Physics
Scientific paper
Jun 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ge%26ae..49..368g&link_type=abstract
Geomagnetism and Aeronomy, Volume 49, Issue 3, pp.368-373
Physics
94.20.Cf, 94.20.Bb
Scientific paper
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.
Golygin V. A.
Sazhin V. I.
Unuchkov V. E.
Vdovin E. M.
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