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Ground Penetrating Radar (GPR)

Ground Penetrating Radar (GPR) is a geophysical exploration method used to investigate subsurface structures by transmitting electromagnetic waves into the ground and recording waves reflected from boundaries with different electrical properties. Electromagnetic waves emitted from a transmitting antenna propagate through the subsurface and are received by a receiving antenna as waveforms after undergoing physical processes such as transmission, reflection, and refraction. During a GPR survey, the transmitting and receiving antennas are moved at a constant speed or at regular intervals along the ground surface while the received signals are continuously recorded. By arranging the recorded waveforms in the order of acquisition, a radar profile is obtained, which provides a two-dimensional image of the subsurface.