[IGSMAIL-4324]: Test Set of Absolute Antenna PCVs
Markus Rothacher
Markus.Rothacher at bv.tu-muenchen.de
Fri Mar 28 01:16:06 PST 2003
******************************************************************************
IGS Electronic Mail 28 Mar 01:09:58 PST 2003 Message Number 4324
******************************************************************************
Author: Markus Rothacher
Dear Colleagues,
it took much longer than initially thought to put together
a new consistent set of GPS antenna phase center
offsets and phase center variations (PCVs), but here it is.
The following remarks concerning this new set should be
considered:
- The set of PCVs contains now absolute antenna patterns and
no longer patterns relative to the AOAD/M_T antenna.
- Values for satellite and receiver antennas are given in
the new ANTEX format.
- Not only elevation- but also azimuth-dependent PCVs are
available for some (not all) of the receiver antenna types.
PCVs with elevation-dependence only are also given (see
keyword NOAZI in ANTEX).
- GPS satellite antenna PCVs are included and have to be used
together with the absolute receiver antenna PCVs to avoid
a wrong scaling of the GPS results by about 15 ppb.
- Offsets and PCVs have to be used consistently, for the
receiver as well as for the satellite antennas.
- The set of PCV corrections given here is a test set that
should only be used to perform tests at present. After
thorough testing it will be decided, whether the new set
will become the new official IGS set.
- We would like to thank the company Geo++ and the Institut
für Erdmessung for making their absolute robot calibration
measurements available to us.
- The satellite antenna PCVs were computed from global GPS
data, which means that only the ionosphere-free PCVs
are presently available. The L1 and L2 PCVs were set to
the ionosphere-free PCVs.
The ANTEX format description (antex10.txt) and the
test set of PCVs (pcv_abs_proposed.tst) may be downloaded from the
IGS CB information system at
ftp://igscb.jpl.nasa.gov/pub/station/general/pcv_proposed
Much success with your tests !
If there are any questions, comments, results etc., please
let us know.
With best regards,
Markus Rothacher (rothacher at bv.tum.de)
Ralf Schmid (schmid at bv.tum.de)
--------------------------------------------------------------------------------
Prof. Dr. Markus Rothacher Phone : ++49-89-289-23191
Forschungseinrichtung Satellitengeodaesie Fax : ++49-89-289-23178
Technische Universitaet Muenchen E-mail:
markus.rothacher at bv.tum.de
Arcisstrasse 21
D-80290 Muenchen / Germany
More information about the IGSMail
mailing list