Received: from asterix.oma.be (root@asterix-ether.oma.be [193.190.249.240]) by igscb.jpl.nasa.gov (8.9.3/8.9.3) with ESMTP id DAA10705 for ; Thu, 4 May 2000 03:00:43 -0700 Received: from gps001.oma.be ( carine@gps001.oma.be [193.190.230.121]) by asterix.oma.be (8.9.3 (PHNE_18979)/8.9.3) with ESMTP id KAA21149 for ; Thu, 4 May 2000 10:00:37 GMT Message-ID: X-Mailer: XFMail 1.3 [p0] on Linux X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 Date: Thu, 04 May 2000 10:00:37 -0000 (GMT) Organization: Royal Observatory of Belgium From: Carine Bruyninx To: igsmail@igscb.jpl.nasa.gov Subject: [IGSMAIL-2819]: BRUS: antenna change and tracking again Sender: owner-igsmail Precedence: bulk ****************************************************************************** IGS Electronic Mail 04 May 03:00:49 PDT 2000 Message Number 2819 ****************************************************************************** Author: C. Bruyninx Dear Colleagues, The tracking problems at BRUS have been solved by replacing the AOAD/M_T with an ASH701945B_M antenna. This change has been done one week ago on April 27, 2000 (DOY 118). There has been no change in antenna height. From on-site GPS measurements we have computed the position of BRUS before April 27 (with the AOAD/M_T) and after April 27 (with ASH701945B_M) and obtained no significant (below 1 mm) position shift due to the antenna change. Phase eccentricity values used in this computation for the ASH701945B_M (Dorne Margolin type) in this computation are identical to the ones used with the standard Dorne Margolin antenna AOAD/M_T (0.1100 m for the L1 phase center and 0.1280 m for L2). No elevation dependent phase eccentricity values have been used. Daily data for BRUS will be made available again from DOY 119 on. Hourly data submission will resume today May 4, 2000 (DOY 125). Best regards, Carine Bruyninx Royal Observatory of Belgium