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jwilberding
on April 24, 2011
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GPS satellites get a serious upgrade
I am not sure where you get your numbers, but DGPS can get within half a cm about. GPS is used by many land surveyors for this reason.
tesseract
on April 24, 2011
[–]
To get the sub-cm accuracy you need an RTK GPS system which as I recall is not quite the same thing as DGPS (as DGPS is traditionally thought of).
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