Method and apparatus for determining return stroke polarity of distant lightning
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United States of America Patent
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Oct 6, 1992
Issued Date -
N/A
app pub date -
Oct 15, 1991
filing date -
Aug 23, 1990
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Expired
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Abstract
A method is described for determining the return stroke polarity of distant lightning for distances beyond 600 km by detecting the electric field associated with a return stroke of distant lightning, and processing the electric field signal to determine the polarity of the slow tail of the VLF waveform signal associated with the detected electric field. The polarity of the return stroke of distant lightning is determined based upon the polarity of the slow tail portion of the waveform.
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