Data Quality of the Information Collected from GPR on a 3D Structure

Ghozzi, Rim; Lahouar, Samer; Souani, Chokri

doi:10.1007/978-3-030-21009-0_6

Cited by 2 publications

(1 citation statement)

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“…First, by positioning the GPR Tx and Rx antennas over the target, GPR A‐scans are generated using gprMax for a set period of time. The two‐way travel‐time (

\widehat {\Delta t}

) is measured using peak‐to‐peak method [9]. The theoretical two‐way travel‐time, Δt, can be calculated using (4):

\begin{equation}{{\Delta}}t\ = \frac{{2d\sqrt {{\varepsilon _r}} }}{c}\end{equation}

where c is the velocity of the EM wave in free space ( c = 0.3 m/ns), ε r is the relative permittivity of the background medium (for dry sand ε r = 3) and d is the depth of the cylinder.…”

Section: Technical Backgroundmentioning

confidence: 99%

FDTD‐based sensitivity analysis of GPR acquisition parameters for accurate detection of buried cylindrical objects

Ghozzi

Lahouar

Souani

2021

Electronics Letters

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Ground‐penetrating radar (GPR) is a non‐destructive technique used to assess the subsurface and locate any buried objects such as subterranean utilities. It emits electromagnetic radiations and detects the reflected signals from underground objects. Nevertheless, many GPR acquisition factors cannot easily be accounted for in evaluating the performance of the GPR system. To ensure more correct and accurate detection of the GPR signals reflected by a buried cylindrical object in a homogenous medium, sensitivity analysis of GPR data is proposed in this work. The numerical simulator gprMax, which is based on finite‐difference time‐domain, is used to generate GPR data. The data analysis results showed that the GPR measurement accuracy is more sensitive to the incident signal waveform than the other parameters. Thus, one of the major characteristics of GPR that can affect its accuracy is the incident waveform.

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“…First, by positioning the GPR Tx and Rx antennas over the target, GPR A‐scans are generated using gprMax for a set period of time. The two‐way travel‐time (

\widehat {\Delta t}

) is measured using peak‐to‐peak method [9]. The theoretical two‐way travel‐time, Δt, can be calculated using (4):

\begin{equation}{{\Delta}}t\ = \frac{{2d\sqrt {{\varepsilon _r}} }}{c}\end{equation}

where c is the velocity of the EM wave in free space ( c = 0.3 m/ns), ε r is the relative permittivity of the background medium (for dry sand ε r = 3) and d is the depth of the cylinder.…”