[time-nuts] High accuracy? GPS position

Murray Greenman Murray.Greenman at rakon.com
Wed Sep 9 20:51:34 UTC 2009

How do you KNOW your position to such accuracy? Is it in fact possible
to survey your position to that accuracy by any independent means?

If, for example, you use official survey marks to determine your
position by direct measurement, are the survey marks really that


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