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为了提高星敏感器定姿中星图识别的精度和效率,基于K矢量原理和四边形匹配法则提出一种改进的星图匹配方法:首先基于K矢量查找法快速匹配星间角距,得到角距的匹配组合;再采用一种基于标识符的快速判别方法进行导航星的判别,得到4颗匹配成功的基准星;最后基于4颗基准星按四边形匹配法则完成全视场的匹配。实验结果表明,该方法具有良好的实时性和准确性。
In order to improve the accuracy and efficiency of star image recognition in star pose, an improved star image matching method based on K-vector principle and quadrilateral matching rule is proposed. Firstly, the angular distance Then a discriminating method based on identifier is used to discriminate the navigational star. Four matched reference stars are obtained successfully. Finally, the matching of the full field of view is accomplished based on the four reference stars according to the quadrilateral matching rule. Experimental results show that this method has good real-time and accuracy.