Quote:
Originally Posted by tashirosgt
Are you talking about absolute or relative errors? If we are talking about the location of of two points relative to each other ( and not about their absolute location relative to coordinates on the earth) does the relative location have a 10m std. error? In addition to my curiosity about crop circles, I'm thinking of getting a GPS unit to help plan the grading of my yard.
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Absolute error.
With an absolute error of +/-10m for each of two points, the theoretical relative error in their separation is +/-20m. But in practical terms, if you measure the location of both points at the same time, or at times very close to each other, I think the error in separation would be close to 0m. (You'd get the same error in both measurements, so you could ignore it for your landscaping purposes).