光学学报, 2017, 37 (5): 0512002, 网络出版: 2017-05-05   

基于光度观测的空间目标姿态与角速度估计

Attitude and Angular Speed Estimation of Spacial Objects Based on Photometric Observation
作者单位
1 西安交通大学机械结构强度与振动国家重点实验室, 陕西 西安 710049
2 西安卫星测控中心宇航动力学国家重点实验室, 陕西 西安 710043
摘要
基于目标形状反射以及太阳、地球和空间目标三者的运动关系建立了空间目标的光度量测模型, 分析了姿态角、角速度和目标形状对光度观测数据的影响。建立了目标姿态角与角速度的运动学模型, 实现了对姿态和角速度的联合估计, 并探讨了算法的自适应估计能力。仿真结果表明, 该光度观测方案可实现未知姿态角与自旋角速度的估计, 姿态角和角速度缓慢变化时算法具备自适应估计能力, 但随着目标侧面数的增加, 姿态和角速度估计误差增大且算法收敛速度变慢。
Abstract
The photometric measuring model of spacial objects is established based on the shape reflection of the objects and the motion relationship among the sun, the earth and the spacial objects. The effects of the attitude, the angular speed, and the object shape on the photometric measuring data are analyzed. The kinematic model related to the attitude angle and the angular speed of the objects is established which realizes the joint estimation of the attitude and the angular speed, and the adaptive estimation capability of the algorithm is discussed. The simulation results shows that the photometric observation scheme can realize the joint estimation of unknown attitudes and angular speeds. The algorithm has an adaptive estimation ability when the attitude and the angular speed change slowly. However, with the increase of the side face number, the estimation errors of attitude and angular speed increase and the convergence rate of this algorithm decreases.
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单斌, 梁勇奇, 李恒年. 基于光度观测的空间目标姿态与角速度估计[J]. 光学学报, 2017, 37(5): 0512002. Shan Bin, Liang Yongqi, Li Hengnian. Attitude and Angular Speed Estimation of Spacial Objects Based on Photometric Observation[J]. Acta Optica Sinica, 2017, 37(5): 0512002.

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