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    S9PP GPS Precision

    Scheduled Pinned Locked Moved Suunto 9 Peak Pro
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    • Dušan KovićD Offline
      Dušan Ković
      last edited by

      I just found this interesting. I merged around 10-15 trail running gpx tracks from september and october. Here is everything overlayed. On some places it is fine, on others is meh.

      6114b34f-f80e-42a9-9acf-a81ccf9f5425-image.png
      ed0fc061-29ae-4856-9eca-f47b5105873f-image.png
      1799b6ef-1116-49bd-bcc7-3271d6402b59-image.png
      5bf69531-0468-4de9-bfe3-ab1c11d39c7b-image.png
      7f564c5d-02b0-4d6f-9225-1187b6643e5d-image.png
      aee26343-8696-4aac-91ba-fed41d16fbc2-image.png
      9d68e92a-60c1-4a44-9bf8-c6499a24ce03-image.png

      I am guessing it is +/- 3m precise in the trees. In the open it is a lot better

      f3534fe8-55a5-46ad-985e-2feb303712e3-image.png
      781a6e8c-1bad-4dab-8042-2623d5b1ec82-image.png
      dc7051e0-fe34-4d1a-aa99-d7efcd131eac-image.png

      This is about +/- 1.5 to 2m.

      Around buildings it is terrible…

      98f2ee40-ad3c-4d46-bee2-a2aa027aeb5c-image.png

      SR
      SA latest beta
      Polar Verity Sense
      Pixel 6

      Łukasz SzmigielŁ 1 Reply Last reply Reply Quote 1
      • Łukasz SzmigielŁ Offline
        Łukasz Szmigiel @Dušan Ković
        last edited by

        @Dušan-Ković all up to specs with no dual band. Although it seems rather poor around the buildings - is it the area around the start of your activities? Usually the track quality is the worst for first few minutes.

        S9PP 2.40.38

        Dušan KovićD 1 Reply Last reply Reply Quote 1
        • Dušan KovićD Offline
          Dušan Ković @Łukasz Szmigiel
          last edited by

          @Łukasz-Szmigiel yup, all is fine with precision. This is just graphic representation of the specs.

          Yup, i start activities there, so I guess in the beginning it has less satellites or it just needs more time to pinpoint proper location. I always wait few minutes on the start screen

          SR
          SA latest beta
          Polar Verity Sense
          Pixel 6

          Łukasz SzmigielŁ 1 Reply Last reply Reply Quote 1
          • Łukasz SzmigielŁ Offline
            Łukasz Szmigiel @Dušan Ković
            last edited by

            @Dušan-Ković said in S9PP GPS Precision:

            I always wait few minutes on the start screen

            What for? The watch will figure it out eventually. Just enjoy your workout 🙂

            S9PP 2.40.38

            Dušan KovićD E 2 Replies Last reply Reply Quote 2
            • Dušan KovićD Offline
              Dušan Ković @Łukasz Szmigiel
              last edited by

              @Łukasz-Szmigiel to find gps lock, for green arrow to show up, and than maybe 30sec more

              SR
              SA latest beta
              Polar Verity Sense
              Pixel 6

              Łukasz SzmigielŁ 1 Reply Last reply Reply Quote 0
              • Łukasz SzmigielŁ Offline
                Łukasz Szmigiel @Dušan Ković
                last edited by

                @Dušan-Ković you have to wait a few minutes for the green arrow to show?

                S9PP 2.40.38

                Dušan KovićD 1 Reply Last reply Reply Quote 0
                • Dušan KovićD Offline
                  Dušan Ković @Łukasz Szmigiel
                  last edited by

                  @Łukasz-Szmigiel about 20-40sec + wait 30sec just in case. This is with sync before exercise. Few minutes was just a therm. Im fine with wait times

                  SR
                  SA latest beta
                  Polar Verity Sense
                  Pixel 6

                  1 Reply Last reply Reply Quote 1
                  • E Offline
                    Elipsus Silver Members @Łukasz Szmigiel
                    last edited by

                    @Łukasz-Szmigiel Th GPS system works in a way that it needs exactly 12.5 minutes to be fully “primed” (or “hot”), its a bit confusing, the GPS signal contains positional data about the other satellites in the constellation, and they are given in a “rolling” way and it needs 12.5 minutes to gather all the data,
                    That’s also what is contained in the “A GPS” data your watch regularly download, but from what I understood, the “from satellite data” is more precise and up-to-date (precise satellite position calculation is only valid 4 hours)

                    So, In an ideal world, one would wait 12.5 minutes to ensure that it gets the most precise and robust lock, its not really necessary, but waiting a bit after lock is always better so you can get at least of few other satellite position

                    sartoricS Łukasz SzmigielŁ 2 Replies Last reply Reply Quote 5
                    • sartoricS Offline
                      sartoric Moderator @Elipsus
                      last edited by

                      @Elipsus said in S9PP GPS Precision:

                      So, In an ideal world, one would wait 12.5 minutes to ensure that it gets the most precise and robust lock

                      Like the good ol’days 😁

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                      1 Reply Last reply Reply Quote 2
                      • Łukasz SzmigielŁ Offline
                        Łukasz Szmigiel @Elipsus
                        last edited by

                        @Elipsus I know. But why wait 12.5 minutes if there’s AGPS with good enough approximation? Isn’t it there so that there’s no need to wait so long for a fix?

                        S9PP 2.40.38

                        E 1 Reply Last reply Reply Quote 1
                        • E Offline
                          Elipsus Silver Members @Łukasz Szmigiel
                          last edited by

                          @Łukasz-Szmigiel because a fix means only 4 satellites hooked, if you wait more and get the full constellation(s) position, and hook to more sats, you have less risks of dropping signal as the watch will be able to quickly drop a satellite and use the values from others.
                          I’m not saying you have to wait 12.5 minutes, just that there is a good advantage to stay static a minute before going running, A-GPS helps, but its not entirely fool proof 🙂

                          ? Łukasz SzmigielŁ 2 Replies Last reply Reply Quote 3
                          • ? Offline
                            A Former User @Elipsus
                            last edited by

                            @Elipsus said in S9PP GPS Precision:

                            to stay static a minute before going running

                            True, my house is surrounded by trees, and waiting 1 minute or more makes a huge difference.

                            1 Reply Last reply Reply Quote 0
                            • Łukasz SzmigielŁ Offline
                              Łukasz Szmigiel @Elipsus
                              last edited by

                              @Elipsus it’s true that you need at last 4 satellites to have a fix, however with AGPS it’s possible to have a fix with more satellites, but as far as I understand it - there’s positional error coming from having an approximate data regarding current orbits that’s going to get updated after the watch receives a full almanac in aforementioned 12.5 minutes. So you’ll basically have a bigger error for some time at the beginning.

                              I’m simply wondering how much accuracy can one gain when waiting prior to starting the workout. Like in the actual data error for ~ 10k run (waiting vs starting instantly).

                              S9PP 2.40.38

                              1 Reply Last reply Reply Quote 0
                              • Dušan KovićD Offline
                                Dušan Ković
                                last edited by

                                So, conclusion is that it is better to wait for minut or two to get better starting track. If watch is constantly getting new satellites, I am guessing that tracking should improve with time.

                                I’ve noticed that sometimes gps tracks are offset by few meters, not just parts, entire track. Never figured out why.

                                SR
                                SA latest beta
                                Polar Verity Sense
                                Pixel 6

                                Łukasz SzmigielŁ 1 Reply Last reply Reply Quote 1
                                • Łukasz SzmigielŁ Offline
                                  Łukasz Szmigiel @Dušan Ković
                                  last edited by

                                  @Dušan-Ković it seems to me that it’s either because of fused speed or some other way of smoothing the track. It’s offset but it’s not zigzagging.

                                  S9PP 2.40.38

                                  1 Reply Last reply Reply Quote 0
                                  • mikelM Offline
                                    mikel
                                    last edited by

                                    I also notice that the GPS is really bad for the first 500m. Have to say my Suunto Spartan and my wife’s S5Peak is accurate from the beginning. Can’t understand why the higher value watch has worse GPS performance.

                                    Also I have the feeling that it got worse after the last update.

                                    Hope it will be improved soon.

                                    pilleusP ? EgikaE 3 Replies Last reply Reply Quote 0
                                    • pilleusP Offline
                                      pilleus @mikel
                                      last edited by

                                      @mikel

                                      My Spartan Ultra is more accurate than the 9 Peak Pro. I tested the 9 Peak Pro the last 7 days, but GPS is not at the level of the old Spartan under the same conditions. And in 7 days I had two nights with OHR stopped after 3 hours of sleep.

                                      Now the 9 Peak Pro will begin its return journey … 🤙

                                      https://www.instagram.com/moves.are.life/
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                                      • ? Offline
                                        A Former User @mikel
                                        last edited by

                                        @mikel said in S9PP GPS Precision:

                                        Also I have the feeling that it got worse after the last update.

                                        never had/perceived a worsening after the update, same habits.

                                        1 Reply Last reply Reply Quote 0
                                        • EgikaE Offline
                                          Egika Platinum Member @mikel
                                          last edited by

                                          @mikel the first activity after an update or a reset can be negatively affected.
                                          after the second activity it should be good though. are you syncing AGPS regularly?

                                          t6, S6, Elementum Terra, Ambit 3 Sapphire, Spartan Ultra Copper, Traverse Alpha, S7 Graphite LE, S9B Ambassador, S9P Granite Blue Titanium, S9PP Titanium Sand, Vertical All Black, Race Titanium Charcoal,
                                          Race S All Black - TI Canary - Titanium Courtney

                                          mikelM 1 Reply Last reply Reply Quote 1
                                          • mikelM Offline
                                            mikel @Egika
                                            last edited by

                                            @Egika
                                            Yes, I am syncing AGPS regularly. All my running activities are bad since the Update. Mountainbiking is still looking good.

                                            20th November 2023
                                            IMG_7635.PNG IMG_7636.jpg

                                            25th January 2024

                                            IMG_7613.PNG IMG_7614.PNG

                                            Brad_OlwinB 1 Reply Last reply Reply Quote 0
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