一种基于有序统计的鲁棒CFAR检测器  

A Robust CFAR Detector Based Ordered Statistic

作　　者：胡文琳[1] 王永良[2] 王首勇[2] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073 [2]空军雷达学院雷达兵器运用工程重点实验室,湖北武汉430019

出　　处：《电子学报》2007年第3期530-533,共4页Acta Electronica Sinica

基　　金：武器装备预研基金项目(No:51431040105JB4901);总装十一五预研项目(No.51307020204)

摘　　要：本文提出了一种基于有序统计(OS)的VI-CFAR检测器(OSVI-CFAR).在均匀杂波背景下OSVI-CFAR较基于均值水平(ML)的VI-CFAR检测器(MLVI-CFAR)有较小的CFAR损失,在杂波边缘背景下二者的虚警控制能力基本一致,但在多个干扰目标位置随机分布的背景下检测性能较MLVI-CFAR取得了较大改善,在实际杂波环境中具有更强的鲁棒性.最后给出了OSVI-CFAR检测器的一些重要特性.A robust VI-CFAR detector based on ordered statistic （termed OSVI-CFAR） is presented. In homogeneous environment,the OSVI-CFAR has a low-loss compared with the VI-CFAR based on mean level （termed MLVI-CFAR）. In clutter edge environment,the false alarm performance of this detector is almost consistent with the MLVI-CFAR detector. But in the situation that the interfering targets are located in reference window stochastically, the detection performance of the proposed detector is improved greatly. So it is more robust than the MLVI-CFAR in practice. Finally, some important properties of the OSVI-CFAR detector are indicated.

关 键 词：非均匀环境 恒虚警率 VI OSVI 

分 类 号：TN957.51[电子电信—信号与信息处理]