自主光学相对导航中序列图像最优构建方法  

Optimal Construction Method for Sequence Images in Autonomous Relative Optical Navigation

作　　者：孙博文 王大轶 周海银[1] 李茂登[3] 王炯琦[1] SUN Bowen;WANG Dayi;ZHOU Haiyin;LI Maodeng;WANG Jiongqi(National University of Defense Technology,Changsha 410073,China;Beijing Institute of Spacecraft System Engineering,Beijing 100094,China;Beijing Institute of Control Engineering,Bejing 100094,China)

机构地区：[1]国防科技大学理学院,长沙410073 [2]北京空间飞行器总体设计部,北京100094 [3]北京控制工程研究所,北京100094

出　　处：《宇航学报》2023年第6期926-933,共8页Journal of Astronautics

基　　金：国家自然科学基金(U20B2055,62203458);基础加强计划重点项目(2022-JCJQ-ZD-148-00);湖南省研究生科研创新项目(CX20210013)

摘　　要：针对状态估计误差的几何特性,提出了一种基于可观测度量化的自主光学相对导航序列图像最优构建方法。首先,通过分析自主光学相对导航系统可观测性来探究影响导航参数估计精度的关键因素;然后,依据状态估计误差几何特性,构建了相对导航系统可观测度指标;在此基础上建立了该指标与序列图像构建方式的映射关系,研究了序列图像最优构建方法。PRISMTA任务的数值仿真实验表明,提出的方法可有效提高自主光学相对导航精度。According to the geometric properties of the state estimation errors,an optimal construction method for sequence images in autonomous relative optical navigation based on observability index is proposed.Firstly,through the observability analysis of the autonomous relative optical navigation system,the key factors affecting the estimation accuracy of relative navigation are explored.Secondly,based on the geometric characteristics of the state estimation errors,the observability index of the relative navigation system is established.Finally,the mapping relationship between the observability index and the sequence image construction mode is quantified,the optimal sequence image construction mode is studied.PRISMTA numerical simulation results show that the proposed method can effectively improve the accuracy of autonomous relative optical navigation.

关 键 词：自主相对导航 光学导航 序列图像 相机安装偏置 可观测度 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]