I've tried a couple of ways to survey in new buildings with my GPS.
Obviously, just walking around the outside won't work because of
reflections and obscuring of satellites. So first I tried sighting along
each edge while walking toward or away from the building and keeping a
track. Results were mediocre because the error was a bit high in spots.
I've gotten more satisfactory results by sighting along each edge and
collecting a single averaged waypoint on each side of the building to
let me draw a line. This takes a while -- eight points just for a
rectangular building. Cold work at -15 C. (5 degrees F.), I must say. At
the end of it, I know the estimated error at each point, and the results
seem satisfactory when I draw them out.
Maybe obvious, but for me it was lesson learned.
TomT5454
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