Precise orbit determination of SPOT platform with DORIS
Abstract
DORIS (Doppler Orbitography and Radiopositioning Integrated by Satellite) is a new precise orbit determination system developed by CNES to meet the high accuracy requirement of oceanographic altimetric missions of TOPEX/Poseidon. The system is based upon a worldwide network of about 50 ground transmitting beacons, a Doppler receiver onboard of the satellite, a ground segment to control the system and a new software called ZOOM to compute the orbit. To prepare the DORIS operational applications and to access the in flight performances, a first DORIS receiver was put on SPOT2 platform, the network of orbitography beacons was deployed, and the ZOOM software was tested with actual data. Since the SPOT2 launch of January 22, 1990, improvements have been made in orbit computation. The paper emphasizes the major points which contribute to high precision objectives, during the first year of DORIS/SPOT2 life.
- Publication:
-
Astrodynamics 1991
- Pub Date:
- August 1992
- Bibcode:
- 1992asdy.conf..207N
- Keywords:
-
- Doppler Radar;
- Orbital Position Estimation;
- Positioning;
- Spot (French Satellite);
- Ground Stations;
- Poseidon Satellite;
- Precision;
- Satellite Orbits;
- Satellite Tracking;
- Topex;
- Space Communications, Spacecraft Communications, Command and Tracking