Message-ID: <4A83CAEF.6020100@jpl.nasa.gov> Date: Thu, 13 Aug 2009 01:12:31 -0700 From: Robert Khachikyan User-Agent: Thunderbird 2.0.0.22 (Windows/20090605) To: igs-equipment-files@igscb.jpl.nasa.gov, igsmail@igscb.jpl.nasa.gov Subject: [IGSMAIL-5983]: New: igs05_1544.atx Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-igsmail Precedence: bulk ****************************************************************************** IGS Electronic Mail 13 Aug 01:14:27 PDT 2009 Message Number 5983 ****************************************************************************** Author: Ralf Schmid and Robert Khachikyan Dear IGS colleagues! The absolute IGS antenna correction file (igs05_wwww.atx) has been updated. The new release is called 'igs05_1544.atx'. It contains the following changes: 1) In preparation for the launch of SVN50, a 'decommission date' for the following satellite has been added: G05 (G035): 8 June 2009 "Although SVN35/PRN05 was decommissioned from active service on 26 March 2009, its L-band transmitters remained active for over two months. According to International GNSS Service monitoring reports, the L-band transmitters were shut off on June 8." https://listserv.unb.ca/cgi-bin/wa?A2=ind0906&L=CANSPACE&P=10398 http://www.navcen.uscg.gov/archives/GPS/2009/NANUS/2009023.nnu 2) Three additional robot calibrations provided by Geo++ GmbH: TPSCR.G3 NONE This antenna type obviously is already in use at IGS site VALD. http://igscb.jpl.nasa.gov/mail/igsstation/2009/msg00453.html TRM59800.80 NONE TRM59800.80 SCIS The latter calibration values were copied from the corresponding TRM59800.00 antenna/radome combinations. As TRM59800.00 and TRM59800.80 (TRM29659.00 upgraded to TRM59800.00) are identical in construction, the two antenna types are assumed to show similar phase center corrections. However, a confirmation by one of the calibration institutions is missing so far. The update of the antenna correction model is available at ftp://igscb.jpl.nasa.gov/pub/station/general/igs05_1544.atx or ftp://igscb.jpl.nasa.gov/pub/station/general/igs05.atx With best regards, Ralf Schmid and Robert Khachikyan on behalf of the IGS Antenna Working Group