
#1
Mar812, 05:06 PM

P: 355

I'm under the impression that this takes special equipment? We're talking centimeter precision by the way. Shouldn't I be able to get this from some App by now?!



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#2
Mar812, 08:19 PM

Sci Advisor
PF Gold
P: 2,245

It is specialist equip!! :)
Top of the line GSP systems I work with will give you 1 to 1.5 cm (10  15mm)accuracy at a cost of $20,000 or so because multiple units are needed for that sort of accuracy standard handheld GSP units like the Garmin ETrex etc will give down to maybe 35 metres of accuracy Dave Ohh I should actually qualify that .... We find that the vertical accuracy averages ~ half the quality of horizontal accuracy. So for a horizontal accuracy of 1cm, which under good conditions is quite achievable, the vertical accuracy will be ~ 2cm 


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