Influence de la hauteur hmf2 sur la fréquence critique des ondes radio à l’aide du modèle IRI 2016

Abstract

Ionospheric plasma has the property of refracting or reflecting radio waves depending on theire frequency
for the F2 layer. This reflective layer priority of the ionosphere is used in telecommunications for the
transmission of radio waves .Approach models of the ionosphere have been developed for in-depth study
of the ionodphere .some models make it possible to reproduce the characteristics of the ionosphere . In
this work,a study of the variability of hmF2 and foF2 height in the ionosphere is presented using the IRI
(International Reference Ionosphere) model . The IRI model in its 2016 version is used to study the
ionospheric layer .The study focuses on the influence of the the height hmF2 on the critical frequency of
the radio waves of the foF2 sublayer at the Ouagadougou station during the maximum phase and
minimum phase of the solar cycle 22 .The objective of this work is to study is to study the effect of the
height hmF2 on the critical frequency foF2 .finally the study shows that the critical frequency foF2
follows the variation of the height hmF2 of the layer F2 as well at the level of the maximum as at the
minimum of the phase of the solar cycle 22.