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卫星轨道估计中广义卡尔曼滤波算法改进
引用本文:薛申芳,金声震,宁书年,孙才红.卫星轨道估计中广义卡尔曼滤波算法改进[J].计算机工程与应用,2004,40(33):203-206.
作者姓名:薛申芳  金声震  宁书年  孙才红
作者单位:1. 中国矿业大学,北京,100083;中国矿业大学,北京,100083
2. 中国矿业大学,北京,100083
基金项目:中国科学院科技创新基金项目(编号:CXJJ-84)
摘    要:随着广义卡尔曼滤波越来越广泛的应用,其算法研究越来越深入。文章给出了一种轨道确定方法的广义尔曼滤模型,对广义卡尔曼滤波过程中的状态预报给出了一种修改算法———迭代算法,对这种迭代算法和RKF7(Runge-Kutta-Fehlberg7阶)算法所相应的滤波过程进行了计算机仿真,说明了离散误差对估计轨道的影响,迭代算法可以消减离散误差。通过把两种算法结果进行比较,表明迭代算法简捷、运行较快、且能达到一定的精度。

关 键 词:广义卡尔曼滤波  状态预报  迭代算法  轨道确定
文章编号:1002-8331-(2004)33-0203-04

The Extended Kalman Filtering Algorithm Improvement in Orbit Estimation
Xue Shenfang , Jin Shengzhen Ning Shunian Sun Caihong.The Extended Kalman Filtering Algorithm Improvement in Orbit Estimation[J].Computer Engineering and Applications,2004,40(33):203-206.
Authors:Xue Shenfang  Jin Shengzhen Ning Shunian Sun Caihong
Affiliation:Xue Shenfang 1,2 Jin Shengzhen 2 Ning Shunian 1 Sun Caihong 21
Abstract:The algorithm research about Kalman filtering is deeper and deeper with the development of its application in many applied fields.This paper presents a new improved algorithm of state prediction in extended Kalman Filtering process about orbit determination for satellite with astronomical method,namely iterated algorithm.The simulations of two filtering processes corresponding to the iterated algorithm and RKF7algorithm show the orbit error deriving from discretization and the effective of the iterated algorithm for diminishing the error.The comparison makes it clear that the iterated algorithm is concise,precise and quick in bring into effect.
Keywords:Extended Kalman Filtering  state prediction  iterated algorithm  orbit determination
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