This may be required i.e. 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 systems).
     213</p>
     214<p>
     215 See BNC's command line option -nw for an auto-start of BNC in 'no window' mode.
     216</p>
     217
     218<p><a name="rinex"><h4>3.5. RINEX Observations</h4></p>
    199219<p>
    200220Observations will be converted to RINEX if they come in either RTCM Version 2.x, RTCM Version 3.x, or RTIGS format. BNC's RINEX Observation files generally contain C1, C2, P1, P2, L1, L2, S1, and S2 observations. In case an observation is unavailable, its value is set to zero '0.000'. Note that the 'RINEX TYPE' field in the RINEX Observation file header is always set to 'M(MIXED)' even if the file does not contain any GLONASS or SABAS data.
     
    203223<p><a name="rnxname"><h4>3.5.1 RINEX File Names</h4></p>
    204224<p>
    205 RINEX file names are derived by BNC from the first 4 characters of the corresponding mountpoint (4Char Station ID). For example, data from mountpoints FRANKFURT and WETTZELL will have hourly RINEX Observation files named</p>
     225RINEX file names are derived by BNC from the first 4 characters of the corresponding stream's mountpoint (4Char Station ID). For example, data from mountpoints FRANKFURT and WETTZELL will have hourly RINEX Observation files named</p>
    206226<p>
    207227FRAN{ddd}{h}.{yy}O<br>
     
    312332</p>
    313333
    314 <p><a name="ephemeris"><h4>3.6. Ephemeris</h4></p>
     334<p><a name="ephemeris"><h4>3.6. RINEX Ephemeris</h4></p>
    315335<p>
    316336Broadcast ephemeris can be saved as RINEX Navigation files when received via RTCM Version 3.x as message types 1019 (GPS) and 1020 (GLONASS) or via RTIGS records type 300. The file name convention follows the details given in section 'RINEX File Names' except that the first four characters are 'BRDC' and the last character is
     
    347367</p>
    348368
    349 <p><a name="syncout"><h4>3.7. Feed Engine</h4></p>
     369<p><a name="correct"><h4>3.7. Ephemeris Corrections</h4></p>
     370<p>
     371</p>
     372RTCM is in the process of developing new Version 3 messages to transport satellite clock and orbit corrections in real-time. Based on the latest available proposal, the following premature messages currently under discussion have been implemented in BNC:
     373<ul>
     374<li>Message type 4050: GPS orbit corrections to Broadcast Ephemeris</li>
     375<li>Message type 4051: GPS clock corrections to Broadcast Ephemeris</li>
     376<li>Message type 4052: GPS code biases</li>
     377<li>Message type 4053: GLONASS orbit corrections to Broadcast Ephemeris</li>
     378<li>Message type 4054: GLONASS clock corrections to Broadcast Ephemeris</li>
     379<li>Message type 4055: GLONASS code biases</li>
     380<li>Message type 4056: Combined orbit and clock corrections to GPS Broadcast Ephemeris</li>
     381<li>Message type 4057: Combined orbit and clock corrections to GLONASS Broadcast Ephemeris</li>
     382</ul>
     383<p>
     384RTCM Version 3 streams carrying these messages may be used i.e. to support real-time Precise Point Positioning (PPP) applications.
     385</p>
     386<p>
     387When using clocks from Broadcast Ephemeris (with or without corrections) and clocks from SP3 files in the same application, it is important to understand that Broadcast Ephemeris clocks - according to the Interface Control Documents (ICD) - are corrected for the 2nd-order relativistic effect whereas clocks from SP3 files are not. The 2nd-order relativistic effect is a priodic time correction defined as -2 (R * V) / c^2 and includes the scalar product of satallite position and velocity divided by the speed of light raised to the second power.
     388</p>
     389
     390<p><a name="corrdir"><h4>3.7.1 Directory - optional</h4></p>
     391<p>
     392Specify a directory for saving Ephemeris Corrections in files. If the specified directory does not exist, BNC will not create Ephemeris Correction files. Default value for Ephemeris Corrections 'Directory' is an empty option field, meaning that no Ephemeris Correction files will be created.
     393</p>
     394<p>
     395The file name convention for Ephemeris Correction files follows the convention for RINEX files except for the last character of the file name suffix which is set to "C".
     396</p>
     397
     398<p><a name="corrint"><h4>3.7.2 Interval - mandatory if 'Directory' is set</h4></p>
     399<p>
     400Select the length of the Ephemeris Correction files. The default value is 1 day.
     401</p>
     402
     403<p><a name="corrport"><h4>3.7.3 Port - optional</h4></p>
     404<p>
     405BNC can output epoch by epoch synchronized Ephemeris 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 Ephemeris Correction output via IP port is generated.
     406</p>
     407<p>
     408The source code for BNC comes with an example perl script 'test_bnc_eph.pl' that allows you to read BNC's Ephemeris Corrections from the IP port. In case of a stream carrying message types 4056 and 4057, the script produces ASCII records containing the following set of parameters:
     409</p>
     410<p>
     411<ul>
     412<li>GPS Week</li>
     413<li>Second in GPS Week</li>
     414<li>GNSS Indicator and Satellite Vehicle Pseudo Random Number</li>
     415<li>IOD refering to Broadcast Ephemeris set</li>
     416<li>Clock Correction to Broadcast Ephemeris [m]</li>
     417<li>Radial Component of Orbit Correction to Broadcast Ephemeris [m]</li>
     418<li>Along-track Component of Orbit Correction to Broadcast Ephemeris [m]</li>
     419<li>Cross-track Component of Orbit Correction to Broadcast Ephemeris [m]</li>
     420<li>Mountpoint</li>
     421</ul>
     422</p>
     423<p>
     424The following is an example output from two RTCM Version 3 streams (CLCK1 and CLCK4) containing message types 4056 and 4057:
     425<pre>
     426...
     4271490 115710.0 R17    18     -1.903      2.348   -1.343   -1.403 CLCK1
     4281490 115710.0 R10    18     -4.131      2.416   -0.646   -1.054 CLCK1
     4291490 115710.0 G27    97      5.291      1.201   -1.964    0.821 CLCK4
     4301490 115710.0 G26    14    -11.247      1.003   -1.168    0.074 CLCK4
     431...
     4321490 115711.0 R17    18     -1.902      2.349   -1.342   -1.403 CLCK1
     4331490 115711.0 R10    18     -4.131      2.415   -0.647   -1.052 CLCK1
     4341490 115711.0 G27    97      5.288      1.200   -1.964    0.820 CLCK4
     4351490 115711.0 G26    14    -11.246      1.004   -1.168    0.074 CLCK4
     436...
     437</pre>
     438</p>
     439
     440<p><a name="corrwait"><h4>3.7.4 Wait for Full Epoch - mandatory if 'Port' is set</h4></p>
     441<p>
     442When feeding a real-time GNSS engine waiting epoch by epoch for synchronized Ephemeris Corrections, BNC drops (only concering IP port output) whatever is received later than 'Wait for full epoch' seconds. A value of 2 to 5 seconds could be an appropriate choice for that, depending on the latency of the incoming Ephemeris Corrections stream and the delay acceptable by your application. A message such as "COCK1: Correction overaged by 5 sec" shows up in BNC's logfile if 'Wait for full epoch' is exceeded.
     443</p>
     444
     445<p><a name="syncout"><h4>3.8. Feed Engine</h4></p>
    350446<p>
    351447BNC can generate synchronized or unsynchronized observations epoch by epoch from all stations and satellites to feed a real-time GNSS engine. The output can be produced in a binary format through an IP port and/or a plain ASCII format to save the observations in a local file. It comprises the following observations where available:</p>
     
    357453</p>
    358454
    359 <p><a name="syncport"><h4>3.7.1 Port (synchronized) - optional</h4></p>
     455<p><a name="syncport"><h4>3.8.1 Port (synchronized) - optional</h4></p>
    360456<p>
    361457BNC can produce synchronized observations in binary format on your local host (IP 127.0.0.1) through an IP 'Port'. Specify an IP port number here to activate this function. The default is an empty option field, meaning that no binary output is generated.</p>
     
    409505</p>
    410506<p>
    411 Note that any socket connection of an application to BNC's synchronized observations 'Port' is recorded in the Log section on the bottom of the main window together with a connection counter, leading to log records like 'New Connection # 1'.
    412 </p>
    413 
    414 <p><a name="syncwait"><h4>3.7.2 Wait for Full Epoch - mandatory if 'Port (synchronized)' is set</h4></p>
     507Note that any socket connection of an application to BNC's synchronized observations 'Port' is recorded in the 'Log' canvas on the bottom of the main window together with a connection counter, leading to log records like 'New Connection # 1'.
     508</p>
     509
     510<p><a name="syncwait"><h4>3.8.2 Wait for Full Epoch - mandatory if 'Port (synchronized)' is set</h4></p>
    415511<p>
    416512When feeding a real-time GNSS engine waiting for synchronized input epoch by epoch, BNC drops whatever is received later than 'Wait for full 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 epoch' is 5 seconds.
     
    420516</p>
    421517
    422 <p><a name="syncuport"><h4>3.7.3 Port (unsynchronized) - optional</h4></p>
     518<p><a name="syncuport"><h4>3.8.3 Port (unsynchronized) - optional</h4></p>
    423519An application may want to receive unsynchronized observations from reference stations. If so, BNC can produce such unsynchronized observations in binary format on your local host (IP 127.0.0.1) through an IP 'Port'. Specify an IP port number here to activate this function. The default is an empty option field, meaning that no binary unsynchronized output is generated.</p>
    424520
     
    427523</p>
    428524<p>
    429 Note that any socket connection of an application to BNC's unsynchronized observations 'Port' is recorded in the Log section on the bottom of the main window together with a connection counter, leading to log records like 'New Connection # 1'.
    430 </p>
    431 
    432 
    433 <p><a name="syncfile"><h4>3.7.4 File - optional</h4></p>
     525Note that any socket connection of an application to BNC's unsynchronized observations 'Port' is recorded in the 'Log' canvas on the bottom of the main window together with a connection counter, leading to log records like 'New Connection # 1'.
     526</p>
     527
     528
     529<p><a name="syncfile"><h4>3.8.4 File - optional</h4></p>
    434530<p>
    435531Specifies the full path to a 'File' where synchronized or unsynchronized observations are saved in plain ASCII format. The default value is an empty option field, meaning that no ASCII output file is created.
     
    439535</p>
    440536
    441 <p><a name="syncsample"><h4>3.7.5 Sampling - mandatory if 'File' or 'Port' is set</h4></p>
     537<p><a name="syncsample"><h4>3.8.5 Sampling - mandatory if 'File' or 'Port' is set</h4></p>
    442538<p>
    443539Select the observation output sampling interval in seconds. A value of zero '0' tells BNC to send/store all received epochs. This is the default value.
    444 <p>
    445 
    446 <p><a name="correct"><h4>3.8. Ephemeris Corrections</h4></p>
    447 <p>
    448 </p>
    449 RTCM is in the process of developing new Version 3 messages to transport satellite clock and orbit corrections in real-time. Based on the latest available proposal, the following premature messages currently under discussion have been implemented in BNC:
    450 <ul>
    451 <li>Message type 4050: GPS orbit corrections to Broadcast Ephemeris</li>
    452 <li>Message type 4051: GPS clock corrections to Broadcast Ephemeris</li>
    453 <li>Message type 4052: GPS code biases</li>
    454 <li>Message type 4053: GLONASS orbit corrections to Broadcast Ephemeris</li>
    455 <li>Message type 4054: GLONASS clock corrections to Broadcast Ephemeris</li>
    456 <li>Message type 4055: GLONASS code biases</li>
    457 <li>Message type 4056: Combined orbit and clock corrections to GPS Broadcast Ephemeris</li>
    458 <li>Message type 4057: Combined orbit and clock corrections to GLONASS Broadcast Ephemeris</li>
    459 </ul>
    460 <p>
    461 RTCM Version 3 streams carrying these messages may be used i.e. to support real-time Precise Point Positioning (PPP) applications.
    462 </p>
    463 <p>
    464 When using clocks from Broadcast Ephemeris (with or without corrections) and clocks from SP3 files in the same application, it is important to understand that Broadcast Ephemeris clocks - according to the Interface Control Documents (ICD) - are corrected for the 2nd-order relativistic effect whereas clocks from SP3 files are not. The 2nd-order relativistic effect is a priodic time correction defined as -2 (R * V) / c^2 and includes the scalar product of satallite position and velocity divided by the speed of light raised to the second power.
    465 </p>
    466 
    467 <p><a name="corrdir"><h4>3.8.1 Directory - optional</h4></p>
    468 <p>
    469 Specify a directory for saving Ephemeris Corrections in files. If the specified directory does not exist, BNC will not create Ephemeris Correction files. Default value for Ephemeris Corrections 'Directory' is an empty option field, meaning that no Ephemeris Correction files will be created.
    470 </p>
    471 <p>
    472 The file name convention for Ephemeris Correction files follows the convention for RINEX files except for the last character of the file name suffix which is set to "C".
    473 </p>
    474 
    475 <p><a name="corrint"><h4>3.8.2 Interval - mandatory if 'Directory' is set</h4></p>
    476 <p>
    477 Select the length of the Ephemeris Correction files. The default value is 1 day.
    478 </p>
    479 
    480 <p><a name="corrport"><h4>3.8.3 Port - optional</h4></p>
    481 <p>
    482 BNC can output epoch by epoch synchronized Ephemeris 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 Ephemeris Correction output via IP port is generated.
    483 </p>
    484 <p>
    485 The source code for BNC comes with an example perl script 'test_bnc_eph.pl' that allows you to read BNC's Ephemeris Corrections from the IP port. In case of a stream carrying message types 4056 and 4057, the script produces ASCII records containing the following set of parameters:
    486 </p>
    487 <p>
    488 <ul>
    489 <li>GPS Week</li>
    490 <li>Second in GPS Week</li>
    491 <li>GNSS Indicator and Satellite Vehicle Pseudo Random Number</li>
    492 <li>IOD refering to Broadcast Ephemeris set</li>
    493 <li>Clock Correction to Broadcast Ephemeris [m]</li>
    494 <li>Radial Component of Orbit Correction to Broadcast Ephemeris [m]</li>
    495 <li>Along-track Component of Orbit Correction to Broadcast Ephemeris [m]</li>
    496 <li>Cross-track Component of Orbit Correction to Broadcast Ephemeris [m]</li>
    497 <li>Mountpoint</li>
    498 </ul>
    499 </p>
    500 <p>
    501 The following is an example output from two RTCM Version 3 streams (CLCK1 and CLCK4) containing message types 4056 and 4057:
     540</p>
     541
     542<p><a name="serial"><h4>3.9. Serial Link</h4></p>
     543<p>
     544You may use BNC to feed a serial connected device like an GNSS rover. For that one of the incoming streams can be forwarded to a serial port.
     545</p>
     546
     547<p><a name="sermount"><h4>3.9.1 Mountpoint - optional</h4></p>
     548<p>
     549Enter a 'Mountpoint' to forward its corresponding stream to a serial connected device.
     550</p>
     551<p>
     552When selecting the serial communication options listed below, make sure that you pick those confiured to the serial connected device.
     553</p>
     554
     555<p><a name="serport"><h4>3.9.2 Port Name - mandatory if 'Mountpoint' is set</h4></p>
     556<p>
     557Enter the serial 'Port name' selected on your host for communication with the serial connected device. Valid port names are
     558</p>
    502559<pre>
    503 ...
    504 1490 115710.0 R17    18     -1.903      2.348   -1.343   -1.403 CLCK1
    505 1490 115710.0 R10    18     -4.131      2.416   -0.646   -1.054 CLCK1
    506 1490 115710.0 G27    97      5.291      1.201   -1.964    0.821 CLCK4
    507 1490 115710.0 G26    14    -11.247      1.003   -1.168    0.074 CLCK4
    508 ...
    509 1490 115711.0 R17    18     -1.902      2.349   -1.342   -1.403 CLCK1
    510 1490 115711.0 R10    18     -4.131      2.415   -0.647   -1.052 CLCK1
    511 1490 115711.0 G27    97      5.288      1.200   -1.964    0.820 CLCK4
    512 1490 115711.0 G26    14    -11.246      1.004   -1.168    0.074 CLCK4
    513 ...
     560Windows:       COM1, COM2
     561Linux:         /dev/ttyS0, /dev/ttyS1
     562FreeBSD:       /dev/ttyd0, /dev/ttyd1
     563Digital Unix:  /dev/tty01, /dev/tty02
     564HP-UX:         /dev/tty1p0, /dev/tty2p0
     565SGI/IRIX:      /dev/ttyf1, /dev/ttyf2
     566SunOS/Solaris: /dev/ttya, /dev/ttyb
    514567</pre>
    515 </p>
    516 
    517 <p><a name="corrwait"><h4>3.8.4 Wait for Full Epoch - mandatory if 'Port' is set</h4></p>
    518 <p>
    519 When feeding a real-time GNSS engine waiting epoch by epoch for synchronized Ephemeris Corrections, BNC drops (only concering IP port output) whatever is received later than 'Wait for full epoch' seconds. A value of 2 to 5 seconds could be an appropriate choice for that, depending on the latency of the incoming Ephemeris Corrections stream and the delay acceptable by your application. A message such as "COCK1: Correction overaged by 5 sec" shows up in BNC's logfile if 'Wait for full epoch' is exceeded.
    520 </p>
    521 
    522 <p><a name="advnote"><h4>3.9. Outages</h4></p>
     568
     569<p><a name="serbaud"><h4>3.9.3 Baud Rate - mandatory if 'Mountpoint' is set</h4></p>
     570<p>
     571Select a 'Baud rate' for the serial link. Note that using a high baud rate is recommended.
     572</p>
     573
     574<p><a name="serparity"><h4>3.9.4 Parity - mandatory if 'Mountpoint' is set</h4></p>
     575<p>
     576Select the 'Parity' for the serial link. Note that parity is often set to 'NONE'.
     577</p>
     578
     579<p><a name="serdata"><h4>3.9.5 Data Bits - mandatory if 'Mountpoint' is set</h4></p>
     580<p>
     581Select the number of 'Data bits' for the serial link. Note that often '8' data bits are used.
     582</p>
     583
     584<p><a name="serstop"><h4>3.9.6 Stop Bits - mandatory if 'Mountpoint' is set</h4></p>
     585<p>
     586Select the number of 'Stop bits' for the serial link. Note that often '1' stop bit is used.
     587</p>
     588
     589<p><a name="serauto"><h4>3.9.7 Auto NMEA - optional</h4></p>
     590<p>
     591Tick 'Auto NMEA' to forward NMEA-GGA messages (or any other message) coming from your serial connected device to the NTRIP brodacaster.</p>
     592<p>
     593This option replaces BNC's simulation of an initial NMEA-GGA message based on approximate latitude/longitude from the broadcaster's source-table. Note that sending valid NMEA-GGA strings (simulated or coming from your serial connected device) to the NTRIP broadcaster is required for receiving virtual reference station (VRS) streams.
     594</p>
     595
     596<p><a name="advnote"><h4>3.10. Outages</h4></p>
    523597
    524598<p>
     
    532606</p>
    533607<p>
    534 Outage and corruption events are reported in the Log file/section. They can also be passed on as parameters to a shell script or batch file to generate an advisory note to BNC operator or affected stream providers. This functionality lets users utilise BNC as a real-time performance monitor and alarm system for a network of GNSS reference stations.
    535 </p>
    536 
    537 <p><a name="obsrate"><h4>3.9.1 Observation Rate - mandatory if 'Failure threshold', 'Recovery threshold', 'Pause' and 'Script' is set</h4></p>
     608Outage and corruption events are reported in the 'Log' file/canvas. They can also be passed on as parameters to a shell script or batch file to generate an advisory note to BNC operator or affected stream providers. This functionality lets users utilise BNC as a real-time performance monitor and alarm system for a network of GNSS reference stations.
     609</p>
     610
     611<p><a name="obsrate"><h4>3.10.1 Observation Rate - mandatory if 'Failure threshold', 'Recovery threshold', 'Pause' and 'Script' is set</h4></p>
    538612<p>
    539613BNC 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 priory estimate of the expected observation rate of the incoming streams.</p><p>An empty option field (default) means that you don't want an explicit information from BNC about stream outages and incoming streams that can not be decoded and that the special procedure for handling of corrupted streams is by-passed (decoding attempt will never get paused).
    540614</p>
    541615
    542 <p><a name="advfail"><h4>3.9.2 Failure Threshold - optional</h4></p>
     616<p><a name="advfail"><h4>3.10.2 Failure Threshold - optional</h4></p>
    543617<p>
    544618Event '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 so not to innundate user with too many event reports.
     
    548622</p>
    549623
    550 <p><a name="advreco"><h4>3.9.3 Recovery Threshold - optional</h4></p>
     624<p><a name="advreco"><h4>3.10.3 Recovery Threshold - optional</h4></p>
    551625<p>
    552626Once a 'Begin_Failure' or 'Begin_Corrupted' event has been reported, BNC will check for when the stream again becomes available or uncorrupted. Event 'End_Failure' or 'End_Corrupted' will be reported as soon as valid observations are again detected continuously throughout the 'Recovery threshold' time span. The default value is set to 5 minutes and is recommended so not to innundate users with too many event reports. 
     
    556630</p>
    557631
    558 <p><a name="pause"><h4>3.9.4 Pause - optional</h4></p>
     632<p><a name="pause"><h4>3.10.4 Pause - optional</h4></p>
    559633<p>
    560634In case of a corrupted stream, the decoding process can be paused and decodings are then attempted again at decreasing rate. BNC will first attempt to decode again after a 30 second lag and if unsuccessful, make another attempt within 60 seconds after the previous attempt. If it is still unsuccessful, it will make another attempt to decode within 120 seconds after the previous attempt and so on. Each decoding attempt doubles the wait time since the previous attempt. The maximum wait time between attempts is limited to 960 seconds. Tick 'Pause' to activate this function. Note that it is only effective if an 'Observation rate' is specified.
     
    564638</p>
    565639
    566 <p><a name="advscript"><h4>3.9.5 Script - optional </h4></p>
    567 <p>
    568 As mentioned previously, BNC can trigger a shell script or a batch file to be executed when one of the events described are 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 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 systems) together with date and time information.
     640<p><a name="advscript"><h4>3.10.5 Script - optional </h4></p>
     641<p>
     642As mentioned previously, BNC can trigger a shell script or a batch file to be executed when one of the events described are 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 systems) together with date and time information.
    569643</p>
    570644<p>
     
    593667</p>
    594668
    595 <p><a name="misc"><h4>3.10. Miscellaneous</h4></p>
     669<p><a name="misc"><h4>3.11. Miscellaneous</h4></p>
    596670<p>
    597671This section describes a number of miscellaneous options which can be applied for a single stream (mountpoint) or for all configured streams.
    598672</p>
    599673
    600 <p><a name="mountpoint"><h4>3.10.1 Mountpoint - optional </h4></p>
     674<p><a name="miscmount"><h4>3.11.1 Mountpoint - optional </h4></p>
    601675<p>
    602676Specify 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 don't want BNC to apply any of these options.
    603677</p>
    604678
    605 <p><a name="perflog"><h4>3.10.2 Log Latency - optional </h4></p>
     679<p><a name="miscperf"><h4>3.11.2 Log Latency - optional </h4></p>
    606680<p>
    607681 BNC can average latencies per stream over a certain period of GPS time, the 'Performance log' interval. Mean latencies are calculated from the individual latencies of at most one (first incoming) observation or correction to Broadcast Ephemeris per second. Note that computing correct latencies requires the clock of the host computer to be properly synchronized.
     
    621695</p>
    622696<p>
    623 Latencies of observations or corrections to Broadcast Ephemeris and statistical information can be recorded in the Log file/section at the end of each 'Performance log' interval. A typical output from a 1 hour 'Performance log' interval would be:
     697Latencies of observations or corrections to Broadcast Ephemeris and statistical information can be recorded in the 'Log' file/canvas at the end of each 'Performance log' interval. A typical output from a 1 hour 'Performance log' interval would be:
    624698</p>
    625699<pre>
     
    631705
    632706
    633 <p><a name="scanrtcm"><h4>3.10.3 Scan RTCM - optional</h4></p>
    634 <p>
    635 When configuring a GNSS receiver for RTCM stream generation, the setup interface may not provide details about RTCM message types. As reliable information concerning stream contents should be available i.e. for NTRIP broadcaster operators to maintain the broadcaster's sourcetable, BNC allows to scan RTCM streams for incoming message types and printout some of the contained meta-data. The idea for this option arose from 'InspectRTCM', a comprehensive stream analyzing tool written by D. Stoecker.
     707<p><a name="miscscan"><h4>3.11.3 Scan RTCM - optional</h4></p>
     708<p>
     709When configuring a GNSS receiver for RTCM stream generation, the setup interface may not provide details about RTCM message types. As reliable information concerning stream contents should be available i.e. 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. The idea for this option arose from 'InspectRTCM', a comprehensive stream analyzing tool written by D. Stoecker.
    636710</p>
    637711<p>
     
    657731</p>
    658732
    659 <p><a name="mountpoints"><h4>3.11. Mountpoints</h4></p>
    660 <p>
    661 Each stream on an NTRIP broadcaster is defined using a unique source ID called mountpoint. An NTRIP client like BNC access the desired data stream by referring to its mountpoint. Information about mountpoints is available through the source-table maintained by the NTRIP broadcaster. Note that mountpoints could show up in BNC more than once when retrieving streams from several NTRIP broadcasters.
    662 </p>
    663 
    664 Streams selected for retrieval are listed under the 'Mountpoints' section on BNC's main window. The list provides the following information extracted from source-table(s) produced by the NTRIP broadcasters:
     733<p><a name="streams"><h4>3.12. Streams</h4></p>
     734<p>
     735Each stream on an NTRIP broadcaster is defined using a unique source ID called mountpoint. An NTRIP client like BNC access the desired data stream by referring to its mountpoint. Information about streams and their mountpoints is available through the source-table maintained by the NTRIP broadcaster. Note that mountpoints could show up in BNC more than once when retrieving streams from several NTRIP broadcasters.
     736</p>
     737
     738Streams selected for retrieval are listed under the 'Streams' canvas section on BNC's main window. The list provides the following information extracted from source-table(s) produced by the NTRIP broadcasters:
    665739 
    666740<table>
     
    675749</table>
    676750
    677 <p><a name="mountadd"><h4>3.11.1 Add Mountpoints</h4></p>
    678 <p>
    679 Button 'Add Mountpoints' opens a window that allows user to select data streams from an NTRIP broadcaster according to their mountpoints.
    680 </p>
    681 
    682 <p><a name="mounthost"><h4>3.11.2 Broadcaster Host and Port - required</h4></p>
     751<p><a name="streamadd"><h4>3.12.1 Add Streams</h4></p>
     752<p>
     753Button 'Add Streams' opens a window that allows user to select data streams from an NTRIP broadcaster according to their mountpoints.
     754</p>
     755
     756<p><a name="streamhost"><h4>3.12.2 Broadcaster Host and Port - mandatory</h4></p>
    683757<p>
    684758Enter the NTRIP broadcaster host IP and port number. <u>http://www.rtcm-ntrip.org/home</u> provides information about known NTRIP broadcaster installations. Note that EUREF and IGS operate NTRIP broadcasters at <u>http://www.euref-ip.net/home</u> and <u>http://www.igs-ip.net/home</u>.
    685759</p>
    686760
    687 <p><a name="mountuser"><h4>3.11.3 Broadcaster User and Password - required for protected streams</h4></p>
     761<p><a name="streamuser"><h4>3.12.3 Broadcaster User and Password - mandatory for protected streams</h4></p>
    688762<p>
    689763Some streams on NTRIP broadcasters may be restricted. 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://igs.bkg.bund.de/index_ntrip_reg.htm</u> for access to protected streams on <u>www.euref-ip.net</u> and <u>www.igs-ip.net</u>.
    690764</p>
    691765
    692 <p><a name="mounttable"><h4>3.11.4 Get Table</h4></p>
     766<p><a name="streamtable"><h4>3.12.4 Get Table</h4></p>
    693767<p>
    694768Use 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.x, RTCM Version 3.x, or RTIGS format. RTCM Version 2.x streams must contain message types 18 and 19 or 20 and 21 while RTCM Version 3.x streams must contain GPS or SBAS message types 1002 or 1004 and may contain GLONASS message types 1010 or 1012, see 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.x streams containing message types 1019 (GPS) and 1020 (GLONASS) are required. Select your streams line by line, use +Shift and +Ctrl when necessary.
    695769</p>
    696770<p>
    697 The contents of data field 'nmea' tells you whether a stream retrieval needs to be initiated by BNC through sending an NMEA-GGA message carrying position coordinates (virtual reference station).
    698 </p>
    699 <p>
    700 Hit 'OK' to return to the main window. If you wish you can click on 'Add Mountpoints' and repeat the process again to retrieve mountpoints from different casters.
    701 </p>
    702 
    703 <p><a name="mountdelete"><h4>3.11.5 Delete Mountpoints</h4></p>
    704 <p>
    705 To remove a stream from the 'Mountpoints' list in the main window, highlight it by clicking on it and hit the 'Delete Mountpoints' button. You can also remove multiple mountpoints simultaneously by highlighting them using +Shift and +Ctrl.</p>
    706 
    707 <p><a name="mountedit"><h4>3.11.6 Edit Mountpoints</h4></p>
     771The contents 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).
     772</p>
     773<p>
     774Hit 'OK' to return to the main window. If you wish you can click on 'Add Streams' and repeat the process again to retrieve streams from different casters.
     775</p>
     776
     777<p><a name="streamdelete"><h4>3.12.5 Delete Streams</h4></p>
     778<p>
     779To remove a stream from the 'Streams' canvas in the main window, highlight it by clicking on it and hit the 'Delete Streams' button. You can also remove multiple streams simultaneously by highlighting them using +Shift and +Ctrl.</p>
     780
     781<p><a name="streamedit"><h4>3.12.6 Edit Streams</h4></p>
    708782<ul>
    709783<li>
     
    711785</li>
    712786<li>
    713 In case you need to log the raw data as is, BNC allows users to by-pass its decoders and and directly save the input in daily log files. To do this specify the decoder string as 'ZERO'. The generated file names are created from the characters of the 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 the raw data in a file named WTZZ0_070329.
    714 </li>
    715 <li>
    716 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 a Network-RTK software. This stream is customized to the exact latitude and longitude as shown in the 'lat' and 'long' columns under 'Mountpoints'. These VRS streams are indicated by a 'yes' in the 'nmea' column under 'Mountpoints' as well as in the source-table.
    717 <br>The default 'lat' and 'long' values are taken from the source-table however in most cases you would probably want to change this 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 mountpoints with a 'yes' in its 'nmea' column can be edited. The position must preferably be a point within the 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.
     787In case you need to log the raw data as is, BNC allows users to by-pass its decoders and and directly save the input in daily log files. To do this specify the decoder string as 'ZERO'. The generated file names 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 the raw data in a file named WTZZ0_070329.
     788</li>
     789<li>
     790BNC 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 a 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 messages.
     791<br>If NMEA-GGA messages are not coming from a serial connected GNSS rover, BNC simulates them from the default latitude and longitude of the source-table as shown in the 'lat' and 'lon' columns on the 'Streams' canvas. However, in most cases you would probably want to change these defaults according to your requirement. Double-click on 'lat' and 'lon' 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 must 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 'lon' used.
    718792<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.
    719793</li>
    720794</ul>
    721795
    722 <p><a name="mountconf"><h4>3.11.7 Reconfigure Mountpoints On-the-fly</h4></p>
    723 <p>
    724 The mountpoints selection can be changed on-the-fly without interrupting uninvolved threads in the running BNC process.
    725 </p>
    726 <p>
    727 <u>Window mode:</u> Hit 'Save & Activate Options' while BNC is in window mode and already processing data to let changes of your mountpoints selection immediately become effective.
    728 <p>
    729 <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 in 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 or Windows register become effective without terminating uninvolved threads. See annexed section 'Configuration File' for a Unix/Linux/Mac configuration file example and a list of other on-the-fly changeable options.
    730 </p>
    731 
    732 <p><a name="start"><h4>3.12. Start</h4></p>
     796<p><a name="streamconf"><h4>3.12.7 Reconfigure Streams On-the-fly</h4></p>
     797<p>
     798The streams selection can be changed on-the-fly without interrupting uninvolved threads in the running BNC process.
     799</p>
     800<p>
     801<u>Window mode:</u> Hit 'Save & Activate Options' while BNC is in window mode and already processing data to let changes of your streams selection immediately become effective.
     802<p>
     803<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 in 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 or Windows register become effective without terminating uninvolved threads. See annexed section 'Configuration File' for a Unix/Linux/Mac configuration file example and a list of other on-the-fly changeable options.
     804</p>
     805
     806<p><a name="start"><h4>3.13. Start</h4></p>
    733807<p>
    734808Hit 'Start' to start retrieving, decoding, and converting GNSS data streams in real-time. Note that 'Start' generally forces BNC to begin with fresh RINEX which might overwrite existing files when necessary unless the option 'Append files' is ticked.
    735809</p>
    736810
    737 <p><a name="stop"><h4>3.13. Stop</h4></p>
     811<p><a name="stop"><h4>3.14. Stop</h4></p>
    738812<p>
    739813Hit the 'Stop' button in order to stop BNC.
    740814</p>
    741815
    742 <p><a name="cmd"><h4>3.14. Command Line Options</h4></p>
     816<p><a name="cmd"><h4>3.15. Command Line Options</h4></p>
    743817<p>
    744818Command line options are available to run BNC in 'no window' mode or let it read data from a file in offline mode. BNC will then use processing options from the configuration file (Unix/Linux/Mac) or from the register BKG_NTRIP_Client (Windows). Note that the self-explaining contents of the configuration file or the Windows register can easily be edited.
    745819</p>
    746820
    747 <p><a name="nw"><h4>3.14.1 No Window Mode - optional</h4></p>
     821<p><a name="nw"><h4>3.15.1 No Window Mode - optional</h4></p>
    748822<p>
    749823Apart from its regular windows mode, BNC can be started on all systems as a background/batch job with command line option '-nw'. BNC will then run in 'no window' mode, using processing options from its configuration file. Terminate BNC using Windows Task Manager when running it in 'no window' mode on Windows systems.
     
    754828</p>
    755829
    756 <p><a name="post"><h4>3.14.2 Offline Mode - optional</h4></p>
     830<p><a name="post"><h4>3.15.2 Offline Mode - optional</h4></p>
    757831<p>
    758832Although BNC is primarily a real-time online tool, it can be run in offline mode to read data from a file for post processing purposes. Enter the following four command line options for that:
     
    862936<tr><td>Dec 2008 &nbsp;</td><td>Version 1.6 &nbsp;</td><td>[Mod] Fill blanc columns in RINEXv3 with 0.000<br> [Add] RTCMv3 decoder for clock and orbit corrections<br>[Add] Check RTCMv3 streams for incoming message types<br> [Add] Decode RTCMv2 message types 3, 20, 21, and 22<br> [Add] Loss of lock and lock time indicator<br> [Bug] Rounding error in RTCMv3 decoder concerning GLONASS height<br> [Mod] Accept GLONASS in RTCMv3 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 excentricities from RTCMv3<br> [Add] Reconfiguration on-the-fly<br> [Mod] Binary ouput of synchronized observations<br> [Add] Binary output of unsynchronized observations<br> [Bug] Fixed problem with joined RTCMv3 blocks</td></tr>
    863937<tr><td>Jan 2009 &nbsp;</td><td>Version 1.7 &nbsp;</td><td>
    864 [Add] Full proxy support<br> [Mod] Ntrip sourcetable request<br> [Bug] RINEX navigation file format<br> [Add] Support of NTRIP v2<br> [Add] Rover support via serial port</td></tr>
     938[Add] Full proxy support<br> [Mod] Ntrip source-table request<br> [Bug] RINEX navigation file format<br> [Add] Support of NTRIP v2<br> [Add] Rover support via serial port</td></tr>
    865939</table>
    866940</p>
     
    10501124adviseReco=5
    10511125adviseScript=
     1126autoStart=0
    10521127binSampl=0
    10531128casterHost=www.euref-ip.net
     
    10631138ephPath=/home/user/rinex
    10641139ephV3=2
     1140font="Helvetica [Adobe],9,-1,5,50,0,0,0,0,0"
    10651141logFile=/home/user/log.txt
    10661142makePause=0
     1143miscMount=
    10671144mountPoints=//user:pass@www.euref-ip.net:2101/ACOR0 RTCM_2.3 43.36 351.60 no, //user:pass@www.igs-ip.net:2101/FFMJ3 RTCM_3.0 41.58 1.40 no
    10681145obsRate=
     
    10821159rnxSkel=SKL
    10831160rnxV3=2
     1161scanRTCM=0
     1162serialAutoNMEA=0
     1163serialBaudRate=9600
     1164serialDataBits=8
     1165serialMountPoint=
     1166serialParity=NONE
     1167serialPortName=
     1168serialStopBits=1
    10841169waitTime=5
    10851170</pre>
     
    10931178<p>
    10941179<ul>
    1095 <li>'mountPoints' to change the selection of streams to be processed, see section 'Mountpoints',</li>
     1180<li>'mountPoints' to change the selection of streams to be processed, see section 'Streams',</li>
    10961181<li>'waitTime' to change the 'Wait for full epoch' option, see section 'Synchronized Observations', and</li>
    10971182<li>'binSampl' to change the 'Sampling' option, see section 'Synchronized Observations'.</li>
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