Searched for: subject%3A%22Ground%255C%2Bpenetrating%255C%2Bradars%22
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Ruiz-Armenteros, A.M. (author), Lazecky, M. (author), Hlavacova, I. (author), BakoAaˆ, M. (author), manuel Delgado, J. (author), Sousa, J.J. (author), Lamas-Fernandez, F. (author), Marchamalo, M. (author), Caro-Cuenca, M. (author), Papco, J. (author), Perissin, D. (author)
Dams require continuous security and monitoring programs, integrated with visual inspection and testing in dam surveillance programs. New approaches for dam monitoring focus on multi-sensor integration, taking into account emerging technologies such as GNSS, optic fiber, TLS, InSAR techniques, GBInSAR, GPR, that can be used as complementary data...
conference paper 2018
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Deiana, D. (author), Nennie, F. (author), Boekema, R.B. (author), van Rossum, W. (author), Monni, S. (author)
N-path filters exploiting switched-series-R-C networks can realize high-Q blocking-tolerant band-pass filters. Moreover, their center frequency is flexibly programmable by a digital clock. Unfortunately, the time variant nature of these circuits also results in unwanted signal folding. This paper proves analytically that folding can be reduced...
conference paper 2017
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Engels, S. (author), Bakker, M.A.J. (author), Bohncke, S.J.P. (author), Cerli, C. (author), Hoek, W.Z. (author), Jansen, B. (author), Peters, T. (author), Renssen, H. (author), Sachse, D. (author), van Aken, J.M. (author), van den Bos, V. (author), van Geel, B. (author), van Oostrom, R. (author), Winkels, T. (author), Wolma, M. (author)
The Uddelermeer is a unique lake for The Netherlands, containing a sediment record that continuously registered environmental and climatic change from the late Pleistocene on to the present. A 15.6-m-long sediment record was retrieved from the deepest part of the sedimentary basin and an age–depth model was developed using radiocarbon dating,...
article 2016
document
Deiana, D. (author), Nennie, F. (author), Monni, S. (author)
A novel leaky wave antenna with ultrawide band radiation and high fidelity (low dispersivity) is presented. The suitability of this antenna for a hand-held GPR is evaluated through measurements in a quasi-monostatic setup of an antipersonnel mine and an anti-tank IED-like object buried in dry sand. © 2015 IEEE.
conference paper 2015
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Vaddagiri, K. (author), Monni, S. (author), Neto, A. (author), Nennie, F. (author), van Rossum, W. (author)
This paper presents a novel ultra wide band (UWB) leaky slot antenna. The antenna has a wide impedance bandwidth from 3 to 14 GHz and it is suitable for radar applications requiring high resolution, phase center stability and good pulse preservation, such as medical imaging and ground penetrating radar. © 2013 EurAAP.
conference paper 2013
document
Miorali, M. (author), Slob, E.C. (author), Arts, R.J. (author)
In this paper we present laboratory experiments where we address the Ground Penetrating Radar (GPR) capability of monitoring oil displacement processes in porous media. This has significant applications in near-subsurface environments where remediation of contaminant such as oil-derived liquids is considered one of the major technical,...
conference paper 2011
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TNO Defensie en Veiligheid (author), Deiana, D. (author), Anitori, L. (author)
In this paper we present some results on detection and classification of low metal content anti personnel (AP) landmines using a modified version of the Auto Regressive (AR) modeling algorithm presented in [1,2]. A statistical distance is computed between the AR coefficients of the measured GPR time signal and the AR coefficients of a reference...
conference paper 2010
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Arts, R.J. (author), Baradello, L. (author), Girard, J.F. (author), Kirby, G. (author), Lombardi, S. (author), Williamson, P. (author), Zaja, A. (author), TNO Bouw en Ondergrond (author)
CO2 storage in the subsurface is becoming more and more attractive as a means to reduce CO2 emissions to the atmosphere and hence minimize human-induced global warming. The ability to monitor and verify these CO2 storage reservoirs is a key element for further implementation of other storage sites. Since the current sites fortunately do not...
article 2009
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Lambot, S. (author), Slob, E. (author), Rhebergen, J.B. (author), Lopera, O. (author), Jadoon, K.Z. (author), Vereecken, H. (author), TNO Defensie en Veiligheid (author)
We used integrated hydrogeophysical inversion of time-lapse, proximal ground penetrating radar (GPR) data to remotely infer the unsaturated soil hydraulic properties of a laboratory sand during an infiltration event. The inversion procedure involved full-waveform modeling of the radar signal and one-dimensional, vertical flow modeling. We...
article 2009
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Lidicky, L. (author), TNO Defensie en Veiligheid (author), IEEE (author)
The purpose of this paper is to propose a new way to detect victims buried in or under layers of rubble or debris in case of disasters such as earthquakes, fires or terrorist attacks. The method is based on Fourier Processing and Principal Component Analysis (PCA). It utilizes a moving array of sensors arranged in the line of motion. It combines...
conference paper 2008
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TNO Bouw en Ondergrond (author), Bakker, M.A.J. (author), Maljers, D. (author), Weerts, H.J.T. (author)
Management of the Dutch embanked floodplains is of crucial interest in the light of a likely increase of extreme floods. One of the issues is a gradual decrease of floodwater accommodation space as a result of overbank deposition of mud and sand during floods. To address this issue, sediment deposits of an undisturbed embanked floodplain near...
article 2007
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TNO Defensie en Veiligheid (author), Ranada Shaw, A. (author), Gorriti, A. (author), Schoolderman, A.J. (author), Rhebergen, J.B. (author)
In this paper results are presented of a study on the performance of a dual-sensor landmine detector and its dependency on soil moisture. The detector was used on a trial site in the K5 mine belt in Cambodia. Soil samples were taken from the trial lane, as well as GPR measurements. The data obtained from these soil samples and field measurements...
conference paper 2006
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Kovalenko, V. (author), Yarovoy, A. (author), Ligthart, L.P. (author), Hakkaart, P. (author), Rhebergen, J.B. (author), TNO Defensie en Veiligheid (author)
The results of the measurement campaign held during the autumn of 2004 in a sand pit located at the TNO-DS&S (formerly known as TNO Physics and Electronics Laboratory (FEL)) GPR test facility "Waalsdorp" in The Hague, The Netherlands, are presented. Some contamination of the sand in the pit with small scatterers (e.g. sea shells) comparable in...
conference paper 2005
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TNO Defensie en Veiligheid (author), Rhebergen, J.B. (author), Ralston, J.M. (author)
With the emergence of commercially available multisensor mine detection systems, the need for standardised test and evaluation procedures becomes more pressing. For metal detectors this already has been established and is laid down in the CEN workshop document CWA14747:2003 [1]. The ITEP multisensor working group has taken the first step towards...
conference paper 2005
document
Rhebergen, J.B. (author), van Wijk, R. (author)
During the past couple of years, several GPR data sets have been acquired at the TNO-FEL test-site "Waalsdorp". Simultaneously a detection algorithm, based on autoregressive modelling has been developed and implemented. This algorithm first determines a measure of the information content of data from known mine locations, by means of minimum...
conference paper 2004
document
TNO Fysisch en Elektronisch Laboratorium (author), Rhebergen, J.B. (author), Lensen, H.A. (author), van Wijk, C.V. (author), Hendrickx, J.M.H. (author), van Dam, R. (author), Borchers, B. (author)
In previous work we have shown that GPR signatures are affected by soil texture and soil water content. In this contribution we will use a three dimensional electromagnetic model and a hydrological soil model to explore in more detail the relationships between GPR signatures, soil physical conditions and GPR detection performance. First, we will...
conference paper 2004
document
Buynevich, I.V. (author), Fitzgerald, D.M. (author), van Heteren, S. (author)
Coastal-morphological, geophysical (ground-penetrating radar [GPR]), and sedimentological data document extreme storm events along the sandy barriers of Maine's south-central (Hunnewell and Flat Point barriers) and southwestern (Saco Bay barriers) coastal compartments. The Hunnewell barrier contains four equally spaced buried storm scarps behind...
article 2004
document
Milisavljević, N. (author), Bloch, I. (author), van den Broek, S.P. (author), Acheroy, M. (author), TNO Fysisch en Elektronisch Laboratorium (author)
A methodfor modeling andcombination of measures extractedfrom a ground-penetrating radar (GPR) in terms of belief functions within the Dempster-Shafer framework is presentedandillustratedon a real GPR data set. A starting point in the analysis is a preprocessed C-scan of a sand-lane containing some mines andfalse alarms. In order to improve the...
article 2003
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Hendrickx, J.M.H. (author), Hong, S.H. (author), Miller, T. (author), Borchers, B. (author), Rhebergen, J.B. (author), TNO Fysisch en Elektronisch Laboratorium (author)
Landmines are a major problem in many areas of the world. In spite of the fact that many different types of landmine sensors have been developed, the detection of non-metallic landmines remains very difficult. The objective of this contribution is to synthesize our work related to the effects of soil texture and soil water content on the...
bookPart 2003
document
Cremer, F. (author), de Jong, W. (author), Schutte, K. (author), TNO Fysisch en Elektronisch Laboratorium (author)
Currently no single sensor reaches the performance requirements for humanitarian landmine detection, Using sensor-fusion methods, multiple sensors can be combined for improved detection performance. This paper focuses on the feature-level fusion procedure for a sensor combination consisting of a polarimetric infrared imaging sensor developed by...
conference paper 2003
Searched for: subject%3A%22Ground%255C%2Bpenetrating%255C%2Bradars%22
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