Computer Science – Performance
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.255..421f&link_type=abstract
In its Proceedings of the Second International Symposium on Spacecraft Flight Dynamics p 421-427 (SEE N87-25354 19-18)
Computer Science
Performance
2
Giotto Mission, Orbital Position Estimation, Satellite Attitude Control, Satellite-Borne Instruments, Star Trackers, Trajectory Analysis, Data Processing, Pattern Recognition, Satellite Ground Support, Star Distribution
Scientific paper
The Giotto star mapper flight hardware and ground processing software, and the inflight performance of the overall star mapper attitude determination system are discussed. The star mapper datates transit times of stars or planets through a Vee shaped detector slit pattern. The datated events are transmitted to ground for processing. A ground based starmapper attitude determination system performs telemetry preprocessing, star pattern identification, and attitude reconstitution. The Halley mission shows the sensor to have low measurement noise, but susceptibility to spurious events. Real time star pattern recognition and attitude determination with accuracy within 0.1 deg was maintained throughout the mission.
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