24 October 2017 Miniaturized star tracker for micro spacecraft with high angular rate
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Proceedings Volume 10463, AOPC 2017: Space Optics and Earth Imaging and Space Navigation; 1046311 (2017) https://doi.org/10.1117/12.2283271
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
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.
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Jianhua Li, Zhifeng Li, Zhenhong Niu, Jiaqi Liu, "Miniaturized star tracker for micro spacecraft with high angular rate", Proc. SPIE 10463, AOPC 2017: Space Optics and Earth Imaging and Space Navigation, 1046311 (24 October 2017); doi: 10.1117/12.2283271; https://doi.org/10.1117/12.2283271
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