联合定轨测量组合系统误差参数估计算法

Assorted System Errors Parameters Estimation Algorithm of Combined Orbit Determination

研究航天器数据测量,针对联合定轨距离和测元上可能存在的组合系统误差特性,在讨论各种典型系统误差诊断方法与参数估计算法的基础上,为了提高系统定轨精度,提出了一种基于奇偶方程的测量组合系统误差诊断识别方法,建立了联合定轨测量组合系统误差的参数估计算法。理论分析和仿真计算结果表明,提出的方法能够实现对联合定轨距离和测元上的多种类型的组合误差进行检测与参数估计,并取得满意结果。

Aiming at possible error types of combined orbit determination（COD） range-sum and measurement channels,a diagnosis and identification method of assorted system errors based on parity equation was brought forward under discussing errors diagnosis methods and parameters estimation algorithms of representative system errors,and the corresponding parameters estimation algorithm was presented subsequently.Theoretical analyses and simulation computations show that the presented method can check,segregate and estimate different system errors in COD range-sum measurement channels.