针对散射波干扰对多通道合成孔径雷达-地面动目标显示(SAR-GMTI)的对抗性能展开研究,文中给出了散射波干扰原理,分析了散射波干扰在SAR距离向和方位向的干扰效果,采用三通道干涉对消技术分析了散射波干扰对多通道GMTI的对抗性能。理论分析和仿真实验表明:散射波干扰对多通道SAR-GMTI仍然具有假目标干扰效果,由于多通道GMTI对干扰的抑制和对消,假目标幅度受正弦调制系数的影响将出现增强区和削弱区。

The paper studies the countering performance of scatter-wave jamming to multi-channel synthetic aperture radar-ground moving target indication(SAR-GMTI). The scatter-wave jamming theory is proposed, and its jamming performance to SAR in range and azimuth is analyzed in detail. Then, the countering performance against GMTI is analyzed by using the tri-channel interference cancelling technique. Theoretical analysis and computer simulation show that: scatter-wave jamming still can produce false targets jamming performance for multi-channel SAR-GMTI, and due to interference suppression and cancellation of multi-channel GMTI, the amplitudes of false targets have enhanced and weakened areas under the influence of sinusoidal modulation coefficient.

TN974