[IGSMAIL-4469]: New ANTEX version (1.1) and new test set of absolute antenna PCVs

[Ralf Schmid]

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IGS Electronic Mail      24 Jun 04:07:58 PDT 2003      Message Number 4469
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Author: Ralf Schmid

Dear Colleagues,

different comments and suggestions from some of you concerning the new
ANTEX format as well as the test set of GPS antenna phase center offsets
and absolute phase center variations resulted in some small modifications.

ANTEX format description (antex11.txt):
- An optional antenna-specific SINEX CODE was added for referencing the
   antenna model in SINEX files.
- A remark concerning the position of COMMENT lines was added.

Test set (pcv_abs_proposed11.tst):
- The antenna offset in X-direction for the Block II and the Block IIA
   satellites was changed from 279.40 mm to 279.00 mm.
- For the antenna TRM33429.20+GP absolute calibration results were
   added.
- Those antennas whose phase center variations were converted from
   'igs_01.pcv' and which do not possess calibration results for
   elevation angles below 10 degrees in the file 'igs_01.pcv' also do not
   possess absolute phase center variation values in the new file.
- For each antenna the SINEX CODE (see above) 'IGS_2003' was inserted.

The new ANTEX format description (version 1.1) and the new test set of
antenna offsets and absolute phase center variations can be downloaded
from the IGS CB information system at

ftp://igscb.jpl.nasa.gov/igscb/station/general/pcv_proposed/

If there are any questions or further comments, please let us know.

With best regards,
                        Ralf Schmid (schmid at bv.tum.de)
                        Markus Rothacher (rothacher at bv.tum.de)