The obtained results confirm that the Galileo solution has comparable accuracy to the GPS solution. Also, with the Galileo solution, the best results were obtained for functions with a smaller dependence on the elevation angle than for GPS, since Galileo observations at lower elevation angles have better performance than GPS observations.

The results show that the correct proportion of BDS/GPS/Galileo broadcast ionospheric models is generally above 60 %, RMS is less than 2.0 m, and the correction accuracy of BDS broadcast ionospheric models in China is better than GPS and Galileo with proportion of more than 75 %. Moreover, the GPS/Galileo combined PPP with CSC using the IR scheme performs better than the GPS-only counterpart, which clearly demonstrates the benefit of multi-GNSS observations to the CSC. 1-Hz data were also used to test the CSC procedure; however, successful CSC still relies mostly on the availability of real-time precise external The MDEV of σ mod,y (τ) = 10 −13 at τ = 50 s for the PHM on E11 and E12 is an order of magnitude better than most GLONASS and GPS Group B and Group C satellites. The PHM on E19 shows a somewhat different stability profile relative to the other two Galileo satellites, which may have been associated with multiple signal outages in early 2014
The accuracy is an advantage of GLONASS with up-to 2 meter of accuracy. GPS + GLONASS allows your device to be pin pointed by a group of 55 satellites all across the globe. So when you are in a place where GPS signals are stuck like between huge buildings or subways, you will be tracked by GLONASS satellites accurately.
Though the number of observed Galileo satellites is less than GPS, the horizontal accuracy can reach 1.6 mm/2.3 mm/5.7 mm on North/East/Up component, which is improved by 59.0% and 12.3% compared
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is galileo better than gps