One-bit splitting deceptive jamming against SAR
One-bit splitting deceptive jamming against SAR
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DOI：
10.1016/j.dt.2021.09.018
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发表时间：
2021-09
影响因子：
5.1
通讯作者：
Bo Zhao;Lei Huang;Bing Li;Shi-qi Liu;Weimin Bao
中科院分区：
文献类型：
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作者：
Bo Zhao;Lei Huang;Bing Li;Shi-qi Liu;Weimin Bao
在合成孔径雷达（SAR）欺骗式干扰中，一比特量化具有保持性能和降低复杂度的优点，是一种很有前途的技术。本文利用1比特量化技术，在截获雷达信号后，在SAR图像中灵活地产生分裂假目标，在保证聚焦质量的前提下，显著降低了干扰机的复杂度。采用单频阈值对1比特量化产生的谐波进行分解，并通过不同的脉冲重复间隔来调整阈值参数，以提供可控调制。以这种方式，SAR信号在1比特拦截期间被分裂成耦合的假散射体。通过进一步部署幅度，时间延迟和多普勒频率调制的1位截获信号，分裂假目标创建。通过与不同欺骗干扰方法的比较，验证了该方法在有效性和成本方面的有效性，并给出了数值实验验证。
One-bit quantization is a promising technique due to its performance retention and complexity reduction in a deceptive jammer against synthetic aperture radar (SAR). In this paper, the 1-bit quantization technology is utilized to agilely generate split false targets in the SAR imagery once the radar signal is intercepted, which reduces the complexity of the jammer significantly with guaranteed focusing quality. A single-frequency threshold is used to decompose harmonics incurred by the 1-bit quantization, and its parameters are adjusted through different pulse repetition intervals to provide steerable modulations. In this way, the SAR signal is split into coupled false scatterers during the 1-bit interception. By further deploying amplitude, time-delay, and Doppler frequency modulations on the 1-bit intercepted signal, the split false targets are created. The proposed approach is compared with different deceptive jamming methods to show its validity in effectiveness and cost, and numerical experiments are also presented for verification.