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Proceedings Paper

Miniaturized star tracker for micro spacecraft with high angular rate
Author(s): Jianhua Li; Zhifeng Li; Zhenhong Niu; Jiaqi Liu
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Paper Abstract

There is a clear need for miniaturized, lightweight, accurate and inexpensive star tracker for spacecraft with large anglar rate. To face these new constraints, the Beijing Institute of Space Long March Vehicle has designed, built and flown a low cost miniaturized star tracker that provides autonomous (“Lost in Space”) inertial attitude determination, 2 Hz 3-axis star tracking, and digital imaging with embedded compression. Detector with high sensitivity is adopted to meet the dynamic and miniature requirement. A Sun and Moon avoiding method based on the calculation of Sun and Moon’s vector by astronomical theory is proposed. The produced prototype weight 0.84kg, and can be used for a spacecraft with 6°/s anglar rate. The average angle measure error is less than 43 arc second. The ground verification and application of the star tracker during the pick-up flight test showed that the capability of the product meet the requirement.

Paper Details

Date Published: 24 October 2017
PDF: 5 pages
Proc. SPIE 10463, AOPC 2017: Space Optics and Earth Imaging and Space Navigation, 1046311 (24 October 2017); doi: 10.1117/12.2283271
Show Author Affiliations
Jianhua Li, Beijing Institute of Space Long March Vehicle (China)
Zhifeng Li, Beijing Institute of Space Long March Vehicle (China)
Zhenhong Niu, Beijing Institute of Space Long March Vehicle (China)
Jiaqi Liu, Beijing Institute of Space Long March Vehicle (China)


Published in SPIE Proceedings Vol. 10463:
AOPC 2017: Space Optics and Earth Imaging and Space Navigation
Carl Nardell; Suijian Xue; Huaidong Yang, Editor(s)

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