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Proceedings Paper

Attitude sensor calibration for the ocean topography experiment satellite
Author(s): Scott Davis; John Lai
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Paper Abstract

A ground-based software system to calibrate the attitude control sensors for the Ocean Topography Experiment (TOPEX) spacecraft is described. The algorithm determines sensor misalignment, bias and scale factor errors from gyro, sun sensor and star tracker measurements. The inherent yaw slew motion of the spacecraft during normal mission mode is exploited to make the error parameters observable. A two loop recursive least-squares algorithm is implemented with the feature of inhibiting the update of the error parameter state until all of the available data has been processed. This feature eliminates the estimation state feedback typical of other algorithms which can cause instability and convergence problems.

Paper Details

Date Published: 23 September 1993
PDF: 12 pages
Proc. SPIE 1949, Space Guidance, Control, and Tracking, (23 September 1993); doi: 10.1117/12.157073
Show Author Affiliations
Scott Davis, Jet Propulsion Lab. (United States)
John Lai, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 1949:
Space Guidance, Control, and Tracking
George E. Sevaston; Richard H. Stanton, Editor(s)

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