Accession Number : ADP003388

Title :   A Filtered Attitude Determination System for Spacecraft Measurement and Control,

Corporate Author : BRITISH AEROSPACE DYNAMICS GROUP BRISTOL (ENGLAND) SPACE AND COMMUNICATIONS DIV

Personal Author(s) : Noton,M.

Report Date : JAN 1984

Pagination or Media Count : 21

Abstract : This paper refers to a collaborative project to develop an accurate attitude determination system based on the combined use of gyros and star-crossing detectors. The latter are attractive for earth-pointing satellites but the intermittent nature of the data introduces complications, compared to star tracker systems. Background is given on the hardware, but the emphasis in on formulation of the estimating algorithm (suitable for limited wordlength microprocessors), characterization of gyro drift, and estimation of overall performance both for low- earth and geostationary orbits. (Author)

Descriptors :   *Attitude control systems, *Satellite attitude, *Space navigation, *Space systems, Earth orbits, Gyro stabilizers, Algorithms, Star trackers, Microprocessors, Algorithms

Distribution Statement : APPROVED FOR PUBLIC RELEASE