Correlation of Equatorial Ionospheric Scintillation at 327 MHz over 3.2 km

Abstract

Correlation studies of nighttime ionospheric scintillations at Ootacamund (Ooty. 3.4^ᵒN dip) at 327 M Hz using the Ooty radio telescope and a 13.5-m dish over a rather large east-west base line 3.2 km yielded the pattern drift speed ( ~80 m sec^-1 in the west-to-cast direction) and the scale size ( ~ 250 m) The measured drift speed and scale size are considered with respect to zenith angle of observations. The experimentally determined values of drift speed and scale size are compared with the ones deduced through power spectrum analysis of scintillation fading. The significance of the derived scale size relative to the separation of the receivers is discussed with regard to such drift-measurement techniques.