interessante la discussione sul forum linkato, anche se non sembra "dare certezze". In ognic aso ho capito cosa si può fare per decidere poi cosa attivare:
You can try (if you have patience and time - an hour) some easy to do tests to evaluate the errors for each combination.
Go to an "open sky" point. Wait 5 minutes for GPS stabilization (and an improved accuracy). Start an exercise (in the first combination: GPS only) in your watch and stay still in the same "open sky" point for 5-10 minutes (choose x minutes). Then stop the exercise in the watch and see the distance you "walked". You "walked" exactly the errors (in meters) for this snapshot of satellites configuration. Do the next test (for the other combinations: GPS+GLONASS and GPS+GALILEO) immediately - one after the other. In the wait (and still) time you can count the number of GPS, GLONASS and GALILEO available satellites with an app for your phone and correlate them with the errors. Do a top for the best solution you found (GPS vs GPS+GLONASS vs GPS+GALILEO).
Repeat the experiment in a "patched sky" situation (choose a point and look up for obstructed zones: under trees, near buildings, tunnels entries, under the bridges etc). Wait again 5 minutes for GPS stabilization. Start the exercise and stay still for the same x minutes. Repeat foe each combination. Do a top for the best solution you found (GPS vs GPS+GLONASS vs GPS+GALILEO).
Se ho tempo ci provo, nel mentre ho il glonass con gps attivato.
Grazie davvero!
