Message-ID: <3B092249.E06F645F@noaa.gov> Date: Mon, 21 May 2001 10:12:25 -0400 From: "Gerald L Mader" To: IGSMAIL Subject: [IGSMAIL-3340]: resend: BLK II A antenna calibration Sender: owner-igsmail Precedence: bulk ****************************************************************************** IGS Electronic Mail 21 May 09:36:16 PDT 2001 Message Number 3340 ****************************************************************************** Author: Gerry Mader NGS/NOS/NOAA My thanks to Bruce Schupler for pointing out that I interchanged the final L1 and L2 z-offsets that I quoted for the BLK II A antenna in the previous email. I have corrected these numbers below and on the final slide found at the web site. Author: Gerry Mader NGS/NOS/NOAA Subject: Calibration of the BLK II A satellite antenna A presentation and the results of our calibration of a BLK II A GPS Satellite at the Boeing Co. during December, 2000, are now available at the NGS antenna calibration web site. Please note that the new address of this site is www.ngs.noaa.gov/ANTCAL . We have determined the z-offsets from the center of mass to be: L1 = 118 cm L2 = 87 cm LC = 166 cm We have also included a file containing the absolute antenna calibrations for all the antennas we have currently calibrated. This file was created by combining our current relative calibrations with the absolute values for the AOAD/M_T antenna reported by Falko Menge et al. and found at: http://www.ife.uni-hannover.de/~web/AOA_DM_T/ We are currently scheduled to repeat these measurements at Boeing during the week of June 11 and will also include a BLK II F antenna. We are also starting discussions to calibrate a BLK II R antenna at Lockheed-Martin. We have done some preliminary global solutions using these new antenna values and hope that the other Analysis Centers and others will do so also. Please contact me for any comments or questions.