航天器初始飞行段雷测系统误差估计方法与算法

在航天器初始飞行段的跟踪数据中，假设光测数据含有常值系统误差，连续波雷达系统的距离和／差数据含有二次项系统误差和折射残差，距离和／差变化率数据含有线性系统误差和折射残差。利用样条函数表示轨道，建立了系统误差和航天器轨道的非线性模型，给出了系统误差和轨道的高精度估计方法和算法。

ESTIMATING METHODS AND ALGORITHM OF SYSTEMATIC ERRORS IN RADAR MEASURING DATA IN FIRST FLYING STAGE OF SPACE VEHICLE

In this paper,it is assumed that a series of errors are in consideration,which include the constant systematic error in optical measured data,the quadratic function systematic errors and refraction residual errors in MISTRAM system's positioning data and the linear errors and refraction residual errors in velocity data.Using splines to describe the trajectory of space vehicle,the author at first establishes a nonlinear regression model of trajectory parameters and systematic errors,and then gives a high precision nonlinear estimation method and algorithm of trajectory parameters and systematic errors.