国防科技大学学报
國防科技大學學報
국방과기대학학보
JOURNAL OF NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY
2014年
1期
74-81
,共8页
潘小义%王伟%冯德军%傅其祥%刘永才%王国玉
潘小義%王偉%馮德軍%傅其祥%劉永纔%王國玉
반소의%왕위%풍덕군%부기상%류영재%왕국옥
成像雷达%散射波干扰%脉冲分段转发%图像欺骗
成像雷達%散射波榦擾%脈遲分段轉髮%圖像欺騙
성상뢰체%산사파간우%맥충분단전발%도상기편
imaging radar%scatter-wave jamming%pulse separation and retransmission%image deception
多假目标图像欺骗是目前宽带雷达干扰的难点。针对宽带雷达中常用的线性调频(Linear Frequency Modulated,LFM)信号,提出一种脉冲分段排序转发干扰方法。结合散射波信号模型,推导了合成干扰信号二维成像输出形式,讨论了假目标图像个数、分辨率与分段数以及转发次序之间的关系,并进行了仿真实验。结果表明该干扰方法可较便捷地产生多个沿距离向分布的假目标图像。结果对于成像雷达图像欺骗干扰具有理论指导意义。
多假目標圖像欺騙是目前寬帶雷達榦擾的難點。針對寬帶雷達中常用的線性調頻(Linear Frequency Modulated,LFM)信號,提齣一種脈遲分段排序轉髮榦擾方法。結閤散射波信號模型,推導瞭閤成榦擾信號二維成像輸齣形式,討論瞭假目標圖像箇數、分辨率與分段數以及轉髮次序之間的關繫,併進行瞭倣真實驗。結果錶明該榦擾方法可較便捷地產生多箇沿距離嚮分佈的假目標圖像。結果對于成像雷達圖像欺騙榦擾具有理論指導意義。
다가목표도상기편시목전관대뢰체간우적난점。침대관대뢰체중상용적선성조빈(Linear Frequency Modulated,LFM)신호,제출일충맥충분단배서전발간우방법。결합산사파신호모형,추도료합성간우신호이유성상수출형식,토론료가목표도상개수、분변솔여분단수이급전발차서지간적관계,병진행료방진실험。결과표명해간우방법가교편첩지산생다개연거리향분포적가목표도상。결과대우성상뢰체도상기편간우구유이론지도의의。
Multiple false-target images deception is the thorny point in the jamming against broad-band imaging radars.A jamming approach of applying pulse separation is proposed and the retransmission the usual LFM signal of imaging radar is presented.Combined with the scatter-wave jamming model,the imaging of the jamming signal was expounded,and the ways to achieve a train false-target images along the down-range were analyzed.Based on the divided number and the retransmitted order,the number and the resolution of false-target images were described.Finally, the simulation results are presented and addressed.This work is helpful to the deception jamming against imaging radars.