基于单脉冲三维成像的抗交叉眼干扰方法

交叉眼干扰是针对末制导雷达实施的一种有效的角度欺骗干扰，使得导弹不能有效地跟踪并打击目标。针对这种主瓣干扰，现有末制导雷达缺乏较为有效的对抗措施。为此，本文提出一种基于单脉冲三维成像的抗交叉眼干扰方法。该方法首先对单脉冲雷达和、方位差、俯仰差3个通道信号在距离、多普勒两维上进行高分辨处理，通过测量各分辨单元的方位角和俯仰角，再结合距离信息得到目标三维像，然后利用目标的团聚效应设定合适的阈值，剔除由交叉眼干扰引起的目标尺寸之外的奇异点，从而得到干扰对抗后的测角结果，确保了导弹对目标的有效跟踪。仿真结果证明了这种抑制主瓣角度干扰措施具有一定的有效性。

Anti-cross-eye jamming method based on monopulse radar 3-D imaging

Cross-eye jamming is an effective angle deception jamming against terminal guidance radar, making the missiles unable to track and strike targets effectively. For this kind of main lobe interference, the existing terminal guidance radar lacks effective countermeasures. To this end, this paper proposes an anti-cross-eye jamming method based on monopulse radar 3-D imaging. The method first performs high-resolution processing on the three-channel signals of monopulse radar in the range and Doppler dimensions. By measuring the azimuth angles and pitch angles of each resolution unit, the 3-D image of the target is obtained by combining the distance information. The three-dimensional image is then used to set an appropriate threshold using the agglomeration effect of the target to eliminate the singular points outside the target size caused by cross-eye interference, so as to obtain the angle measurement result after the interference countermeasure, which ensures the effective tracking of the target by the missile. The simulation results prove the effectiveness of this method to suppress the main lobe angle interference.