【摘要】 与电子系统相连的电缆被电磁脉冲感应形成的脉冲电流,构成了对电子系统的严重威胁。该文用时域有限差分法计算了大地电参数对感应电流的影响。计算获得了电缆上皮电流与电缆距地高度的关系,并与自由空间的结果进行了比较。更多还原

【Abstract】 The induced pulse current by EMP on cable that is connected to electric system threatens seriously the system. In this paper, the influence of conductivity and permittivity of plane ground on this current is calculated by FDTD method. The relationship between induced current and cable position above the earth is obtained, and the results are compared with the free-space case.更多还原