距离和与其变化率跟踪数据的时间对齐

航天运载器的精度分析需要高精度的量测数据，时间不对齐量是影响连续波雷达的主要误差源。利用样条函数，建立了关于连续波雷达所测距离和与其变化率之间时间不对齐量的精确的非线性回归模型，由此得到时间不对齐量的估计。理论分析和仿真计算表明，该方法具有很高的精度。该方法应用于实测数据处理，已取得令人满意的结果

Calibration of Time Error in Observation Data between Sum of Distance and Its Derivative

In the accuracy analysis of spacecraft, high accuracy observation data are needed. Time error is the main source of errors in continuous wave radar tracking system. By use of spline function, we build an accurate nonlinear regression model for time error in observation data between sum of distance and its derivative, and the estimation of time error is obtained. Theoretic analysis and simulation results show that this method has high accuracy. The method has been applied to the processing of actual observation data and the effect is satisfying.