DEVELOPMENT OF A STAR SENSOR FOR SATELLITE ATTITUDE CONTROL.
ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)
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The paper describes the early stages in the development of a star sensor which is designed to drive gas jets or reaction wheels to counter-balance disturbing torques and so stabilize the attitude of a satellite in space axes. Theoretical and practical results leading to the choice of a frequency modulated system are given. In laboratory tests an experimental sensor of this type, with an optical field of 34 degree, produced an output voltage that is roughly proportional to misalignment angle with less than one arcsecond equivalent r.m.s. noise in a bandwidth of 0.5 cps when sensing a 2 magnitude star. Almost as good a result was achieved in field trials at the Royal Observatory at Herstmonceux. Author
- Optical Detection and Detectors
- Space Navigation and Guidance
- Unmanned Spacecraft