GPS altitude meter
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Hi, I’m new here. can you please tell me how much the altitude data (altitude meters) may deviate. On my last tours (training started where gps signal was found and also with iphone sync) the deviation at the summit was always greater than 10m! thank you for your help!!!
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@mrony Hello. Couple of extra details, please:
Do you have the Baro version?
How much greater than 10m? (On average)
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@fenr1r yes, i have the baro9! With the newest Update! It is between 10 and 20m!! 14m, 11m and so on! BR
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@mrony Thanks.
Tricky. 10m altitude variance is the upper threshhold for what Suunto consider reasonable performance for the Baro version. (For the non-Baro, your experience wouldn’t really indicate a problem.)
@Dimitrios-Kanellopoulos and others may want to weigh in on the 10-20m you are seeing.
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@fenr1r said in GPS altitude meter:
the non-Baro, your experience wouldn’t really indicate a problem.)
Thanks for the answer, i will Connect Suunto! BG -
@mrony
did you set the altitude before your activity manually? -
@freeheeler i have Open the activity, waited for the Signal (~10min)! infront of That, i Sync the baro9 with the suunto-App! After That i Start the activity!
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@mrony
was your observation a one time thing or do you observe that frequently? -
@freeheeler frequently - in every activity
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@mrony
honestly, I did not notice this behaviour. It could be that FusedAlti is not correcting the altitude good enough but this should be in all directions, most likely under a Gauss bell.
I once passed by a marked point on a hike and my watch was to the spot.
Honesty again: I don’t care so much about 10 or 20m. When I look at the map and know by topography plus approximate altitude where I am, I’m fine.
But I understand disappointment.
BTW changing and windy weather does challenge FusedAlti IMHO -
@freeheeler as a rule it might not matter, but if I track with the watch - it should be reasonably accurate. When I’m at the summit, the data should be correct when the sun is shining!
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@mrony Yesterday at work I take a break and look at my current altitude and decide to update it via GPS.
After few minutes the watch notify me it’s ok.
I was at -7m … I try it 3 or 4 times it vary -5m , -6m.I was close to the bigest river of France not under the sea level…
Like you 9baro. I really hope the next update will improve/correct this. -
@g287-sf i also do!! I‘ll Tell this Theme to Suunto!
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@mrony
I need to mention something before this thread gets locked due to redundancy… if I climb summits that are between 2’500-3’500m I personally do not care about 10 or 20m. But maybe it’s just me?!Japanese cars by the way tend to show about 10% higher speeds.
living sideways
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@freeheeler It’s clearly far from just you but I have uses for that accuracy. And, as it doesn’t increase my hiking weight by too much, better to have it and not need it than …
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@fenr1r
true, I don’t fancy going over a cliff because of bad weather and wrong values. That’s why I also do not rely too much on the watch.
But the precision still is better than a compass, altimeter and a 50’000 map
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@freeheeler you’re right. But maybe some people need accurate gps for other thing than sport
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@g287-sf
I think before we keep this discussion going we need samples from @MRony where we can see the graph and have some fix points to indicate the deviation in altitude.
Location is most of the times spot on with my watch.notice where I left the sidewalk and cut the corner? (counter clockwise direction).
and altitude recorded e.g. at the highest point of the ride compared to what’s stored in swiss topo maps.
I think it’s close to top notch.
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we need samples from @MRony where we can see the graph and have some fix points to indicate the deviation in altitude.
Preferably with simultaneous, co-located fixes from other devices with known generally superior accuracy.
