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    Suunto 9 Highly inaccurate speed readings

    Scheduled Pinned Locked Moved Suunto 9
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    • surfboomerangS Offline
      surfboomerang @Dimitrios Kanellopoulos
      last edited by

      @Dimitrios-Kanellopoulos Because the wind forecast is not very good in the near future, I decided to test the profiles by car to see if the SUP or WIndsurf profile does make a change.

      I started an activity with a SUP profile and drove on the highway with the car on cruise control (about 110 km/h). Below is the resulting graph:

      Capture SUP profile.PNG

      I also did the test with the Windsurfing profile (cruise control at 100 km/h):
      Capture Windsurfing profile.PNG

      The windsurf profile looks pretty clear this time, but I doubt that this is because of the profile I think I was lucky with such a clean graph this time. As you can see on my first graph it can still spike really up and down.

      What really grind my gears is that the spikes are almost always identical in height and in a lot of the cases has the same drop value as the spike a second before.

      An example to clarify:
      If I drive an average of 110km/h and I see a spike of 120km/h, in a lot of cases it follows the next second with a drop to 100km/h. So it averages again to 110km/h, but the recorded max speed is 120km/h

      It is so common that the spikes are almost identical in height and drops that I can’t really imagine that this is a GPS reception issue. More like a GPS recording issue. Like the watch is recording too fast ahead and than slowing down to compensate…

      If you look at the line below, I see that the trackpoints are perfectly in line with the driving direction, but they do not have even distance between them some are closer of further apart, although I was driving at a constant speed.
      Capture points.PNG

      Is there a possibility to see the number of satellites or reception quality from the recordings?

      Suunto Vertical Titanium Solar
      OnePlus Nord 4

      Dimitrios KanellopoulosD 2 Replies Last reply Reply Quote 2
      • Dimitrios KanellopoulosD Offline
        Dimitrios Kanellopoulos Community Manager @surfboomerang
        last edited by

        @surfboomerang keep in mind that the spikes are vise versa. Aka you stopped.

        Community Manager / Admin @Suunto
        Creator of Quantified-Self.io
        youtube.com/c/dimitrioskanellopoulos
        https://instagram.com/dimitrioskanellopoulos
        https://www.strava.com/athletes/7586105

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        • Dimitrios KanellopoulosD Offline
          Dimitrios Kanellopoulos Community Manager @surfboomerang
          last edited by

          @surfboomerang I am working on QS v2 to show those differently and support more data btw

          Community Manager / Admin @Suunto
          Creator of Quantified-Self.io
          youtube.com/c/dimitrioskanellopoulos
          https://instagram.com/dimitrioskanellopoulos
          https://www.strava.com/athletes/7586105

          surfboomerangS 1 Reply Last reply Reply Quote 0
          • surfboomerangS Offline
            surfboomerang
            last edited by

            Little status update:
            Suunto support requested to return the watch for investigation.

            Lets see if they can find something…

            Suunto Vertical Titanium Solar
            OnePlus Nord 4

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            • surfboomerangS Offline
              surfboomerang
              last edited by surfboomerang

              Watch is replaced by Suunto support. Just got my new one.
              My first run looks promising. No real spikes like I had before. I’ll test high speed sports soon to see if my issue is really resolved.

              Suunto Vertical Titanium Solar
              OnePlus Nord 4

              1 Reply Last reply Reply Quote 2
              • surfboomerangS Offline
                surfboomerang @Dimitrios Kanellopoulos
                last edited by

                @Dimitrios-Kanellopoulos The new version of the app looks great btw!!

                Is it possible that the suunto 9 doesn’t record all the fields you have in the app? (like battery level, GPS satellite status etc…).
                Because I selected those settings in my profile settings, but the data was not available in the graph.

                Suunto Vertical Titanium Solar
                OnePlus Nord 4

                Dimitrios KanellopoulosD 1 Reply Last reply Reply Quote 0
                • Dimitrios KanellopoulosD Offline
                  Dimitrios Kanellopoulos Community Manager @surfboomerang
                  last edited by

                  @surfboomerang those fields are recroding just not exported. You need the SML files and I still dont have support for those. However I will add as it’s at least the last feature I ll push for now.

                  Regarding my data that have those fields that is because we use another tool internal to extract those data

                  Community Manager / Admin @Suunto
                  Creator of Quantified-Self.io
                  youtube.com/c/dimitrioskanellopoulos
                  https://instagram.com/dimitrioskanellopoulos
                  https://www.strava.com/athletes/7586105

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                  • surfboomerangS Offline
                    surfboomerang
                    last edited by

                    Bringing an old topic back to life after firmware update 2.8.28…

                    @Dimitrios-Kanellopoulos and @dirty-hippie
                    Unfortunately the speed spikes are still not correctly filtered for my case. I did two testruns today. One with GPS only and the other one with GPS+GALILEO.

                    I was driving a steady 57km/h during this run

                    Below are the results:

                    GPS Only
                    Capture.PNG

                    GPS+GALILEO
                    Capture2.PNG

                    Suunto Vertical Titanium Solar
                    OnePlus Nord 4

                    Dimitrios KanellopoulosD 1 Reply Last reply Reply Quote 0
                    • Dimitrios KanellopoulosD Offline
                      Dimitrios Kanellopoulos Community Manager @surfboomerang
                      last edited by

                      @surfboomerang Ok. Thanks for this.

                      I will have to escalate this. I would like to know how much this can happen in other modes.

                      Btw what sport mode do you use? PErhaps there is different bahaviour per sport mode?

                      Community Manager / Admin @Suunto
                      Creator of Quantified-Self.io
                      youtube.com/c/dimitrioskanellopoulos
                      https://instagram.com/dimitrioskanellopoulos
                      https://www.strava.com/athletes/7586105

                      surfboomerangS 1 Reply Last reply Reply Quote 0
                      • surfboomerangS Offline
                        surfboomerang @Dimitrios Kanellopoulos
                        last edited by surfboomerang

                        @Dimitrios-Kanellopoulos This time I used the sports mode “Other”, but I have seen this behaviour also with “Windsurfing”.

                        I checked a move that I did yesterday. I selected the profile “Running” and had GALILEO on.
                        Capture3.PNG

                        So it looks like it happens on all sport modes, but the spikes (and dips) are greater for sports with higher speeds

                        Suunto Vertical Titanium Solar
                        OnePlus Nord 4

                        Dimitrios KanellopoulosD 1 Reply Last reply Reply Quote 0
                        • Dimitrios KanellopoulosD Offline
                          Dimitrios Kanellopoulos Community Manager @surfboomerang
                          last edited by

                          @surfboomerang what files are you reading ?

                          Community Manager / Admin @Suunto
                          Creator of Quantified-Self.io
                          youtube.com/c/dimitrioskanellopoulos
                          https://instagram.com/dimitrioskanellopoulos
                          https://www.strava.com/athletes/7586105

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                          • surfboomerangS Offline
                            surfboomerang
                            last edited by surfboomerang

                            @Dimitrios-Kanellopoulos The files above are GPX exports from Runalyze.

                            Suunto Vertical Titanium Solar
                            OnePlus Nord 4

                            Dimitrios KanellopoulosD 1 Reply Last reply Reply Quote 0
                            • Dimitrios KanellopoulosD Offline
                              Dimitrios Kanellopoulos Community Manager @surfboomerang
                              last edited by

                              @surfboomerang I would prefer to look at the fit file.

                              Do you have some SA link for me of the files with these issues ?

                              Community Manager / Admin @Suunto
                              Creator of Quantified-Self.io
                              youtube.com/c/dimitrioskanellopoulos
                              https://instagram.com/dimitrioskanellopoulos
                              https://www.strava.com/athletes/7586105

                              surfboomerangS 1 Reply Last reply Reply Quote 0
                              • surfboomerangS Offline
                                surfboomerang @Dimitrios Kanellopoulos
                                last edited by surfboomerang

                                @Dimitrios-Kanellopoulos I sent you the links in a pm

                                Suunto Vertical Titanium Solar
                                OnePlus Nord 4

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                                • surfboomerangS Offline
                                  surfboomerang
                                  last edited by

                                  <Frustration mode>

                                  Can someone tell me if this issue is resolved in the upcoming firmware update?
                                  I did a windsurf session today on a rainy day and I had GPS+Galileo on. The picture below shows a segment of a track that is almost 100 km like this.
                                  As you can see it is a horrible recording of speed!!! 😫 😫

                                  Annotation 2019-10-06 165047.png
                                  </Frustration mode>

                                  Suunto Vertical Titanium Solar
                                  OnePlus Nord 4

                                  freeheelerF Dimitrios KanellopoulosD 2 Replies Last reply Reply Quote 1
                                  • freeheelerF Offline
                                    freeheeler @surfboomerang
                                    last edited by freeheeler

                                    @surfboomerang
                                    I just compared my recordings from a3p to s9b within SA… s9b indeed gives a spikier graph… strange!

                                    a3p: https://app.suunto.com/move/skiingone/5d836edd58e211b5ae86859e

                                    s9b:
                                    https://app.suunto.com/move/skiingone/5d921b3c58e2111193c1ec1c

                                    living sideways

                                    surfboomerangS 1 Reply Last reply Reply Quote 0
                                    • freeheelerF Offline
                                      freeheeler
                                      last edited by

                                      and just noticed that the exported link displays my highest point of 948m as ascent… 👎

                                      living sideways

                                      fejkerF 1 Reply Last reply Reply Quote 0
                                      • surfboomerangS Offline
                                        surfboomerang @freeheeler
                                        last edited by

                                        @TELE-HO I haven’t seen those spikes with my old a3p either. Only with my s9 baro.

                                        Suunto Vertical Titanium Solar
                                        OnePlus Nord 4

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                                        • Dimitrios KanellopoulosD Offline
                                          Dimitrios Kanellopoulos Community Manager @surfboomerang
                                          last edited by

                                          @surfboomerang should be. Wait for end Oct

                                          Community Manager / Admin @Suunto
                                          Creator of Quantified-Self.io
                                          youtube.com/c/dimitrioskanellopoulos
                                          https://instagram.com/dimitrioskanellopoulos
                                          https://www.strava.com/athletes/7586105

                                          surfboomerangS 2 Replies Last reply Reply Quote 1
                                          • surfboomerangS Offline
                                            surfboomerang @Dimitrios Kanellopoulos
                                            last edited by

                                            @Dimitrios-Kanellopoulos That would be great! Thanks!

                                            Suunto Vertical Titanium Solar
                                            OnePlus Nord 4

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