Nonlinear Spectral Processing of GPR Signals

Abstract

This paper presents the results of extended approaches to processing signals of pulse ultra-wideband (UWB) ground-penetrating radar (GPR). These approaches are based on improving the algorithms of inverse scattering problem solutions. From applying point of view, the case, when the studying construction consists of a finite number of layers whose thickness is commensurate with the spatial size of the probing pulse, is very important. For this instance, the procedure of numerical correction of the reference (probing) signal is proposed. Using the results of this rectification for creating the algorithms of inverse problem solutions allowed to propose the new technique of thickness measurement problem. The obtained data are based, on the one hand, on the results of real laboratory experiments, and, on the other hand, on the results of numerical simulation. The presented graphs demonstrate the effectiveness of the proposed approach. The reached results are important and relevant primarily for technical applications related to the non-destructive testing of the current condition of critical infrastructure objects, primarily roads and bridges.