Analysis of hyperbolic reflections amplitudes in GPR data

In this paper an analysis of the amplitude of the reflected signal in extracted points on hyperbolic reflections from radargram is presented. Currently, many papers deal with the automated search for hyperbola peak in radargram. On the other hand, according to the authors' best knowledge, there is an insufficient number of papers related to the extraction of points on hyperbolas prongs, even though they can be used to determine additional information, such as the radius of detected pipe or cable. In the first part of this paper a procedure for extraction of coordinates of points on hyperbolic reflections prongs. Second part of the paper contains more detailed analysis of the value of the reflected signal of extracted points in relation to different values of acquisition parameters. This analysis has two goals: (1) to conclude which parameter has the biggest influence to amplitude and (2) to determine whether an amplitude based stopping criteria for point extraction can be established.