CAJ | 학술논문

通过有源干扰照射箔条诱饵所形成的有源无源复合干扰,其本征多普勒频率特性是影响干扰效果的关键因素之一.通过建立干扰态势,分析出干扰方、被干扰方、箔条诱饵三者的位置、距离、角度关系,进而在不同条件下对目标回波、箔条回波、箔条转发干扰回波频率特性随时间的变化进行分析.结果表明,箔条转发干扰回波的本征多普勒频移与目标回波的多普勒频移不同,干扰方需通过频率调制,改变箔条转发干扰信号回波的频率特性,才能达到干扰的目的.
통과유원간우조사박조유이소형성적유원무원복합간우,기본정다보륵빈솔특성시영향간우효과적관건인소지일.통과건립간우태세,분석출간우방、피간우방、박조유이삼자적위치、거리、각도관계,진이재불동조건하대목표회파、박조회파、박조전발간우회파빈솔특성수시간적변화진행분석.결과표명,박조전발간우회파적본정다보륵빈이여목표회파적다보륵빈이불동,간우방수통과빈솔조제,개변박조전발간우신호회파적빈솔특성,재능체도간우적목적.
Active-passive-complex Electronic Counter Measures(ECM) is formed by chaff reflecting active-ECM signals,and the Native Doppler Frequency Feature(NDFF) is one of the key factors which are relative to jamming effects. By setting counter-situation, the positions, distances and angles of jammer, radar and chaff are obtained. The NDFF of targets echo, chaff echo, and repeater jamming echo signals of chaff are analyzed relative to time under several situations. And results show that the NDFF of echo repeater jamming signals is different from that of echo signals for target. The jammer must change the frequency features of echo repeater jamming signals by frequency-modulation so as to interfere with the radar.