Numerical Analysis of the Effects Caused by Ground Reflection on Aperture Coupling

Hong Lin Wu; Hao Yin; Wei Dong Shen; Hai Jun Meng; Xue Chao Tan

doi:10.4028/www.scientific.net/AMM.511-512.213

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 511-512Numerical Analysis of the Effects Caused by Ground...

Numerical Analysis of the Effects Caused by Ground Reflection on Aperture Coupling

Abstract:

In order to analyze the influence of the near-ground reflection on aperture coupling, a full-scale model of metal shelter with a lossy ground was constructed. The rules of aperture coupling of the High-altitude Electromagnetic Pulse were researched, while the angle of incidence, the conductance and relative permittivity of the ground were changed respectively. Then the strength of electric field inside the shelter was computed and compared when the shelter was above on different topography. Studies show that the coupling electromagnetic energy strengthen with the incident angle of plane wave increasing. When the conductance and relative permittivity of the ground gain, the main crest of the electric field substantially keeps constant, while the second crest increases dramatically. Sea surface has the strongest reflection of electromagnetic pulse, followed by sand land, then the mud land. The reflection of wet land is much stronger than dry land.

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Periodical:

Applied Mechanics and Materials (Volumes 511-512)

Pages:

213-217

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.511-512.213

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Online since:

February 2014

Authors:

Hong Lin Wu*, Hao Yin, Wei Dong Shen, Hai Jun Meng, Xue Chao Tan

Keywords:

Aperture Coupling, FITD, Ground Reflection, HEMP, Shelter

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* - Corresponding Author

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