合成孔径雷达二维余弦调相转发干扰研究

该文提出一种新的SAR干扰方法:二维余弦调相转发干扰。该方法通过转发调制了余弦相位的SAR信号，使得SAR回波在距离向频域和方位向多普勒域成对扩展，实现了对SAR的多假目标干扰。理论研究表明，该干扰样式为二维相干干扰，能量利用率高，同时又具有非相干干扰的压制特点，通过优化设置干扰调制参数，可以形成紧凑的面假目标或网格状假目标串，达到掩护分布式目标的目的。仿真实验和基于实测数据的仿真验证了该方法的有效性。

The 2-D Cosinusoidal Phase Modulation Repeater Jamming of SAR

A new method of SAR jamming is proposed: the 2-D cosinusoidal phase modulation repeater jamming. This jamming method makes SAR echo extend both in range frequency domain and azimuth?Doppler domain via 2-D cosinusoidal phase modulation, and achieves the effect of multi-false targets. The research in principle shows: this jamming takes advantages of both efficient energy usage like 2-D coherent jamming and well suppression as non-coherent jamming. It can form tight flat shape false targets or grid shape false targets to protect distributed important targets, according to well configured jamming modulation parameters. Its validities are proved by the simulation and real data simulation.