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Authors: Bilge, A. H.* 
Mizrahi, E.* 
Tulunay, Y.* 
Title: Variation of the feedback coefficient with R12 and the geographic latitude in 1-h ahead forecast of f0 F2
Issue Date: 2002
Series/Report no.: 1/45 (2002)
Keywords: forecast
critical frequency
Subject Classification01. Atmosphere::01.02. Ionosphere::01.02.03. Forecasts 
01. Atmosphere::01.02. Ionosphere::01.02.06. Instruments and techniques 
Abstract: The «prediction» and «forecast» of the critical frequency of the F 2 layer (f0 F2 ) is an important issue for frequency planning in short wave radio communications. In this context, «prediction» is used for the determination of monthly median values of f0 F2 for each hour, while «forecast» denotes the determination of hourly values. In a previous paper we proposed a «sliding window» technique for prediction combined with «feedback» for forecast (Bilge and Tulunay, 2000). In the present paper we obtain the variation of the feedback coefficient with R 12 and geographic latitude.
Appears in Collections:Annals of Geophysics

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