对步进线性调频成像雷达的间歇采样转发干扰方法

Interrupted sampling repeater jamming against stepped-frequency linear frequency modulation signal radar

摘要:

针对步进线性调频信号(stepped frequency-linear frequency modulation, SF-LFM)体制雷达对抗问题,提出了一种基于子脉冲间歇采样的干扰方法。通过对截获SF-LFM信号的子脉冲进行交替采样与转发,在雷达成像处理后可形成沿距离向延拓的逼真假目标。在此基础上对其干扰特性与参数设计问题进行了讨论,并分别通过一维理想散射点仿真与某型飞机二维成像数据仿真实验验证了所提方法有效性。

Abstract:

In this paper, the jamming method using sub-pulse interrupted sampling modulation was proposed against stepped frequency-linear frequency modulation(SF-LFM) imaging radar. The proposed method could form multi-false-target deception jamming spreading along the range direction by alternately sampling and repeating the intercepted sub-pulses. On the basis of this, the jamming features and parameter setting principles were further discussed. Finally, the validity of the proposed method was demonstrated by one-dimensional single scatterer and two-dimensional data simulations of an aircraft, respectively.