Development of Multi-Component GPR System and Field Experiment

Multi-component GPR system is developed. It is a part of integrated electromagnetic survey system. The GPR system has four antennas and is able to measure with four antenna patterns. Two field tests are conducted. First test was conducted to analyze the effect of angles between target, steel pipes, and survey line with two directional parallel antennas. Hyperbolic shapes of reflections in data differ by the angles, 0, 30, 60 and 90 degree. Two parallel antennas compensate each result at any survey direction. Summation of two pair of antenna improved the results. Second field was conducted to evaluate the multi-component migration. It is not big different for angle 0 configuration. However two component migration improved the image for angled configuration.