在针对合成孔径雷达的干扰过程中，将雷达散射截面积较大的干扰目标放置在重要目标周围，使得SAR获得的图像中，重要目标隐藏在干扰目标的旁瓣之中，从而达到了保护重要目标不被SAR侦察到的目的。文中提出了一种二维数字聚焦抗干扰算法，在距离向和方位向均可以抑制强点目标干扰，这种干扰算法的性能优于常规数字聚焦抗干扰方法。计算机仿真验证了该方法的有效性。

Using large RCS passive jammers around important military target would hide important target in the sidelobe of the jammer, resulting in protection of real target. This paper proposes to use a two dimensional digital focusing algorithm to suppress such kind of jamming, through which effect of jammer with large RCS can be reduced in range or azimuth processing. The performance is better than conventional digital focusing anti-jamming technique. Computer simulation result verifies effectiveness of the method.

TN958