地月转移轨道自主导航算法研究  

An Autonomous Navigation Algorithm for Earth-lunar Transfer Orbit

作　　者：乔国栋[1] 李铁寿[1] 王大轶[1] 

机构地区：[1]北京控制工程研究所空间智能控制技术国家级重点实验室,北京100190

出　　处：《航天控制》2008年第2期15-18,22,共5页Aerospace Control

摘　　要：本文给出一种地月转移段的自主导航算法。以紫外敏感器输出的月心像素和月心距等信息为观测量,利用基于UD分解的扩展卡尔曼滤波算法确定探测器的轨道。仿真结果表明,基于紫外敏感器的地月转移段自主导航是可行的,引入单程多普勒测速的组合导航算法可以有效地提高导航精度与收敛速度。In the paper, an autonomous navigation algorithm for the earth-lunar transfer orbit is presented. The outputs of ultraviolet sensors are the image elements of lunar centers and the distance between spacecraft and lunar center, which are observations. The transfer orbit is estimated by the extended Kalman filter （EKF） based on the UD factorization. The results of simulation demonstrate that the proposed autonomous navigation algorithm is feasible. On the other hand, the integrated navigation algorithm combined ultraviolet sensor with one-way Doppler measurements can improve convergence and achieve higher accuracy.

关 键 词：自主导航 转移轨道 紫外敏感器 多普勒测速 

分 类 号：V249.122[航空宇航科学与技术—飞行器设计]