Abstract
This article discusses the results of the measurements of position accuracy in 3D space for a UAV object using real-time kinematic measurements of the GPS system. The aim of the research presented in the work was to determine all three components (x, y, z) describing the location of the UAV object during the flight and making comparative characteristics using the PPS navigation service. Comparison of the differences between the two methods showed that the obtained results are characterized by a 95% of certainty. The results obtained in this experiment showed the accuracy of height measurement using the PPS GNSS system at a level of 10-80 centimeters. The results of this study also indicate that kinematic measurements can be very useful in the work of the air traffic controller and engineers of other specialties involved in position determination using satellite techniques. The article also presents a mathematical model defining the process of determining the position of a UAV object during the flight, taking into account kinematic measurements. In the final part of the work, practical conclusions were presented based on the analysis and selected simulation tests.
Highlights
In the introductory part of this work, the authors focused on making a critical analysis of the subject of research, i.e. the problems, determining the accuracy of kinematic objects, based on the precise positioning of PPP (Precise Point Positioning)
Precise IGS (International GNSS Service) orbits were used with a sampling rate of 15 [min] and IGS satellite clocks with an interval of 30 [s] were used for estimation, where the term GNSS means global navigation satellite system (Global Navigation Satellite System) [1]
It should be noted that the accuracy of determining the position of a given object in three-dimensional space depends on many factors, but mainly on the quality of the receiver itself and the number of radio channels operating the reception and processing of navigation signals of the GPS/GNSS system, antenna and the conditions of the measurement itself
Summary
In the introductory part of this work, the authors focused on making a critical analysis of the subject of research, i.e. the problems, determining the accuracy of kinematic objects (aircraft, UAV), based on the precise positioning of PPP (Precise Point Positioning). In 2002 Shen and Gao published an article, in which they described the kinematic solution of PPP technique for 6 Canadian active control stations. In this aspect, the observational data were tested using two-phase receivers with a sampling frequency of 1 [s] and another convergence time of 6-8 [h]. The observational data were tested using two-phase receivers with a sampling frequency of 1 [s] and another convergence time of 6-8 [h] For this purpose, precise IGS (International GNSS Service) orbits were used with a sampling rate of 15 [min] and IGS satellite clocks with an interval of 30 [s] were used for estimation, where the term GNSS means global navigation satellite system (Global Navigation Satellite System) [1]. Estimated mean square RMS (Root Mean Square) for static PPP information solutions, inside the preamble with corrections provided by geostationary systems, where these stations are shown 10 [cm] in the horizontal direction and 12 [cm] in the height direction [2]
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