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Old 04-06-2008, 05:00 PM
clifto
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Default Re: simple GPS lat/lon display?

Kurt wrote:
> "Richard B. Gilbert" <rgilbert88@comcast.net> wrote:
>> GPS, or at least the civilian version of it, is only accurate to within
>> about 300 feet or 100 meters.

>
> It's been changed for a few years, now more like 15 meters. Clinton was
> the one that changed that.


http://www.navcen.uscg.gov/faq/gpsfaq.htm#Standard

SPS provides accuracy's of (for position, the accuracy with respect to
geographic, or geodetic coordinates of the Earth) within:
100 meters (2 drms) horizontal 156 meters (2 Sigma) vertical 300 meters
(99.99% prob.) horizontal 340 nanoseconds time (95% prob.)

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