A method to determine exact wave parameters of TID

Total electron content measurements by using dual-frequency signals of global navigation satellite systems (GNSS) makes it possible to obtain the distribution density ionosphere with high spatial and temporal resolution. Such resolution allows explore small-scale traveling ionospheric disturbances generated terrestrial geophysical events, including seismic activity, solar terminator passage, atmospheric cyclones. One features measuring total GNSS is that are made at line intersection satellite-receiver beam layer maximum ionization height ≈ 300 km. At same time, due orbital motion satellites Earth rotation, points which providing carrying out a movement relative each other, disturbances. measurement causes occurrence Doppler effect leads distortion wave parameters variations. In particular, determination period on basis time series large distortions depending used satellite, coordinates receiver. This paper describes method for determining exact –frequency, wavelength, propagation velocity disturbances, based use godochrones analyze TEC The difference between measured proposed from data shown an example passage terminator.