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Development of VLF / LF Bands Interferometer and Its Initial Observations
Author(s) -
Takayanagi Yuji,
Akita Manabu,
Nakamura Yoshitaka,
Yoshida Satoru,
Morimoto Takeshi,
Ushio Tomoo,
Kawasaki ZenIchiro,
Yamamoto Kenji
Publication year - 2013
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.22300
Subject(s) - interferometry , lightning (connector) , broadband , astronomical interferometer , physics , very high frequency , very low frequency , hiss , remote sensing , optics , electrical engineering , astronomy , geology , engineering , electron , power (physics) , quantum mechanics
Summary We have been developing an EM source location system using the VLF / LF bands based on broadband digital interferometry to monitor lightning activity in a wide area. Since EM waves in VLF / LF radiated by lightning discharges propagate a long distance, the VLF / LF interferometer locates lightning discharges a few hundred kilometers away from the VLF / LF interferometer. We conducted a lightning observation campaign using a prototype of a VLF / LF band digital interferometer and VHF band digital interferometers in Darwin, Australia. The VLF / LF radiation sources were located near those of the VHF source. We succeeded in locating the VLF / LF radiation sources associated with return strokes near the ground. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 185(4): 9–17, 2013; Published online in Wiley Online Library ( wileyonlinelibrary.com ). DOI 10.1002/eej.22300