摘要
作为一种新型的有源干扰样式,间歇采样转发干扰(ISRJ)引起了人们越来越多的关注。极化是表征电磁波矢量性的重要参数,其引入可以显著提高雷达在抗干扰方面的性能。为此,该文针对性地研究了全极化雷达的抗ISRJ方法,通过波形设计和优化以获取比传统单极化雷达更好的抗干扰性能。另外,针对宽带雷达条件下现有抗ISRJ问题表征中未考虑目标特性对信号调制作用这一短板,该文在信干比的数学表达式中加入了目标特性调制这一因素。在此基础上,提出了一种具有多普勒容忍的抗ISRJ全极化雷达波形设计方法。采用实测目标数据开展的实验表明:与单极化雷达相比,极化信息的引入显著提高了雷达对ISRJ的抑制性能;宽带条件下,考虑扩展目标对信号的调制作用在信干比的计算上具有必要性。
Interrupted Sampling Repeater Jamming(ISRJ)has attracted increasing attention as a new type of active jamming.Polarization is an important parameter for characterizing an electromagnetic wave vector and can substantially improve radar anti-jamming performance.Therefore,in this study,the anti-ISRJ method of polarimetric radar is studied.Here,better anti-jamming performance than that of traditional radar is obtained through waveform design and optimization.Additionally,because the modulation effect of target characteristics on a signal is neglected in the existing characterization of the anti-ISRJ problem under wideband radar conditions,this paper includes target characteristics factors to the mathematical expression of SJR.Finally,on this basis,a waveform design method of anti-ISRJ polarimetric radar with Doppler tolerance is proposed.Experiments using the measured target data show that compared with traditional radar,the introduction of polarization information improves substantially radar ISRJ suppression performance;moreover,under wideband conditions,the modulation effect of the extended target on the signal must be considered when calculating SJR.
作者
王伟
李梦良
王福来
饶彬
程旭
WANG Wei;LI Mengliang;WANG Fulai;RAO Bin;CHENG Xu(School of Electronic and Communication Engineering,Sun Yat-Sen University,Shenzhen 518107,China;College of Electronic Science,National University of Defense Technology,Changsha 410073,China)
出处
《电子与信息学报》
EI
CSCD
北大核心
2023年第11期3877-3886,共10页
Journal of Electronics & Information Technology
基金
深圳市科技计划(KQTD20190929172704911)
国家部委基金(614222119021)。
关键词
间歇采样转发干扰
全极化雷达
波形设计
扩展目标
Interrupted Sampling Repeater Jamming(ISRJ)
Polarimetric radar
Waveform design
Extended target
