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.
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)
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2024年第5期1544-1554,共11页
Systems Engineering and Electronics
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
electronic counter
intra-pulse frequency agility
time-frequency ridge line
wavelet transform
non-uniform interrupted sampling repeater jamming
parameters of jamming
作者简介
孙宗正(1998-),男,博士研究生,主要研究方向为雷达侦察与干扰;刘智星(1993-),男,博士研究生,主要研究方向为捷变雷达信号处理及抗干扰;肖国尧(1986-),男,副教授,博士,主要研究方向为多功能一体化微系统技术、数字阵列信号处理技术;齐晗廷(1987-),男,工程师,硕士,主要研究方向为雷达总体、电子对抗;通讯作者:全英汇(1981-),男,教授,博士,主要研究方向为电磁博弈对抗、敏捷雷达、遥感雷达。
