损耗大地对电缆耦合电磁脉冲的影响研究

依据传输线理论,利用快速傅立叶变换和反变换技术,计算了在核电磁脉冲作用下损耗大地上电缆屏蔽层上的感应电流。研究了有损耗大地的一些因素对电缆屏蔽层感应电流的影响,得到了规律性结论。计算了理想大地和有损耗大地上电缆屏蔽层的感应信号,并对比分析了两者对电缆感应信号的影响,得到有损耗大地增强了电缆上感应电流的强度的结论,分析认为是因为在有损耗大地上沿水平方向的电缆的切向电场激励比理想大地上的大。

Research on the Effect of Lossy Ground on Cable Coupling Electromagnetic Pulse

On the basis of transmission line theory and by using fast fourier transform and fast fourier inverse transform technique,the induced current in cable's shield was calculated.Some of the factors of the lossy ground that affect the induced current in cable's shield were investigate,and some regularity conclusions were reached.The induced currents in cable's shield on lossless ground and lossy ground were calculated and compared.The conclusion was that the lossy ground increased the current in cable's shield,...