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Subterranean outdoor activities with Galileo

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  • Ł Offline
    Łukasz Szmigiel
    last edited by 28 Jul 2021, 19:12

    There used to be a bug - a long time ago (fixed in some of the firmware updates) - that made a sudden drop (or rise, I can’t remember) in altitude on the start of the activity when using Galileo. I’ve been observing similar behavior for some time and was wondering if it’s firmware related or maybe there were some internal changes to GNSS itself?

    For example, I’ve started today’s run, according to SA at -36m and quickly (around 60s) went to nominal ~120m. What’s interesting - the track was acceptable - pretty typical for first few minutes, with some deviations but nothing bad like being 100m off the actual location.

    Apart from the start, the track was top notch, no signal losses or weird deviations.

    So I got an ascent of 162m when it should be around 10m.

    Screenshot_20210728-210636.png

    Screenshot_20210728-210718.png

    S9PP 2.40.44

    D 1 Reply Last reply 28 Jul 2021, 19:16 Reply Quote 0
    • D Offline
      DMytro @Łukasz Szmigiel
      last edited by 28 Jul 2021, 19:16

      @łukasz-szmigiel oh, I didn’t know it might be Galileo related. I get it almost every time of I start workout directly after arrow turns green, if you give it few more seconds it should be fine though.

      Ł 1 Reply Last reply 28 Jul 2021, 19:26 Reply Quote 0
      • Ł Offline
        Łukasz Szmigiel @DMytro
        last edited by 28 Jul 2021, 19:26

        @dmytro I usually wait a little longer or start running without actually starting the workout and it’s mostly OK but it goes bonkers from time to time (like today). I thought that this problem was sorted out but maybe not?

        S9PP 2.40.44

        D 1 Reply Last reply 28 Jul 2021, 19:45 Reply Quote 0
        • D Offline
          DMytro @Łukasz Szmigiel
          last edited by 28 Jul 2021, 19:45

          @łukasz-szmigiel I didn’t thought of it as a problem tbh. It’s just that GPS needs time to settle and the arrow turns green not when the signal is great but when it’s good enough.

          Ł 1 Reply Last reply 28 Jul 2021, 19:57 Reply Quote 0
          • Ł Offline
            Łukasz Szmigiel @DMytro
            last edited by 28 Jul 2021, 19:57

            @dmytro yeah it might be a matter of how it’s tuned in to show that the signal is good enough (and it doesn’t care about VDOP) but I haven’t seen it with other GNSS which is strange. Or maybe I’m not using other GNSS often enough to notice?

            S9PP 2.40.44

            T D 2 Replies Last reply 28 Jul 2021, 20:06 Reply Quote 0
            • T Offline
              Tomas5 @Łukasz Szmigiel
              last edited by Tomas5 28 Jul 2021, 20:06

              @łukasz-szmigiel i don’t have problem with altitude at all or at least i didn’t notice. For example from last bike. But i every time wait for GPS signal befor starting excercise. And it took usually longer. Around 20-30 seconds sometimes less or more. Maybe you just need to wait few seconds more before starting excercise.
              F1CB55B6-D649-4B8B-B131-44CF49340D00.jpeg
              And latest hike:
              17DEB04C-3724-41E5-8E89-F0BBF877BD52.jpeg

              1 Reply Last reply Reply Quote 1
              • D Offline
                DMytro @Łukasz Szmigiel
                last edited by 28 Jul 2021, 20:38

                @łukasz-szmigiel I use Galileo and it’s there every time I rush the wait. I’ll try other combinations out of interest.

                T 1 Reply Last reply 28 Jul 2021, 20:47 Reply Quote 0
                • T Offline
                  Tomas5 @DMytro
                  last edited by 28 Jul 2021, 20:47

                  @dmytro i use galileo too.

                  1 Reply Last reply Reply Quote 0
                  • Ł Offline
                    Łukasz Szmigiel
                    last edited by 14 Apr 2022, 18:34

                    Just a friendly reminder that a gigantic drop of altitude at the beginning of the activity is still there, mostly when using two GNSS, oftentimes Galileo. This is very frustrating, especially now when we have a brand new ascent / descent algorithm. Any chances it’s going to get fixed?

                    S9PP 2.40.44

                    T 1 Reply Last reply 14 Apr 2022, 19:01 Reply Quote 1
                    • T Offline
                      Tomas5 @Łukasz Szmigiel
                      last edited by Tomas5 14 Apr 2022, 19:01

                      @łukasz-szmigiel did’t tried it yet with new firmware but since you mentioned it last time. I was looking at this and i have this issue too. Not every time but usualy it is few tenths or even hundreds meters. But there are some exceptions without any altitude drop. I use gps + galileo all the time. If weather stay good i will report tomorrow test with latest firmware. And in my case it starts on higher altitude and then drops down to real altitude. I just noticed you have it in oposite direction.

                      Ł 1 Reply Last reply 14 Apr 2022, 21:30 Reply Quote 0
                      • Ł Offline
                        Łukasz Szmigiel @Tomas5
                        last edited by 14 Apr 2022, 21:30

                        @tomas5 it typically drops from too high, approx 70 - 90 meters during first 30 - 60s of workout

                        S9PP 2.40.44

                        T 1 Reply Last reply 16 Apr 2022, 15:44 Reply Quote 0
                        • T Offline
                          Tomas5 @Łukasz Szmigiel
                          last edited by 16 Apr 2022, 15:44

                          @łukasz-szmigiel i been on bike today, no issue with altitude drop at begining. But before i pressed start i was waiting for another minute after green gps icon apeared because i was setting up navigation and suunto plus feature.

                          Ł 1 Reply Last reply 16 Apr 2022, 16:13 Reply Quote 0
                          • Ł Offline
                            Łukasz Szmigiel @Tomas5
                            last edited by 16 Apr 2022, 16:13

                            @tomas5 this is well known. Although I’d like to know whether I should wait for ten more seconds or two more minutes.

                            S9PP 2.40.44

                            F 1 Reply Last reply 17 Apr 2022, 12:16 Reply Quote 1
                            • F Offline
                              freeheeler @Łukasz Szmigiel
                              last edited by 17 Apr 2022, 12:16

                              @łukasz-szmigiel
                              it is the first time I see it that obvious since the campground is really flat.
                              in this case, yes it would be helpful to distinguish between satellite lock and “altitude lock” 🙂

                              Screenshot_20220417-140351~2.png

                              Screenshot_20220417-140335~2.png

                              living sideways

                              I 1 Reply Last reply 17 Apr 2022, 16:56 Reply Quote 0
                              • I Offline
                                isazi Moderator @freeheeler
                                last edited by 17 Apr 2022, 16:56

                                @freeheeler for activities shorter than 15 minutes the issue is that fusedalti may not kick in.

                                Watch: Suunto Vertical Ti

                                Blog: isazi's home

                                F 1 Reply Last reply 17 Apr 2022, 18:02 Reply Quote 1
                                • F Offline
                                  freeheeler @isazi
                                  last edited by 17 Apr 2022, 18:02

                                  @isazi
                                  I know, it was around 30mins

                                  living sideways

                                  T 1 Reply Last reply 18 Apr 2022, 15:53 Reply Quote 1
                                  • T Offline
                                    Tomas5 @freeheeler
                                    last edited by 18 Apr 2022, 15:53

                                    Today on bike i didn’t have problem with altitude at beginning. But it is funny that lowest point is 375m, highest point is 979m. But my ascent is only 557m which is less than difference between lowest and highest point. By suunto app map planer it should be around 800m. But without barometer i don’t have big expectations from this measurement.

                                    Ł I 2 Replies Last reply 18 Apr 2022, 20:07 Reply Quote 0
                                    • Ł Offline
                                      Łukasz Szmigiel @Tomas5
                                      last edited by 18 Apr 2022, 20:07

                                      @tomas5 I don’t expect it to be perfect. I just want to know when to start the activity 😄 my experience when trekking is that I usually get 1 - 3m error in altitude when checking on marked peaks, with S5 and Galileo. And I find it remarkable.

                                      S9PP 2.40.44

                                      1 Reply Last reply Reply Quote 0
                                      • I Offline
                                        isazi Moderator @Tomas5
                                        last edited by 18 Apr 2022, 21:31

                                        @tomas5 yes depending on the route itself you may see less ascent with baroless devices because of the 7m threshold.

                                        Watch: Suunto Vertical Ti

                                        Blog: isazi's home

                                        T 1 Reply Last reply 19 Apr 2022, 05:35 Reply Quote 2
                                        • T Offline
                                          Tomas5 @isazi
                                          last edited by 19 Apr 2022, 05:35

                                          @isazi yes probably this reason, when i checked altitude against marked peaks I have same result as @Łukasz-Szmigiel usually few meters difference, only rarely few tens of meters.

                                          T 1 Reply Last reply 3 May 2022, 06:39 Reply Quote 0
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