Bernese GPS Software Version 5.0 - Bernese GNSS Software

6. Data Preprocessing
automated processing. In the case of preprocessing zero-difference files the corresponding
observation files may be added to the deletion list. If preprocessing single-difference files the
extraction program will also (try to) identify which of the two stations of the baseline was
causing the problems. The bad zero-difference file(s) may optionally be added to the “bad”
single-difference file(s) in the deletion list file.
If a baseline file was removed a new baseline should be created to make sure that the network
is complete. MPRXTR defines a new baseline which is listed in the output baseline definition
file. This file may then be used by program SNGDIF to actually create the new baseline.
Make sure that you do not forget to run MAUPRP for the newly created baseline. When
preprocessing zero-difference files the deletion of an observation file does not require any
other action.
6.6 Screening of Post-Fit Residuals
In the Bernese GPS Software Version 5.0 residual files may be created by the programs
GPSEST, MAUPRP, CODSPP, ORBGEN, and IONEST. These residual files are unformatted
binary files containing all the residuals of one program run. There are three different types
of residual files:
• Only linear combinations of L1 and L2 residuals are stored and may be displayed.
• L1 and L2 residuals are stored and may be displayed separately or in any linear
combination (only for residuals from program MAUPRP).
• Instead of observation residuals the radial, along track, and out of plane component
of orbit residuals are contained in residual files generated by ORBGEN.
The residual files may contain residuals
• on the zero-difference level (GPSEST, CODSPP, and IONEST),
• on double-difference level (GPSEST: two stations and two satellites resp. MAUPRP:
two satellites, two epochs), or
• on triple-difference level (MAUPRP: two stations, two satellites, two epochs).
Residual files may be analyzed in the Bernese GPS Software Version 5.0 by the two programs
REDISP and RESRMS.
6.6.1 Browsing the Residual Files (REDISP)
The panel “REDISP 2: Display Characterization” of program REDISP (”Menu>Service>Residual files
>Display residual file”) asks to select the units of the residual representation and the frequency
to be displayed (one of the frequencies processed). In addition you need to choose for each
residual file:
• for observation residuals: the station name(s), reference epoch, measurement type,
difference level, and a list of frequencies in the residual file.
• for satellite arc residuals: arc number, reference epoch, and the components RADial,
aLONg track, resp. OUT of plane of the residuals.
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