基于并行FDTD方法的示波器机箱电磁脉冲耦合模拟

电磁脉冲可以通过示波器上的孔缝和裸露的电缆线耦合进机箱内部，使检测到的信号波形发生畸变，甚至可能毁坏内部器件。本文基于并行自适应结构网格应用支撑软件框架，采用大规模并行时域有限差分方法（FDTD）模拟不同极化方向高斯脉冲正入射示波器机箱的耦合。计算结果表明，在线极化的电磁脉冲照射下，示波器内部主极化和其他方向都存在电场分量，不同极化波耦合进入的能量衰减速度不同。

Coupling Effect Simulate of EMP into a Oscilloscope Case Based on the Parallel FDTD Method

Electromagnetic pulse(EMP) can couple into the oscilloscope case through the holes , slots and Bare cables. This effect can distort the detecting signals, even damage the internal devices. In this paper, a large scale parallel Finite-Difference Time-Domain (FDTD) method based on the J parallel Adaptive Structured Mesh applications Infrastructure (JASMIN) is proposed to analyse the coupling effect of EMP having different polarization direction into a oscilloscope case. Numerical results indicate that, with linear polarized EMP illuminating, the electric field in the oscilloscope consists of not only the main polarization component but also other components. The attenuation rate of energy coupling into the case is different.