An Innovative Technique for Estimating the Radius of Buried Cylindrical Targets Using GPR
Ground-Penetrating Radar (GPR) data analysis provides quantitative information about the objects buried in a medium, such as their sizes or depths. This is achieved by studying the wave reflections caused by the electromagnetic contrasts in the medium. This paper proposed an innovative technique for the determination of the radius of a buried cylindrical object based on the fitting of selected reflected points in the GPR trace to a geometric model. The performances of this technique were evaluated using data generated by a GPR simulator, gprMax, which uses the Finite-Difference Time-Domain (FDTD) method. Simulation results show that our technique can estimate the radius of the buried cylinder with Mean Absolute Percentage Error (MAPE) of 0.5%. A comparative study of our technique with another one from the literature shows a higher accuracy of our technique with radius estimation carried out in simpler steps, reflecting its robustness.
KeywordsBuried cylindrical radius estimation Ground penetrating radar (GPR) Non-Destructive testing (NDT)
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