Propagation Characteristic of Wideband Electromagnetic Wave in the Ionosphere
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概要
- 論文の詳細を見る
This paper analyzes propagation of wideband electromagnetic (EM) wave in the ionosphere. The influence of total electron contents (TEC) of the ionosphere on the propagation of EM wave is investigated numerically. Our attention is paid to very high frequency (VHF) band, which is dominant frequency band of EM waves emitted from lightning discharges. A one-dimensional model of the ionosphere is considered for simplicity. The ionosphere is treated as an anisotropic and dispersive medium. Particularly, the altitude distribution of electron density is taken into consideration. Variation of pulse width and difference in the arrival time between each frequency component due to the dispersion in the ionosphere are revealed. For our numerical investigation, group delay of the EM wave is found to be dependent on the altitude distribution of electron density, especially when the peak electron density is the order of 1012m-3 or more.
- 社団法人 電気学会の論文
- 2006-11-01
著者
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MORIMOTO Takeshi
Department of Ophthalmology, Osaka University Medical School
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TANIGUCHI TAKUMI
Department of Emergency and Critical Care Medicine Graduate School of Medical Science, Kanazawa Univ
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Kawasaki Zen-ichiro
Division Of Electrical Electric And Information Engineering Graduate School Of Engineering Osaka Uni
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Kawasaki Zen-ichiro
Department Of Communications Engineering Osaka University
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Morimoto Takeshi
Division Of Electrical Electric And Information Engineering Graduate School Of Engineering Osaka Uni
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Kawasaki Zen-ichiro
Osaka Univrsity
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Hirata Akimasa
Department Of Computer Science And Engineering Nagoya Institute Of Technology
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Morimoto Takeshi
Electric And Information Engineering Osaka University
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Morimoto Takeshi
Department Of Applied Visual Science Graduate School Of Medicine
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KAWASAKI Zen
Department of Communications Engineering, Osaka University
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Morimoto Takeshi
Department Of Communications Engineering Osaka University
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Taniguchi Takumi
Department Of Communications Engineering Osaka University
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Hirata Akimasa
Department Of Communication Engineering Graduate School Of Engineering Osaka University
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Kawasaki Zen
Department Of Communication Engineering Graduate School Of Engineering Osaka University
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Kawasaki Z
Faculty Of Engineering Toyama University
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Hirato Akimasa
Department of Computer Science and Engineering, Nagoya Institute of Technology
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