Making regular GPS ultra-precise
norwegianscitechnews.com
Making regular GPS ultra-precise
1–10 of 68 posts
Re: Making regular GPS ultra-precise
#2Another option to get more precise positioning is to switch from GPS to Galileo.
Galileo generally offers better civilian accuracy than GPS because it uses modern signal structures with better resistance to multipath and interference and provides dual-frequency signals (E1 + E5) to all users, which mitigates ionospheric errors.
Re: Making regular GPS ultra-precise
#3Why don’t cities have ground beacons for this?
Much cheaper than satellites and would be guaranteed to see heavy use
Re: Making regular GPS ultra-precise
#4Another option to get more precise positioning is to switch from GPS to Galileo. Galileo generally offers better civilian accuracy than GPS because it uses modern signal structures with better resistance to multipath and interference and provides dual-frequency signals (E1 + E5) to all users, which mitigates ionospheric errors.
most software now uses multiple GNSS at the same time?
Re: Making regular GPS ultra-precise
#5Another option to get more precise positioning is to switch from GPS to Galileo. Galileo generally offers better civilian accuracy than GPS because it uses modern signal structures with better resistance to multipath and interference and provides dual-frequency signals (E1 + E5) to all users, which mitigates ionospheric errors.
most software now uses multiple GNSS at the same time?
Yeah, according to the 'GPS Test' Android app my phone is picking up and using GNSS signals from GPS, Galileo, GLOSNAS, and Beidou sats.
Re: Making regular GPS ultra-precise
#6Nothing in this article is new, and the problem with RTK has always been the (unpaid) availability of reference stations. Good on them for trying to make a package of it, but maybe this "news" site could've used a bit less unchecked enthusiasm.
Also, RTK is the opposite of "regular" GPS, it's generally considered a "special" usage mode of GPS.
And discussing urban canyons with no mention of QZSS?
Re: Making regular GPS ultra-precise
#7Why don’t cities have ground beacons for this? Much cheaper than satellites and would be guaranteed to see heavy use
That's kinda what RTK does, you have a ground station and transfer correction data for the visible satellites from it to your GNSS receiver. It doesn't transmit a GNSS signal itself but functionally the effect is vaguely comparable to a "satellite on the ground", without interfering on the actual signals.
Re: Making regular GPS ultra-precise
#8Don't cars also measure their wheel movements to increase location accuracy?
Re: Making regular GPS ultra-precise
#9Don't cars also measure their wheel movements to increase location accuracy?
Almost, they use accelerometers and gyros, 'dead reckoning' is the keyword to look for. The wheels are a bit unreliable because the diameter changes slightly with pressure and temperature.
Re: Making regular GPS ultra-precise
#10Don't cars also measure their wheel movements to increase location accuracy?
Almost, they use accelerometers and gyros, 'dead reckoning' is the keyword to look for. The wheels are a bit unreliable because the diameter changes slightly with pressure and temperature.
Wheels are still used for legal telemetry: speedometer and odometer.