Performance of the precise point positioning method along with the development of GPS, GLONASS and Galileo systems
Damian Kiliszek, Krzysztof Kroszczyński
Abstract
This research shows how the performance of the Precise Point Positioning (PPP) changes with the development of GPS, GLONASS and Galileo systems. Calculations was performed over three different weeks, one from each year 2017, 2018 and 2019 for various constellations and various cut-off elevation angles. Based on the analysis, we prove indicate a progressive improvement of accuracy and a shorter convergence time in recent years. The best results were achieved for GPS + GLONASS + Galileo in 2019. The results shown that already in 2019 the Galileo system enabled to perform positioning with high accuracy anywhere on Earth and is constantly improving over the years. GPS still provides the highest accuracy and has the greatest impact on multi‑GNSS positioning accuracy. The results also show that even for the cut-off elevation angle of 40 degree, the use of GPS + GLONASS + Galileo enabled to obtain about 90 percent of the availability of solutions with a centimeter-level accuracy.