Sharko V. A Method for Determining Navigation Parameters of Moving Objects Using the Wave Front Emitted From the Satellite Navigation Systems

This thesis deals with the development of methods for determining navigation parameters of moving objects using the wavefront emitted by the global navigation satellite systems. It has been well documented that in certain situations related to the insufficient number of visible satellites, there has been a theoretical and practical possibility of determining additional parameters of the position of a moving vehicle, for which wave front data of the electromagnetic wave emitted from the operating satellite of the satellite radio navigation systems is measured. Model signals that include spatial features and used in the optimal and quasi-optimal algorithms of spatial processing have been developed. The environmental condition of the possibility to separate spatial processing from time processing applied to the existing global positioning systems (GPS or GLONASS) has been explored. The characteristics that describe the potential of spatial processing algorithms used for measuring navigation parameters, in particular, a standard error in the measurements in the presence of a radiation source, two or more radiation sources, one source of expected radiation and one or more sources of intentional interference radiation have been analyzed and explored. It has been demonstrated that if the number of satellites is more than one and less than the minimum necessary for the operation of the satellite navigation system, a systematic error is likely to be present in the measurements. The expression for determining said systematic error has been developed.