改进的合成孔径雷达间歇采样转发干扰

发布时间：2018-04-24 22:20

本文选题：合成孔径雷达 + 间歇采样转发干扰　；参考：《电波科学学报》2014年06期

【摘要】：针对合成孔径雷达欺骗干扰过程中雷达参数侦测困难以及传统间歇采样导致假目标滞后的问题,提出一种改进的间歇采样转发方式,通过对采样存储的信号进行处理,根据线性调频信号延迟与频率偏移耦合的特征达到假目标串前移的效果,从而有效保护干扰机附近区域的场景目标.定量分析了假目标位置与信号处理阶数和延迟量的关系,仿真给出了不同参数情况下假目标串的干扰效果.改进方法在保留了间歇采样所有优势的情况下,解决了假目标滞后的问题,同时也隐藏了传统移频干扰会导致中心频率偏移的特征,并且所形成假目标的位置与雷达信号调频斜率无关,适用于雷达脉间调频斜率捷变的情况.
[Abstract]:Aiming at the difficulty of radar parameter detection in the process of synthetic Aperture Radar deception jamming and the problem that the traditional intermittent sampling leads to false target lagging, an improved intermittent sampling and forwarding method is proposed to process the sampled and stored signals. According to the coupling characteristic of LFM signal delay and frequency offset, the pseudo-target string can be moved forward, which can effectively protect the scene target in the area near the jammer. The relationship between false target position and signal processing order and delay is quantitatively analyzed. The jamming effect of false target string under different parameters is given by simulation. The improved method not only preserves all the advantages of intermittent sampling, but also solves the problem of false target lag, and conceals the characteristic that the traditional frequency shift interference will lead to center frequency offset. And the position of the false target is independent of the frequency modulation slope of radar signal, which is suitable for the case of frequency modulation slope agility between radar pulses.
【作者单位】：南京理工大学电子工程技术研究中心;南京信息工程大学电子与信息工程学院;
【基金】：部预研基金(9140A07010713BQ02025;CASC04-02) 教育部博士点基金(20113219110018) 国家自然科学基金(批准号:61302188) 江苏省自然科学基金(批准号:BK20131005)
【分类号】：TN974

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