浮空器光谱望远镜组合定姿算法研究  

Algorithm Research on Attitude Determination of Spectral Telescope Based on Aerostat

作　　者：郭伟峰 曹小涛[1] 杨维帆 王瀚 GUO Wei-feng;CAO Xiao-tao;YANG Wei-fan;WANG Han(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy Sciences,Changchun Jilin 130033,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院大学,北京100049

出　　处：《计算机仿真》2020年第9期180-183,286,共5页Computer Simulation

基　　金：国家自然科学基金资助项目(11703027)。

摘　　要：光谱望远镜指向及稳像控制系统的控制精度要求高,对光谱望远镜的姿态信息测量精度提出了更高要求。首先,针对组合定姿过程中k-ki时刻仅有角速度信息输出而无法精确连续定姿的问题,提出一种平滑滤波算法,依据k-ki时刻角速度信息与期望值偏差的分布,自适应的调整角速度信息对测量系统输出结果影响的权重,以便在仅以角速度信息为输入的情况下,预测方程能够准确的输出姿态信息,进而保证姿态信息输出的连续性。其次,利用广义kalman滤波器对光谱望远镜的姿态信息进行校正,提高光谱望远镜的定姿精度。最终,仿真结果表明,角度信息输出速率为100hz,满足控制系统对姿态信息连续性的要求;姿态估计误差优于1.5″,光谱望远镜姿态测量系统的数据输出误差达到控制系统对该信息的要求。The spectral telescope pointing and image stabilization control system has high control precision re⁃quirements,and puts higher requirements on the accuracy of attitude information measurement of the spectral tele⁃scope.Firstly,aiming at the problem that the angular velocity information output can only be accurately and continu⁃ously fixed at thek-ki moment in the combined attitude,a smoothing algorithm is proposed.According to the distribu⁃tion of the angular velocity information and the expected value deviation at the k-ki moment,the adaptive adjustment was made.The angular velocity information affects the weight of the measurement system output,so that the prediction equation can accurately output the attitude information when the angular velocity information is only input,thereby en⁃suring the continuity of the attitude information output.Secondly,the generalized Kalman filter was used to correct the attitude information of the spectral telescope,and the accuracy of the spectacle telescope was improved.Finally,the simulation results show that the accurate Angle information output rate is 100hz,which meets the requirements of the control system for the continuity of attitude information.The error of attitude estimation is better than 1.5,and the da⁃ta output precision of the spectral telescope attitude measurement system meets the requirement of the control system.

关 键 词：组合定姿 广义卡尔曼滤波 平滑滤波 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构] TP391.9[自动化与计算机技术—计算机科学与技术]