How is the Resolution of a GPR System Determined?
This question is answered for us by the laws of physics which teach us that for any sensor, the wavelength – the length of a wave from peak-to-peak in a given medium – determines the minimum target size and also the minimum spacing detectable between two objects. For GPR roots inspection, target size refers to root diameter and target spacing refers to how close two (or more) roots can be and still be separable into two small roots and not one large root.
