一种轨道实时修正的空间目标定位算法

Space Target Positioning Method Based Angle and Orbit Information

在空间交会对接中,针对仅有角度信息时的目标航天器定位问题,提出了基于"当前"统计模型的递推卡尔曼被动定向跟踪算法,实现了对目标航天器的角度跟踪和预测,消除了角度误差。其次将角度滤波值与追踪航天器和目标航天器已知的轨道信息有机结合,完成了对二者之间距离的修正,实现了空间目标定位。仿真结果表明,此算法有较好的角度跟踪能力和目标定位能力,符合一定的工程需求。

In the spacecraft rendezvous and docking,target spacecraft tracking only by angle problems were analyzed.Based on the current statistical model,passive tracking method by Kalman filter was proposed and angle tracking and prediction was actualized.Then combined with orbit information of the two spacecraft,the range between them is corrected and the target spacecraft position is realized.The Monte-Carlo simulation shows the availability and practicability of the proposed algorithm.