基于测量数据误差特性求解轨道参数的方法

Computation of Trajectory Parameters based on Error Characteristics of Measurement Data

针对样条方法在计算级间分离、关机点、头体分离点附近的轨道参数时,由于样条节点不准确使轨道表示误差大的问题,提出了一种基于测量数据误差特性求解轨道参数的方法,可以成量级地降低测量数据在关键点上的表示误差,同时提高轨道参数精度,缩短数据计算迭代时间,这对于快速提供高精度的轨道参数更具有现实意义。

Inaccuracy of spline nodes results in outstanding error of trajectory expressions when using spline method to compute trajectory parameters,especially separation of different segments,power-off point and the point of detachment of the head from the body.To solve this problem,this paper proposes a trajectory parameter computation method based on error characteristics of measurement data.The method greatly reduces error of measurement data at critical points while improving the accuracy of trajectory parameters and shortening the iteration time of data processing,which are of practical significance to quick provision of high accuracy orbit parameters.