摘要
对由星敏感器、陀螺、太阳敏感器和磁强计构成的组合姿态确定系统,建立了卫星确定系统模型、子系统滤波方程。基于信息融合设计了改进的联合滤波,讨论了信息分配因子确定,给出了改进的系统滤波流程。仿真结果表明:改进后卫星姿态确定的算法有能效提高卫星姿态的估计精度。
The system model of the attitude determination and filtering equation of the subsystem for satellite were established aim to the integrate attitude system consisting of the star sensor, gyro, sun sensor and magnetometer in this paper. The improved federated filtering was designed based on the information fusion. The determination of the information distribution factor was discussed. The improved flowchart of the system filtering was given out. The simulation results showed that the improved algorithm for the satellite attitude determination could improve the accuracy satellite attitude estimation effectively.
出处
《上海航天》
2013年第6期23-27,51,共6页
Aerospace Shanghai
关键词
卫星姿态确定
信息融合
联合滤波
分配因子
Satellite attitude determination~ Sensor fusion~ Federated filtering~ Information distribution factor
