- document
- TNO Fysisch en Elektronisch Laboratorium (author), Rhebergen, J.B. (author), Lensen, H.A. (author), Schwering, P.B.W. (author), Marin, G.R. (author), Hendrickx, J.M.H. (author) conference paper 2002
- document
-
Schutte, K. (author), Cremer, F. (author), den Breejen, E. (author), Schavemaker, J.G.M. (author), Benoist, K.W. (author), TNO Fysisch en Elektronisch Laboratorium (author)Detection of Anti-Personnel Landmines is a challenging task for any sensor currently available. Using sensor fusion allows combining individual sensor results such that for each sensor its advantages remain while compensating for its disadvantages by using other sensor types. This paper provides an overview of sensor-fusion results obtained...conference paper 2001
- document
-
TNO Fysisch en Elektronisch Laboratorium (author), Lensen, H.A. (author), Schwering, P.B.W. (author), Marín, G.R. (author), Hendrickx, J.M.H. (author)Soil water content, dielectric constant, electrical conductivity, thermal conductivity and heat capacity affect the performance of many sensors (e.g. GPR, TIR) and therefore the detection of landmines. The most important of these is water content since it directly influences the other properties. We measure soil water distribution around an...conference paper 2001
- document
-
TNO Fysisch en Elektronisch Laboratorium (author), Schwering, P.B.W. (author), Kokonozi, A. (author), Carter, L.J. (author), Lensen, H.A. (author), Franken, E.M. (author)Infrared imagers are capable of the detection of surface laid mines. Several sensor fused land mine detection systems make use of metal detectors, ground penetrating radar and infrared imagers. Infrared detection systems are sensitive to apparent temperature contrasts and their detection capabilities are inversely proportional to the amount of...conference paper 2001
- document
-
TNO Fysisch en Elektronisch Laboratorium (author), Schavemaker, J.G.M. (author), den Breejen, E. (author), Cremer, F. (author), Schutte, K. (author), Benoist, K.W. (author)In this paper we introduce the concept of depth fusion for anti-personnel landmine detection. Depth fusion is an extension of common sensor-fusion techniques for landmine detection. The difference lies within the fact that fusion of sensor data is performed in different physical depth layers. In order to do so, it requires a sensor that provides...conference paper 2001
- document
-
Sartorelli, P. (author), Andersen, H.R. (author), Angerer, J. (author), Corish, J. (author), Drexler, H. (author), Göen, T. (author), Griffin, P. (author), Hotchkiss, S.A.M. (author), Larese, F. (author), Montomoli, L. (author), Perkins, J. (author), Schmelz, M. (author), van de Sandt, J. (author), Williams, F. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)During the last few years the general interest in the percutaneous absorption of chemicals has increased. It is generally accepted that there is very few reliable quantitative and qualitative data on dermal exposure to chemicals in the general population and in occupationally exposed workers. In order to predict the systemic risk of dermally...article 2000
- document
-
TNO Fysisch en Elektronisch Laboratorium (author), Schavemaker, J.G.M. (author), Cremer, F. (author), Schutte, K. (author), den Breejen, E. (author)In this paper we present the results of infrared processing and sensor fusion obtained within the European research project GEODE (Ground Explosive Ordnance DEtection) that strives for the realization of a vehicle-mounted, multi-sensor anti-personnel land-mine detection system for humanitarian demining. The system has three sensor types: an...conference paper 2000
- document
- LoVetri, J. (author), Primak, S. (author), van Leersum, B.J.A.M. (author), Zwamborn, A.P.M. (author), TNO Fysisch en Elektronisch Laboratorium (author) conference paper 1999
- document
-
van den Berghe, J. (author), van Overmeeren, R.A. (author), Nederlands Instituut voor Toegepaste Geowetenschappen TNO (author)Ground penetrating radar (GPR) surveys have been carried out in order to characterise reflection patterns and to assess the method's potential for imaging palaeofluvial sediments in the Mass-Rhine former confluence area in the southern Netherlands. The results show that the deposits of meandering, braided and transitional river types produce...article 1999
- document
-
Centraal Instituut voor Voedingsonderzoek TNO TNO Voeding (author), Benford, D.J. (author), Cocker, J. (author), Sartorelli, P. (author), Schneider, T. (author), van Hemmen, J. (author), Firth, J.G. (author)To evaluate risk from dermal exposure, the amount of material on the skin must first be measured. The potential for dermal uptake must then be assessed for the potential health effects from systemic exposure. No standard methods exist for studying these processes, and published data are not comparable because of the different techniques used....article 1999
- document
- Veraar, R.G. (author), Elands, P.J.M. (author), TNO Prins Maurits Laboratorium (author) conference paper 1998
- document
-
van Overmeeren, R.A. (author), Nederlands Instituut voor Toegepaste Geowetenschappen TNO (author)Since 1990, The Netherlands Institute of Applied Geoscience TNO has been carrying out ground penetrating radar (GPR) measurements to assess the potential for imaging and characterising different hydrogeological targets in more than 30 pilot areas in The Netherlands. The experience gained by processing this large amount of radar data has enabled...article 1998
- document
-
Cremer, F. (author), den Breejen, E. (author), Schutte, K. (author), TNO Fysisch en Elektronisch Laboratorium (author)In this paper four different sensor data fusion options for the detection of anti personnel land-mines are presented. The performance of options are evaluated in a simulated case study with estimated frgures for mines and possible fals alarm generating objects. The Dempster-Shafer implementation with best mapping for masses and uncertainty, and...conference paper 1998
- document
-
Rhebergen, J.B. (author), Zwamborn, A.P.M. (author), Giri, D.V. (author), TNO Fysisch en Elektronisch Laboratorium (author)At TNO-FEL, one of the research programs is to explore the use of ultra-wideband (UWB) electromagnetic fields in a bi-static ground-penetrating radar (GPR) system for the detection, location and identification of buried items of unexploded ordnance (e.g. land mines). In the present paper we describe the current status of the development of this...conference paper 1998
- document
-
TNO Bouw (author), Siemes, T. (author), Polder, R. (author), de Vries, H. (author)To design concrete structures for durability, all relevant performances that the structure has to fulfill and that can be influenced by degradations have to be defined. The probability that a given performance must be delivered within a design service life should also be considered. One of the consequences of the required reliability in the...article 1998
- document
- TNO Fysisch en Elektronisch Laboratorium (author), LoVetri, J. (author), Simons, N.R.S. (author), van Leersum, B.J.A.M. (author) conference paper 1998
- document
-
van Overmeeren, R.A. (author), Sariowan, S.V. (author), Gehrels, J.C. (author), Nederlands Instituut voor Toegepaste Geowetenschappen TNO (author)Ground penetrating radar (GPR) can provide information on the soil water content of the unsaturated zone in sandy deposits via measurements from the surface, and so avoids drilling. Proof of this was found from measurements of radar wave velocities carried out ten times over 13 months at two test sites in the Netherlands. At these same locations...article 1997
- document
-
de Vries, J. (author), Polder, R.B. (author)As part of the maintenance policy of the Dutch Ministry of Transport, Civil Engineering Division, hydrophobic treatment of concrete was considered as an additional protective measure against penetration of aggressive substances, for instance deicing salts in bridge decks. A set of tests was designed to determine the performance of commercially...article 1996
- document
-
Stolwijk, N.H.M. (author), Zijl, W. (author), Boekelman, R. (author), Nederlands Instituut voor Toegepaste Geowetenschappen TNO (author)In this paper, we present a method that may lead to a better quantitative insight into the relation between the size (horizontal dimensions) of a natural groundwater flow modelling area and the schematization required for a numerical model. The method is based on a decomposition of the spatial variability of the groundwater table into a Fourier...article 1996
- document
-
de Lange, J. (author), van Eck, P. (author), Elliott, G.R. (author), de Kort, W.L.A.M. (author), Wolthuis, O.L. (author), Medisch Biologisch Laboratorium TNO (author)To overcome most of the disadvantages of current models to investigate percutaneous penetration of drugs or toxic substances, a model is proposed here based on the isolated pig ear, which is obtained at the slaughterhouse, and perfused with oxygenated blood from the same pig. To determine the viability of the preparations, we measured glucose...article 1992