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Optical Engineering

Laboratory calibration of star tracker with brightness independent star identification strategy
Author(s): Fei Xing; Ying Dong; You Zheng
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Paper Abstract

Star trackers based on charge-coupled device (CCD) or complementary metal-oxide semiconductor (CMOS) sensors, use a brightness independent star identification strategy that requires highly accurate measurements of star spot position. Therefore, precise calibration of the measurement model is crucial. Generally, ground-based real night sky observation is a specific and costly approach. In this work, an optical laboratory method for star tracker calibration is proposed. This method is based on ordinary instruments, laser autocollimation adjustment, and image processing techniques. The calibration issues of the star tracker with a brightness independent star identification strategy are analyzed. A new laboratory calibration method is introduced, and its results on an active pixel sensor (APS) star tracker are discussed. This method proves to be practical and adequate in the development of a star tracker with wide field of view.

Paper Details

Date Published: 1 June 2006
PDF: 9 pages
Opt. Eng. 45(6) 063604 doi: 10.1117/1.2213996
Published in: Optical Engineering Volume 45, Issue 6
Show Author Affiliations
Fei Xing, Tsinghua Univ. (China)
Ying Dong, Tsinghua Univ. (China)
You Zheng, Tsinghua Univ. (China)

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