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Xu, T. (author), Tang, Z. (author), Lu, H. (author), van Leuken, R. (author)Mobile OFDM refers to OFDM systems with fast moving transceivers, contrastive to traditional OFDM systems whose transceivers are stationary or have a low velocity. In this paper, we use Basis Expansion Models (BEM) to model the time-variation of channels, based on which two least-squares (LS) channel estimators are presented. The first channel...conference paper 2012
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Teerhuis, A.P. (author), Jansen, S.T.H. (author)The motorcycle lean (or roll) angle development is one of the main characteristics of motorcycle lateral dynamics. Control of motorcycle motions requires an accurate assessment of this quantity and for safety applications also the risk of sliding needs to be considered. Direct measurement of the roll angle and tyre slip is not available;...article 2012
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Hanea, A. (author), Hanea, R. (author), Zilko, A. (author)The objective of reservoir engineering is to optimize hydrocarbon recovery. One of the most common and efficient recovery processes is water injection. The water is pumped into the reservoir in injection wells in order to push the oil trapped in the porous media towards the production wells. The movement of the water front depends on the...conference paper 2012
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- Sijs, J. (author) doctoral thesis 2012
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Bouma, H. (author), Dijk, J. (author), van Eekeren, A.W.M. (author)Blur estimation is an important technique for super resolution, image restoration, turbulence mitigation, deblurring and autofocus. Low-cost methods have been proposed for blur estimation. However, they can have large stochastic errors when computed close to the edge location and biased estimates at other locations. In this paper, we define an...conference paper 2012
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Andrei, R.M. (author), Smith, C.S. (author), Fraanje, P.R. (author), Verhaegen, M. (author), Korkiakoski, V.A. (author), Keller, C.U. (author), Doelman, N.J. (author)In this paper we give a new wavefront estimation technique that overcomes the main disadvantages of the phase diversity (PD) algorithms, namely the large computational complexity and the fact that the solutions can get stuck in a local minima. Our approach gives a good starting point for an iterative algorithm based on solving a linear system,...conference paper 2012
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Meisner, J.A. (author), Jaffe, W.J. (author), le Poole, R.S. (author)The NOVA Fringe Tracker (NFT) is a proposed solution tóthe call by ESO for a second generation fringe tracking facility. This instrument at the VLTI will enable the cophasing of up tó6 telescopes simultaneously. Using broad band optics with detection from 1.2 tó2.4 microns, a unique configuration is employed that eliminates so-called ...conference paper 2012
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TNO Kwaliteit van Leven (author), Atuonwu, J.C. (author), van Straten, G. (author), van Deventer, H.C. (author), van Boxtel, A.J.B. (author)This work studies the controllability of heat-integrated zeolite adsorption dryers. Mean product moisture content, temperature and vitamin C concentration (representative of product quality) are considered as controlled variables. Set-point tracking and disturbance rejection controllability metrics are considered in addition to energy...article 2012
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van Maanen, P.P. (author), Wisse, F. (author), van Diggelen, J. (author), Beun, R.J. (author)Problems with estimating trust in information sources are common in time constraining and ambiguous situations and often lead to a decrease of team performance. Humans lack the resources to track the integrity of information and thus tend to over- or under-rely on advice from support systems. Two types of adaptive team support have been...conference paper 2011
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van Nunen, E. (author), van den Broek, T.H.A. (author), van Wolferen, J. (author)In this paper, a collision warning application is described. The collision warning application is in particular useful when the driver’s view is blocked due to a large vehicle. The risk estimation algorithm, which is originally designed and validated in scenarios with vulnerable road users, is here applied in a non-line-of-sight scenario with...conference paper 2011
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Kessels, J.T.B.A. (author), Rosca, B. (author), Bergveld, H.J. (author), van den Bosch, P.P.J. (author)Hybrid and electric vehicles require accurate knowledge of the battery to make an educated guess about the expected electric driving range. Range prediction is complicated by the fact that batteries are subject to external influences and aging. Also the future driving behavior is often unknown. This paper presents a model-based identification...conference paper 2011
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Tang, Z. (author), Blacquière, G. (author), Leus, G. (author)Sparse signal representation (SSR) is considered to be an appealing alternative to classical beamforming for direction-of-arrival (DOA) estimation. For wideband signals, the SSR-based approach constructs steering matrices, referred to as dictionaries in this paper, corresponding to different frequency components of the target signal. However,...article 2011
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Leeuwenburgh, O. (author), Peters, E. (author), Wilschut, F. (author)A history matching workflow, as typically used for updating of petrophysical reservoir model properties, is modified to include structural parameters including the top reservoir and several fault properties: position, slope, throw and transmissibility. A simple 2D synthetic oil reservoir produced by waterflooding is used to demonstrate issues...conference paper 2011
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Granier, C. (author), Bessagnet, B. (author), Bond, T. (author), D'Angiola, A. (author), van der Gon, H.D. (author), Frost, G.J. (author), Heil, A. (author), Kaiser, J.W. (author), Kinne, S. (author), Klimont, Z. (author), Kloster, S. (author), Lamarque, J.-F. (author), Liousse, C. (author), Masui, T. (author), Meleux, F. (author), Mieville, A. (author), Ohara, T. (author), Raut, J.-C. (author), Riahi, K. (author), Schultz, M.G. (author), Smith, S.J. (author), Thompson, A. (author), van Aardenne, J. (author), van der Werf, G.R. (author), van Vuuren, D.P. (author)Several different inventories of global and regional anthropogenic and biomass burning emissions are assessed for the 1980-2010 period. The species considered in this study are carbon monoxide, nitrogen oxides, sulfur dioxide and black carbon. The inventories considered include the ACCMIP historical emissions developed in support of the...article 2011
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Whiting, P.A. (author), Kramer, G. (author), Nuzman, C.J. (author), Ashikhmin, A. (author), van Wijngaarden, A.J. (author), Živković, M. (author)Digital subscriber line (DSL) data rates for short loops are typically limited by crosstalk between adjacent lines rather than by background noise. Precoding can reduce crosstalk in the downstream from the access node to the customer premises equipment significantly if an accurate estimate of the inverse crosstalk channel is provided. Recently,...article 2011
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Peters, E. (author), Wilschut, F. (author), Leeuwenburgh, O. (author), van Hooff, P.M.E. (author)Increasingly computer assisted techniques are used for history matching reservoir models. Such methods will become indispensable in view of the increasing amount of information generated by intelligent wells, in which case manual interpretation becomes too time consuming. Also, with the increasing possibilities for controlling a reservoir, a...conference paper 2011
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Wang, Y. (author), Mangnus, J. (author), Kostić, D. (author), Nijmeijer, H. (author), Jansen, S.T.H. (author)New driver support systems require knowledge of the vehicle position with great accuracy and reliability. Satellite navigation (GNSS) is generally insufficiently accurate for positioning and as an alternative to using a ground station, combinations with high quality motion sensors are used in so-called Inertial Navigation Systems. However the...conference paper 2011
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Sas, B. (author), Spaey, K. (author), Balan, I. (author), Zetterberg, K. (author), Litjens, R. (author)In mobile cellular networks the handover (HO) algorithm is responsible for determining when calls of users that are moving from one cell to another are handed over from the former to the latter. The admission control (AC) algorithm, which is the algorithm that decides whether new (fresh or HO) calls that enter a cell are allowed to the cell or...conference paper 2011
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Krishnan, S. (author), Kerkhoff, H.G. (author)Mahalanobis distance is one of the commonly used multivariate metrics for finely segregating defective devices from non-defective ones. An associated problem with this approach is the estimation of a robust mean and a covariance matrix. In the absence of such robust estimates, especially in the presence of outliers to test-response measurements,...conference paper 2011
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Sijs, J. (author), Papp, Z. (author), Booij, P. (author)Centralized state-estimation algorithms, such as the original Kalman filter, are no longer feasible in large scale sensor networks, due to practical limitations on communication bandwidth and spatial distribution of resources. To cope with these limitations, various distributed estimation algorithms have been proposed that estimate the state of...conference paper 2011