| Date: | 1998-07-14 15:00:00 | |
| Sender: | Chris Reigber GFZ Potsdam <ppr@dfd.dlr.de (ppr)> | |
| Subject: | [SLR-Mail] No. 132: Restart of ERS-1 SLR Tracking | |
| Author: | Chris Reigber GFZ Potsdam | |
| Content: | ******************************************************************************** SLR Electronic Mail 1998-07-14 15:00:00 UTC Message No. 132 ******************************************************************************** Author: Chris Reigber GFZ Potsdam Subject: Restart of ERS-1 SLR Tracking F.-H. Massmann GFZ Potsdam Restart of ERS-1 SLR Tracking ============================= Dear colleagues, Recently ESA has decided to reactivate some instruments of the hibernated ERS-1 satellite in order to have the last Tandem Phase with ERS-2 before ERS-1 will be totally off. As this Tandem Phase is dedicated to SAR operations there is a strong dependance on the readiness of the DLR/GFZ SAR antenna in Central Asia, which will be operational in Bishkek in about two weeks. The length of the tandem operations will be some months depending on the health of the now about 7 years old ERS-1 satellite. In order to make full use of the acquired data ERS-1 orbit information of high quality is required. This can only be achieved with SLR tracking. As the radar altimeter will not be switched-on, SLR is the only precise tracking information. Therefore we asked you, also in agreement with the CSTG SLR/LLR Steering Committee, to participate in the ERS-1 SLR tracking as much as possible (same priority as ERS-2) ----------------------------- starting from July 20th, 1998. ----------------------------- As in the past GFZ/OP will provide the orbit predictions for ERS-1 through the usual channels. We know that there are quit a number of tracking activities, but we should not miss this last opportunity for tandem operations of two almost identical spacecrafts. Best regards Chris Reigber Franz-Heinrich Massmann ------------------------------------------------------------- Franz-Heinrich Massmann GFZ/OP Manager GeoForschungsZentrum Potsdam, Division 1 Section 1.2 Satellite Mission Development and Operations c/o DLR Oberpfaffenhofen D-82230 Wessling Germany Tel.: (+49) 8153-28-1206 email: fhm@dfd.dlr.de Fax: (+49) 8153-28-1585 WWW: http://www.gfz-potsdam.de/welcome_en.html ------------------------------------------------------------- From: ppr@dfd.dlr.de (ppr) ******************************************************************************** |