Near-Field Full-Waveform Inversion of Ground-Penetrating Radar Data to Monitor the Water Front in Limestone

Guan, Borui; Ihamouten, Amine; Dérobert, Xavier; Guilbert, David; Lambot, Sébastien; Villain, Géraldine

doi:10.1109/jstars.2017.2743215

Cited by 18 publications

(9 citation statements)

References 36 publications

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“…[GHz] [15] pavement inspection aperture array A 0.2 to 3 [16] generic mimo array A 0.3 to 4 [23] generic horn A 0.8 to 4 [27] dispersive media vivaldi A 0.8 to 3 [36] generic bowtie G 0.2 to 0.6 [37] soil hydraulic spiral, vivaldi and bowtie A 0.8 to 5.2 [38] layered media horn A 0.8 to 2 [39] soil permittivity loaded dipole G 0.5 to 4.5 This type of waveform has a short period of time and a large bandwidth. As can be seen in Table I, it is possible to use various types of antenna with this waveform.…”

Section: Bandwidthmentioning

confidence: 99%

A Review of Ground Penetrating Radar Antenna Design and Optimization

Travassos

Avila²,

Adriano

et al. 2018

J. Microw. Optoelectron. Electromagn. Appl.

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Section: Bandwidthmentioning

confidence: 99%

A Review of Ground Penetrating Radar Antenna Design and Optimization

Travassos

Avila²,

Adriano

et al. 2018

J. Microw. Optoelectron. Electromagn. Appl.

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“…This methodology enables retrieving the electromagnetic (EM) properties of the successive pavement layers (Guan et al . ).…”

Section: Introductionmentioning

confidence: 97%

The use of impulse and stepped‐frequency radar to characterize the hydric behaviour of a porous pavement structure

Dérobert¹,

Ihamouten

Guilbert

et al. 2019

Near Surface Geophysics

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This study focusses on examining the behaviour of an innovative asphalt pavement which is created as a solar energy collector, using non‐destructive testing involving ground‐penetrating radar. The concept of heat exchanger is based on the use of drainage asphalt in the bonding layer through which a heated fluid flows via gravity to de‐ice the roadway. In order to develop hydrothermal models for a test site representing such a pavement, the saturated porous layer assumption was required when the water level in each tank (up‐ and downstream of the structure) was same as the top of the porous layer. Two ground‐penetrating radar techniques were tested at this test site: a ground‐coupled impulse radar and an air‐coupled stepped‐frequency radar. The impulse ground‐penetrating radar, a high‐efficiency non‐destructive testing technique which is widely used in civil engineering, provides accurate geometric information, especially for pavement investigation. In the second innovative approach, air‐coupled stepped‐frequency radar was combined with full‐waveform inversion to obtain quantitative information, while retrieving the electromagnetic properties of the successive pavement layers. We concentrated on the early‐stage water imbibition in the pavement structure using the impulse ground‐penetrating radar to estimate the fluid transfer velocity and both ground‐penetrating radar techniques to verify the saturated porous layer assumption in the steady state. Ground‐coupled radar enabled us to follow the water front and to capture different water‐transfer behaviours in the porous asphalt layer. Our observation could be explained by the vertical topology of the upper watertight interface. Air‐coupled stepped‐frequency ground‐penetrating radar presented similar results to ground‐coupled ground‐penetrating radar but provided a quantitative estimate of the changes within the porous layer during the test.

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“…In the literature, several non-destructive testing techniques using radar and radio-link systems have been reported, in which sensors were either buried/submerged in substances or inside objects or placed at a distance from objects. In [10], a near-field non-destructive testing technique for limestone was presented, in which the radar system was placed close to the limestone to monitor the real and imaginary parts of the permittivity of dry and saturated layers of a limestone-slab. Similarly, free space measurement methods for determining the complex refractive index of woodchips for industrial inline applications were presented in [4], in which radar sensors were placed in the Fresnel zone (or in a far-field region).…”

Section: Introductionmentioning

confidence: 99%

A Non-Destructive Testing Method in Industrial Processes to Determine the Complex Refractive Index Using Ultra-Wide Band Radio

Choudhary¹,

Ottosson

Andersson

et al. 2022

IEEE Sensors J.

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An ultra-wide band measurement method for determining the complex refractive index of large-volume objects is presented. The method is intended for industrial non-destructive testing. It uses a frequency-domain technique in which transmitted radio pulses are analyzed and the effects of near field and coupling on the determined refractive index are compensated. Measurements were performed in an industrial setup with electromagnetic sensors buried in the object. The results are presented for woodchips as an object. The refractive index was experimentally determined in the frequency range 0.5-3.0 GHz. Additionally, we designed and manufactured planar quasi-differential elliptical-antennas as electromagnetic sensors. The results from the industrial measurement setup were compared with the results of the laboratory setup, in which the sensors were placed outside the test box and near field and coupling effects could be neglected. The complex refractive index determined for the two setups was in good agreement, which corroborates the proposed method for compensating for coupling and near-field effects. The complex refractive index of woodchips changes with the moisture content. It is experimental verified using the industrial setup that the moisture content can be determined with a 2 percent error.

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Near-Field Full-Waveform Inversion of Ground-Penetrating Radar Data to Monitor the Water Front in Limestone

Abstract: International audienc

Cited by 18 publications

References 36 publications

A Review of Ground Penetrating Radar Antenna Design and Optimization

A Review of Ground Penetrating Radar Antenna Design and Optimization

The use of impulse and stepped‐frequency radar to characterize the hydric behaviour of a porous pavement structure

A Non-Destructive Testing Method in Industrial Processes to Determine the Complex Refractive Index Using Ultra-Wide Band Radio

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