Ara es mostren els items 1-20 de 218

  • A bluetooth low energy indoor positioning system with channel diversity, weighted trilateration and Kalman filtering 

    Cantón Paterna, Vicente; Calveras Augé, Anna M.; Paradells Aspas, Josep; Perez Bullones, Maria Antonia (Multidisciplinary Digital Publishing Institute (MDPI), 2017-12-01)
    Article
    Accés obert
    Indoor Positioning Systems (IPS) using Bluetooth Low Energy (BLE) technology are currently becoming real and available, which has made them grow in popularity and use. However, there are still plenty of challenges related ...
  • Accuracy assessment of SAR interferometry using the ERS-1 

    Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1995)
    Text en actes de congrés
    Accés obert
    A SAR raw data simulator and a SAR processor are used as a tool for performance assessment of SAR interferometry algorithms like the multi-baseline and multifrequency. Traditional algorithms have also been tested with real ...
  • Accurate numerical modeling of the TARA reflector system 

    Heldring, Alexander; Rius Casals, Juan Manuel; Ligthart, Leo P.; Cardama Aznar, Ángel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2004-07-31)
    Article
    Accés obert
    The radiation pattern of the large parabolic reflectors of the Transportable Atmospheric RAdar system (TARA), developed at Delft University of Technology, has been accurately simulated. The electric field integral ...
  • A comparative study of operational vessel detectors for maritime surveillance using satellite-borne synthetic aperture radar 

    Stasolla, Mattia; Mallorquí Franquet, Jordi Joan; Margarit, Gerard; Santamaría, Carlos; Walker, Nick (2016-06-01)
    Article
    Accés obert
    This paper presents a comparative study among four operational detectors that work by automatically post-processing synthetic aperture radar (SAR) images acquired from the satellite platforms RADARSAT-2 and COSMO-SkyMed. ...
  • A dual-mode Ultra-Wideband wireless platform for remote patient monitoring systems 

    Bisbe Novoa, Sergi; Reyes Navarro, Carlos Alberto (Universitat Politècnica de Catalunya, 2012-07-11)
    Projecte Final de Màster Oficial
    Accés obert
    The combination of two factors demands the need to find a solution that guarantees the well-being of the people suffering from chronic diseases. On the one hand, the increase of the life expectancy leads to an older world's ...
  • Advanced radar geosynchronous observation system: ARGOS 

    Monti Guarnieri, Andrea; Broquetas Ibars, Antoni; Recchia, Andrea; Rocca, Fabio; Ruiz Rodon, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2015-07-01)
    Article
    Accés obert
    The Advanced Radar Geosynchronous Observation System is proposed to be a multiple-input–multiple-output synthetic aperture radar (SAR) system hosted on a swarm of minisatellites in quasi-geostationary orbits. The system ...
  • Algoritmo interferométrico para un sistema radar de apertura sintética circular de corto alcance 

    Sagués Piella, Lluís; Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni (1997)
    Text en actes de congrés
    Accés obert
    This paper presents an interferometric algorithm capable of working with SAR images obtained from measurements carried out with antennas that describe a circular trajectory. The antennas are positioned on a vertical mast ...
  • Anàlisi SAR per missions de rescat utilitzant vehicles aeris no tripulats 

    Gallego Jiménez, Francisco Javier (Universitat Politècnica de Catalunya, 2016-10)
    Projecte/Treball Final de Carrera
    48 months embargo
  • Análisis de antenas de reflector mediante procesado gráfico 

    Vall-Llossera Ferran, Mercedes Magdalena; Salazar, C; Rius Casals, Juan Manuel; Cardama Aznar, Ángel (Universidad de Valladolid, 1995)
    Text en actes de congrés
    Accés obert
    The aim of this article is to show a new technique for calculating the Radiation Pattern of arbitrary geometry reflector antennas. We use the Graphical processing technique developed in this group for Radar Cross Section ...
  • Análisis de técnicas incoherentes para la detección de movimientos del terreno con imágenes SAR 

    Pastó Bota, Anna Rosa (Universitat Politècnica de Catalunya, 2012-04-23)
    Projecte/Treball Final de Carrera
    Accés restringit per decisió de l'autor
    [ANGLÈS] The SAR (Synthetic Aperture Radar) system delivers high resolution images of Earth's surface. This project aim is to detect and measure ground motions from two incoherent techniques, i.e. those techniques developed ...
  • Analisis y caracterización de un detector radar en entornos interferentes con estadistica Weibull coherente 

    Fernández de Muniain Comajuncosa, Javier; Elias Fusté, Antonio (1991)
    Text en actes de congrés
    Accés obert
    The paper deals wilh the problem of radar delection of a target echo embedded in Weibull cluner and while gaussian noise. To derive a suitable processing scheme, the paper resons lo the general theory of radar delection ...
  • Análisis y estudio del radar Ramet AD9 

    López Jiménez, José Manuel (Universitat Politècnica de Catalunya, 2009-07-08)
    Projecte/Treball Final de Carrera
    Accés obert
    El proyecto está basado en un estudio completo y detallado del radar RAMET modelo AD9. Las autoridades de tráfico catalanas, a través del Servei Català del Trànsit, están introduciendo en nuestras carreteras este tipo ...
  • Analysis and design of an interferometer for geostationary synthetic aperture radars orbit determination 

    Grimaldo Sánchez, Germán Angel (Universitat Politècnica de Catalunya, 2015-07)
    Projecte/Treball Final de Carrera
    Accés obert
    The industry of remote sensing has nowadays strongly developed systems, which are versatile and adaptable, however they are not optimal for certain applications. With more than enough reason from it, a new technology of ...
  • Analysis and reduction of the distortions induced by time-domain filtering techniques in network analyzers 

    Porrata-Dòria i Yagüe, Ramir de; Broquetas Ibars, Antoni; Martínez, Luís Fernando (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-08-31)
    Article
    Accés obert
    The removal of isolation errors plays an essential role in the calibration process of radar scattering measurements. One of the most common techniques used for that purpose is time-domain filtering, also known as gating. ...
  • Analysis, design and implementation of a compact interferometer for geostationary orbital tracking 

    Martin Fuster, Roger (Universitat Politècnica de Catalunya, 2016-05-11)
    Projecte/Treball Final de Carrera
    Accés restringit per decisió de l'autor
    Future geostationary radar systems will require the satellite orbit modeling with precisions in the order of the radar wavelength. Using interferometric techniques it is possible to determine satellite angular observables ...
  • Analysis of denoising algorithms for Polarimetric SAR data: the cases of the Bilateral and the Non Local Means filters 

    Martinez Del Hoyo Guri, Antonio (Universitat Politècnica de Catalunya, 2014-09-12)
    Projecte/Treball Final de Carrera
    Accés obert
    Realitzat a/amb:  Technische Universität Berlin
    [ANGLÈS] The aim of this thesis is to do an in-depth analysis of state-of-the-art denoising methods for Polarimetric SAR data and to propose a new algorithm taking advantage on their strong points. The filters under analysis ...
  • Analysis of energetic radiation associated with thunderstorms in the Ebro delta region in Spain 

    Fabró Tàpia, Ferran; Montañá Puig, Juan; Pineda Rüegg, Nicolau; Argemí Ribera, Oriol; Van der Velde, Oscar Arnoud; Romero Durán, David; Soula, Serge (2016-08-25)
    Article
    Accés obert
    The analysis of high-energy background radiation (0.1 – 2 MeV) enhancements during eight winter thunderstorms and ¿ve summer storms in the Ebro delta region in the northeast of Spain is presented. For the ¿rst time, ...
  • Analysis of wind turbines blockage on doppler weather radar beams 

    Belmonte Molina, Aniceto; Fabregas Canovas, Francisco Javier (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-07-01)
    Article
    Accés obert
  • A near field 3D radar imaging technique 

    Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1993)
    Text en actes de congrés
    Accés obert
    The paper presents an algorithm which recovers a 3D reflectivity image of a target from near-field scattering measurements. Spherical wave nearfield illumination is used, in order to avoid a costly compact range installation ...
  • A near field spherical wave inverse synthetic aperture radar technique 

    Broquetas Ibars, Antoni; Jofre Roca, Lluís; Cardama Aznar, Ángel (Institute of Electrical and Electronics Engineers (IEEE), 1992)
    Text en actes de congrés
    Accés obert
    The authors present an imaging near-field spherical wave inverse synthetic aperture radar (SWISAR) algorithm based on a focusing operator of the scattered fields on the target surface. A spherical wave can be easily generated ...