Application of satellite systems GLONASS/GPS at adaptation ionospheric model

The paper discusses different methods of continuous monitoring of the state of the ionospheric plasma. It is shown that, despite the merits of the approach used, the current shortcomings limit their practical application. The analysis of the various options prediction of ionospheric parameters is conducted. It is possible to substantiate the choice of a model that meets the requirements of simplicity and high speed calculations necessary for further research. An example of the construction of electron density profile using the selected experimental model NeQuick is given. Reasonability of using as adapting the model parameters values of the solar radio emission at a wavelength of 10.7 cm, which characterizes the level of solar activity is shown. The way of evaluation index using data from global navigation satellite systems GLONASS/GPS is given. It includes smoothing the measurements for each satellite, the formation of correlation matrices of data and minimizing the functional defined by the deviation from the true values of the model. The effectiveness of the methods of continuous monitoring of the state of the ionospheric plasma was evaluated by carrying out experimental work on the range of "ONIIP" Omsk. On the basis of the obtained data the main advantages of the proposed method are shown. In determining the critical frequency of the F2 layer at points distant from the scope of the satellites in the distance of 700 to 1300 km: the best description of the nature of the parameter depending on the time and, consequently, improving the accuracy of determination is given.