****************************************************************************** DORIS Electronic Mail Thu Jun 12 14:23:27 WETDST 1997 Message Number 0015 ****************************************************************************** Author: Murielle Costes (CNES - DORIS system manager) Subject: information on the DORIS system DORIS /SPOT4 : DORIS System Tests have been conducted succesfully with the satellite simulator in may EMC radiating tests took place in INTESPACE by end of may, they are completed. The DORIS measutements show that POAM creates a disturbance in DORIS' spectrum. The system manager (me) is studying the impact of such a disturbance. In first opinion, it would be better to reduce POAM emitting power of about 5 to 7 dBm. The satellite is back to MMS Toulouse. The integration is going on. System qualification tests with FM satellite are planned by end of june. DORIS NG : As the commercial proposals made by the bidders exceeded the budget estimated for DORIS NG development, DORIS NG is stopped. GROUND SEGMENT : CLS, and so the CTDP, is moving during june from CNES to its new accomodation near the Canal du Midi 's border, 500 m away from its today's settlement. The Toulouse Master Beacon will move into CLS new building. An optical fiber link will connect the TMB to Time Reference at CNES (Time and Frequency Laboratory). New TMB coordinates wille be known by end of june. DORIS/SPOT2 incident : Saturday 31th of may, the CTDP detected an incident on the DORIS instrument on-board SPOT2. A minor incendent procedure was run unsuccessfully. By the time, an major incident procedure is under going. More information will be given in the coming days... DORIS/TOPEX incident : Bad luck for the DORIS system ! Wenesday 4th of june, while investigating on the DORIS/SPOT2 incident, the TGS informed the CTDP that an incident had been detected on the DORIS/TOPEX on-board instrument and tha the minor incident procedure had been runned unsuccessfully ! The major incident procedure is under going. More information will be given in the coming days... [Mailed From: Loic Daniel ]