gps accuracy

Is one gps more accurate than another

k7pyd wrote:

More expensive receivers can incorporate signals and signal processing
to reduce errors approaching submeter accuracies (using differential
corrections, multipath mitigation, better antenne, etc.

-Sam Wormley
http://edu-observatory.org/gps/gps_accuracy.html

Sam Wormley wrote:

To add a little to Sam's comments, I think he's talking about
dual-channel GPS receivers that do their own corrections for ionospheric
distortions, and are QUITE expensive...

But back to the hand-held types, first, WAAS corrections (in the US) add
to accuracy and Magellan's feature of doing automatic position averaging
will result in better displayed accuracy than a comparable Garmin
unit...

But some Garmin units allow waypoint averaging to increase the accuracy
of a recorded waypoint... (This isn't quite the same as displayed
accuracy)... Other than that, all GPS hand-helds are essentially the
same...

--
Jack

Get general GPS information at: http://www.gpsinformation.net/

Jack Yeazel wrote:

Jack, my mapping receivers, although expensive, are not dual
channel, echo can achieve submeter accuracy real time.

Sam Wormley wrote:


That's very interesting... Are those hand-held units?? I can't find
any by Googling...

--
Jack

Get general GPS information at: http://www.gpsinformation.net/