Comment by Robomike
Just to push it up... compared with my backup Jolla (marginal note: is it enthusiasm or idiocy to buy the same device twice, just because a fear of breakdown?): that second one adds further ~20 meters....
View ArticleAnswer by dthierbach for GPS/Glonass: displays 50m too high?
Can confirm (also in Germany). It's possible that this is somehow influenced by the reference system. http://www.ottmarlabonde.de/L1/Pr1.Applet1.html shows a difference of about 50m between IfE89...
View ArticleComment by r0kk3rz
sailing? I hadn't thought of that use case, I was mainly thinking of things like hiking/mountaineering or downhill activities like mountain biking, skiing where you might want to track altitude along...
View ArticleComment by r0kk3rz
Agreed, barometers are much better for estimating altitude than GPS. I was thinking about making a temperature/barometer TOH
View ArticleAnswer by lechris for GPS/Glonass: displays 50m too high?
From my point of view it's a tough task to get altitude information right just from satelite navigation. It's based on trilateration (http://en.wikipedia.org/wiki/Trilateration) and if you take the...
View ArticleComment by RobNas
You've confirmed it's not GPS in common that's causing the issue? I would guess other GPS-devices can/would do the same...
View ArticleGPS/Glonass: displays 50m too high?
I noticed a height difference of about 50 meters, when I move to points of known height (absolute altitude above sea level) in Germany, even when the accuracy is high (a few meters) and the horizontal...
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