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Title: Diurnal & Seasonal Variations in the Duty Cycle of Meteor Forward Scatter Communication
Authors: Rao, M Srirama
Rao, D A V Krishna
Rao, B Ramachandra
Rao, E Bhagiratha
Issue Date: Jun-1978
Publisher: NISCAIR-CSIR, India
Abstract: Diurnal and seasonal variations in the duty cycle of vhf (48"2 MHz) radio wave propagation, due to meteor forward scatter, between Dehra Dun and Waltair (distance 1760 km) have been studied. The diurnal variation is found to be sinusoidal with maximum at 0600 and minimum at 1800 hrs LT, as is expected from the apex and antapex effects on meteor activity. The seasonal variation shows a minimum around February and a general increase thereafter. The contribution to the duty cycle is found to be mostly from the under-dense meteor echoes. The most favourable time for communication in this link is found to be 0400-0800 hrs LT every day.
Page(s): 159-161
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.07(3) [June 1978]

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