1D-FDTD Characterization of Ionosphere Influence on Ground Penetrating Radar Data Inversion

2014 ◽  
Vol 62 (4) ◽  
pp. 2223-2230 ◽  
Author(s):  
Marco Restano ◽  
Giovanni Picardi ◽  
Roberto Seu
Keyword(s):  
Ground Penetrating Radar ◽  
Radar Data ◽  
Data Inversion ◽  
Ground Penetrating

scholarly journals Characterization of the shallow structures of active fault zones using 3-D ground-penetrating radar data

2008 ◽  
Vol 113 (B10) ◽  
Author(s):  
Alastair F. McClymont ◽  
Alan G. Green ◽  
Pilar Villamor ◽  
Heinrich Horstmeyer ◽  
Christof Grass ◽  
...  
Keyword(s):  
Ground Penetrating Radar ◽  
Active Fault ◽  
Radar Data ◽  
Fault Zones ◽  
Ground Penetrating

Radius estimation of subsurface cylindrical objects from ground-penetrating-radar data using full-waveform inversion

Geophysics ◽  
2018 ◽  
Vol 83 (6) ◽  
pp. H43-H54 ◽  
Author(s):  
Tao Liu ◽  
Anja Klotzsche ◽  
Mukund Pondkule ◽  
Harry Vereecken ◽  
Yi Su ◽  
...  
Keyword(s):  
Ground Penetrating Radar ◽  
Waveform Inversion ◽  
Radar Data ◽  
Full Waveform Inversion ◽  
Data Inversion ◽  
Full Waveform ◽  
Wide Range ◽  
Object Parameters ◽  
Ground Penetrating ◽  
Effective Source

Ray-based radius estimations of subsurface cylindrical objects such as rebars and pipes from ground-penetrating-radar (GPR) measurements are not accurate because of their approximations. We have developed a novel full-waveform inversion (FWI) approach that uses a full-waveform 3D finite-difference time-domain (FDTD) forward-modeling program to estimate the radius including other object parameters. By using the full waveform of the common-offset GPR data, the shuffled complex evolution (SCE) approach is able to reliably extract the radius of the subsurface cylindrical objects. A combined optimization of radius, medium properties, and the effective source wavelet is necessary. Synthetic and experimental data inversion returns an accurate reconstruction of the cylinder properties, medium properties, and the effective source wavelet. Combining FWI of GPR data using SCE and a 3D FDTD forward model makes the approach easily adaptable for a wide range of other GPR FWI approaches.

Full-waveform inversion of Ground Penetrating Radar data for target characterization in multilayer environments

2020 ◽  
Author(s):  
Alessandro Fedeli ◽  
Matteo Pastorino ◽  
Andrea Randazzo
Keyword(s):  
Ground Penetrating Radar ◽  
Waveform Inversion ◽  
Region Of Interest ◽  
Mathematical Structure ◽  
Radar Data ◽  
Mathematical Framework ◽  
Qualitative Properties ◽  
Dielectric Characterization ◽  
Ground Penetrating

<p>In the last decades, ever growing efforts have been devoted to the development of techniques for extracting information from Ground Penetrating Radar (GPR) measurements. In particular, the processed data are used to retrieve two different kinds of features. The first kind includes the so-called qualitative properties of buried targets, which are typically related to the location and/or the shape of the objects. The second kind of features is related to the quantitative dielectric characterization of the underground targets. Both strengths and weaknesses of qualitative and quantitative approaches are well known in the scientific community. Despite the more complex mathematical structure of quantitative techniques, their use is attracting an increasing attention in multiple geophysical and engineering applications.</p><p>In this contribution, the full dielectric characterization of the region of interest is retrieved by a quantitative inversion approach that works in the mathematical framework of Lebesgue spaces with variable exponents. The most important parameter of this algorithm is represented by the map of the exponent function inside the investigation domain. Here, different strategies for obtaining and refining this map in an adaptive fashion iteration-by-iteration are proposed. Numerical results are presented to check the effectiveness of the inversion approach.</p>

Reconstructing Properties of Subsurface from Ground-Penetrating Radar Data

PIERS Online ◽  
2006 ◽  
Vol 2 (6) ◽  
pp. 567-572
Author(s):  
Hui Zhou ◽  
Dongling Qiu ◽  
Takashi Takenaka
Keyword(s):  
Ground Penetrating Radar ◽  
Radar Data ◽  
Ground Penetrating

scholarly journals Ice thickness distribution of all Swiss glaciers based on extended ground-penetrating radar data and glaciological modeling

2021 ◽  
pp. 1-19
Author(s):  
Melchior Grab ◽  
Enrico Mattea ◽  
Andreas Bauder ◽  
Matthias Huss ◽  
Lasse Rabenstein ◽  
...  
Keyword(s):  
Ground Penetrating Radar ◽  
Thickness Distribution ◽  
Radar Data ◽  
Tourism Industry ◽  
Swiss Alps ◽  
Ice Thickness ◽  
Hazard Management ◽  
Bed Topography ◽  
Ice Volume ◽  
Ground Penetrating

Abstract Accurate knowledge of the ice thickness distribution and glacier bed topography is essential for predicting dynamic glacier changes and the future developments of downstream hydrology, which are impacting the energy sector, tourism industry and natural hazard management. Using AIR-ETH, a new helicopter-borne ground-penetrating radar (GPR) platform, we measured the ice thickness of all large and most medium-sized glaciers in the Swiss Alps during the years 2016–20. Most of these had either never or only partially been surveyed before. With this new dataset, 251 glaciers – making up 81% of the glacierized area – are now covered by GPR surveys. For obtaining a comprehensive estimate of the overall glacier ice volume, ice thickness distribution and glacier bed topography, we combined this large amount of data with two independent modeling algorithms. This resulted in new maps of the glacier bed topography with unprecedented accuracy. The total glacier volume in the Swiss Alps was determined to be 58.7 ± 2.5 km3 in the year 2016. By projecting these results based on mass-balance data, we estimated a total ice volume of 52.9 ± 2.7 km3 for the year 2020. Data and modeling results are accessible in the form of the SwissGlacierThickness-R2020 data package.

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