Development of newly designed VHF interferometer system for observing earthquake-related atmospheric anomalies

نویسندگان

  • Isao Yamamoto
  • Hironobu Fujiwara
  • Masashi Kamogawa
  • Atsushi Iyono
  • Valeri Kroumov
  • Takashi Azakami
چکیده

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.

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عنوان ژورنال:

دوره 85  شماره 

صفحات  -

تاریخ انتشار 2009