重复使用发射站数据的加权最小二乘定位方法

Weighted Least-square Estimation of Target Position by Repeated Using the Same Transmitter′s Measurement

利用加权最小二乘方法对多基地雷达目标定位。证明重复使用发射站测量信息将导致误差协方差矩阵奇异。通过在误差协方差矩阵中加入一个小的修正量,能够实现目标定位。仿真的GDOP曲线表明了改进方法的有效性。

Weighted Least-square method is utilized in this paper to estimate the target position in a multistatic radar system. It is theoretically proved that the error covariance matrix is singular when using the same transmitter＇ s measurement. In order to estimate the position accurately, a method based on modification of the covariance matrix is presented, and its effectiveness is shown bY the contour GDOP maps of simulations.