针对高分辨雷达在杂波环境下对距离扩展目标的检测问题,提出基于辅助数据矩阵估计的距离扩展目标检测器λ-GLRT,该方法利用已知杂波协方差矩阵得到目标检测器,结合辅助数据估计杂波协方差矩阵,将估计矩阵代入检测器,从而实现杂波抑制和目标检测的目的。仿真结果表明,提出的检测器比GMF和NMFI检测器有更优的目标检测性能,对杂波具有自适应性。

Aiming at the problem of detection of range spread target by high-resolution radar in clutter environment, a range spread target detector λ-GLRT based on the estimation of auxiliary data matrix is proposed. The algorithm uses the known clutter covariance matrix to obtain the target detector. Combined with the auxiliary data estimation clutter covariance matrix, the estimation matrix is substituted into the detector, so as to realize the purpose of clutter suppression and target detection. The simulation results show that the proposed detector has better target detection performance than GMF and NMFI detector, which is adaptive to clutter.