Bernese GPS Software Version 5.0 - Bernese GNSS Software

4.2.3.3 Antenna Names
4.2 RINEX Observation Files
GNSS antennas may have radomes. According to IGS standards the radome code is given
in the RINEX observation files in characters 17 to 20 of the antenna name (ANT # / TYPE).
If you disable the option “Consider radome code of the antennas” in panel “RXOBV3 4: Input
Options 2” (Figure 4.3) the characters 17–20 are set to blank before saving the antenna
name to the Bernese observation header. If you enable the option you have to include the
radome codes in the “Station information file” as well as in the file containing antenna phase
offsets and patterns (option “Phase center offsets”, panel “RXOBV3 1.1: General Files”) in a
consistent way. Note, that the radomes have been ignored in the relative antenna phase
center modeling used within the IGS before GPS week 1400 (2006-Nov-05, day of year 309)
whereas they are considered after this date (We refer to Section 16.1 for more details on
the antenna models used within the IGS. The option “Correct position of radome code” can be
activated to correct antenna name strings containing shifted radome codes.
Option “Check phase center file for antenna type” in panel “RXOBV3 4: Input Options 2” offers the
possibility to check whether the antenna phase center file specified in “Phase center offsets”
contains the antenna type given by the RINEX file. You may enable this option in order
to avoid that data tracked by an unknown antenna enters the processing which would stop
with a fatal error in that case. The possible actions to be taken if the antenna type is not
found in the phase center file are:
• WARNING: The program issues a warning but the Bernese observation file will nevertheless
be written.
• SKIP: The Bernese observation file is not written and program execution continues
with the next RINEX file. This selection is recommended for automatic processing.
• ERROR: The program issues an error message and stops execution.
If a station information file is specified in option “Station information file” the program checks
whether the (new) station name is listed in section TYPE 002: STATION INFORMATION. If an
entry with the correct time window is found the antenna and receiver names specified in this
section (with the exception of a string “*** UNDEFINED ***”) overwrites the names found
in the RINEX file. This renaming takes place in any case, independent of any verification
option (see next section).
4.2.3.4 Verification of RINEX Header Information
The specification of a “Station information file” (Section 22.8.3) in the first panel “RXOBV3 1:
Filenames” is optional but strongly recommended. By using a station information file when
importing RINEX files into Bernese format you have control over receiver, antenna, and
other equipment changes which is particularly important for the data analysis of a permanent
network.
The station information file is used to verify RINEX header information and to adapt the
station information records to well defined names before writing the Bernese observation
header file. If you have specified a “Station information file” the panel “RXOBV3 5.1: Check
Content of RINEX Header 1” (Figure 4.4) will be accessible. The options in this panel define
the actions to be taken if an inconsistency between RINEX header and station information
Bernese GPS Software Version 5.0 Page 59