Design of a new attitude measurement and control system for satellite in geosynchronous orbit using stars detection reference
Abstract
A new concept of attitude measurement for satellite control in GEO orbit applicable for various missions is described. Two three-axis star sensors whose field of view are 7 per 9 degrees are placed 120 deg away from each other. The measurements are sensitive to roll, pitch, yaw, and position in orbit. Using a precise on-board orbital model, the three attitude angles can be split to provide a yaw detection. Pointing budgets are improved with respect to earth-sensor-based measurement assemblies in normal mode and remain unchanged for station-keeping despite gyroless detection. No gyro information is needed in operational modes-normal mode station keeping. The major drawback is the software complexity.
- Publication:
-
Brighton International Astronautical Federation Congress
- Pub Date:
- October 1987
- Bibcode:
- 1987brig.iafcT....S
- Keywords:
-
- Ccd Star Tracker;
- Control Systems Design;
- Geosynchronous Orbits;
- Satellite Attitude Control;
- Synchronous Satellites;
- Circuit Reliability;
- Pointing Control Systems;
- Software Engineering;
- Spacecraft Performance;
- Stationkeeping;
- Three Axis Stabilization;
- Spacecraft Instrumentation