非均匀间歇采样转发干扰对脉内捷变雷达影响分析  

Analysis of the influence of non uniform interrupted sampling repeater jamming on intra-pulse agile radar

作　　者：孙宗正 刘智星 肖国尧 齐晗廷 全英汇 SUN Zongzheng;LIU Zhixing;XIAO Guoyao;QI Hanting;QUAN Yinghui(School of Electronic Engineering,Xidian University,Xi’an 710071,China;Beijing Institute of Radio Measurement,Beijing 100854,China)

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071 [2]北京无线电测量研究所,北京100854

出　　处：《系统工程与电子技术》2024年第5期1544-1554,共11页Systems Engineering and Electronics

摘　　要：脉内频率捷变雷达通过自身“主动”抗干扰特性,利用传统间歇采样转发干扰的不连续性和周期性的特点,结合抗干扰算法,可以有效抑制间歇采样转发干扰。为提高干扰机对脉内频率捷变雷达的干扰效能,本文提出采用非均匀间歇采样转发干扰对脉内频率捷变雷达进行干扰,首先对截获到的脉内频率捷变雷达信号通过时频脊线提取与小波变换进行参数估计,获取子脉冲宽度,然后根据子脉冲宽度约束干扰参数,构造非均匀间歇采样转发干扰。理论分析和结果表明,通过非均匀间歇采样转发使得脉内频率捷变雷达在时频域等多域难以抑制干扰,极大地提升了干扰机的干扰能力。Intra-pulse frequency agile radar can effectively suppress interrupted sampling repeater jamming by its own“active”anti-jamming characteristics,taking advantage of the discontinuity and periodicity of traditional interrupted sampling repeater jamming,and combining with anti-jamming algorithms.In order to improve the jamming efficiency of the jammer against the intra-pulse frequency agile radar,this paper proposes to use the non-uniform interrupted sampling repeater jamming to jam the intra-pulse frequency agile radar.First,the intercepted intra-pulse frequency agile radar signal is estimated by time-frequency ridge extraction and wavelet transform to obtain the sub-pulse width,and then the non-uniform interrupted sampling repeater jamming is constructed according to the sub-pulse width constraint jamming parameters.Theoretical analysis and results show that it is difficult to suppress interference in intra-pulse frequency agility radar in time and frequency domain through non-uniform interrupted sampling repeater,which greatly improves the jamming ability of jammer.

关 键 词：电子对抗 脉内频率捷变 时频脊线 小波变换 非均匀间歇采样转发干扰 干扰参数 

分 类 号：TN972[电子电信—信号与信息处理]