| 基于移频卷积的合成孔径雷达干扰技术研究 |
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| 引用本文： | 林欢,甘德云,李宏,范秋虎.基于移频卷积的合成孔径雷达干扰技术研究[J].军械工程学院学报,2014(4):47-50. |
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| 作者姓名： | 林欢 甘德云 李宏 范秋虎 |
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| 作者单位： | 中国洛阳电子装备试验中心,河南洛阳471003 |
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| 摘 要： | 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.
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| 关 键 词： | 合成孔径雷达 移频卷积干扰 二维相参 |
Interference Technology Research of Synthetic Aperture Radar Based on Frequency-Shift Convolution |
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| Institution: | LIN Huan, GAN De-yun, LI Hong, FAN Qiou-hu (Luoyang Electronic Equipment Test Center of China,Luoyang 471003,China) |
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| Abstract: | 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. |
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| Keywords: | synthetic aperture radar frequency-shift convolution jamming 2D coherent |
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