深空探测器接近段自主导航的滑动窗口自适应滤波方法

张文佳, 马辛

A Sliding Window Adaptive Filtering Algorithm for Autonomous Navigation of the Approach Phase of Deep Space Probe

ZHANG Wenjia, MA Xin

表4 滤波周期对导航方法精度的影响

Tab.4 Influence of filtering period on accuracy of navigation algorithm

T/s 估计误差平均值 估计误差最大值 位置/km 速度/(m·s-1) 位置/km 速度/(m·s-1) 120 3.106 5 0.158 1 51.003 11.904 3 300 4.103 0 0.167 8 78.635 12.492 3 600 8.323 4 0.297 6 146.019 11.173 0 900 7.797 1 0.280 2 102.540 9.872 7 1 200 11.574 0 0.538 7 109.420 56.290 3