Bernese GPS Software Version 5.0 - Bernese GNSS Software

3.4 Create Station Files
The files IGS.STA and EUREF.STA are regularly updated from the files igs.snx resp.
euref.snx (maintained by the IGS/EUREF CBs) and made available athttp://www.aiub.
unibe.ch/download/BSWUSER50/STA. A skeleton of the station information file may also be
extracted from a SINEX file (e.g., ftp://ftp.igs.org/pub/station/general/igs.snx)
using the program SNX2STA (”Menu>Conversion>SINEX to station information”, program description
in Section 4.6.2). The SINEX file has to be copied into the campaign’s SOL-directory.
The program RNX2STA (”Menu>RINEX>RINEX utilities>Extract station information”, program description
in Section 4.2.5) provides another possibility to get a skeleton for this file. The header
information from a set of RINEX observation files in the campaign’s RAW-directory is extracted
into a station information file. Verify the information using observation protocols
or any other station setup description.
In any case, check and adapt the content of the station information file before using it in the
processing (”Menu>Campaign>Edit station files>Station information”). It is one of the most important
files because its content defines the station naming (must be consistent in all station files),
the equipment, and antenna eccentricities (must be defined in the “Phase center eccentricity”file)
used in the Bernese GPS Software. We refer to Section 4.2.3 for a detailed description
of importing observation RINEX files to Bernese format.
3.4.3 Other Station Files
A few more station files are necessary or may be useful for the data processing. Some
of them can be introduced into the PPP procedure that completes the list of a priori
coordinates/velocities.
• Create a FIX-file (station selection for reference sites in the processing, file description
in Section 22.8.12) using ”Menu>Campaign>Edit station files>Station selection lists”. If you select,
e.g., the coordinate file IGS 00 R.CRD in the dialogue “Select Skeleton Coordinate File”
the list will contain the reference sites of the IGS and needs no further manipulation.
• Create a PLD-file (tectonic plate assignment for the NUVEL-model, file description
in Section 22.8.8) for all your sites. You can use ”Menu>Campaign>Edit station files>Tectonic
plate assignment” to do this.
• The station name abbreviation table is used to generate the names of the Bernese observation
files (see Section 3.2). The abbreviation table may be created automatically
in the PPP procedure. If you want to have user defined values you may create the list
manually using ”Menu>Campaign>Edit station files>Abbreviation table”.
• Use the web-service athttp://www.oso.chalmers.se/~loading/ to get a table of the
ocean loading coefficients for your stations (default extension BLQ). See Section 22.8.11
for more details on how to create the file. Only approximate site coordinates are
required. If you have no a priori values at this stage of analysis it does not matter. The
BLQ-file is not mandatory for a PPP analysis and you may use the resulting coordinates
as input to create the ocean loading file. The file used for the processing at CODE is
available at http://www.aiub.unibe.ch/download/BSWUSER50/STA/FES2004.BLQ.
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