Ground Penetrating Radar is a geophysical method that uses radar pulses to image the subsurface. This non-conductive method uses electromagnetic radiation in the microwave band (UHF/VHF frequencies) of the radio spectrum, and detects the reflected signals from subsurface structures. GPR uses high frequency radio waves and emits electromagnetic energy into the ground. When the energy encounters a buried object or a boundary between materials having different Permittivity's, it may be reflected or refracted back to the surface. A receiving antenna can then record the variations in the return signal.
While in the utility locating industry many types of technologies are used to ensure for precise data corroborated across a variety of detection mechanisms, anybody who uses GPR understands quickly that it is the most powerful and efficient tool in the detection business, as it is often used by location crews as their primary resource of underground information.
This method is non-intrusive as well as highly accurate, and can avoid disastrous utility damage and keep restorations costs at bay.