距离扩展目标检测中的 强散射点自适应估计方法

高分辨雷达通过积累多个距离单元上的目标回波,达到提高距离扩展目标检测性能的目的。由于目标散射中心的稀疏分布,常规的能量积累检测方法存在陷落损失,而基于目标强散射点的积累检测方法可有效克服因陷落损失造成的检测性能下降问题。利用最大类间方差法对目标强散射点进行自适应估计,并通过仿真验证了该方法改善检测性能的有效性。

Strong Scattering Point Adaptive Estimation Method of Range-Extended Target Detection

High resolution radar accumulated target echo on multiple range cells to improve the detection performance ofrange-extended target. When the target scatterers are sparsely distributed, the conventional algorithm of energy accumula-tion and detection has the subsided loss. The detectors based on scatterers can make up the problem of performance degra-dation caused by the collapsing loss. In this paper, the otsu algorithm was adopted to adaptively obtain the information oftarget scatterers. The result of simulation experiment showed the efficiency of the method.