Bernese GPS Software Version 5.0 - Bernese GNSS Software

20. Processing Examples
and IGS 00B for the “Merged CRD/VEL file name” (V CRDMRG). Alternatively, the coordinates
and velocities from all non-reference stations can be added to the reference files using program
CRDMERGE (”Menu>Service>Coordinate tools>Merge coordinate files”).
To introduce the new realization of the reference frame for a network solution you have
to adapt the filenames for the “INPUT FILES” in panel “COOVEL 1: Filenames” (from IGS 00
to IGS 00B) that is called in the script COOVEL (PID 002) in the RNX2SNX.PCF and the
CLKDET.PCF. In addition you have to copy the new list of reference stations in the copy
scripts (R2S COP resp. CLK COP):
# - FIX file
$dirDat = "${dirFix}";
$filDat = "IGS_00.FIX"; # original
$filDat = "IGS_00B.FIX"; # updated
copy("${dirDat}${filDat}","${dirFix}REF${yyssss}.${extFix}") or
die "${dirDat}${filDat} not found";
Of course, the same procedure can be done to switch to any other set of reference frame files.
This can, e.g., be useful for a local densification of a previously analyzed regional network.
Anyhow, if you change from the official IGS realization of the ITRF to another reference
frame, make sure that the station positions are consistent with the reference frame of the
satellite orbits.
If the reference epoch of a new reference frame is different from January, 1st 2000, you have
to adapt the reference epoch in the PPP example at the PID 403 for program COOVEL
(”Menu>BPE>Edit PCF program input files”).
Please note that an update to the IGS05 reference frame needs to be accompanied with the
use of the new absolute antenna phase center model (see next section for how to change the
antenna model as well as Section 10.2.1 for available files from the ITRF2005).
20.5.4 Change of the Antenna Models
The provided examples still use the old antenna phase model as it was used by the IGS
for many years (relative receiver antenna phase center models, no phase center variations
for the satellites, and ignoring the receiver antenna radomes). To start using the radome
information and the new antenna model (absolute receiver antenna models, phase center
variations also for the satellites, and considering the receiver antenna radomes) is well
prepared for the examples since the release from “15-Dec-2006” of the Bernese GPS Software
(see BSW Mail 0233).
To switch to the new absolute antenna modeling you only have to make sure that you have
downloaded the corresponding satellite information file (SATELLIT.I05 from http://www.
aiub.unibe.ch/download/BSWUSER50/GEN) and a corresponding antenna phase eccenter
file (e.g., based onPHAS COD.I05 fromhttp://www.aiub.unibe.ch/download/BSWUSER50/
GEN and possibly updated using the ANTEX utility PHCCNV – ”Menu>Conversion>ANTEX to
Bernese format”, description in Section 16.3). Now you only need to change the value for the
BPE variables V PCV from I01 to I05. Please do not forget that this change needs a adequate
adaption of the reference frame.
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