CAJ | 학술논문

针对合成孔径雷达（SAR）信号存在着距离和多普勒频率之间耦合的特点，提出了一种利用 DRFM 进行SAR雷达信号的存储，并加入多普勒频移进行脉冲叠加噪声卷积的 SAR干扰新方法。通过真目标回波与滞后方向的假目标回波交叠，形成了类似于噪声的距离维压制干扰；在复制的干扰脉冲上叠加一个窄带的噪声信号，造成方位维的模糊来进行方位维干扰，达到对 SAR的二维相参压制干扰效果。
침대합성공경뢰체（SAR）신호존재착거리화다보륵빈솔지간우합적특점，제출료일충이용 DRFM 진행SAR뢰체신호적존저，병가입다보륵빈이진행맥충첩가조성권적적 SAR간우신방법。통과진목표회파여체후방향적가목표회파교첩，형성료유사우조성적거리유압제간우；재복제적간우맥충상첩가일개착대적조성신호，조성방위유적모호래진행방위유간우，체도대 SAR적이유상삼압제간우효과。
According to the characteristics of the coupling between the range and Doppler frequen-cy of SAR signal,this paper puts forward a new SAR interference method,which takes advantage of DRFM to store the SAR signal,and introduces the Doppler frequency shift to pulse superposi-tion noise convolution.By overlapping the echoes of real-target and false-target of lagging be-hind the direction,the suppression jamming similar to noise in direction dimension can be formed;overlapping a narrow band noise on the copied jamming pulse makes the ambiguity of bearing di-mension,which introduces interference in bearing dimension,thus the effect of 2D coherent sup-pressing jamming to SAR can be achieved.