【摘要】 在CCD星敏感器中,快速而可靠的星图识别算法成为星敏感器确定姿态的最关键部分。针对星图识别误匹配的存在,通过实验数据探讨了采用不同的星图识别特征、增加参与星图识别的恒星数目、提高恒星位置测量精度和星等测量精度、使用不同的星图匹配门限、选取合适导航星等方法,提高星图识别正确率。实验结果表明,采用这些方法后,星图正确匹配概率大大提高。更多还原

【Abstract】 For star sensors in CCD, a fast and reliable star map identification algorithm has been the most critical part for determining star sensor attitude. In view of mismatch existed in star map identification, star map identifiability is improved by methods such as using different star map characteristics, increasing star number involved in star identification, improving star position measuring accuracy and magnitude measuring accuracy, using different star map match thresholds and selecting suitable nautical star, etc. The experimental results show that the correct match probability of star map is largely improved after these methods being applied.更多还原