Kutsenko O. Aircraft differential navigation methods using global navigation satellite systems signals

The dissertation is devoted to the solution of the actual scientific and technical problem: aircraft differential navigation methods development with the use of global navigation satellite systems signals. That is important for increasing the safety of flights. The aim of the dissertation is the develop and experimentally study new and improved methods of aircraft differential navigation with the use multi-GNSS signals for performing operations: a maneuver in the aerodrome area, landing approach with vertical guidance and categorical. The dissertation analyzes the documents of leading organizations and scientific publications in the aviation and space industries. According to these data, it can be argued that air transport plays a leading role in ensuring the sustainability of economic and social development. A key element that ensures the efficiency and reliability of air transport operations is air navigation support, in particular its radio navigation component. Special attention is paid to the development of satellite landing systems. The ICAO classification of landing approaches is considered, and the analysis of existing categorical systems of instrumental landing is presented. A requirements description for the satellite landing system is provided. The analysis showed that the actual scientific task is aircraft differential navigation methods development with the use of global navigation satellite systems signals, which is important for improving flight safety. In the dissertation, the final approach segment and the local Cartesian coordinate system XYV connected with the runway are considered. The errors arising in the instrumental aircraft landing system with the use of several satellite systems signals are considered. Presented existing and developed models that reduce the impact of these errors. In particular, the developed model of residual tropospheric delay after the differential correction of the pseudorange. A key feature of which is the possibility of application in case of meteorological data absence. Given a model of pseudorange and pseudorate correction witch calculated from data obtained from several ground-based receivers, and transmit to the landing system onboard subsystem. The dissertation presents existing and developed methods for detecting failures in the landing system ground subsystem, determining the contribution of the ground subsystem to the error of the corrected pseudorange, estimating the accuracy and integrity of coordinate determination in a kinematic mode for different combinations of satellite systems. The dissertation describes the developed hardware and software complex that implements created methods and models and allows navigation solution accuracy and integrity hardware in the loop simulation research, for performing operations: a maneuver in the aerodrome area, landing approach with vertical guidance and categorical, using different signals combinations from satellite systems: GPS, GLONASS, GALILEO and BeiDou. Presented flight test results of the developed hardware and software complex. The experimental flight has a linear trajectory that simulates the landing final approach segment and the flight over the runway. According to the test results, the following data were obtained: ground subsystem contribution estimation to the pseudorange error during the experiment; for satellite navigation system during the planned operation: maneuver in the aerodrome area, landing approach with vertical guidance and categorical using different signals combinations from satellite systems: GPS, GLONASS, GALILEO and BeiDou, navigation system error ellipsoids and the percentage false system capacity and false system incapacity were obtained.