Now showing items 1-20 of 127

  • 3D Face recognition with stereo automotive cameras 

    Tura Vecino, Biel (Universitat Politècnica de Catalunya, 2019-06)
    Bachelor thesis
    60 months embargo
    The automotive sector is experiencing a rapid change that will influence the way in which we will use cars. One of the main concerns of this new wave of automotive research regards the security of future vehicles, being ...
  • A calibration method for fully polarimetric microwave radiometers 

    Lahtinen, J..; Gasiewski, A.J.; Klein, M.; Corbella Sanahuja, Ignasi (IEEE Press. Institute of Electrical and Electronics Engineers, 2003-03)
    Article
    Open Access
    A technique for absolute end-to-end calibration of a fully polarimetric microwave radiometer is presented. The technique is based on the tripolarimetric calibration technique of Gasiewski and Kunkee, but is extended to ...
  • A general analysis of error in noise measurement systems 

    Pradell i Cara, Lluís; Comerón Tejero, Adolfo; Ramírez González, Alejandro (Institute of Electrical and Electronics Engineers (IEEE), 1988)
    Conference report
    Open Access
    General and approximated expressions are presented which allow the identification and quantification of errors in noise figure measurements that use the Y-factor method. This formulation is a generalization of that in /2/ ...
  • Algorithms and tools for the automatic scanning of mid-complexity 3D objects 

    Carruesco Llorens, Àlex (Universitat Politècnica de Catalunya, 2016-07-04)
    Master thesis
    Open Access
    We designed and implemented an automatic 3D scanning system for acquiring 3D models from mid-complexity objects. The system includes the acquisition of the data, the processing steps, and the mesh reconstruction. We also ...
  • A method for accurate zero calibration of asymmetric jaws in single-isocenter half-beam techniques 

    Hernandez Espinosa, Victor; Sempau Roma, Josep; Abella, R.; Romero Lopez, Matilde; Lopez Perez, Marcedes; Artigues, Manel; Arenas, M. (2013-02)
    Article
    Restricted access - publisher's policy
    Purpose: To present a practical method for calibrating the zero position of asymmetric jaws that provides higher accuracy at the central axis and improves dose homogeneity in the abutting region of half-beams. Methods: ...
  • A multistate single-connection calibration for microwave microfluidics 

    Orloff, Nathan D.; Ma, Xiao; Little, Charles A. E.; Mateu Mateu, Jordi (IEEE Microwave Theory and Techniques Society, 2017-10-12)
    Article
    Open Access
    With emerging medical, chemical, and biological applications of microwave-microfluidic devices, many researchers desire a fast and accurate calibration that can be achieved in a single connection. However, traditional ...
  • Analisys of noise injection networks for interferometric radiometer calibration 

    Corbella Sanahuja, Ignasi; Camps Carmona, Adriano José; Torres Torres, Francisco; Bará Temes, Francisco Javier (IEEE Microwave Theory and Techniques Society, 2000-04)
    Article
    Open Access
    Abstract: The spatial resolution of current space-borne Earth observation radiometers is limited by the physical antenna aperture. This is especially critical at L-band, which exhibits high sensitivity to soil moisture ...
  • Analisys of noise-injection networks for interferometric-radiometer calibration 

    Corbella Sanahuja, Ignasi; Camps Carmona, Adriano José; Torres Torres, Francisco; Bará Temes, Francisco Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-04-30)
    Article
    Open Access
    The spatial resolution of current space-borne Earth observation radiometers is limited by the physical antenna aperture. This is especially critical at L-band, which exhibits high sensitivity to soil moisture and sea surface ...
  • Analysis of correlation and total power radiometer front-ends using noise waves 

    Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Rautiainen, Kimmo; Martín Neira, Manuel; Colliander, Andreas (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-11-30)
    Article
    Open Access
    A complete and systematic noise analysis of radiometer front-ends, including both total power and correlation measurements, is presented. The procedure uses the concepts of noise waves and S-parameters, widely used in ...
  • Analysis of Correlation and Total Power Radiometer Front-Ends Using Noise Waves 

    Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Rautiainen, Kimmo; Martín Neira, Manuel; Colliander, Andreas (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-11-30)
    Article
    Open Access
    A complete and systematic noise analysis of radiometer front-ends, including both total power and correlation measurements, is presented. The procedure uses the concepts of noise waves and S-parameters, widely used in ...
  • An architecture providing depolarization ratio capability for a multi-wavelength Raman lidar: implementation and first measurements 

    Rodríguez Gómez, Alejandro Antonio; Sicard, Michaël; Granados Muñoz, María José; Ben Chahed, Enis; Muñoz Porcar, Constantino; Barragán Cuesta, Rubén; Comerón Tejero, Adolfo; Rocadenbosch Burillo, Francisco; Vidal, Eric (MDPI AG, 2017-12-20)
    Article
    Open Access
    A new architecture for the measurement of depolarization produced by atmospheric aerosols with a Raman lidar is presented. The system uses two different telescopes: one for depolarization measurements and another for ...
  • A new calibration technique for interferometric radiometers 

    Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Bará Temes, Francisco Javier (1998)
    Conference report
    Open Access
    This paper presents a new method for receiver calibration of interferometric radiometers. It is based on the distributed noise injection mechanism and it consists of fully calibrating the baseline error terms of the central ...
  • Aportaciones para la caracterización de geófonos en un laboratorio de vibración (OBS, vibraciones, sísmica, acoplamiento, incertidumbre) 

    Rodríguez Camarero, David (Universitat Politècnica de Catalunya, 2005-01)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    Los objetivos principales de este proyecto han sido: La conformación de un laboratorio de vibración completamente equipado y plenamente operativo para la medición y calibración de geófonos y acelerómetros. Estudio y ...
  • Automatic calibration of channels frequency response in interferometric radiometers 

    Camps Carmona, Adriano José; Torres Torres, Francisco; Bará Temes, Francisco Javier; Corbella Sanahuja, Ignasi; Monzón Soria, Francisco Jose (IEE-INST ELEC ENG, 1999-01-31)
    Article
    Open Access
    The large field of view required in Earth observation interferometric radiometers does not enable the use of a variable delay to compensate for different transit times, as in radioastronomy. A technique is presented to ...
  • Automotive radar and radome calibration to improve the direction of arrival detection performance 

    Buitrago Ventura, Santiago; Blanch Boris, Sebastián; Romeu Robert, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    An assessment of the improvement in the Direction of Arrival (DoA) measurements in automotive radar sensor by joint calibration of the radar sensor plus the radome is presented. Nowadays, radar sensors are calibrated before ...
  • Benchmarking selection of parameter values for the Barcelona basic model 

    D'Onza, Francesca; Wheeler, S. J.; Gallipoli, Domenico; Hofmann, M.; Lloret Cabot, Marti; Lloret Morancho, Antonio; Mancuso, C.; Pereira, J.M.; Romero Morales, Enrique Edgar; Toll, D. G.; Vassallo, R. (2015-09)
    Article
    Open Access
    Seven teams took part in a benchmarldng exercise on selection of parameter values for the Barcelona Basic Model (BBM) from experimental data on an unsaturated soil. All teams were provided with experimental results from 9 ...
  • Calibratge d'estereotests mitjançant correlació d'imatges digitals 

    Collell Cortacans, Àuria (Universitat Politècnica de Catalunya, 2015-05-21)
    Bachelor thesis
    Open Access
    Objectiu: Realitzar el càlcul del valor de disparitat binocular dels quatre tests d’estereoagudesa clàssics, mitjançant tècniques de processament d’imatges digitals. Contrastar els resultats d’aquest estudi amb els valors ...
  • Calibratges en metrologia 

    Surroca i Torrents, Jordi (Universitat Politècnica de Catalunya, 2007-06)
    Master thesis (pre-Bologna period)
    Open Access
    El plantejament bàsic del projecte és el de crear una eina útil i versàtil per tal d’agilitzar els treballs de calibratge. Un calibratge no deixa de ser una tasca manual que realitza un operari, per tant, es pretén crear ...
  • Calibrating low-cost air quality sensors using multiple arrays of sensors 

    Barceló Ordinas, José María; García Vidal, Jorge; Doudou, Messaoud; Rodrigo Muñoz, Santiago; Cerezo Llavero, Albert (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Open Access
    The remarkable advances in sensing and communication technologies have introduced increasingly low-cost, smart and portable sensors that can be embedded everywhere and play an important role in environmental sensing ...
  • Calibratin of fully polarimetric radiometers: the LAURA radiometer 

    Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Torres Torres, Francisco; Bará Temes, Francisco Javier (2000)
    Conference report
    Open Access