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    Determining Polarities Of Distant Lightning Strokes (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Method for determining polarities of lightning strokes more than 400 km away. Two features of signal from each stroke correlated. New method based on fact each stroke observed thus far for which polarity determined unambiguously, initial polarity of tail same as polarity of initial deflection before initial-deflection signal altered by propagation effects. Receiving station equipped with electric-field-change antenna coupled to charge amplifier having time constant of order of 1 to 10 seconds. Output of amplifier fed to signal-processing circuitry, which determines initial polarity of tail.
    Keywords: PHYSICAL SCIENCES
    Type: MFS-26102 , NASA Tech Briefs (ISSN 0145-319X); 14; 6; P. 56
    Format: text
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