Analysis of antenna depointing as a result of satellite attitude control and station keeping errors
Abstract
The paper establishes practical formulas in order to determine the depointing angle for a geostationary satellite antenna. Both satellite attitude and station keeping errors are considered. The attitude control and station keeping specifications give respectively the amplitude of the angular motion of the satellite about its center of mass and the amplitude of the displacement of the satellite with respect to its nominal position. The effects of these angular motions and displacements on the aiming of the satellite antenna are analyzed. A set of formulas is derived which permits the calculation of the overall satellite antenna depointing angle. These formulas can be used for the estimation of the satellite antenna gain loss or interference contribution at a given location on the earth.
- Publication:
-
13th AIAA International Communication Satellite Systems Conference and Exhibit
- Pub Date:
- 1990
- Bibcode:
- 1990icss.conf..337B
- Keywords:
-
- Satellite Antennas;
- Satellite Attitude Control;
- Satellite Communication;
- Spacecraft Stability;
- Communication Satellites;
- Satellite Orbits;
- Stationkeeping;
- Synchronous Satellites;
- Space Communications, Spacecraft Communications, Command and Tracking