Star trackers, star catalogs, and attitude determination - Probabilistic aspects of system design

Details Star trackers, star catalogs, and attitude determination - Probabilistic aspects of system design Star trackers, star catalogs, and attitude determination - Probabilistic aspects of system design

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992asdy.conf..801v&link_type=abstract

IN: Astrodynamics 1991; Proceedings of the AAS/AIAA Astrodynamics Conference, Durango, CO, Aug. 19-22, 1991. Pt. 1 (A92-43251 18

Computer Science

Performance

Astronomical Catalogs, Attitude Control, Control Systems Design, Poseidon Satellite, Star Trackers, Computerized Simulation, Field Of View, Onboard Data Processing, Optimal Control, Reference Stars

Scientific paper

Optimizing spacecraft attitude determination systems that use onboard star trackers requires analysis and evaluation of some probabilistic aspects of system design. This paper discusses methods of constructing or compiling optimum star catalogs, which are defined as uniform distributions on a sphere. Both local and global measures of uniformity on a sphere are defined. Application of these methods and measures to a specific problem is also discussed. In addition, Poisson models of star tracker acquisition probabilities are formulated to provide a useful analytical basis for designing and optimizing attitude determination systems. These analytical models and methods lead to rapid and realistic quantitative results, and should therefore facilitate making system performance trades. Use of such methods should also reduce the need for performing tedious computer simulations to obtain analogous results.

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