对SAR的随机脉冲卷积干扰研究

Study of Random Pulse Convolution Jamming to SAR

分析了一种合成孔径雷达有源干扰的新技术——随机脉冲卷积干扰。该干扰技术可以获得雷达距离压缩处理的部分增益,干扰效果明显优于等信噪比情况下的射频噪声压制干扰;它降低了干扰机实现压制干扰的输出功率,大大提高了干扰效率;通过控制随机脉冲的延迟时间和延迟范围,可以控制干扰带的位置和宽度,实现对己方重要分布目标的保护;仿真分析结果验证了该方法的有效性和可行性。

A new active jamming technique to synthetic aperture radar （SAR） is analyzed in this paper, the random pulse convolution jamming technique. This technique can receive part of the SAR＇s process gains, so it is superior to current noise blanket styles. It can reduce the jamming energy and improve the utility of jamming power greatly. By selecting the random pulse signal＇s initial time and terminal time, we can control the position and width of the jamming region, in order to suppress distributed targets. Theo- retical analysis and computer simulation justify the validity and efficiency of the new jamming technique.