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Proceedings Paper

Research on precision windowed track mode for in-orbit calibration on star tracker
Author(s): Jun Zhang; Yun-cai Hao; Li Wang
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Paper Abstract

Implementation of an in-orbit calibration is an effective approach to reduce position error of individual star spot down to arcsec on star tracker. However, without knowledge of variance errors of some error sources, the reduction of such errors to what extent is unclear leading to in-orbit correction inefficiency. Based on Cramer Rao Lower Bound(CRLB) theory, we obtain the minimum variance error of position and make an accurate definition of precision windowed track mode for in-orbit calibration. After that, the error constraints on proper motion, velocity aberration, drift in focal length and other factors are studied in details. Imposing proper restrictions on those parameters, in-orbit correction of star tracker could approach CRLB accuracy.

Paper Details

Date Published: 15 October 2015
PDF: 5 pages
Proc. SPIE 9676, AOPC 2015: Optical Design and Manufacturing Technologies, 96760M (15 October 2015); doi: 10.1117/12.2199245
Show Author Affiliations
Jun Zhang, Beijing Institute of Control and Engineering (China)
Yun-cai Hao, Beijing Institute of Control and Engineering (China)
Li Wang, Beijing Institute of Control and Engineering (China)


Published in SPIE Proceedings Vol. 9676:
AOPC 2015: Optical Design and Manufacturing Technologies
Lin Li; Kevin P. Thompson; Ligong Zheng, Editor(s)

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