Development of newly designed VHF interferometer system for observing earthquake-related atmospheric anomalies
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概要
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Temporal correlation between atmospheric anomalies and earthquakes has recently been verified statistically through measuring VHF FM radio waves transmitted beyond the line-of-sight. In order to locate the sources of such atmospheric anomalies, we developed a VHF interferometer system (bistatic-radar type) capable of finding the arrival direction of FM radio waves scattered possibly by earthquake-related atmospheric anomalies. In general, frequency modulation of FM radio waves produces ambiguity of arrival direction. However, our system, employing high-sampling rates of the order of kHz, can precisely measure the arrival direction of FM radio waves by stacking received signals.(Communicated by Seiya UYEDA, M.J.A.)
- 日本学士院の論文
著者
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YAMAMOTO Isao
Department of Neurosurgery, Yokohama City University School of Medicine
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Yamamoto Isao
Department Of Electronic Engineering Faculty Of Engineering Okayama University Of Science
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Kroumov Valeri
Department of Electronic Engineering, Okayama University of Science
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Kroumov Valeri
Department Of Electronic Engineering Okayama University Of Science
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FUJIWARA Hironobu
JSG High School
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KAMOGAWA Masashi
Department of Physics, Tokyo Gakugei University
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IYONO Atsushi
Department of Fundamental Science, Okayama University of Science
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AZAKAMI Takashi
Department of Information and Computer Engineering, Okayama University of Science
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Azakami Takashi
Department Of Electronic Engineering Nagoya Institute Of Technology
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YAMAMOTO Isao
Department of Information and Computer Engineering, Okayama University of Science
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