Abstract
The results of an investigation of UHF radiation from linear lightnings over the frequency range 100–1300 MHz are reported. The amplitude distribution of UHF signals in the range 400–900 MHz is in close agreement with normal-logarithmic law with a standard deviation of about 6 db. The flux intensity of radiation in this range is independent of frequency and equal to about 10−14 w/m2 Hz normalized to the distance from discharge of 1 km. The radiation over the decimetric wavelength is different from the common dipole emission of the lightning current. Over the range 10−5 to 10−2 sec the time-dependence data conform to a distribution for which the probability of UHF pulses of length more than T is proportional to 1/T.
Published Version
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