Volume 32 Issue 08
Aug.  2006
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Jiang Jie, Li Xiao, Zhang Guangjun, et al. Fast star tracking technology in star sensor[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(08): 877-880. (in Chinese)
Citation: Jiang Jie, Li Xiao, Zhang Guangjun, et al. Fast star tracking technology in star sensor[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(08): 877-880. (in Chinese)

Fast star tracking technology in star sensor

  • Received Date: 23 Sep 2005
  • Publish Date: 31 Aug 2006
  • Tracking model is one of main models, when star sensor works. Speediness of tracking process affects star sensor′s performance. A fast star tracking algorithm was proposed. Three methods, such as star catalog partition, threshold mapping, sorting and matching, were designed for three time-consuming elements in tracking algorithm, in order to raise the tracking speed. Star catalog partition method divided the celestial sphere into some partitions. It made star mapping search in the partitions near the direction of star sensor′s visual axis not in the whole celestial sphere and reduced the total number of stars searched. Threshold mapping method in required accuracy condition, set a threshold of stars tracked. When the number of stars tracked was less than the threshold, star mapping was performed. It reduced mapping times. Sorting and matching method made sorting based on star′s coordinates in star image, and then matched. It avoided matching between stars which had a long distance. Simulation showed that application of these methods made this tracking algorithm faster, and improved the efficiency of star sensor.

     

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  • [1] 郑万波, 夏亮, 郝志航. 基于星敏感器的卫星瞬时姿态计算方法[J]. 吉林大学学报, 2003,21(3):28-30 Zheng Wanbo, Xia Liang, Hao Zhihang. Method calculating of satellitic instantaneous attitude based on star tracker[J]. Journal of Jilin University, 2003, 21(3):28-30(in Chinese) [2] 魏新国, 张广军, 江洁. 星敏感器中星图图像的星体细分定位方法研究[J]. 北京航空航天大学学报, 2003, 29(9):812-815 Wei Xinguo, Zhang Guangjun, Jiang Jie. Subdivided locating method of star image for star sensor[J]. Journal of Beijing University of Aeronautics and Astronautics, 2003, 29(9):812-815(in Chinese) [3] Liebe C C. Accuracy performance of star trackers:a tutorial.IEEE Transactions on Aerospace and Electronic Systems, 2002, 38(2):587-599 [4] Liebe C C. Star tracker for attitude determination [J]. IEEE Aerospace and Electronics Systems Magazine, 1995, 10(6):10-16 [5] 陈元枝, 郝志航, 王国辉. 适用于星敏感器的导航星星库制定[J]. 光学精密工程, 2002, 27(5):5-10 Chen Yuanzhi, Hao Zhihang, Wang Guohui. Constitution of guide star catalog for star sensor[J]. Optics and Precision Engineering, 2000, 27(5):5-10(in Chinese) [6] 许世文, 龙夫年, 付苓, 等. 实时星场模拟器中的坐标变换[J]. 哈尔滨工业大学学报, 1998, 30(5):118-120 Xu Shiwen, Long Funian, Fu Ling, et al. Coordinate transformation in real-time star field simulator[J]. Journal of Harbin Institute of Technology, 1998, 30(5):118-120(in Chinese) [7] 魏新国. 星敏感器中的星图识别方法及相关技术研究 . 北京:北京航空航天大学仪器科学与光电工程学院, 2004 Wei Xinguo. Star identification method for star sensor and related techniques . Beijing:School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, 2004(in Chinese)
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