方差均值平方比恒虚警检测器  

Variance and Mean Square Ratio CFAR Detector

作　　者：徐从安[1] 简涛[1] 何友[1] 顾新锋[1] 孙伟超[2] 

机构地区：[1]海军航空工程学院信息融合研究所,山东烟台264001 [2]海军航空工程学院研究生管理大队,山东烟台264001

出　　处：《电光与控制》2012年第9期59-62,共4页Electronics Optics & Control

基　　金：国家自然科学基金(60672140)

摘　　要：为了提高雷达恒虚警(Constant False Alarm Rate,CFAR)检测器在多目标背景下的鲁棒性,更好地检测目标,提出了一种新的基于方差均值平方比(VMSR)的恒虚警检测器,并建立了相应的检测器模型,得出了标称化因子T值和置信区间(a,b)。在均匀背景和多目标背景下,对VMSR检测器进行了仿真分析。在均匀背景下,VMSR检测性能优于OS,相比CA仅有很小的检测损失;在多目标背景下,VMSR检测性能相比OS得到了提升,特别是在干扰目标个数r>N-k时,OS不能有效检测出目标,而VMSR仍能保持较好的检测性能。结果表明,VMSR在多目标背景下检测性能优于OS,其在多目标背景下具有较强的鲁棒性。In order to improve the robust performance of the radar constant false alarm rate（CFAR） detector in multiple targets backgrounda new CFAR detector based on Variance and Mean Square Ratio（VMSR） is proposed and its detection architecture is given.The threshold multiplier factor T and the confidence interval（a,b） are also presented.The VMSR is evaluated through Monte-Carlo simulation in various environment.In homogeneous backgroundthe performance of VMSR shows a little worse than that of CA.In multiple targets background the detection performance improves obviously compared with the OS algorithm.Especially when the amount of interfering targets exceeds N-kthe VMSR keeps good performancewhile the OS can not detect the targets effectively.Results show that the VMSR is more robust than the OS in multiple targets background.

关 键 词：雷达目标检测 恒虚警率 多目标背景 方差均值平方比 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计] TN957.51[电子电信—信号与信息处理]