[time-nuts] Averaging Location for Position Hold
D.VanHorn at elec-solutions.com
Tue Sep 13 21:25:20 UTC 2011
Also, can you really trust Google Earth as an authoritative source?
I'm not sure. An interesting test would be to go find a USGS
benchmark or a section marker near you then enter it's location into
Google. See if Google hits the marker.
For what it's worth, my Thunderbolts here did a 48 hour survey, and the position they report, fed into google earth, hits the north side of the 3' x 3' skylight they are in.
Roughly 18" error.
Maybe luck, but they both report almost identical positions. I'm north of Denver, so I'm a bit off the spherical average.
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