对SAR⁃GMTI复杂间歇采样转发干扰

Complex intermittent sampling repeater jamming against SAR⁃GMTI

通过在脉间改变间歇采样转发干扰的采样周期及占空比,提出了复杂间歇采样转发干扰,该干扰能够在SAR和GMTI图像中形成多个沿距离向等间隔或非等间隔分布的方位向压制条带。条带的距离向间隔与间歇采样周期成反比,距离向宽度与间歇采样周期和占空比变化范围成正比。仿真证明了理论分析的正确性。

By changing the sampling period and duty ratio between pulses,complex intermittent sampling repeater jamming is proposed,which can form multiple azimuthal suppression bands with or without equal spacing along the range in both SAR and GMTI images.The range interval of the suppression strip is inversely proportional to the sampling period,while the range width of the strip is proportional to the variation range of the sam‑pling period and duty circle.Simulation results show the correctness of the theoretical analysis.