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iPhone 14 Pro comes with dual-frequency GPS

apple.com

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Re: iPhone 14 Pro comes with dual-frequency GPS

#11

Post by coder543 »

ricardobeat wrote: post #5

Support for Galileo and Glonass was touted maybe a decade ago, but there was never any massive improvement in accuracy. Same story? Even worse, Apple Maps still freezes after I leave a tunnel - I’ve been through at least 3 different models in the meantime.

> Support for Galileo and Glonass was touted maybe a decade ago, but there was never any massive improvement in accuracy. Same story?

Why don't you supply a source to go along with your bold claim? Instead, here is the first set of test results I found on google: https://rxnetworks.com/press-releases/test-confirms-that-gal...

It shows that using more than just GPS substantially improved accuracy in challenging environments. Dual frequency GPS should show strong improvements too.

Re: iPhone 14 Pro comes with dual-frequency GPS

#12

Post by simonjgreen »

ricardobeat wrote: post #5

Support for Galileo and Glonass was touted maybe a decade ago, but there was never any massive improvement in accuracy. Same story? Even worse, Apple Maps still freezes after I leave a tunnel - I’ve been through at least 3 different models in the meantime.

I for one absolutely recall "classic" GNSS based purely on GPS. The combination of only having GPS, early slow hardware with only cold starts, young software implementations, made for quite a ropey experience.

I think my first proper experience was a PCMCIA GPS card in an HP IPaq running TomTom 2, or possibly some Garmin version. Revolutionary at the time, and brilliant on long journeys, but compared to today it was awful.

Re: iPhone 14 Pro comes with dual-frequency GPS

#14

Post by toomuchtodo »

yababa_y wrote: post #10
Forge36 wrote: post #2

For those of us not deep into the technical details here: what's this mean?

The short of it is that for the past two decade or so the us govt has been rolling out a new signal that the latest series of GPS satellites transmit that uses 1. more bandwidth, 2. more transmit power, 3. in a protected region of spectrum, 4. using modern encodings and error correction. This makes it a lot easier to pick up the signal from noisy environments.

Are there any specific use cases where this will see outside benefit (urban areas)? Or is it just faster fix and higher precision without PPS/RTK?

Re: iPhone 14 Pro comes with dual-frequency GPS

#16

Post by tiernano »

toomuchtodo wrote: post #14
yababa_y wrote: post #10

Earlier quoted context omitted.

The short of it is that for the past two decade or so the us govt has been rolling out a new signal that the latest series of GPS satellites transmit that uses 1. more bandwidth, 2. more transmit power, 3. in a protected region of spectrum, 4. using modern encodings and error correction. This makes it a lot easier to pick up the signal from noisy environments.

Are there any specific use cases where this will see outside benefit (urban areas)? Or is it just faster fix and higher precision without PPS/RTK?

based on the keynote, they say it will be better in "urban jungles". It was part of the Apple Watch Ultra and said it worked better for the Boston (IIRC) Maraton. I would hope for the phone it works better for navagation in Car Play... I dont know how many times my phone things, when driving forward, that im turning down a side road...

Re: iPhone 14 Pro comes with dual-frequency GPS

#18

Post by anotherOneSound »

toomuchtodo wrote: post #14
yababa_y wrote: post #10

Earlier quoted context omitted.

The short of it is that for the past two decade or so the us govt has been rolling out a new signal that the latest series of GPS satellites transmit that uses 1. more bandwidth, 2. more transmit power, 3. in a protected region of spectrum, 4. using modern encodings and error correction. This makes it a lot easier to pick up the signal from noisy environments.

Are there any specific use cases where this will see outside benefit (urban areas)? Or is it just faster fix and higher precision without PPS/RTK?

inside of the mall when your weather widget pulls your location every 5 minutes they will better know what stores you went in to in what order

Re: iPhone 14 Pro comes with dual-frequency GPS

#19

Post by scarface74 »

tiernano wrote: post #17
tosh wrote: post #4

afaiu this also means that every non-Ultra Apple watch will benefit from dual-frequency GPS when paired with an iPhone 14

I though the Apple Watch had its own GPS and used that for signal?

It does have it’s own GPS. But if it tethered with your phone, it uses that instead to save battery life. The same is true for cellular Apple Watches.

Re: iPhone 14 Pro comes with dual-frequency GPS

#20

Post by GekkePrutser »

coder543 wrote: post #11
ricardobeat wrote: post #5

Support for Galileo and Glonass was touted maybe a decade ago, but there was never any massive improvement in accuracy. Same story? Even worse, Apple Maps still freezes after I leave a tunnel - I’ve been through at least 3 different models in the meantime.

> Support for Galileo and Glonass was touted maybe a decade ago, but there was never any massive improvement in accuracy. Same story? Why don't you supply a source to go along with your bold claim? Instead, here is the first set of test results I found on google: https://rxnetworks.com/press-releases/test-confirms-that-gal... It shows that using more than just GPS substantially improved accuracy in challenging enviro…

> Dual frequency GPS should show strong improvements too.

It does. Reviews of Garmin's GPSMap 66sr which was the first one with dual band, are really good. Especially in tough tracking situations.

Time to First Fix is also better.

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