基于UD-EKF自主光学导航方法仿真

Research on Autonomous Optical Navigation Method Based on UD Algorithm

通过对深空探测器绕飞段自主轨道确定方法的研究,提出利用星敏感器及光学导航相机,通过对小行星附近多颗小天体夹角的测量并存储,同时结合几何关系,来实时确定飞行器轨道状态的一种基于UD分解的扩展卡尔曼滤波的光学自主导航的方案,并给出其UD分解构造算法;通过仿真验证了该方案可行性。

Through much research into methods on autonomous orbit determination of deep-space explorer, an autonomous optical navigation scheme based on UD and EKF was proposed to determine the circling orbit state in time, in which star sensor and navigation camera are used in measuring special angles between planetoids and explorer. And the UD algorithm was carried out and the scheme is feasible from the simulation result.