A Ground Penetrating Radar (GPR) is a specialised piece of equipment radio waves to gather sub-surface data. Most often it is used to locate existing underground utilities and pipes and cables, although it also has applications within archaeology, geophysical engineering and the military.
The GPR works by projecting electromagnetic waves that travel through the earth to reflect signals and images back to the receiver. Detecting differences within the sub-surface to identify structures and objects such as rocks, pipes, cracks, voids and strong changes in material properties, GPR helps to understand what lies beneath the surface prior to drilling or digging.
GPR is effective at identifying services that are non-conductive or impossible to trace using traditional electronic methods. Depending on the project or site, GPR assists in planning the safe placement of new infrastructure.