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Proceedings Paper

Construction of hierarchically indexed guide star database
Author(s): Wan-bo Zheng; Zhi Liu; Zhihang Hao
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Paper Abstract

Star tracker is widely used for attitude determination in the field of space flight. The key part of the autonomous star sensor is the on-board database and its structure to facilitate efficient search, a hierarchical indexed guide star database is given in this paper. Bright stars that have low magnitude can be detected more easily, so we divide star to local area bright star and local area dim star, LBS is as a main role and select different combination of bright and dim star when construct star triangle. By this way, the number of triangle will be reduced. According to difference angular distance, indexes are given to hierarchical guard star database for improving the hit target rate. For its small database size and real-time is superior than the traditional database, hierarchical indexed guide star database as a reduced database is useful for new star tracker that has wide field of view, low detectability of star magnitude.

Paper Details

Date Published: 20 September 2002
PDF: 5 pages
Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); doi: 10.1117/12.465755
Show Author Affiliations
Wan-bo Zheng, Jilin Univ. (China)
Zhi Liu, Jilin Univ. (China)
Zhihang Hao, Jilin Univ. (China)


Published in SPIE Proceedings Vol. 4919:
Advanced Materials and Devices for Sensing and Imaging
Jianquan Yao; Yukihiro Ishii, Editor(s)

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