About the correlation between the values of the VTEC ionosphere parameter on GNSS stations of Ukraine

Abstract

Obtaining information about the spatial distribution of electronic concentration is a complicated task, since the highrise distribution profiles of the TEC parameter vary both in time and in longitude and latitude, and depend on the magnetic and solar activity. In this regard, it is relevant to study the characteristic quantitative parameters describing the dynamics of ionization of the atmosphere. The purpose of this work is to study the parameter of the ionosphere VTEC, namely the study of correlation links between this parameter at different GNSS stations, the distance between them ranges from 100 to 400 km. To solve this problem, ionfiles were first processed with VTEC parameter values ??at different stations, and their filtration was performed with the help of the Kalman filter. Next, the correlation coefficients between the values ??of the VTEC parameter are found pairwise for all GNSS stations under investigation. The analytical connection between the coefficient of correlation of VTEC parameters and the distance between GNSS stations is proposed. The obtained results allow to simulate variations and dynamics of changes in the concentration of electrons in space.