Wang Zehao, Su Xiaolong, Hu Panhe, Liu Tianpeng, Sun Haobin, Liu Zhen
College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China.
iScience. 2025 Aug 6;28(9):113313. doi: 10.1016/j.isci.2025.113313. eCollection 2025 Sep 19.
Monopulse radar angle measurement technology is crucial for modern missile precision guidance systems due to its high accuracy and real-time capabilities. Cross-eye jamming (CEJ) is recognized as one of the most effective countermeasures against monopulse radar. However, traditional CEJ implementation requires complex amplitude and phase modulation through specialized hardware. The digital coding metasurface (DCM) is an advanced electromagnetic (EM) wave modulation technology. Synchronized modulation of phase and amplitude can be achieved by dynamically adjusting the digital coding state of each individual unit of the DCM. In this paper, a cross-eye jamming method based on DCM is proposed. The EM modulation model of DCM is derived, and it is theoretically demonstrated that cross-eye jamming signals can be generated by two DCMs. The simulation results demonstrate that the method attains more than twice the cross-eye gain when the error of the DCM phase modulation is maintained within 40°.
单脉冲雷达测角技术因其高精度和实时能力，对现代导弹精确制导系统至关重要。交叉眼干扰（CEJ）被认为是对抗单脉冲雷达最有效的对策之一。然而，传统的交叉眼干扰实施需要通过专门硬件进行复杂的幅度和相位调制。数字编码超表面（DCM）是一种先进的电磁波调制技术。通过动态调整DCM每个单元的数字编码状态，可以实现相位和幅度的同步调制。本文提出了一种基于DCM的交叉眼干扰方法。推导了DCM的电磁调制模型，并从理论上证明了两个DCM可以产生交叉眼干扰信号。仿真结果表明，当DCM相位调制误差保持在40°以内时，该方法获得的交叉眼增益超过两倍。
