This paper provides a comparative study between microwave tomography and synthetic 14 time-reversal imaging techniques as applied to ground penetrating radar (GPR) surveys. The 15 comparison is carried out by processing experimental data collected at a controlled test site, with 16 various types of buried targets at given subsurface depths and representative soil conditions. It is 17 shown that...

In this contribution, some possible effects of large band electromagnetic interferences on Ground Penetrating Radar (GPR) data are shown, and a possible way to counteract them is shown, too. The mitigation of the interferences is implemented thanks to a prototypal reconfigurable stepped frequency GPR system, that allows to program the integration time of the harmonic tones vs. the frequency. In...

A comprehensive analysis of electromagnetic (EM) inversion applied to pavement profiling by using a monostatic ground penetrating radar (GPR) is presented. Since in GPR systems using transfers EM (TEM) horns, the antenna is positioned close to the the investigated medium and a strong EM interaction occurs. This effect is taken into account by modeling the antenna with equivalent sources placed ...

Abstract Ballast fouling in railroad substructure is detrimental to railroad track effectiveness and its structural capacity. Ground penetrating radar (GPR) provides a rapid, effective and continuous approach to assess railroad substructure condition. However, unknown ballast dielectric constant and unclear interface between clean and fouled ballast limit the GPR assessment accuracy. In this st...

Abstract. Seasonal snowpack deeply influences the distribution of meltwater among watercourses and groundwater. During rain-on-snow (ROS) events, structure properties different snow ice layers dictate quantity timing water flowing out snowpack, increasing risk flooding jams. With ongoing climate change, a better understanding processes internal influencing outflows is needed to predict hydrolog...

Ground penetrating radar (GPR) has been applied for ballast layer inspection two decades, mainly the analysis of fouling levels. However, some issues that affect quality remain unsolved, such as involving GPR equipment (antenna) and correlation between indicator index. With aim solving these issues, in this paper, we investigated difference results different antennas, data processing technique,...

We introduce a combination of high-dimensional analysis of variance (HANOVA) and sequential probability ratio test (SPRT) to detect buried objects from an array ground penetrating radar (GPR) surveying a region of interest in a progressive manner. Using HANOVA, we exploit the transient characteristic of GPR signals in the time domain to extract information about buried objects at xed positions ...

Ground Penetrating Radar (GPR) is a flexible and cost-effective tool for performing structural integrity assessment and quick damage evaluation of manmade structures, including cultural heritage (CH) assets. In this context, this paper deals with the usefulness of GPR surveys enhanced by the use of a Microwave Tomographic data processing approach as a methodology for the diagnosis and monitorin...

This paper provides a comparative study between microwave tomography and synthetic 14 time-reversal imaging techniques as applied to ground penetrating radar (GPR) surveys. The 15 comparison is carried out by processing experimental data collected at a controlled test site, with 16 various types of buried targets at given subsurface depths and representative soil conditions. It is 17 shown that...

Ground Penetrating Radar (GPR) is one of the most widely exploited diagnostics tools in the fields of the water monitoring and management as well as in the recent application fields of the agricultural geophysics. In this work, we present the most recent results concerning with a state of art data processing for GPR based on accurate models of the inverse scattering at the basis of the sensing ...