how close

[calibob1]

how close can an Iphone get to a survey with gps

 

[JustUs4All]

Civilian GPS close, that is about a 16 ft radiused circle centered on the device which will contain the point actually indicated.

 

[calibob1]

Civilian GPS close, that is about a 16 ft radiused circle centered on the device which will contain the point actually indicated.

Thanks its a 40 acre parcel, thats close enough

 

[JustUs4All]

@calibob1, that is the best that can be expected. If your access to any of the satellites is degraded (tree canopy cover, weather, bad antenna, etc) it will be worse and could be much worse.

 

[NCHillbilly]

@calibob1, that is the best that can be expected. If your access to any of the satellites is degraded (tree canopy cover, weather, bad antenna, etc) it will be worse and could be much worse.

Yep. I use Trimble centimeter GPS units in my job that cost thousands of dollars, but you can get down to >6-8 meters with tree cover even with them.

 

[LTZ25]

I've seem crews layout runway center lines with high level GPS and its amazing .