Connected GPS feature SF3/Galileo supported smartphones

Dimitrios Kanellopoulos · 5 Apr 2018, 19:42

Also the correct term is ascent. Elevation is altitude. You can say elevation gain for example or altitude gain or ascent.

Luís Pinto · 4 May 2018, 20:12

@dimitrios-kanellopoulos In this case we cannot make that extrapolation, because Suunto app in smartphone will get information from 3 or 4 systems. We don’t know which satellites device use in certain activity. Unfortunately we cannot select on iOS or Android what system to be on/off.

jthomi · 5 Apr 2018, 20:14

I also think watch looks better, you can see the track points, App has 2317 points and the watch 11684, guess that why its more accurate.

And I guess nobody here would make a problem out of it. I think even if watch looks better, they seem pretty similar, don’t they…

@dimitrios-kanellopoulos said in Connected GPS feature SF3/Galileo supported smartphones:

Watch looks better. At the moment Galileo from.my tests does not give more than 4% improvement. Tested on Android and the test gps apps that support Galileo.

Dimitrios Kanellopoulos · 5 Apr 2018, 20:14

@luís-pinto said in Connected GPS feature SF3/Galileo supported smartphones:

@dimitrios-kanellopoulos In this case we cannot make that extrapolation, because Suunto app in smartphone will get information from 3 or 4 systems. We don’t know which satellites device use in certain activity. Unfortunately we cannot select on iOS or Android what system to be on/off.

Afaik they use the system service. I can ask for you.

Luís Pinto · 5 Apr 2018, 20:16

@dimitrios-kanellopoulos If we can have access to information of native file maybe is possible to get that information (each satellite have one id). But in smartphones i really don’t know.

jthomi · 5 Apr 2018, 20:17

@luís-pinto We should need the raw data then?

Luís Pinto · 5 Apr 2018, 20:17

@jthomi i’m affraid yes.

jthomi · 5 Apr 2018, 20:42

I think the target market for the SF3 will be fine with the accuracy of the tracking. If you look really closely to the two tracks, sometimes watch is better, and sometimes the app. And some parts of the route both are way off, guess the way the data is displayed on the maps is a source of error itself.

Dimitrios Kanellopoulos · 5 Apr 2018, 20:44

@luís-pinto said in Connected GPS feature SF3/Galileo supported smartphones:

@dimitrios-kanellopoulos If we can have access to information of native file maybe is possible to get that information (each satellite have one id). But in smartphones i really don’t know.

I can do that for you.

jthomi · 5 Apr 2018, 20:57

So, shall I give it another try tomorrow?

Luís Pinto · 4 May 2018, 21:30

@jthomi And one important fact. All smartphones will have same performance? And OS can role a variable for results? What about antenna design in each phone? At this time i have many questions. We need several tests, several brand phones, different ambients. One variable we can’t domain. The choose of a GNSS system in phone. It’s not possible. In iOS i’m sure there isn’t.

Luís Pinto · 4 May 2018, 21:36

There are no doubts. Suunto app will get the management that the operating system allows. I don’t think developers can improve that. Is suppose that we will have very variable results depending to the phone. For occasional registrations with SF3 the quality will be reasonable for most of users.

Luís Pinto · 5 Apr 2018, 21:34

@dimitrios-kanellopoulos That would be very valuable!

NicolasP · 5 Apr 2018, 21:37

@luís-pinto don’t forget that phones can use not only satellites but as well the mobile network for better accuracy. So it’s even more difficult to know what has been really used to record the track. Maybe a combination?

Luís Pinto · 5 Apr 2018, 21:40

@nicolasp Well mentioned! I had forgotten that reality.

Luís Pinto · 6 Apr 2018, 08:59

@nicolasp By the way i found this in one app for iPhone (iSmoothRun):

“GPS Quality
A few words on GPS signal quality and accuracy. GPS accuracy is not controlled by the app (or any app) but by the device. Apps only define what are the accuracy requirements for the specific use. We run the iPhone GPS unit always on maximum accuracy mode (it doesn’t have much impact on the battery). Any app would give exactly the same results (you can run two apps in parallel to check). We usually give better results than other apps, when there is no GPS signal and other apps give positions from WiFi spots or cell towers, while we switch to pedometer till we get a satellite fix again.”

Dimitrios Kanellopoulos · 6 Apr 2018, 09:04

I asked and the developers replied that the best mode for accuracy is asked and they do not ask for a specific location provider which means that it will use what the phone is capable of.

jthomi · 6 Apr 2018, 15:28

Another test from today’s tour:

http://www.mygpsfiles.com/app/#Ai1QGGkJ

Again with iPhone7 SuuntoApp tracking in comparison to tracking with the Suunto Spartan Sport.

Luís Pinto · 4 Jun 2018, 15:41

@jthomi Thank you again! What you done its appreciated. Same conclusion, line of watch seems more accurate. One thing that i didn’t understand, did you use in watch Navstar+Glonass ou just one?

There is a limitation on system for smartphones. We never can select in which system we want to make a registry. This is of course a real problem to compare. If we get satellites with types of different precision, how a OS make a read? From average?

Even by now it’s not possible in watches for example select Glonass alone.

Anyone with another smartphone brand?

jthomi · 6 Apr 2018, 15:50

Honestly I totally forgot that I can switch on Glonass. Guess I have to make another round then…but not today…

@luís-pinto said in Connected GPS feature SF3/Galileo supported smartphones:

@jthomi Thank you again! What you done its appreciated. Same conclusion, line of watch seems more accurate. One thing that i didn’t understand, did you use in watch Navstar+Glonass ou just one?