Any experience on that? Now I have a Garmin GLO + Samsung S3 Neo but isn't so accurate on the go kart. Often the accurancy is very bad and losts some laps each stint. Also with over 10/12 sats locked. Also when the time lap is ok, paths are completely wrong.
https://www.gsa.europa.eu/newsroom/news/world-s-first-dual-frequency-gnss-smartphone-hits-markethttps://medium.com/@sjbarbeau/dual-frequency-gnss-on-android-devices-152b8826e1c
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So, for automobilies it's ok, for kart is not so good, also with a perfect installation on the helmet. Tested!
This new chip is compatible with new GNSS systems (Galileo E1/E5a, GPS L5) and assures more precision (<1m) and stability.
But losing laps tells me you have some other problem, than just the inherent precision problem in GPS or GLONASS.
That said, I cannot wait for Galileo to improve the recorded positioning data. The system should be fully operational 2020, so I'm guessing we'll see consumer receivers for it soon. I'm guessing the external receivers will be better in Galileo too, as the integrated antennas on phones are never too good due to compact size and interference from other components.
GPS L5 and Galileo E5 are born for this: upper frequencies are strongest to interferencies.