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http://dx.doi.org/10.5207/JIEIE.2004.18.5.112

Statistical Characteristics of the Electromagnetic Pulses Radiated from Intracloud Discharges  

Lee, Bok-Hee (인하대학교 전자전기공학부)
Jeong, Dong-Cheol (인하대학교 대학원 전기공학과)
Lee, Dong-Moon (인하대학교 대학원 전기공학과)
Ahn, Chang-Hwan (한국전력공사)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.18, no.5, 2004 , pp. 112-117 More about this Journal
Abstract
In this paper, in order to obtain the detailed information about lightning electromagnetic pulses, the electromagnetic pulses radiated from intracloud discharges were measured, and their characteristics and waveform parameters were analyzed statistically. The electromagnetic pulses produced by intracloud discharges are distinctly different with those by lightning return strokes. The zero-crossing times and the full pulse widths of the large bipolar electromagnetic pulses are gradually decreased as the stroke proceeds. Also, the electromagnetic pulses tend to be bipolar, with narrow and fast leader pulses superimposed on the initial half cycle. The mean numbers of leader pulses superimposed on the initial half cycle were 1.61$\pm$0.74 and 1.75$\pm$0.73 for the positive and negative polarities, respectively.
Keywords
Lightning; Intracloud discharges; Electromagnetic pulse; Waveform parameter;
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