强激光打靶辐射电磁脉冲诱导线缆串扰模拟

以在神光II升级靶场使用九路激光打靶实测的电磁脉冲信号为输入源，建立平行线缆模型，研究电磁脉冲耦合电缆产生的串扰现象，揭示不同线缆间距、线缆长度受串扰的规律，以及线缆长度对串扰信号频率的影响机制。同时探讨铜箔屏蔽处理后对串扰信号的衰减。结果表明，增大平行线缆的间距有利于抑制串扰，增大线缆长度抗干扰能力减弱，谐振频率降低；屏蔽处理能有效抑制信号串扰，为高功率激光装置安全精确的开展各类物理诊断提供实验与理论支持。

Simulation of Cable Crosstalk Generated by Electromagnetic Induced by High-Power Laser Shooting Targets

In this study, the electromagnetic pulse (EMP) signals were measured at the Shenguang II Upgrade Range and used as the input source to establish a parallel cable model to reveal the crosstalk phenomenon generated by the EMP coupled cables. The law of crosstalk induced by varying cable distances and cable lengths were investigated, and the influence of cable length on the frequency of crosstalk signals was also unraveled. Meanwhile, the attenuation of the cable to the crosstalk signal after the copper foil shielding is discussed. The results indicate that increasing the distance between parallel cables is beneficial for suppression of crosstalk, while increasing the length of parallel cables reduce the anti-interference ability and lower resonance frequency. Therefore, proper shielding can effectively suppress signal crosstalk and provide experimental and theoretical support for implementing various physical diagnostics safely and accurately.