基于时域滤波信号重组的抗切片式干扰方法  

Anti-slicing jamming method based on time-domain filtering and signal reorganization

作　　者：王晓戈 陈辉[1] 倪柳柳 倪萌钰 WANG Xiaoge;CHEN Hui;NI Liuliu;NI Mengyu(Air Force Early Warning Academy,Wuhan 430019,China)

机构地区：[1]空军预警学院,武汉430019

出　　处：《空军预警学院学报》2020年第5期351-355,共5页Journal of Air Force Early Warning Academy

摘　　要：基于数字射频存储器(DRFM)的切片式干扰同时兼具压制性和欺骗性的特点,对雷达的目标检测造成巨大威胁.为此提出了一种基于时域滤波信号重组的抗切片式干扰方法.首先针对噪声乘积调制的切片式干扰,在时域上计算检测门限来判断干扰带并置零;然后对干扰抑制后的回波信号和雷达发射信号进行重组;最后将重组后的回波信号与发射信号进行脉冲压缩得到真实目标.仿真结果表明,该方法能有效地抑制切片式干扰并抑制距离旁瓣.The slicing jamming based on digital radio frequency memory(DRFM)has the characteristics of both suppression and deception,which poses a great threat to radar target detection.In view of this,the paper proposes an anti-slicing jamming method based on time domain filtering and signal reorganization.Firstly,aimed at slicing jamming with noise product modulation,the paper calculates the detection threshold in time domain to judge the interference band and set zero,and then reconstructs the echo signal after the interference suppression and the radar emission signal.Finally,the real target is obtained by pulse compression of the reconstructed echo signal and the transmitted signal.Simulation results show that the proposed method can effectively suppress both the slicing jamming and the range side lobes.

关 键 词：抗干扰方法 切片式干扰 时域滤波 信号重组 

分 类 号：TN973[电子电信—信号与信息处理]