连续波雷达多站跟踪数据的时间对齐与轨道解算

TIME UNIFYING AND ORBIT ESTIMATION OF MULTI-STATION TRACKING DATA OF CONTINUOUS WAVE RADAR SYSTEM

连续波雷达是目前外火箭轨道测量的主要高精度设备。由于各种原因，各测站的时间不能完全一致，导致轨道解算的误差。文章对测量机理和时间不对齐量进行分析，利用轨道参数可以用多项式表述的特点，建立了一个估计时间不对齐量和轨道多项式系数的非线性回归模型，给出了参数估计方法和估计的误差。理论分析和模拟计算表明，用该方法可以给出轨道参数和各站时间不对齐量较高精度的估计。

he continuous wave radar system is the main equipment for high precision orbit observing at present.Effected by various factors,the time at different observation station are not all coincide,which leads to errors in the setimation of orbits.By detailed analysis of the observation principles and the time errors,with the advantages of the polynomial representation of the orbit,we establish a nonlinear regression model to estimate the time errors and the coefficients of the orbit polynomials.Further more,a method for parameter estimation and the errors of the estimations are presented.Theory analysis and practical examples show that our method offers higher precision for the estimation of orbits and time errors.