Three-dimensional ground-penetrating radar methodologies for the characterization and volumetric reconstruction of underground tunneling

Núñez-Nieto, X.; Solla, Mercedes; Novo, Alexandre; Lorenzo, Henrique

doi:10.1016/j.conbuildmat.2014.08.083

Cited by 41 publications

(9 citation statements)

References 16 publications

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“…The survey of the developed GB-SAR system is similar to a 3D survey of ground penetrating radar (GPR) [28]. The main superiority of the GB-SAR over a 3D GPR system is its high resolution, as a result of the employed UWB Vivaldi antenna.…”

Section: Strengths and Limitations Of This Workmentioning

confidence: 83%

Post-Earthquake Damage Inspection of Wood-Frame Buildings by a Polarimetric GB-SAR System

et al. 2016

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Structural damage inspection after an earthquake is essential for safety assessment of the affected wood-frame buildings and for making knowledgeable decision regarding their repair, renovation, or replacement. We present a polarimetric radar system for sensing the concealed wood-frames damaged by earthquakes. This system employs an antenna array consisting of four linearly polarized Vivaldi antennas recording full-polarimetric radar echoes in an ultra-wideband ranging from 1 to 20 GHz. The detailed design of the system and the signal processing algorithms for high-resolution 3D imaging are introduced. We conducted a number of surveys on damaged wooden wall specimens in laboratory. The experiment results indicate that the high-frequency radar waves can penetrate the wooden walls. Deformations of wooden structures (about 2 cm displacement) inside the wall, as well as the concealed small metal nails (about 3 mm in diameter and less than 2 cm in length) and bolts can be clearly imaged. The shape and orientation of the wooden members have shown a great sensitivity to the radar polarization. It is concluded that radar polarimetry can provide much richer information on the condition of concealed building structures than the conventional single-polarization subsurface penetrating radar.

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Section: Strengths and Limitations Of This Workmentioning

confidence: 83%

Post-Earthquake Damage Inspection of Wood-Frame Buildings by a Polarimetric GB-SAR System

et al. 2016

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“…A catalogue of available test sites and laboratories, where GPR equipment, methodology and procedures can be tested, was prepared and is available online [13]. Additionally, WG 2 carried out a wide series of case studies where GPR was successfully employed in civil-engineering works and laboratory tests; some examples are found in [14][15][16][17][18][19][20].…”

Section: Cost Action Tu1208 and The Open Database Of Radargrams Initimentioning

confidence: 99%

TU1208 Open Database of Radargrams: The Dataset of the IFSTTAR Geophysical Test Site

Dérobert

Pajewski

2018

Remote Sensing

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This paper aims to present a wide dataset of ground penetrating radar (GPR) profiles recorded on a full-size geophysical test site, in Nantes (France). The geophysical test site was conceived to reproduce objects and obstacles commonly met in the urban subsurface, in a completely controlled environment; since the design phase, the site was especially adapted to the context of radar-based techniques. After a detailed description of the test site and its building process, the GPR profiles included in the dataset are presented and commented on. Overall, 67 profiles were recorded along eleven parallel lines crossing the test site in the transverse direction; three pulsed radar systems were used to perform the measurements, manufactured by different producers and equipped with various antennas having central frequencies from 200 MHz to 900 MHz. An archive containing all profiles (raw data) is enclosed to this paper as supplementary material. This dataset is the core part of the Open Database of Radargrams initiative of COST (European Cooperation in Science and Technology) Action TU1208 "Civil engineering applications of Ground Penetrating Radar". The idea beyond such initiative is to share with the scientific community a selection of interesting and reliable GPR responses, to enable an effective benchmark for direct and inverse electromagnetic approaches, imaging methods and signal processing algorithms. We hope that the dataset presented in this paper will be enriched by the contributions of further users in the future, who will visit the test site and acquire new data with their GPR systems. Moreover, we hope that the dataset will be made alive by researchers who will perform advanced analyses of the profiles, measure the electromagnetic characteristics of the host materials, contribute with synthetic radargrams obtained by modeling the site with electromagnetic simulators, and more in general share results achieved by applying their techniques on the available profiles.

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“…The use of 3D-GPR data processing and visualization has advanced the acceptance of the use of GPR for archaeological prospecting [16]. The use of 3D imaging techniques and processing software produces more realistic images of buried archaeological remains [17][18][19][20][21][22][23], which allows not only the discovery, but also the obtainment of 3D reconstructions of buried structures [24,25]. Furthermore, all the data produced can be combined in a Geographic Information System (GIS) to achieve a more comprehensive archaeological interpretation [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Reconstructing the Roman Site “Aquis Querquennis” (Bande, Spain) from GPR, T-LiDAR and IRT Data Fusion

et al. 2018

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This work presents the three-dimensional (3D) reconstruction of one of the most important archaeological sites in Galicia: "Aquis Querquennis" (Bande, Spain) using in-situ non-invasive ground-penetrating radar (GPR) and Terrestrial Light Detection and Ranging (T-LiDAR) techniques, complemented with infrared thermography. T-LiDAR is used for the recording of the 3D surface of this particular case and provides high resolution 3D digital models. GPR data processing is performed through the novel software tool "toGPRi", developed by the authors, which allows the creation of a 3D model of the sub-surface and the subsequent XY images or time-slices at different depths. All these products are georeferenced, in such a way that the GPR orthoimages can be combined with the orthoimages from the T-LiDAR for a complete interpretation of the site. In this way, the GPR technique allows for the detection of the structures of the barracks that are buried, and their distribution is completed with the structure measured by the T-LiDAR on the surface. In addition, the detection of buried elements made possible the identification and labelling of the structures of the surface and their uses. These structures are additionally inspected with infrared thermography (IRT) to determine their conservation condition and distinguish between original and subsequent constructions.

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Three-dimensional ground-penetrating radar methodologies for the characterization and volumetric reconstruction of underground tunneling

Cited by 41 publications

References 16 publications

Post-Earthquake Damage Inspection of Wood-Frame Buildings by a Polarimetric GB-SAR System

Post-Earthquake Damage Inspection of Wood-Frame Buildings by a Polarimetric GB-SAR System

TU1208 Open Database of Radargrams: The Dataset of the IFSTTAR Geophysical Test Site

Reconstructing the Roman Site “Aquis Querquennis” (Bande, Spain) from GPR, T-LiDAR and IRT Data Fusion

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