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Old 04-07-2008, 02:07 AM
clifto
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Default Re: simple GPS lat/lon display?

News wrote:
> clifto wrote:
>> 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.)

>
> "What is the status of Selective Availability (SA)?


What does SA have to do with the 2008 accuracy specification I posted?

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