From falko.menge at mbox.ife.uni-hannover.de Fri Jun 9 04:26:53 2000 From: falko.menge at mbox.ife.uni-hannover.de (Falko Menge) Date: Fri, 9 Jun 2000 13:26:53 +0200 (MET DST) Subject: [IGSMAIL-2880]: Absolute PCV of AOA/DM_T available Message-ID: ****************************************************************************** IGS Electronic Mail 09 Jun 09:32:22 PDT 2000 Message Number 2880 ****************************************************************************** Author: FALKO MENGE >> Absolute PCV of AOAD/M_T available << Dear colleagues, We would like to draw your attention to a right now completed internet publication on our web-sites concerning absolute phase center variations (PCV). The development of the Absolute Field Calibration of Antenna PCV reached a point, where the calibration has become a matured and highly precise procedure. Since the need and demand for absolute PCV information is quite high and the "topic PCV" is very important for precise GPS (GNSS) coordinate determination, we decided to publish the absolute PCV for the AOAD/M_T choke ring antenna (most common type within the IGS network, reference antenna for relative PCV calibration) on the web. The results of extensive calibrations of one antenna of this type is now freely accessible and can be downloaded. Beside the PCV table(s), you will find more information on absolute field calibration. Furthermore, some suggestions for an enhancement and extension for a more proper format definition for the antenna PCV tables can be found and should initiate a fruitful discussion. We hope the publication of the absolute PCV for the AOAD/M_T choke ring antenna can "fill a gap" within the GPS error budget. The web-sites can be found here: http://www.ife.uni-hannover.de/~web/AOA_DM_T and/or http://www.geopp.de/english/aktuelles Any comments are appreciated. Best regards, Falko Menge (IfE) and Martin Schmitz (Geo++) (for the PCV and MP working group in Hannover at IfE and Geo++) IfE Institut fuer Erdmessung University of Hannover Schneiderberg 50 30167 Hannover www.ife.uni-hannover.de Geo++ Gesellschaft fuer satellitengestuetzte geodaetische und navigatorische Technologien mbH Steinriede 8 30827 Garbsen www.geopp.de Apologies to those who receive multiple copies of this mail via different email lists. ********************************************************************** @@@@ @@ @@@@@ FALKO MENGE * @@ @@ @@ Universitaet Hannover * @@ @@@@ @@@ Institut fuer Erdmessung * @@ @@ @@ Schneiderberg 50 * @@@@ @@ @@@@@ 30167 Hannover * * * * www http://www.ife.uni-hannover.de * * e-mail menge at ife.uni-hannover.de * * tel +49-511-762-4905 * * fax +49-511-762-4006 * **********************************************************************