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Variation of 40 kHz Signal Level in Relation to Sunrise, Sunset and Climatic Condition

机译:与日出,日落和气候条件相关的40 kHz信号水平的变化

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The sunrise effect, sunset effect, the diurnal and seasonal variations are the characteristic feature of low frequency (LF) radio wave propagated over a large distance. The normal character has been found to be perturbed during rainy days. The amplitude of 40 kHz signal transmitted from Miyakoji station, Japan and received in North-East India is remarkably attenuated after the commencement of rain. On the basis of nature of attenuation the observed records have been classified into two different forms viz., F1 and F2. An analysis in this regard is represented in this paper.
机译:日出效果,日落效应,日元和季节变化是低频(LF)无线电波在大距离上传播的特征。在雨天期间发现正常的角色被发现扰乱。从Miyakoji站,日本传播的40 kHz信号的幅度在雨开始后显着衰减。在衰减的基础上,观察到的记录已被分为两种不同的形式,F1和F2。本文表示这方面的分析。

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