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hi


You are replying to:
Chemi
Posted 6/3/2016 8:07 AM (#819144 - in reply to #819134)
Subject: Re: Terrova GPS Accuracy





muskydope - 6/3/2016 7:42 AM

Not that I have one but...remember that GPS is accurate to about a 30 foot circumference form the point of your gps antenna. The newest systems have said within 5 feet, but I think that is more relegated to military technology.

Not anymore. They used to limit accuracy to non-military receivers but they stopped dithering the GPS signal in 2000; what they called "Selective Availability". http://www.gps.gov/systems/gps/modernization/sa/

http://www.gps.gov/systems/gps/modernization/sa/data/timeline.gif

The FAA collected data in early 2014 and it shows the horizontal accuracy of GPS SPS is often within ~1 m (with a good signal and good equipment): http://www.gps.gov/systems/gps/performance/accuracy/
http://www.nstb.tc.faa.gov/reports/PAN86_0714.pdf#page=22

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