一种新的全天自主几何结构星图识别算法

A novel all-sky autonomous triangle-based star map recognition algorithm

提出了一种新的星图识别算法,该算法根据星敏感器的观测精度,在识别前去除星三角形的观测误差,对无误差的星三角形进行编码,构造特征量。导航三角形的识别只需基于单一特征量的匹配就可完成。多三角形的组合,有效地提高了正确识别率。仿真实验表明,该算法与传统的三角形算法相比,具有更好的实时性和鲁棒性。

A novel star map recognition algorithm is proposed. According to the observation accuracy of star sensor, the algorithm eliminates observation error of star triangle before recognition and codes the error-free star triangle to form characteristics quantity. The recognition for navigation triangle can only be carried out on the matching of single characteristics quantity. The combination of multi-triangle effectively improves correct recognition ratio. Simulation experiments show that compared with the traditional triangle algorithm, the proposed algorithm has better timeliness and robustness.