I finally realized a need to acurately define ground control points. I understand that a consumer grade GPS ( 3 to 10m accuracy) is not enough. I was told that for photogrammetry I need 2 to 10cm accuracy.
I need advice on adequate entry level GPS system to define ground control points.
So far my limited research brings me to Trimble R6. However, it is 3 pieces (base rover and data collector), big box and about $8000. It is a bit overwhelming. Ideally it would be 1 piece.
Please, share what you are using or what you believe is an optimal system.