Agile spacecraft attitude reference system design

Details Agile spacecraft attitude reference system design Agile spacecraft attitude reference system design

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979guco.confq....d&link_type=abstract

American Astronautical Society, Annual Rocky Mountain Guidance and Control Conference, Keystone, Colo., Feb. 24-28, 1979, 29 p.

Computer Science

Performance

Attitude Control, Attitude Gyros, Celestial Navigation, Spacecraft Control, Spacecraft Guidance, Attitude Indicators, Attitude Stability, Spacecraft Electronic Equipment, Stellar Magnitude

Scientific paper

This paper presents a preliminary design approach for strapdown attitude reference systems (ARS). A technique is described by which a designer can quickly specify sensor hardware parameters to satisfy an overall spacecraft attitude knowledge requirement. The ARS includes star epoch detectors (star crossing indicators) and rate integrating gyros. Equivalent scale factor error is assumed to be the dominant gyro error source. A plot of the star sensor magnitude sensitivity required to yield a star crossing as the star sensor traverses an arbitrary area of the celestial sphere is a key element of the design technique. ARS performance predicted by the method is demonstrated by comparison with computer simulation.

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