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Simplified ionospheric regional model for telecommunication applications
Author(s) -
Zolesi Bruno,
Cander Ljiljana R.,
De Franceschi Giorgiana
Publication year - 1993
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/93rs00276
Subject(s) - ionosphere , latitude , meteorology , position (finance) , solar cycle , function (biology) , environmental science , geodesy , atmospheric sciences , geography , physics , geophysics , solar wind , finance , quantum mechanics , evolutionary biology , magnetic field , economics , biology
A simplified model of the key ionospheric characteristics of vertical incidence such as f o F 2 M (3000) F 2 , h ′ F , f o F 1 , and f 0 E that are used for prediction of operational parameters of HF telecommunication systems in a restricted area has been developed. The simplified ionospheric regional model (SIRM), is based upon the Fourier analysis of the monthly median values of these characteristics from seven ionospheric stations in Europe. It is shown that only 12 dominant Fourier coefficients, expressed as a function of local time (LT), solar activity and geographic latitude are sufficient to reproduce the main features of the diurnal, seasonal, and solar cycle behavior of the mid‐latitude ionosphere under median conditions. The model is in a very suitable form for digital computer calculation of the characteristics for a given position, instant of time, and solar activity.