摘要
根据宽带雷达高分辨一维距离像(High Resolution Range Profile,HRRP)成像原理,提出了一种基于散射中心调制的宽带雷达无源干扰技术。利用干扰物散射中心和目标散射中心叠加的干涉效应,通过控制干扰物的强度及分布,实现对目标区散射中心分布的调制,使原本可以被雷达区分开的散射中心重新聚连。该技术可以使雷达无法通过目标区一维距离像包络的起伏获取目标真实的散射中心分布,进而无法建立被干扰后的成像结果与目标的真实形状、尺度和空间位置等正确的关联关系,最终实现对宽带雷达HRRP成像的干扰。通过典型算例,仿真分析了干扰物的散射强度、干扰物和目标物之间的投影距离等关键参数对干扰效果的影响,验证了基于散射中心调制的宽带雷达干扰原理的可行性。
A jamming technology of scattering center modulation against wideband radar is proposed for HRRP.The interference effect of the scattering center formed by the interferent and the target is used to realize the modulation of the scattering center in the target area,by controlling the intensity and distribution of the interferent.The scattering center which can be separated by the radar is reconnected,the radar can not get the real distribution of the target's scattering center by HRRP,and then can not establish the correct relationship between the HRRP and the real target,so as to realize the interference of HRRP.Through the typical examples,the key parameters such as the scattering intensity of the interference and the distance between the jammers and the target effect is simulated and analyzed.The feasibility of wideband radar jamming principle based on electromagnetic scattering field interfering is verified.
作者
刘鑫
王雪松
孟刚
艾夏
崔逸纯
LIU Xin;WANG Xuesong;MENG Gang;AI Xia;CUI Yichun(National University of Defense Technology,Changsha,410073;National Key Laboratory of Science and Technology on Test Physics&Numerical Mathematics,Beijing,100076)
