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Author Topic: GPS question?  (Read 3588 times)

Offline masterkeymaster

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GPS question?
« on: September 27, 2011, 07:39:09 PM »
If I take a GPS unit and read off the user way point, then in 57 days later I come back to the same spot will I get the same reading? If not what moved?
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Offline Biff

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Re: GPS question?
« Reply #1 on: September 28, 2011, 12:34:48 PM »
You'll get the same reading, within the margin of error of your GPS receiver.

The GPS system would be useless otherwise.
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Offline iflyhi

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Re: GPS question?
« Reply #2 on: September 28, 2011, 03:18:39 PM »
how close are you trying to get ?  pin point?  gps on my boat is accurate to approx 20 feet.   to pin point you need to be involved with government
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Offline AB9IL

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Re: GPS question?
« Reply #3 on: September 30, 2011, 01:20:52 AM »
You can get nearly pinpoint accuracy with a WAAS enabled receiver, which uses differential GPS techniques to null out a great deal of the errors.  It is possible for an aeronautical waypoint to be moved, but that is not very common.  You own user-crated waypoints should be stationary.
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