Abstract:

A smart jamming method for synthetic aperture radar（SAR） multiple targets based on noise convolutional modulation is proposed to address the shortcomings of traditional noise convolutional jamming that the position of the suppression area can’t be flexibly controlled in the azimuth direction. This method performs range frequency shift， azimuth phase shift， and convolutional modulation with noise templates on the intercepted signal to control the position of the suppression area. The intercepted signal is subjected to noise convolutional modulation with different frequencies and phase to control the number of suppression areas. Theoretical and simulation results show that the proposed method achieves flexible control of the position of the suppressed area in the azimuth and range directions， and achieves jamming from a single jammer to multiple areas to be covered， improving jamming gain and achieving great jamming effects. It has certain reference value for practical engineering applications.

Key words: synthetic aperture radar（SAR）, noise convolution, frequency shift, phase shift, multiple areas, smart jamming

摘要：

针对传统噪声卷积干扰存在的压制区域位置在方位向上不能灵活控制的缺陷，提出一种基于噪声卷积调制的SAR多区域灵巧干扰方法。该方法对截获信号进行距离向移频、方位向移相以及与噪声模板的卷积调制处理，以控制压制区域的位置；后对截获信号进行不同频率、相位的噪声卷积调制处理，以控制压制区域的数量。理论和仿真结果表明，所提方法实现了压制区域位置在方位向、距离向上的灵活控制，并实现了单一干扰机对多个待掩护区域的干扰，提高了干扰增益，干扰效果较好，对实际工程应用具有一定的参考价值。

关键词: 合成孔径雷达, 噪声卷积, 移频, 移相, 多区域, 灵巧干扰