基于间接量测的卫星相对导航  

Indirect Measurement-based Relative Navigation

作　　者：赵长山[1] 秦永元[1] 王献忠 游金川[1] 

机构地区：[1]西北工业大学自动化学院,西安710072 [2]上海航天控制工程研究所,上海200233

出　　处：《宇航学报》2008年第3期864-867,900,共5页Journal of Astronautics

基　　金：863项目(863-704)

摘　　要：研究了以微波雷达作为相对测量设备的追踪星与近圆轨道上运行的目标星之间的自主相对导航问题。通过对卫星相对运动方程简化得到了线性的卫星相对运动方程。采用以雷达输出确定的直角坐标系下的相对位置作为量测,避免了直接使用雷达输出作为量测时量测方程的非线性问题,并给出了间接量测噪声方差矩阵的构造方法。根据线性的相对运动方程和量测方程设计了基于标准卡尔曼滤波器的相对导航算法。根据某微波雷达的性能参数进行的仿真结果表明:该算法与采用雷达的直接输出和EKF的算法导航精度相当,然而该算法避免了求解雅可比矩阵的繁琐过程,使滤波器的设计工作得到简化。The relative navigation algorithm for the space maneuvering platforms in a circular orbit is studied. A method based on the indirect measurement of the micro-wave radar is presented. In this algorithm the linear CW equation is adopted as the system function. In order to avoid the complexity of using EKF, when using the out put of the radar directly, the radar＇ s output is transformed into its counterpart with respect to the Cartesian coordinates, which is referred to as the indirect measurement in this paper. Thus, both the system function and the out put function are linear, and the standard Kalman filter is adopted. Simulation results show that this algorithm can acquire the same navigation accuracy as the one using the direct measurement of the microwave radar.

关 键 词：相对导航 标准卡尔曼滤波 间接量测 

分 类 号：V488.224[航空宇航科学技术]