FDTD Analysis of ELF Wave Propagation for Realistic Subionospheric Waveguide Models
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- Otsuyama Takuya
- Sales Engineering Depertment, Sankosha Co. Department of Electronic Engineering, The University of Electro-Communications
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- Hayakawa Masashi
- Department of Electronic Engineering, The University of Electro-Communications
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Abstract
The space formed by the ground and ionosphere is known to act as a resonator for extremely low frequency (ELF) waves. Lightning discharges trigger this global resonance, which is known as Schumann resonance. Even though the inhomogeneity (like day-night asymmetry, local perturbation etc.) is important for such a subionospheric ELF propagation, the previous analyses have been always made by some approximations because the problem is too complicated to be analyzed by any exact full-wave analysis. This paper presents the application of the conventional numerical FDTD (finite difference time domain) method to such a subionospheric ELF wave propagation, in which any kinds of inhomogeneities can be included in this analysis. The present paper is intended to demonstrate the workability of this method for a realistic waveguide (with day-night asymmetry), by comparing the results from this method with those by the corresponding analytical method.
Journal
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- IEEJ Transactions on Fundamentals and Materials
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IEEJ Transactions on Fundamentals and Materials 124 (12), 1203-1209, 2004
The Institute of Electrical Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390001204593077888
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- NII Article ID
- 10014125636
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- NII Book ID
- AN10136312
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- ISSN
- 13475533
- 03854205
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- NDL BIB ID
- 7169302
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed