扩展卡尔曼粒子滤波在编队卫星相对轨道确定中的应用

Relative Orbit Determination for Satellite Formation Flying Based on Extended Kalman-particle Filter

考虑两星编队飞行情况,建立了惯性坐标系内卫星绝对运动方程,以激光和无线电测量获得相对观测量,利用扩展卡尔曼粒子滤波实现相对轨道高精度确定。结合实例进行了分析和仿真,结果表明EPF算法能够有效提高相对位置确定精度,并给出相对速度的高精度估计。

Regarding the situation of two-satellite formation flying,the equation of satellite absolute movement in the inertial frame is established,and the relative observation value is obtained by using laser and wireless measurements.The determination of high precision with relative orbit is achieved by applying the method of extended Kalman-particle filter（EPF）.Based on the simulation,the results show that the EPF is effective to improve the determination accuracy of the relative position,and the high precision estimation of relative velocity is presented.