[OSM-talk] GPS Accuracy under Forest Canopy

[Mike N.]

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From: "Stephen Hope" <slhope at gmail.com>

> I've done some rain-forest hiking, and I've noticed similar results.
> If you really want to see some wandering tracks, try hiking along the
> base of some cliffs, in dense forest.

   The area I was in was in a steep valley, and some areas are really wild. 
In the example

http://home.att.net/~niceman/GPXTrace.jpg

 The upper left trace is mostly correct with the direction of travel shown. 
Point #1  I believe to be very accurate because it emerges in the correct 
corner of the parking lot.   After I spent time in the parking lot and 
retraced, the error level jumps to the 100 meter range and stays there.

  It will be interesting to compare when the leaves fall.