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为了有效提高惯性/天文组合定姿效果,研究了在机动天基平台条件下惯性/天文导航的7种组合模式在姿态控制方面的应用,进行了理论分析,并对不同的组合模式的定姿结果进行了仿真实验。通过仿真分析了惯性/天文各种组合模式的优缺点,提出了不同组合模式的适用场合,当星敏感器识别恒星为两颗时,采用基于光轴指向的组合模式的效果好于使用星光单位矢量的组合模式;当星敏感器识别恒星超过两颗时,采用基于姿态矩阵的惯性/天文组合模式效果最好,能够更充分地利用星光信息、计算精度高、计算实时性好。
In order to effectively improve the inertial / astronomical combined attitude effects, the application of seven kinds of combined modes of inertial / astronomical navigation on the attitude control of mobile space-based platform is studied, and the theoretical analysis is carried out. The attitude and attitude of different combined modes Results of the simulation experiments. The advantages and disadvantages of various combinations of inertial and astronomical modes are analyzed by simulation, and the application of different combinations of modes is proposed. When the star sensor recognizes two stars, the combination mode based on the optical axis pointing is better than that using the star light unit Vector combination mode; when the star sensor recognizes more than two stars, the attitude / astronomical combination mode based on the attitude matrix is the best, which can make full use of the starlight information, and has high calculation precision and good real-time calculation.