两层损耗土壤媒质附近HEMP环境  

HEMP Environment Over Two-layer Lossy Soil

作　　者：孙蓓云[1] 周辉[1] 

机构地区：[1]西北核技术研究所,陕西西安710024

出　　处：《核电子学与探测技术》2013年第5期572-575,共4页Nuclear Electronics & Detection Technology

摘　　要：介绍了分层损耗媒质反射波的计算方法,计算了大地由一定厚度的干土和湿土构成时,x方向和z方向的HEMP反射波及地面附近电磁环境。计算结果表明x方向和z方向的反射波都有双峰,第2个峰出现的时间与第1层土壤的厚度有关;地面附近x方向HEMP环境场波尾的幅度较单层的会有下降,而z方向较单层的会有增加。To understand the HEMP environment near ground is important for HEMP effects research of ground - base electrical system. The methods to calculate the reflection wave of plane wave and eleetromagnetie envi- ronment over two - layer lossy media are presented. The reflection wave and electromagnetic environment of HEMP over two - layered soil are calculated. The results indicate that there are two peaks in the reflection wave and the time of the second peak is determined by the thickness of the first layer soil. The tail - wave amplitude of x - direction HEMP environment is reduced than one layer＇s, and the tail - wave amplitude of z - direction is increased.

关 键 词：高空核爆电磁脉冲(HEMP) 反射波 分层媒质 土壤 

分 类 号：O441[理学—电磁学]