Abstract
Ground penetrating radar (GPR) investigations are often focused on the detection of subsurface targets such as barrels, pipes, and isolated patches of contaminants. Unfortunately many study areas also contain undesirable signals from other objects such as logs, concrete, and disrupted soil. Knowledge of the polarization properties of targets with different degrees of symmetry coupled with GPR data containing polarization information enhances the interpretation of GPR data over complex subsurface zones. An ongoing study at The Ohio State University is investigating GPR polarization with an array of antennas pulled by hand or towed behind an all-terrain vehicle. The two-channel GPR system contains a switch that alternates radiation from one antenna to a transmit antenna orthogonal to the first antenna. The receive antennas are in a crossed-dipole configuration located at the center of the array. Parallel, perpendicular, and cross polarization data. are received from subsurface targets from the two orthogonal transmit antennas.
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