@article{oai:nagoya.repo.nii.ac.jp:00020035,
 author = {NAKAI, Taketoshi and SAWAKATA, Kiyoshi},
 journal = {Proceedings of the Research Institute of Atmospherics, Nagoya University},
 month = {Mar},
 note = {The performance of a modified pulse height analyzer (P.H.A) is described. It is capable of measuring the occurrence frequency of the sample-amplitude-heights which are evaluated by sampling a continuous waveform within a given time interval. A measuring method of the amplitude probability distributions (A. P. D'. s.) is described referring to the atmospheric radio noise, where a 80 dB dynamic range of amplitude variations can be measured without saturation. The procedure of deriving A.P.D.'s, the average voltage, R.M.S. voltage and antilogarithm of the average logarithmic voltage are discussed from the data of the occurrence frequency of sample-amplitude-height. The measurements of atmospheric radio noise were made using a 3-dB bandwidth of 1 KHz at 50 KHz at Toyokawa in the summer, 1967. All the A.P.D.'s obtained have been compared with a series of theoretical distributions, the parameter γ1, which determines the amplitude characteristics of the impulses at an antenna have been deduced as the result of the comparison. The agreement found between the measured and theoretical distributions γ1 are shown for six 4h time blocks of a day and for a whole day. Diurnal variations of the three moments and the associated quantities are described. The plotting of the value of 20 log10 (R.M.S. voltage/ antilogarithm of the average logarithmic voltage) versus the value of 20 log10 (R.M.S. voltage / average voltage) is given for a 3-dB bandwidth of 1 KHz. It has been found that the present case significantly differs from an well known case obtained for various bandwidths.},
 pages = {1--16},
 title = {MEASUREMENT OF THE AMPLITUDE-PROBABILITY DISTRIBUTION AND THE THREE MOMENTS FOR ATMOSPHERIC NOISE},
 volume = {16},
 year = {1969}
}