电阻率各向异性架设场地对水平天线的影响
Radiation Intensity of Horizontal Wire Antennas Over Resistivity Anisotropic Earth
谢慧 1万露 1岳智彬1
作者信息
- 1. 海军工程大学电子工程学院 武汉 430033
- 折叠
摘要
论文研究了架设场地电导率各向异性,且呈现多维复杂结构时,对水平线天线辐射场的影响.根据可控源电磁法的正演算法提出了一种新的方法,通过引入一个复电导率将位移电流计算在内,使用基于规则六面体网格的矢量有限元法,实现了三维各向异性架设场地下,空间任意点的电磁响应数值模拟.通过设计一维电导率各向异性模型,对比了一维解析解算法与论文算法的计算结果,验证了论文方法的准确性.通过设计三维电导率异常体模型,计算了异常体相对于天线不同位置下的电场强度,指出靠近天线两端存在高电阻率异常体有利于水平线天线电磁辐射.
Abstract
In this paper,the influence of the multi-dimensional resistivity anisotropic earth on the radiant field excited by a horizontal wire antenna is studied.According to the forward algorithm of controlled source electromagnetic method,a new method is proposed.The displacement current is calculated by a complex conductivity.The vector finite element method based on regular hexa-hedron mesh is used to realize the numerical simulation of electromagnetic response at any point in space under three-dimensional anisotropic erection site.By designing a one-dimensional resistivity anisotropic model,the calculation results of the one-dimension-al analytical solution algorithm and the proposed algorithm are compared to verify the accuracy of the proposed method.By designing a three-dimensional resistivity anisotropic model,the electric field intensity excited by the antenna is calculated,when the abnor-mal body is in different positions.It is pointed out that the existence of high resistivity abnormal body near the two ends of the anten-na is beneficial to the electromagnetic radiation of the horizontal line antennas.
关键词
电阻率各向异性/水平线天线/三维/矢量有限元法Key words
resistivity anisotropic/horizontal wire antenna/three-dimensional/finite element引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据