天问一号火星探测器EDL过程自主导航技术  

Autonomous Navigation Technology of Tianwen-1 Mars Probe During EDL Process

作　　者：李茂登[1,2] 黄翔宇 徐超[1,2] 郭敏文 胡锦昌[1,2] 赵宇 刘旺旺[1] 王晓磊 徐李佳[1] 王云鹏 郝策[1] LI Mao-deng;HUANG Xiang-yu;XU Chao;GUO Min-wen;HU Jin-chang;ZHAO Yu;LIU Wang-wang;WANG Xiao-lei;XU Li-jia;WANG Yun-peng;HAO Ce(Beijing Institute of Control Engineering,Beijing 100094,China;Science and Technology on Space Intelligent Control Laboratory,Beijing 100094,China)

机构地区：[1]北京控制工程研究所,北京100094 [2]空间智能控制技术重点实验室,北京100094

出　　处：《宇航学报》2022年第1期11-20,共10页Journal of Astronautics

基　　金：国家自然科学基金(61503023,61673057,61803028,61903032)。

摘　　要：针对天问一号探测器进入、下降和着陆(EDL)过程的大动态、强不确定性给导航系统带来的挑战,基于多敏感器信息融合理论,设计了天问一号探测器高容错强自主着陆导航算法,以实现在EDL过程大不确定性、多敏感器故障以及陀螺饱和带来的姿态基准丢失情况下的导航状态准确可靠估计。天问一号探测器实际在轨飞行结果验证了自主导航系统设计的正确性和有效性。Aiming at the challenges of the large dynamic and strong uncertainty of Mars EDL process to the navigation system,based on the multi-sensor information fusion theory,a high fault-tolerant and strong autonomous landing navigation algorithm for Tianwen-1 is designed to achieve the accurate and reliable estimates of navigation state in the case of large uncertainty of EDL process,multi-sensor failure and loss of attitude reference caused by gyro saturation.The effectiveness of the navigation design has been verified by the actual flight results of Tianwen-1.

关 键 词：天问一号 进入、下降和着陆过程 自主导航 信息融合 

分 类 号：V448.253[航空宇航科学与技术—飞行器设计]