星载GPS地球静止轨道卫星自主定轨的新算法

New Algorithm of Autonomous Orbit Determination of GEO Satellite Using GPS

针对地球静止轨道卫星的特点,提出了一种自主定轨的新算法———积分滤波算法,即利用Kalman滤波进行动力学模型数值积分与GPS定轨的有效融合。讨论了该算法的基本过程及其中Kalman滤波的数学模型和重要参数。最后给出了仿真实验过程和结果,证明了该算法的可行性。

Considering the feathers of GEO satellite, a new algorithm of autonomous orbit determination of GEO satellite using GPS is proposed in this paper,, which is integral and filtering. This algorithm integrates GPS with numerical integral of kinetic model by Kalman filtering. The process of this algorithm is described. The mathematic model and main parameters of Kalman filtering are discussed. The resuits of simulation are given at last, which demonstrate that this algorithm is adapted to autonomous orbit determination of GEO satellite using GPS.