Response of Layered Half-Space Obtained Directly in the Time Domain, Part I: SH Sources

2006 ◽  
Vol 96 (5) ◽  
pp. 1795-1809 ◽  
Author(s):  
J. Park ◽  
E. Kausel
Keyword(s):  
Half Space ◽  
Time Domain ◽  
The Time Domain ◽  
Layered Half Space

Time‐domain solution for horizontal coaxial dipoles on a half‐space

Geophysics ◽  
1986 ◽  
Vol 51 (9) ◽  
pp. 1850-1852 ◽  
Author(s):  
David C. Bartel
Keyword(s):  
Frequency Domain ◽  
Half Space ◽  
Time Domain ◽  
Inverse Laplace Transform ◽  
Direct Solution ◽  
Current Waveform ◽  
Laplace Domain ◽  
Homogeneous Half Space ◽  
The Time Domain ◽  
The Magnetic Field

The practice of transforming frequency‐domain results into the time domain is fairly common in electromagnetics. For certain classes of problems, it is possible to obtain a direct solution in the time domain. A summary of these solutions is given in Hohmann and Ward (1986). Presented here is another problem which can be solved directly in the time domain—the magnetic field of horizontal coaxial dipoles on the surface of a homogeneous half‐space. Solutions are presented for both an impulse transmitter current and a step turnon in the transmitter current. The solution in the time domain is obtained by taking the inverse Laplace transform of the product of the frequency‐domain solution and the Laplace‐domain representation of the current waveform.

scholarly journals A New Method to Calculate Induced Current of Thin Wire over Anisotropic Ground under HPM

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Le Cao
Keyword(s):  
Half Space ◽  
Time Domain ◽  
Response Analysis ◽  
Induced Current ◽  
Thin Wire ◽  
High Power Microwave ◽  
Time Response Analysis ◽  
Time Domain Integral Equation ◽  
The Time Domain ◽  
Power Microwave

The time response analysis of wire structures is often carried out in free space or isotropic half-space, but the real ground is usually layered and has anisotropic properties. In this paper, the induced current of a thin wire over layered anisotropic half-space under a high-power microwave (HPM) is calculated by using the time-domain integral equation (TDIE) method. The reflection coefficient of a layered anisotropic medium is obtained by the general transmitting matrix (GTM) method combined with Fourier transform. The variation of the induced current on the thin wire under different incident conditions is analyzed.

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