卫星编队飞行的相对轨道自主确定研究

为了研究卫星编队飞行相对轨道的自主确定,基于相对轨道根数建立编队卫星间的相对运动方程,利用测量所得到的星间距离和方位信息作为观测量。不同于目前广泛采用的扩展卡尔曼滤波算法,设计Unscented Kalman Filter(UKF)算法实现卫星编队飞行的相对轨道自主确定。仿真结果表明这种相对轨道自主确定方案能获得较高的定轨精度。

Autonomous Relative Orbit Determination for Satellite Formation Flying

In order to study the approach for autonomous determination of relative orbit for satellite formation flying,the relative motion equations of formation satellites were established based on orbit element differences.The inter-satellite distance and orientation measurements were chosen as the observation information.Instead of using the Extended Kalman Filter,the relative orbit state estimation was achieved through an Unscented Kalman Filter.The simulation results show that the relative orbit can be precisely determined by this method and it is validity for autonomous determination of relative orbit for formation satellite flying.