基于梳状谱调制的相参多假目标干扰技术研究

A Study on Coherent Multi-false Target Jamming Modulated by Comb Spectrum

针对多时延复制叠加干扰、间歇采样转发干扰等新型相参多假目标干扰样式硬件实现结构复杂的问题,提出了一种基于梳状谱调制的相参多假目标干扰技术。该技术利用数字储频采集存储的雷达相参样本,与梳状谱进行时域调制,在占用较少硬件资源的条件下,实现对线性调频雷达回波目标的前置性相参多假目标遮蔽和掩护。文中对相参多假目标的产生进行了详细的理论推导和分析,通过仿真验证了对线性调频雷达干扰的有效性,并给出了一种易于实现的硬件方案。

Aimed at the question that the new coherent multi-false target jamming based on multiple time-delay repeater or interrupted-sampling repeater requires complex hardware structure to implement, the coherent multi-false target jamming modulated by comb spectrum is proposed in this paper, which is able to generate multi-false targets before real target in linear frequency modulation （LFM） radar by storing radar sample and modulating with comb spectrum in time domain under the condition of using less hardware resources. The derivation and analysis in theory of how to generate the coherent multi-false target is discussed, and the jamming effect on LFM radar is verified by simulation. A hardware design which can be realized more easier is given in the end.