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The method of measurement of Doppler frequency shift of ionospheric signal -HF Doppler technique - is one of well-known and widely used methods ofionosphere research. It allows to research various disturbances in theionosphere. There are some sources of disturbances in the ionosphere. These aregeomagnetic storms, solar flashes, metrological effects, atmospheric waves.This method allows to find out the influence of earthquakes, explosions andother processes on the ionosphere, which occur near to the Earth. HF Dopplertechnique has the high sensitivity to small frequency variations and the hightime resolution, but interpretation of results is difficult. In this work wemake an attempt to use GPS data for Doppler measurements interpretation.Modeling of Doppler frequency shift variations with use of TEC allows toseparate ionosphere disturbances of medium scale.

Use of GPS network data for HF Doppler measurements interpretation