Talk:Accuracy of GNSS data
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Clouds
A day with heavy clouds may also difficult signal reception. I noticed that on smartphone GPS. --SergioAJV
Smartphone Armband Problem
In my case my smartphone armband introduces a systematic positioning error in a forest so far. Wearing it on the right arm shifts the detected position by roughly 5m to the right. I detected it while comparing tracks from the same path but with opposite running directions. I suppose it can be explained with shadowing of my body and reflections on the trees. Mounting the smartphone on the top of the head strongly improves accuracy. --lukie80