Construction of hierarchically indexed guide star database

Wan-bo Zheng; Zhi Liu; Zhihang Hao

doi:10.1117/12.465755

20 September 2002 Construction of hierarchically indexed guide star database

Wan-bo Zheng, Zhi Liu, Zhihang Hao

Proceedings Volume 4919, Advanced Materials and Devices for Sensing and Imaging; (2002) https://doi.org/10.1117/12.465755
Event: Photonics Asia, 2002, Shanghai, China

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.

Citation Download Citation

Wan-bo Zheng, Zhi Liu, and Zhihang Hao "Construction of hierarchically indexed guide star database", Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); https://doi.org/10.1117/12.465755

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