基于FDA雷达的多径干扰抑制及目标检测  

Multipath Jamming Suppression and Target Detection Based on FDA Radar

作　　者：程婕 王文钦 侯宇典 贾文凯 贾亦真 CHENG Jie;WANG Wenqin;HOU Yudian;JIA Wenkai;JIA Yizhen(School of Information and Communication Engineering,University of Electronic Science and Technology of China,Chengdu,Sichuan 611731,China)

机构地区：[1]电子科技大学信息与通信工程学院,四川成都611731

出　　处：《信号处理》2022年第1期28-34,共7页Journal of Signal Processing

基　　金：基础加强计划重点基础研究项目(2019-JCJQ-ZD-008-00-3)。

摘　　要：针对机载雷达低空目标检测应用背景,本文建立低空入射角下FDA(Frequency diverse array)雷达目标探测中的修正型多径检测模型,提出基于FDA雷达的多径干扰抑制方法,并利用无训练数据广义似然比检测(Generalized Likelihood Ratio Test,GLRT)方法实现多径传播环境下的运动目标检测。仿真结果表明,FDA雷达频偏引起的距离-角度依赖性能够有效抑制低入射角下的多径反射回波,因而能够明显提升对低空目标的检测性能。Aiming at the application background of airborne radar low-altitude target detection,this paper establishes a modified multipath detection model for FDA(Frequency diverse array)radar target detection at low-altitude incident angles.Besides,a multipath interference suppression method based on FDA radar is proposed.And the generalized likelihood ratio test(GLRT)method with no training data realizes the detection of moving targets in a multipath propagation environment.The simulation results show that the range-angle dependence caused by the FDA radar frequency offset can effectively suppress the multipath reflected echoes at low incident angles,and thus can significantly improve the detection performance of low-altitude targets.

关 键 词：频控阵 目标检测 低入射角 多径效应 

分 类 号：TN95[电子电信—信号与信息处理]