The development of a prototype solid-state star sensor

Details The development of a prototype solid-state star sensor The development of a prototype solid-state star sensor

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987casj...33..198w&link_type=abstract

(CASI, Conference on Astronautics, 4th, Ottawa, Canada, Nov. 3-4, 1987) Canadian Aeronautics and Space Journal (ISSN 0008-2821),

Computer Science

Performance

Charge Injection Devices, Solid State Devices, Spaceborne Astronomy, Star Trackers, Design Analysis, Earth Orbital Environments, Microprocessors, Performance Tests

Scientific paper

Canadian researchers have undertaken the development of a two-dimensional charge-injection device mosaic array star sensor, with the performance objective of detecting and independently tracking several light sources of different stellar magnitudes, at rates comparable to those obtainable by satellite-borne sensors in LEO. The detected object's light is optically blurred and distributed over a number of pixels on the imager array; a microprocessor-based centroiding algorithm can then determine the center of the light source within a small fraction of a pixel. The scanning of the array is controlled by the same microprocessor employed in real-time sensor data preprocessing. Star tracker operation modes encompass search, coarse tracking, and fine tracking.

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