逆合成孔径雷达(ISAR)是一种高分辨率微波成像雷达体制,也是成像雷达的重点发展方向之一。由于其成像是通过对距离向和方位向二维压缩实现,因此比普通雷达具有更强的抗干扰能力。针对线性调频信号体制ISAR,提出一种基于补偿调制的电子伪装干扰方法,通过对截获到的敌方雷达辐射信号进行相位补偿调制模拟出目标任意散射点的回波信号并转发,达到了伪装干扰的目的。最后的仿真实验证明了所提方法的有效性。
ISAR is a kind of new microwave imaging system, which is the one of important perspective of imaging radar. Because of its imaging via two-dimension compress (range and cross-range compress), its anti-jamming capability is stronger than that of traditional radars. Aimed at chirp ISAR, a new electronic camouflage jamming method is proposed in this paper. In the method, on the basis of obtaining transmitted signal of opposite side, the phase compensating modulation can be utilized to simulate returned signal of any scatterer of the target. The camouflage jamming can be achieved via retransmitting simulated echo. The effectiveness of the proposed method can be proved by simulation results.