基于微动调制的FMCWSAR无源压制干扰方法  

Passive Barrage Jamming Method for FMCW SAR Based on Micro Motion Modulation

作　　者：朱启明[1] 梁颖[1] 李阳[1] 强海斌 翁海超[1] 

机构地区：[1]中国人民解放军95980部队,襄阳441100

出　　处：《计算机测量与控制》2017年第5期155-157,161,共4页Computer Measurement &Control

摘　　要：调频连续波(FMCW)合成孔径雷达(SAR)体积小、重量轻、成本低、功耗低等优点,在无人机等小型飞行平台中具有较大的应用潜力,对FMCW SAR的干扰也将成为目前干扰技术研究的重点;在构建旋转微动目标回波模型的基础上,分析了FMCW SAR旋转微动目标的干扰特性,并进一步提出了一种基于微动调制的FMCW SAR无源压制干扰方法;该方法利用旋转角反射器在距离向和方位向上形成的二维干扰条带,能够实现对被掩护目标的有效保护;文章详细分析了对FMCW SAR实施干扰时旋转角反射器的参数选择方法,并利用仿真实验验证了理论分析与所提无源压制干扰方法的有效性。The frequency modulated continuous wave(FMCW)synthetic aperture radar(SAR)has the properties of compact size,lightweight,low cost and low power dissipation,which provides great potential in the application of small unmanned aerial vehicle(UAV)platforms.The imaging characteristic of rotating target for FMCW SAR is analysed based on the construction of received signal model.In development,apassive barrage jamming method for FMCW SAR based on micro motion modulation is proposed.This method makes use of the rotating angular reflectors to form jamming strips in range and azimuth 2Ddirection,and then the target screened is protected effectively.The choice of the parameters of rotating angular reflectors is discussed in detail.Finally some simulations are given for validating the theoretical derivation and the effectiveness of the proposed passive barrage jamming method.

关 键 词：调频连续波合成孔径雷达 旋转角反射器 无源压制干扰 

分 类 号：TN957[电子电信—信号与信息处理]