主从式编队卫星相对导航方法研究

编队卫星间精确的相对位置和速度信息的获取直接影响主从式编队卫星任务的完成.针对传统的集中式滤波算法在实时性和可靠性上的不足,提出利用联邦滤波算法对差分GPS和微波雷达信息进行融合,获得了满足编队任务要求的星间相对导航信息.其中差分GPS导航信息根据主从卫星的GPS测量信息获得;微波雷达通过测量卫星间的相对距离和角度来估算相对位置和速度.仿真结果表明,联邦滤波算法结合了差分GPS和微波雷达的优点,克服单一导航设备可能出现大误差的缺点,有效提高了测量精度,对主从式编队卫星完成飞行任务具有重要意义.

Relative Navigation of Satellite Formation Flying

Relative navigation for satellite formation flying is significant to complete the flight mission. In this paper, as the traditional filter is not good at dealing with the problem of real time and dependability, Federated Kalman Filter is used to blend the outputs of both DGPS and microwave radar in order to get accurate relative information and overcome the disadvantage of traditional filter. On the one hand, the information of relative state information is obtained with DGPS. On the other hand, the relativ...