宽带雷达组网协同抗欺骗式干扰方法  

Collaborative Anti Deception Jamming Method for Broadband Radar Networking

作　　者：赵珊珊 苗嘉宁 刘子威 ZHAO Shanshan;MIAO Jianing;LIU Ziwei(College of Electronic and Optical Engineering,Nanjing University of Posts and Telecommunications,Nanjing,Jiangsu 210023,China;School of Communications and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing,Jiangsu 210003,China)

机构地区：[1]南京邮电大学电子与光学工程学院,江苏南京210023 [2]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《信号处理》2024年第9期1738-1747,共10页Journal of Signal Processing

基　　金：国家自然科学基金(61801233);国防科技重点实验室基金(JKW202209)。

摘　　要：现代雷达为了实现目标侦察功能,一般会使用相应的电子抗干扰技术,而强大的抗干扰能力则是其在复杂的电磁干扰条件下完成任务的重要保证。现有组网雷达抗干扰技术大多针对窄带组网雷达,而宽带雷达相对于窄带雷达具有更高的分辨率,可以探测目标更加全面的信息,达到更好的抗干扰效果。针对宽带组网雷达下的抗欺骗式干扰方法,现有研究直接类比窄带雷达抗欺骗式干扰方法,假设真实目标在每个距离单元的回波矢量独立同分布,并没有从理论上分析多视角一维距离像去相关的内在原因。针对此问题,本文推导了真实目标的三维散射中心模型投影得到目标多视角一维距离像的过程,并以此为基础,分析了真假目标一维距离像在各雷达站中的差异,及真实目标一维距离像在不同宽带雷达中的同源非一致性与转发式欺骗干扰在不同宽带雷达中的同源一致性。基于此差异,进一步提出了一种在宽带雷达组网条件下,基于一维距离像相关性差异的抗欺骗式干扰方法,设计了鉴别统计量并分析了基于累积分布函数的闭式鉴别性能。计算机仿真结果表明,本文所提方法体系能够有效对抗宽带欺骗式干扰,且鉴别性能相对于目标尺寸来说较为稳健。The rapid development of modern electronic warfare,represented by electronic interference,poses a serious challenge and threat to the working performance and survivability of radar systems.To realize the target reconnaissance function,modern radars generally use the corresponding electronic anti-jamming technology,which is essential for these radars to successfully complete tasks under complex electromagnetic interference conditions.Active spoofed jam‐ming is an important form of electronic jamming,wherein the jammer receives the transmitted signal of the radar,modulates the signal,and forwards a signal similar to the real target echo.The radar then receives the false target echo,which causes it to misjudge the target or increase the radar tracking system’s error.Wideband radar networking technol‐ogy has been applied to areas such as anti-stealth,target recognition,and target information extraction.Most existing anti-jamming technologies orf networked radars focus on narrow-band networked radars.However,broadband radars have higher resolution,can detect more comprehensive information about the target,and achieve better anti-jamming ef‐fects than narrow-band radars.For anti-spoofing jamming methods under wideband networked radars,existing studies directly compare the anti-spoofing jamming methods of narrowband radars,assuming that the echo vector of the real tar‐get in each range unit is independently and equally distributed,and have not theoretically analyzed the internal reasons for the multi-view one-dimensional range image de-correlation.To address this issue,this study proposes a process for obtaining a multi-view one-dimensional range image via the projection of the three-dimensional scattering center model of the real target and analyzes the difference between the true and false one-dimensional range images in each radar sta‐tion,as well as the homologous inconsistency of the real target in different wideband radars and the homologous consis‐tency of the forwarded spoof-jamming in different wi

关 键 词：电子抗干扰 宽带组网雷达 抗欺骗式干扰 高分辨一维距离像 相关系数 

分 类 号：TN973[电子电信—信号与信息处理]