Yakovchenko O. Development of the methods for high precision determination of the motion parameters of Low Earth Orbit satellites based on the on-board observations of global navigation satellite systems signals

The object is the technologies and processes of processing code and phase GNSS observations. The goal is to create, research and experimentally test methods, algorithms and procedures for high-precision determination of the parameters of the movement of low earth orbit satellite and positioning of near-Earth objects with centimeter/decimeter accuracy in autonomous (non-differential) PPP mode based on on-board two-frequency phase and code observation of GNSS signals. The methods is the theory of satellite radio navigation systems, statistical theory of measuring radio systems, methods of mathematical analysis, theory of matrices, methods of mathematical modeling. Results - the problem of high-precision determination of the parameters of the low earth orbit satellite movement based on on-board observations of GNSS signals has been solved by improving known and creating new methods and algorithms for processing phase and code GNSS observations in the PPP mode, which allows for the positioning of low earth orbit satellite and near-Earth objects at the centimeter level of accuracy. Scope is the precise positioning and navigation.