矢量脱靶量测量系统定位算法研究

提出了一种基于空间目标运动轨迹提取的矢量脱靶量参数估计新方法。该方法利用不同接收天线接收的目标回波信号之间的相位差得到距离差,基于距离差定位方法获得目标运动轨迹的空间定位点序列。通过建立目标运动模型,采用固定区间Kalman平滑滤波的方法获得目标运动的较精确轨迹。利用平滑滤波后的空间位置点,通过对一组线性方程进行求解得到矢量脱靶量参数的估计。仿真结果表明该定位方法可以得到满意的脱靶量估计结果。

Research on location algorithm for vector miss distance measurement system

A new approach for estimating the vector parameters of the target is presented, which is based on the extraction of the target motion trajectory in space. The distance differences, which are got from the phase differences of echo signals between the different receiving antennas, are utilized to get the spatial localization point sequences of the target. Further the fixed-interval Kalman smoothing filter is adopted to obtain a more accurate target motion trajectory by constructing the motion model of the target. Then by utilizing the smoothed localization point, a set of linear equations is formed and the vector parameters are estimated. The simulation resuts of the performance of the proposed method indicate the validity in the parameter estimation of miss distance.