基于拖曳式干扰机的ISAR微动散射波干扰方法

通过对微多普勒效应的研究，提出了一种新的逆合成孔径雷达（ISAR）散射波干扰方法。将拖曳式干扰机和ISAR接收机分别等效为双基ISAR的发射站和接收站，干扰机对截获的ISAR信号进行微动信息调制并转发至目标，由其散射至ISAR接收机产生散射波干扰效果。干扰信号经ISAR接收机处理后可在真实目标回波成像结果附近产生假目标，且在方位向形成干扰条带。实验结果表明：通过控制干扰机转发参数及微动调制参数可分别实现不同的压制干扰效果。由于拖曳式干扰机与目标距离较近，干扰信号可获得较大功率，且与真实目标回波相参，可获得ISAR二维脉冲压缩处理增益，与传统射频噪声压制干扰方法相比成本较小。

ISAR micro-Doppler scatter-wave jamming method based on towed jammer

Based on study of micro-Doppler effect, a new Inverse Synthetic Aperture Radar (ISAR) scatter-wave jamming method is proposed. The towed jammer and ISAR receiver can be regarded as the transmitter and receiver of bistatic ISAR, respectively. The towed jammer retransmits the intercepted ISAR signal with the modulated micro-motion information to the target, which then scatters the jamming signals to the ISAR receiver to result in scatter-wave jamming. The false-target image is induced near the image of the real target, and interfere bands are generated in the cross-range direction. The simulation results show that ISAR 2D imaging defocusing suppress jamming with micro-motion characteristics can be easily achieved by manipulating modulation parameters as well as transmission parameters. As the towed jammer is closer to the target, the transmitted jamming signal can easily obtain higher power. The jamming signal is coherent with the real target echo, so that ISAR 2D pulse compression processing gain can be obtained, which reduce the cost of jamming.