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)?
>
> Effective as of Midnight 01 May 2000, Selective Availability has been
> set to zero."
>
>
> "THE WHITE HOUSE
>
> Office of the Press Secretary
>
> For Immediate Release May 1, 2000
>
> STATEMENT BY THE PRESIDENT REGARDING THE UNITED STATES' DECISION TO STOP
> DEGRADING GLOBAL POSITIONING SYSTEM ACCURACY
>
> Today, I am pleased to announce that the United States will stop the
> intentional degradation of the Global Positioning System (GPS) signals
> available to the public beginning at midnight tonight. We call this
> degradation feature Selective Availability (SA). This will mean that
> civilian users of GPS will be able to pinpoint locations up to ten times
> more accurately than they do now. ..."
My Garmin GPS routinely gets accuracy to within 13 - 15 _feet_. A
freind with the same GPS often gets down to 6 feet, although he's on the
east coast and I'm in the upper midwest. - David