Ground-coupled antenna array for step-frequency GPR

Eide, Egil; Valand, P.A.; Sala, Jacopo

doi:10.1109/icgpr.2014.6970527

Cited by 21 publications

(15 citation statements)

References 4 publications

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“…A typical technique to increase penetration employed in GPR surveys is the reduction of the operating frequency: this implies lower resolution [1]. An alternative approach, where applicable, requires the employment of ground-coupled antennas [2]. Those antennas increase the coupling with the soil avoiding the first reflection at the interface between air and soil and potentially reducing the speed of a survey.…”

Section: Introductionmentioning

confidence: 99%

Analytical Investigation on a New Approach for Achieving Deep Penetration in a Lossy Medium: The Lossy Prism

Frezza

Simeoni²,

Tedeschi³

2017

JTIT

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Abstract-Recent studies highlighted deep-penetration properties of inhomogeneous waves at the interface between a lossless and a lossy medium. Such waves can be generated by means of radiating structures known as Leaky-Wave Antennas (LWAs). Here, a different approach is proposed based on the use of a lossy prism capable to generate an inhomogeneous wave when illuminated by a homogeneous wave. The lossy prism is conceived and designed thinking of GroundPenetrating Radar (GPR). The results achieved by the lossy prism will be compared with those obtained by means of a previously designed LWA that was created with the identical objective. The approach of this paper is purely theoretical, and it aims at providing basic ideas and preliminary results useful for an innovative LWA design.

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Section: Introductionmentioning

confidence: 99%

Analytical Investigation on a New Approach for Achieving Deep Penetration in a Lossy Medium: The Lossy Prism

Frezza

Simeoni²,

Tedeschi³

2017

JTIT

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“…COST Action TU1208 was running from April 2013 to October 2017 [4,5]. It involved more than 300 experts from 150 partner institutes in 28 COST countries (Austria, Belgium, Croatia, Czech Republic, Denmark, Estonia, Finland, France, former Yugoslav Republic of Macedonia, Germany, Greece, Ireland, Italy, Latvia, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, and the United Kingdom), a COST cooperating state (Israel), 6 COST near neighboring countries (Albania, Armenia, Egypt, Jordan, Russia, Ukraine) and 6 COST international partner countries (Australia, Colombia, Hong Kong, The Philippines, Rwanda, the United States). University researchers, software developers, civil and electronic engineers, archaeologists, geophysics experts, non-destructive testing equipment designers and manufacturers, end-users from private companies and public agencies participated in the Action.…”

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 second assumption is a standard accepted approach for safety reasons. However, a lot of emitted energy is reflected back because the antenna is suspended above the surface and the coupling process efficiency is lower [29], [30] [31]. Figure 3 provides an example of the energy and resolution losses experienced by elevating the antenna of few centimetres above the surface.…”

Section: Target and Acquisition Descriptionmentioning

confidence: 99%

Bistatic radar signature of buried landmines

Lombardi

Griffiths

Balleri

2017

International Conference on Radar Systems (Radar 2017)

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With the proliferation of low-intensity conflict, landmines have proven to be one of the weapons of choice for both government and guerrilla forces around the world. Recent improvements to mine technology pose increasingly significant problems for demining operations, requiring the constant upgrading of countermine technologies. Ground Penetrating Radar (GPR) is one of the most exhaustively researched topics in the detection of buried mines as it can be used to detect non-metallic and plastic mines. However, identification and recognition are still unsolved problems, due to the scattering similarity between mines and clutter objects. This study provides an experimental evaluation of the improvements that a bistatic approach could yield and what can be gained from investigating the angular dependencies of the landmine radar signature.

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Ground-coupled antenna array for step-frequency GPR

Cited by 21 publications

References 4 publications

Analytical Investigation on a New Approach for Achieving Deep Penetration in a Lossy Medium: The Lossy Prism

Analytical Investigation on a New Approach for Achieving Deep Penetration in a Lossy Medium: The Lossy Prism

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

Bistatic radar signature of buried landmines

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