From news "The satellite is scheduled to lift off Tuesday from Cape Canaveral, Florida, aboard a SpaceX Falcon 9 rocket. It's the first of 32 planned GPS III satellites that will replace older ones now in orbit. Lockheed Martin is building the new satellitesoutside Denver".
Will this benefit us?
One of the reasons for the new gen GPS sats is to combat the aggressive jamming being used on the current system. In the middle east and northern European countries localised jammers are being used to disrupt the GNSS signal. Somehow I doubt the USAF is going to allow us access to their GPS3 birds ultraprecise L3 systems to measure our speeds, the low level L1 that we use will still be available. There are ways to overcome the jamming, my son has been testing them in the Gorge. The other benefit that became available this year in the USA is the ability for phones to use all GPS systems to establish a position, up until a few months ago the FCC only allowed the GNSS to be used.
Yes, we will benefit massively from this. Mostly after 2022. Current consumer devices are ready for L1C. Incoming consumer devices (say 2020, nothing's really ready yet) will be able to remove the ionospheric delay error by comparing L1C and L2C.
Select to expand quoteJulienLe said..
Yes, we will benefit massively from this. Mostly after 2022. Current consumer devices are ready for L1C. Incoming consumer devices (say 2020, nothing's really ready yet) will be able to remove the ionospheric delay error by comparing L1C and L2C.
Can you provide more detail - as it reads like you have intimate knowledge of upcoming devices ?
Select to expand quoteRoo said..
The other benefit that became available this year in the USA is the ability for phones to use all GPS systems to establish a position, up until a few months ago the FCC only allowed the GNSS to be used.
I assume this is a typo? and should read "the FCC only allowed the GPS to be used"?
If that is so, I wonder if Aussie phones are/were similarly restricted?
Select to expand quotemathew said..
Can you provide more detail - as it reads like you have intimate knowledge of upcoming devices ?
I found this Mat: en.wikipedia.org/wiki/GPS_Block_IIIA#New_navigation_signals
The ability to use this signal and improve positioning accuracy will probably mean new hardware and may not help with Doppler speed at all. The most likely improvement will be the accuracy of Alphas.(Proximity circle uses Positional data and is currently the greatest source of portential error).
Hello mathew, there are regular press releases and roadmaps from GNSS organisations and from receiver manufacturers. Consumer receivers are currently at a bit of a standstill as multiple companies rushed to introduce "centimeter accuracy through multiband (not multi GNSS)" a few years ago but nothing valid/interesting emerged yet. Give it two more years.
L1C will be a given to any recent device when enabled.
L2C will require one more antenna, one more RF path, new software.
And this is only GPS. There's plenty to come. But then again, it's a slow process.
Decimeter accuracy coming to Android phones 
Maybe, but not quite yet:
medium.com/@sjbarbeau/dual-frequency-gnss-on-android-devices-152b8826e1c
Yes, this is the current issue. They all rushed to be the first next-gen consumer level part and at the end of the day, nothing is useful yet. For various reasons. It will happen, it just needs time and a few revisions.
The craze in advertising from receiver manufacturers and smartphone manufacturers kinda died down as of late as, I guess, everybody realized it wasn't that ready for prime time yet.
Some receivers have been downgraded from multiple bands used together to multiple bands used a single at a time, some have erratas as long as books, some have been scraped from the roadmaps, some have been in qualifying samples for a year, some have insane power consumption. We'll see. Exciting times to come anyway but two more years of wait seems sound to me.
