Radiation Intensity of Horizontal Wire Antennas Over Resistivity Anisotropic Earth
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.
resistivity anisotropichorizontal wire antennathree-dimensionalfinite element
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