外辐射源雷达系统中直达波干扰抑制技术  

Direct-Path Interference Suppression in External Illuminators-Based Radar System

作　　者：李辉[1,2] 何友[1] 周洪庆[2] 彭军[2] 

机构地区：[1]海军航空工程学院信息融合技术研究所,山东烟台264001 [2]海军航空工程学院新装备培训中心,山东烟台264001

出　　处：《火力与指挥控制》2013年第2期145-149,共5页Fire Control & Command Control

基　　金：国家自然科学基金资助项目(60972160;61002045)

摘　　要：对基于雷达辐射源的非合作双基地雷达中直达波干扰问题进行了理论分析,在此基础上仿真分析了直达波干扰对目标回波信号波形的影响。针对这一问题,提出了一种基于相位匹配的直达波干扰抑制方法,并给出了详细的数学推导。仿真结果表明该方法可以极大地抑制目标通道中的直达波干扰,提高目标通道的信干比,消除直达波干扰对后续信号检测的影响。The problem that the non-cooperation bistatie radar based on radar illuminator is affected by direct-path interence is analyzed. On the basis of the analysis, it simulates the waveform of the target echo under direct-path interfence. To mitigate this problem, a new method for direct-path interference suppression is proposed and a full mathematical derivation is provided in detail. The simulation results show that this method can effectively suppress the direct-path interference, improve the SIR （signal to interence ratio） of the target channel and eliminate the influence of the direct-path interference to subsequent signal detection.

关 键 词：双基地雷达 非合作 直达波干扰 相位匹配原理 

分 类 号：TN958.97[电子电信—信号与信息处理]