Abstract
AN investigation is being made into ionospheric absorption, in which the instantaneous value of signal strength of a 9.15-Mc./s. radio wave at a distance of 788 km. from the emitter is recorded once a minute. It has been found that the usually assumed Rayleigh distribution of amplitudes1 is a poor fit to the observed distribution at times around local noon when ionospheric absorption is considerable.
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References
See, for example, “Ionospheric Radio Propagation” (National Bureau of Standards Circular 462, Washington, 1948).
McAllister, Proc. Roy. Soc., 29, 367 (1879).
Yuan, Ann. Math. Stats., 4, 30 (1933).
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ALLCOCK, G. Variability of Sky-Wave Radio Signals under Conditions of Ionospheric Absorption. Nature 166, 902–903 (1950). https://doi.org/10.1038/166902a0
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DOI: https://doi.org/10.1038/166902a0
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