一种基于有序统计的MIMO雷达CFAR检测器  

A CFAR Detector of MIMO Radar Based on Ordered Statistics

作　　者：王敦勇[1] 马晓岩[1] 袁俊泉[1] 王党卫[1] 

机构地区：[1]空军雷达学院,武汉430019

出　　处：《现代雷达》2009年第7期50-54,共5页Modern Radar

基　　金：国家自然科学基金项目(60772152)

摘　　要：针对多输入多输出(MIMO)雷达的体制特点,提出了一种基于有序统计的MIMO雷达CFAR检测器(LCIOSOS-CFAR),给出了虚警概率与检测概率的表达式;然后在各种杂波背景下对检测器性能进行了仿真分析,并与经典的CA-CFAR检测器进行比较。仿真结果表明,LCIOSOS-CFAR检测器在均匀杂波背景下较CA-CFAR有较小损失,在多目标干扰环境下较CA-CFAR性能改善明显,在杂波边缘背景下虚警峰值小于CA-CFAR,实际应用中具有较强的鲁棒性。文中还分析了序值选取对LCIOSOS-CFAR检测性能的影响。Aiming at the system characteristics of MIMO radar,a MIMO radar CFAR detectors（termed LCIOSOS-CFAR） based on ordered statistics is proposed. Firstly, formulas of false alarm probability and detection probability are given. Then detection performance under various clutter background is compared with classic CA-CFAR by simulation and analysis. The simulation results show that the performance of LCIOSOS-CFAR has low-loss for uniform clutter but it is improved greatly in multi-target interference compared with the CA-CFAR, and that the peak value of false alarm is smaller than CA-CFAR at clutter edge. So it is more robust than the CA-CFAR in practice. This paper also analyzes the effect of selection of order value on the detection performance of LCIOSOS - CFAR.

关 键 词：MIMO雷达 LCIOSOS—CFAR检测器 检测性能 

分 类 号：TN958[电子电信—信号与信息处理]