Subject: [SIR-Mail] No.416: [IGSMAIL-6634] igs08_1699.atx: Update including R801 (R26) From: Laura Sanchez ******************************************************************************** SIR Electronic Mail 2012-08-02 18:00:45 UTC Message No. 416 ******************************************************************************** Author: Ralf Schmid and Robert Khachikyan on behalf of the IGS Antenna Working Group Dear IGS colleagues! The absolute IGS antenna correction file (igs08_wwww.atx) has been updated. The new release is called ´igs08_1699.atx´. It contains the following changes: 1) According to Stefan Schaer (CODE), GLONASS-K1 satellite R801 was reactivated utilizing almanac slot 26 in March 2012. Therefore, the following satellite has been added to igs08.atx: R26 (R801) This change in the GLONASS constellation was announced in [IGSMAIL-6581]: > GLONASS-801, the first GLONASS-K1 satellite, launched on February 26, > 2011, has been reactivated on frequency channel -5. The designation of > this (25th active) GLONASS satellite is R26. http://igscb.jpl.nasa.gov/pipermail/igsmail/2012/006573.html 2) Upon request from Rusnavgeoset/Trimble, robot calibration values were copied from ”TRM57971.00 NONE” to the following antenna type: RNG80971.00 NONE The agreement of the phase center behavior between the two antenna types could be confirmed by the colleagues from Geo++ who calibrated one single Rusnavgeoset antenna. The updated antenna correction model is available at ftp://igs.org/pub/station/general/igs08_1699.atx or ftp://igs.org/pub/station/general/igs08.atx Following discussions at the recent IGS Workshop in Olsztyn, the following changes of igs08.atx have to be expected in the near or far future: - conventional phase center offset values for new GNSS - extension of the GPS satellite antenna phase center variations for nadir angles > 14° - azimuthal satellite antenna phase center variations With best regards, Ralf Schmid and Robert Khachikyan on behalf of the IGS Antenna Working Group _______________________________________________ IGSMail mailing list IGSMail@igscb.jpl.nasa.gov http://igscb.jpl.nasa.gov/mailman/listinfo/igsmail ********************************************************************************