[IGSMAIL-5149]: New file with absolute antenna models for receivers and satellites

[Gerd Gendt]

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IGS Electronic Mail      12 May 11:47:29 PDT 2005      Message Number 5149
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Author: IGSACC

Sub: New file with absolute antenna models for receivers and satellites



Dear colleagues,

A new file with absolute antenna models named igs_test05.atx is
now available at

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

and can be used for tests.

The file contains all available absolutely calibrated receiver antennas,
including the following antenna+radome calibrations for 22 antennas 
(10 calibrations from Geo++ and 12 calibrations from NGS converted 
to the absolute values):  

   Antenna       Radome Sites
   -------------------- -----
   ASH700936A_M    SNOW HOLP ROCK TABL
   ASH700936B_M    SNOW BAHR BJFS CRFP VNDP 
   ASH700936C_M    SNOW RIOG SCUB WTZA
   ASH700936D_M    SCIS AMMN LBCH SCIP
   ASH700936D_M    SNOW ANTC BUCU COPO COSO COYQ DRAG DUBR FALE HELJ HILO
                        HNLC IQQE ISTA KOUC LHUE MAUI PARC ROCH SUVA TRAB
                        VALP WIDC
   ASH700936E      SNOW HNPT OSJE PTBB WUHN
   ASH701933B_M    SNOW FREE MANZ
   ASH701945B_M    SCIS AZU1 DHLG MBAR MONP PIN1 SIO3 SNI1
   ASH701945B_M    SCIT GLPS NRIL SFDM
   ASH701945B_M    SNOW HYDE RAMO TEHN
   ASH701945C_M    SCIS INVK KGNI MOBN PIN1 TWTF
   ASH701945C_M    SCIT BREW HALY NAMA
   ASH701945C_M    SNOW BOGI KIRU
   ASH701946.3     SNOW GOPE
   LEIAT303        LEIC
   LEIAT504        LEIS BZRG MALD SVTL TGCV
   LEIAT504        SCIS HOLB UCLU
   NOV503+CR       SPKE GMSD              
   TPSCR3_GGD      CONE SASS STR2 WARN WTZZ
   TRM29659.00     TCWD GOUG VESL
   TRM29659.00     UNAV BARH BRMU EPRT ESTI GUAT MANA SSIA TUBI
   TRM33429.20+GP  UNAV ASPA CNMR 

The satellite antenna z-offsets (satellite-specific) and patterns
(block-specific), which are compatible to the given receiver patterns, were
determined by the Technical University of Munich (TUM) and GeoForschungsZentrum
Potsdam (GFZ) re-analysing 11 years of data. The file  contains the mean values 
of
both solutions. During the estimation of the z-offsets the network solution 
was fixed to the IGb00 system. Therefore the use of the new antenna file should
not result in systematic scale changes.  The detailed influence of the new
model on all the IGS products will be investigated during the next months before
the official IGS products will be based on the new antenna models. 

Up to now GLONASS satellites are not included, but will be added as soon as
first estimates are available.

We would like to thank Geo++ for providing the antenna+radome calibrations
(http://gnpcvdb.geopp.de) to the IGS.

Best regards
Ralf Schmid    Gerd Gendt


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*                         Gerd Gendt                                         *
*  _/_/_/  _/_/_/_/_/_/   GeoForschungsZentrum                               *
* _/       _/       _/    Department Geodesy and Remote Sensing              *
* _/ _/_/  _/_/    _/     Telegrafenberg A17                                 *
* _/    _/ _/     _/      D-14473 Potsdam ,  GERMANY                         *
*  _/_/_/  _/    _/_/_/   Phone : ++49 331 288 1114   Fax :++49 331 288 1759 *
*                         E-Mail: gendt at gfz-potsdam.de                       *
* IGS GFZ AC         :    AFTP://ftp.gfz-potsdam.de/pub/igsprod              *
*                         http://www.gfz-potsdam.de/igs                      *
* IGS Analysis Coord.:    AFTP://ftp.gfz-potsdam.de/pub/igsacc               *
*                         http://www.gfz-potsdam.de/igsacc                   *
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