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Doppler frequency shifts of radio waves reflected by parabolic and quasi-parabolic ionospheric layers

Authors
Journal
Journal of Atmospheric and Terrestrial Physics
0021-9169
Publisher
Elsevier
Publication Date
Volume
44
Issue
4
Identifiers
DOI: 10.1016/0021-9169(82)90075-7

Abstract

Abstract Consideration is given to Doppler frequency shifts calculated for parabolic and quasi-parabolic models of the ionosphere. The analytical formulae obtained are used to study the Doppler frequency shift for the case of variations in total electron content. It has been shown that, if the operating frequencies are much below the maximum usable frequency (MUF), the Doppler shifts calculated in terms of the quasi-parabolic model can be satisfactorily described using formulae for an equivalent plane reflector. Special attention is paid to the study of the behaviour of frequency shifts on ray paths near the penetration angle and near the MUF.

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