一种基于多普勒和距离维调制的SAR雷达二维乘性噪声干扰方法  

A Two-Dimensional Multiplicative Noise Jamming Method for SAR Radar Based on Doppler and Distance Modulation

作　　者：徐凯 冼友伦 李振兴 熊波 XU Kai;XIAN Youlun;LI Zhenxing;XIONG Bo(Southwest China Research Institute of Electronic Equipment,Chengdu 610036,China)

机构地区：[1]中国电子科技集团公司第二十九研究所,成都610036

出　　处：《电子信息对抗技术》2024年第6期21-25,共5页Electronic Information Warfare Technology

摘　　要：针对合成孔径雷达(Synthetic Aperture Radar,SAR)二维相干成像特点,采用二维乘性噪声干扰实现了距离维和方位维干扰的解耦合,灵活构造乘性噪声信号。形成一连串二维噪声假目标,产生的噪声亮斑点迹可控,得到的干扰回波作用在SAR雷达恒虚警率(Constant False Alarm Rate,CFAR)检测平面上,能量分布可控,可以对更普遍的SAR雷达检测算法起效。二维乘性噪声干扰方法作用于距离维的脉冲压缩和方位维的多普勒维调制,使得干扰信号的能量密度集中,提高了干扰效费比。In response to the two-dimensional coherent imaging characteristics of synthetic aperture radar(SAR),two-dimensional multiplicative noise jamming is used to decouple distance and azimuth jamming,and flexibly construct multiplicative noise signals.Forming a series of two-dimensional noise false targets,the generated noise bright spots are controllable.The jamming echo obtained acts on the constant false alarm rate(CFAR)detection plane of SAR radar,with controllable energy distribution,which can be effective for more common SAR radar detection algorithms.The two-dimensional multiplicative noise jamming method acts on pulse compression in the distance dimension and Doppler modulation in the azimuth dimension,concentrating the energy density of the jamming signal and improving the jamming cost-effectiveness ratio.

关 键 词：合成孔径雷达 乘性噪声干扰 距离维 脉冲多普勒 

分 类 号：TN974[电子电信—信号与信息处理]