Changeset 3073 in ntrip for trunk/BNC/bnchelp.html


Ignore:
Timestamp:
Mar 4, 2011, 11:21:36 PM (13 years ago)
Author:
weber
Message:

Wording improved

File:
1 edited

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  • trunk/BNC/bnchelp.html

    r3070 r3073  
    4646<li>feed a stream into a GNSS receiver via serial communication link, and/or</li>
    4747<li>carry out a real-time Precise Point Positioning to determine a GNSS rover position, and/or</li>
    48 <li>simultaneously process several incoming orbit and clock corrections streams to produce, upload and save a combination solution.</li>
     48<li>simultaneously process several incoming orbit and clock corrections streams to produce, encode, upload and save a combination solution.</li>
    4949</ul>
    5050</p>
    … …  
    192192&nbsp; &nbsp; &nbsp; 3.11.5.1 <a href=#pppnmeafile>NMEA File</a><br>
    193193&nbsp; &nbsp; &nbsp; 3.11.5.2 <a href=#pppnmeaport>NMEA Port</a><br>
    194 &nbsp; &nbsp; &nbsp; 3.11.6 <a href=#ppprecant>Receiver Antenna</a><br>
     194&nbsp; &nbsp; &nbsp; 3.11.6 <a href=#ppprecant>Antennas</a><br>
    195195&nbsp; &nbsp; &nbsp; 3.11.6.1 <a href=#pppantex>ANTEX File</a><br>
    196 &nbsp; &nbsp; &nbsp; 3.11.6.2 <a href=#ppprecantenna>Antenna Name</a><br>
     196&nbsp; &nbsp; &nbsp; 3.11.6.2 <a href=#ppprecantenna>Receiver Antenna Name</a><br>
    197197&nbsp; &nbsp; &nbsp; 3.11.7 <a href=#pppsatant>Satellite Antenna</a><br>
    198198&nbsp; &nbsp; &nbsp; 3.11.7.1 <a href=#pppsatantignore>Ignore Offsets</a><br>
    … …  
    12761276</p>
    12771277
    1278 <p><a name="ppprecant"><h4>3.11.6 Receiver Antenna - optional</h4></p>
    1279 <p>
    1280 BNC allows to correct observations for receiver antenna phase center offsets and variations.
     1278<p><a name="ppprecant"><h4>3.11.6 Antennas - optional</h4></p>
     1279<p>
     1280BNC allows to correct observations for antenna phase center offsets and variations.
    12811281</p>
    12821282
    … …  
    12891289</p>
    12901290
    1291 <p><a name="ppprecantenna"><h4>3.11.6.2 Antenna Name - optional if 'ANTEX File' is set</h4></p>
     1291<p><a name="ppprecantenna"><h4>3.11.6.2 Receiver Antenna Name - optional if 'ANTEX File' is set</h4></p>
    12921292<p>
    12931293Specify the receiver's antenna name as defined in your ANTEX file. Observations will be corrected for the antenna phase center's offset which may result in a reduction of a few centimeters at max. Corrections for phase center variations are not yet applied by BNC. The specified name must consist of 20 characters. Add trailing blanks if the antenna name has less then 20 characters. Examples:
    … …  
    13041304<p><a name="pppsatant"><h4>3.11.7 Satellite Antenna - optional</h4></p>
    13051305<p>
    1306 BNC allows to correct observations for satellite antenna phase center offsets.
     1306BNC allows to correct observations for satellite antenna phase center offsets. (This option is not yet implemented.)
    13071307</p>
    13081308
    … …  
    13961396<p><a name="combimounttab"><h4>3.12.1 Combination Table - optional</h4></p>
    13971397<p>
    1398 Hit the 'Add Row' button then double click on the 'Mountpoint' field, enter a Broadcast Ephemeris corrections mountpoint from the 'Streams' section below 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 stream. Finally, double click on the 'Weight' field to enter a weight to be applied to this stream in the combination. The combination process will start when at least two corrections streams are configured for the combination.
    1399 </p>
    1400 <p>
    1401 Note that an appropriate 'Wait for full epoch' value needs to be specified for the combination under the 'Broadcast Corrections' tab. A value of '15' sec would make sense for that if the update rate of incoming clock corrections is i.e. 10 sec.
    1402 </p>
    1403 <p>
    1404 Note further that the sequence of entries in the 'Combination Table' is of importance. BNC considers the first AC in the 'Combination Table' as the 'Master AC'. The orbit information in the final combination stream is just copied from the 'Master AC's orbits. Moreover, the update rate of the combination product is defined by the update rate of the 'Master AC's stream. If the incoming streams have different rates, only epochs that correspond to the 'Master AC's update rate are used. Skipped epochs are however stored in the plain ASCII formated files mentioned below. It means that the 'Master AC' is responsible for two things: the satellite positions and the combination rate.
     1398Hit the 'Add Row' button then double click on the 'Mountpoint' field, enter a Broadcast Ephemeris corrections 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 stream. Finally, double click on the 'Weight' field to enter a weight to be applied to this stream in the combination. The combination process will start when at least two corrections streams are configured for combination.
     1399</p>
     1400<p>
     1401Note that an appropriate 'Wait for full epoch' value needs to be specified for the combination under the 'Broadcast Corrections' tab. Example: a value of '15' sec would make sense if the update rate of incoming clock corrections is 10 sec.
     1402</p>
     1403<p>
     1404Note further that the sequence of entries in the 'Combination Table' is of importance. BNC considers the first AC in the 'Combination Table' as the 'Master AC'. The orbit information in the final combination stream is then just copied from the 'Master AC's orbits. Moreover, the update rate of the combination product is defined by the update rate of the 'Master AC's stream. If incoming streams have different rates, only epochs that correspond to the 'Master AC's update rate are used. Skipped epochs show however up in plain ASCII formated files described below. This means that the 'Master AC' is responsible for two things: the satellite positions and the combination rate.
    14051405</p>
    14061406<p>
    … …  
    14151415<p><a name="combimountpnt"><h4>3.12.2 Mountpoint - optional if 'Combination Table' entries are specified</h4></p>
    14161416<p>
    1417 Enter a mountpoint string for the combination stream. The combination will only be carried out if such a mountpoint is defined.
    1418 </p>
    1419 <p>
    1420 If 'Host', 'Port' and 'Password' are set, the combination stream will be encoded in RTCM's premature so-called 'State Space Representation' (SSR) messages and uploaded to the specified broadcaster following the NTRIP Version 1.0 transport protocol. The update rate of messages is 10 seconds.
     1417Enter a mountpoint string for the combination stream. If 'Host', 'Port' and 'Password' are set, the combination stream will be encoded in RTCM's premature so-called 'State Space Representation' (SSR) messages and uploaded to the specified broadcaster following the NTRIP Version 1.0 transport protocol.
    14211418</p>
    14221419<p>
    … …  
    14241421</p>
    14251422<p>
    1426 Default is an empty option field meaning that you don't want BNC to combine orbit and clock corrections streams.
     1423Default is an empty option field meaning that you don't want BNC to upload combined orbit and clock corrections streams to an NTRIP Broadcaster and you also don't want to save correctors in plain ASCII formated files.
    14271424</p>
    14281425
    14291426<p><a name="combihost"><h4>3.12.3 Host, Port, Password - optional if 'Mountpoint' is set</h4></p>
    14301427<p>
    1431 Specify the domain name or IP number of an Ntrip Broadcaster for uploading the combination stream. Furthermore, specify the caster's listening IP port and an upload password.
     1428Specify the domain name or IP number of an NTRIP Broadcaster for uploading the combination stream. Furthermore, specify the caster's listening IP port and an upload password.
    14321429</p>
    14331430
    … …  
    14371434</p>
    14381435<p>
    1439 The interval for saving the ASCII files (or: length of the files) is defined by option 'Interval' under the 'Broadcast Corrections' tab. File names are generated from the 'Mountpoint' string specified for the combination and follow the RINEX observation file name convention.
     1436The interval for saving the ASCII files (or: length of the files) is defined by option 'Interval' under the 'Broadcast Corrections' tab. File names are generated from the 'Mountpoint' string specified for the combination. They follow the RINEX observation file name convention.
    14401437</p>
    14411438<p>
    … …  
    14481445</p>
    14491446<p>
    1450 As an SP3 file contents should be refered to the satellite's Center of Mass (CoM) while correctors are refered to the satellite's Antenna Phase Center (APC), an offset has to be applied as taken from an IGS ANTEX file (see section 'ANTEX File'). You should therefore specify the &quot;ANTEX File' path under tab 'PPP (2)' if you want to save a combination product in SP3 format. If you don't specify an 'ANTEX File' path, the SP3 file contents will be refered to the satellites APCs.
    1451 <p>
    1452 The file names for the daily SP3 files follows the convention for SP3 file names. The first three characters of each file name is set to 'BNC'.
     1447As an SP3 file contents should be refered to the satellite's Center of Mass (CoM) while correctors are refered to the satellite's Antenna Phase Center (APC), an offset has to be applied as which is available from an IGS ANTEX file (see section 'ANTEX File'). You should therefore specify the 'ANTEX File' path under tab 'PPP (2)' if you want to save a combination product in SP3 format. If you don't specify an 'ANTEX File' path there, the SP3 file contents will be refered to the satellites APCs.
     1448<p>
     1449The file names for the daily SP3 files follow the convention for SP3 file names. The first three characters of each file name are set to 'BNC'.
    14531450</p>
    14541451
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