EFFECT OF RECEIVER BANDWIDTH ON ATMOSPHERIC RADIO NOISE BURSTS

Abstract

The paper gives a report of the investigations carried out by the author on the effect of receiver bandwidth on the audible radio noise burst parameters viz., the quasi-peak value, the duration of the noise burst and the time interval between successive noise bursts. Within the limits of accuracy of measurement, viz. ±50 msec, there is 110 effect of receiver bandwidth either on the duration of the noise burst Or The time interval between successive noise bursts. The quast peak value varies as the square root of the bandwidth from 300 Hz to 6 kHz, and this shows that the audible noise arising from a noise burst has lO be treated as a form of continuous noise and that it is not impulsive. At high frequenries, the square root bandwidth law breaks down. For both amplitude and time parameters, the distribution which is log-normal does not change with bandwidth, and the standard deviation i, unaffected by changes of bandwidth.