SAR低空无源假目标欺骗干扰  

Deception Jamming of Low-Altitude Passive False Targets to SAR

作　　者：吴晓芳[1] 梁景修 焦逊[1] 

机构地区：[1]北方电子设备研究所,北京100191

出　　处：《电子对抗》2012年第3期14-18,46,共6页Electronic Warfare

基　　金：国家自然科学基金（60672033）

摘　　要：低空目标的成像会随着探测平台、SAR姿态角、飞行航过等因素的不同而呈现不同的相对图像特征。文章提出并研究了SAR的低空无源假目标欺骗干扰方法，该干扰方式利用低空目标的SAR成像特性，通过在低空中布置具有一定形状特征和散射特征的无源假目标可实现对常规二维SAR的随动欺骗以及对干涉SAR的三维欺骗效果。文中分析了不同飞行高度、飞行航过以及掠射角下，低空无源假目标的欺骗干扰效果，给出了低空气球、无人驾驶飞行器及吸收网等实现方式，实验分析了干扰效果变化特性。A low-altitude target will present different relative features in synthetic aperture radar （SAR） image as the image factors change, such as the carrier platform, observation angles and flight pass. Based on this, a deception jamming method of low-altitude passive false targets is proposed and studied. The proposed method makes use of the image characteristics of low-altitude targets, and can deceive both the traditional two dimensional SAR and InSAR systems by placing the false target with certain size and scattering characteristics at low altitude. The deceptive effect of low-ahitude passive false targets is analyzed with different flight height, flight pass and grazing angle. The proposed method can be carried out by low-altitude balloons, unmanned flyers and wire netting. Simulation experiments are carried to analyze the variation of jamming effect.

关 键 词：合成孔径雷达 低空 欺骗干扰 无源假目标 

分 类 号：TN958[电子电信—信号与信息处理]