Recovery of the Spatial State of the Ionosphere Using Regular Definitions of the TEC Identifier at the Network of Continuously Operating GNSS Stations of Ukraine

Abstract

We developed a system for monitoring the ionospher, which uses the GNSS located in the western part of Ukraine. The system is based on determining the ionosphere parameters from GNSS observations performed at an idividual station. We are proposed algorithm for restoring the spasial position of the ionosphtric state or its ionization field according to the regular definition of the TEC parameter. The description below shows jne of one of the possible solution that are based on the application of the regularized approximation of functions with numerous variables.To experimentally determine the changes in the ionization field in time, we took measusurements from 272 days in 2013 that were determined during the GNSS observations at 17 continuously operating stations of the ZAKPOS network. The resulting error indicators show that the developed algorithm gives consistent results for ionization field restoration that do not depend on the ionosphere state, satellites positions changes in namber of stations in the network used for computations.