Software update 2.11.38 for S5/S9

Brad_Olwin

@Łukasz-Szmigiel I disagree as where I live BeiDou shows little to no improvement over GPS only. Gallileo does nothing for me except use more battery. I agree with @mountainChris, your location matters. I would not use as a general rule terrain to guide satellite choice. Try combinations where you normally exercise and you will find the best but…when you travel that might change.

nseslija

@clemens-renzl I tried it twice already, and it was bad… next time I will return to GPS only, and after that probably try BeiDou one more time… It is very possible that is location based…

dulko79

@isazi is for TP running pace mode running pod needed to have accurate pace or is gps good enough?

isazi

@dulko79 I used it with GPS for years.

Likarnik

Just tried BeiDou on morning run, track is better than same route on wednesday morning witg GPS only (before the update) but not significaly. The distance was also only 0.01km different. Can’t wait to try it on some trails I didn’t do anything special like waiting outside for couple of minutes, just laced my shoes outside insted inside, so maybe 30s. It got satelite fix quick.

Also battery consuption stays the same - atleast on start of activity it showed me 30h.

Rob33

@Dimitrios-Kanellopoulos I have a debate with users. Can you confirm that when using GPS + Beidou or GPS + Galiléo or + GPS + glonass for these 3 solutions,
the watch use the 2 systems simultaneously, for example [GPS + Beidou] to gain precision,
or choose the most efficient at a given time for example GPS or Beidou?

Dimitrios Kanellopoulos

@Rob33 From what I understand it does this:

2 Systems

System 1 GPS -> 10 satelites -> 4 have good signal / positioning
System 2 Beidou -> 10 satelites -> 5 have good signal / positioning

The watch will use 5+4 satelites (from both systems) to provide a location.

The watch doesn’t go SOLO on one one system and then on the other.

Rob33

@Dimitrios-Kanellopoulos Thank you for the answer.
So we should indeed be more precise with 2 coupled systems.

Łukasz Szmigiel · S9PP 2.37.48

@Brad_Olwin that’s interesting. Are you usually happy with GPS only precision and hence don’t see any significant improvements over two systems? Did you also try checking signal availability with mobile phone for example?

Łukasz Szmigiel · S9PP 2.37.48

@Dimitrios-Kanellopoulos do you know if watch requires a fix from each system independently? What happens if there are 6 GPS sats available but ie. Galileo drops to 2? Will watch ignore Galileo data in such circumstances?

Egika

Personal result after a few runs with GPS+Beidou:
No significant change. Track is sometimes good and sometimes worse. Like before with GPS only or GPS+Galileo.
Living in Northern Germany.

surfboomerang

My first test with the new firmware. I have to admit that I am not really impressed.

Blue: GPS
Green: GPS+GLONASS
Red: GPS+GALILEO
Purple: GPS+BEIDOU

Especially in tight corners it failed big time

Dimitrios Kanellopoulos

@Łukasz-Szmigiel

Let me help.

Imagine

Consider that all systems are fused into 1 and the chip selects the best satellites.
Each system has a different language “quircks” etc. So each system needs special treatment.
As said in one, after this treatment all are treated as the same. You can have GPS+BEIDOU and actually never connect to BEIDOU (or in a few cases) if their signal is not ok.

Where things get more haywire is when signal starts to drop.

As explained in 1, the watch will try to get the best SNR etc. Will that be Gali, Glo, GPS etc? It depends to the SNR etc they report.

I tried to make this simple and perhaps I have done some mistake or omitted something so please if anyone sees something wrong correct me.

Brad_Olwin

@Łukasz-Szmigiel said in Software update 2.11.38 for S5/S9:

@Brad_Olwin that’s interesting. Are you usually happy with GPS only precision and hence don’t see any significant improvements over two systems? Did you also try checking signal availability with mobile phone for example?

Yes, I have checked with an iPhone app. I am best covered by GPS, the others might help depending on the time of day but my results with GPS don’t show advantages with other satellite systems engaged.

Brad_Olwin

@Likarnik Be careful with battery consumption estimates. I believe this has been tweaked or fixed but what the watch reported for me was not what I observed with 2 satellite systems running. I have 2 S9s and will try testing this some and see if the battery reporting is accurate for GPS only vs. GPS + additional satellites. @Dimitrios-Kanellopoulos may know more than I do about this.

isazi

Went for my first running with GPS+Beidou, got an amazing track in Amsterdam. I was running with one watch only, so I don’t have anything to compare to, but looking at the satellite view the track is exactly where I was (maybe in a couple of spots went few meters on the side of where I was actually running, but that happened literally once or twice in one hour).

surfboomerang

@isazi I wish I could say the same. I went windsurfing today and recorded two tracks. One with GALILEO and one with GLONASS, Both are horrible. Huge speed wobbles and spikes.
I even think that today the watch recorded the worst tracks since I bought it one and a half year ago.

isazi

@surfboomerang I’ll be wearing two watches tomorrow for a long walk, let’s see how it goes.

@Dimitrios-Kanellopoulos Thanks. I think it also makes no sense to compare same route on different days with GPSonly and BEIDOU and compare. Differences could also come with GPSonly on both days due to different satellite situation (also within GPSonly) on different days… Right?

Dimitrios Kanellopoulos

@mountainChris yes. Even with wearing 2 same watches with same systems at the same hand