Bernese GPS Software Version 5.0 - Bernese GNSS Software

6.7 Marking of Observations
too. The result are pairs of code and phase files which contain for a station the same
epochs and the same satellites. This may be important for processing steps involving
both observation types (e.g., to make sure that all clocks in GPSEST are estimated
with phase and code measurements).
INITIALIZE: Ambiguities which are already resolved (see Chapter 8) in the baseline phase
observations header file are re-initialized (set to status “unresolved”).
6.7.2 Use of Satellite Problem File
The satellite problem file (the so-called “satcrux”-file, see Section 22.4.6) is located in the
general file directory (${X}/GEN). The user may exclude measurements of specific satellites
for a period of time by adding a corresponding entry in this file. The other important usage
of the satellite problem file is the setting of a new arc for a satellite. This topic is discussed
in Chapter 15.
The satellite problem file is updated daily in the routine processing for the IGS at CODE.
It is provided to the users of the Bernese GPS Software in the anonymous ftp account
of AIUB (http://www.aiub.unibe.ch/download/BSWUSER50/GEN/SAT_yyyy.CRX, where
yyyy is the four digit year).
If a satellite is specified to be bad for an observation epoch the processing programs of the
Bernese GPS Software (e.g., CODSPP, MAUPRP, and GPSEST) will not use the corresponding
measurements. The program RXOBV3 does not write the observations of a satellite into
the Bernese observation files if they are indicated as bad. The program MAUPRP will mark
the corresponding measurements in the preprocessed observation files. All other programs
do not consider the observations of bad satellites but they do not modify the observation
files.
PRN numbers of satellites that are currently not active are listed at the top of the file. These
entries prevent that “dummy” satellites enter the processing if occasionally appearing in
some RINEX observation files.
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