Abstract
The accuracy in determining the maximum usable frequencies (MUF) of reference radio links has been estimated. A method for using the data on MUF, obtained at two-hop reference radio links, in order to specify the horizontal gradients of electron concentration in the ionosphere has been proposed. The results of the observations at a system of two reference radio links are used to assess the efficiency of such a specification. It has been indicated that the developed method makes it possible to specify the values of the ionospheric critical frequency simultaneously in two radio link regions. The application of two-hop radio links together with one-hop lines substantially broadens the number of reference radio stations that can be used to adapt the parameters of the average monthly ionospheric model to the current conditions.
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Original Russian Text © V.A. Golygin, E.M. Vdovin, V.I. Sazhin, V.E. Unuchkov, 2009, published in Geomagnetizm i Aeronomiya, 2009, Vol. 49, No. 3, pp. 387–392.
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Golygin, V.A., Vdovin, E.M., Sazhin, V.I. et al. Adaptation of the average monthly ionospheric model to current conditions using the data on maximum usable frequencies at two-hop reference radio links. Geomagn. Aeron. 49, 368–373 (2009). https://doi.org/10.1134/S0016793209030104
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DOI: https://doi.org/10.1134/S0016793209030104