Ara es mostren els items 110-129 de 213

  • Geostationary radar orbit determination from radar interferometry 

    Aparicio Aramayo, Oscar Felipe (Universitat Politècnica de Catalunya, 2016-06)
    Treball Final de Grau
    36 months embargo
    Geostationary Synthetic Aperture Radars require a precise orbit modelling to obtain high resolutions images of the Earth. Applying interferometric techniques to single received signal from pairs of ground stations it is ...
  • GNSS-R derived centimetric sea topography: an airborne experiment demonstration 

    Carreño Luengo, Hugo; Hyuk, Park; Camps Carmona, Adriano José; Fabra Cervellera, Fran; Rius Jordán, Antonio (2013-06)
    Article
    Accés restringit per política de l'editorial
    The results of two airborne experiments performed to test the precision and the relative accuracy of the conventional Global Navigation Satellite Systems Reflectometry (GNSS-R) technique employing only the C/A code are ...
  • GRECO Code Rejuvenated: hybrid CPU-graphical processing 

    Rius Casals, Juan Manuel; Carbo, Alex; Úbeda Farré, Eduard; Heldring, Alexander (IEEE, 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    GRECO code has been updated by replacing the graphical processing technique for computation of Physical Optics surface integral by a hybrid CPU-graphical processing approach. The resulting code needs more CPU power for ...
  • Ground moving target indication using multi-channel SAR with non-uniform displaced phase centers 

    Makhoul Varona, Eduardo; Broquetas Ibars, Antoni; Ruiz Rodon, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper presents an evaluation of a post-Doppler spacetime adaptive Processing (STAP) technique for non-uniformly displaced phase center receivers synthetic aperture radar (SAR). Both theoretical and simulation ...
  • Herramienta de calculo de la potencia de clutter producida por perfiles topograficos reales 

    Elias Fusté, Antonio; Broquetas Ibars, Antoni (1991)
    Text en actes de congrés
    Accés obert
    The surface clutter becames a interference in a radar system that makes it warse. So, ir was built a personal computer tool that obtains the surface clutter power. This tool takes imo consideration the orographic and ...
  • High frequency radar cross section of complex objects in real time 

    Rius Casals, Juan Manuel; Vall-Llossera Ferran, Mercedes Magdalena (Institute of Electrical and Electronics Engineers (IEEE), 1991)
    Text en actes de congrés
    Accés obert
    It is shown that real-time RCS (radar cross section) computation is possible with a high-performance graphics workstation. Physical optics (PO) and physical theory of diffraction (PTD) approximation are computed using the ...
  • High resolution GPR 3D images optimization 

    Vera González, Arnaldo (Universitat Politècnica de Catalunya, 2017-05)
    Treball Final de Grau
    Accés obert
    The present final bachelor’s degree project is an experimental-based work, where we seek the optimization on the creation and representation of three dimensional images using ground penetrating radar (GPR) technology. This ...
  • Identificación selectiva de centros de dispersion radar utilizando tecnicas ISAR 

    Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni; Jofre Roca, Lluís (1991)
    Text en actes de congrés
    Accés obert
    This paper presents an ISAR technique which is able to identify the scattering mechanisms in the target structure wich are responsible of each significant lo be of the RCS vs. angle diagram. The technique is based on a ...
  • Image formation for synthetic aperture radar using MATLAB 

    Cequiel Mir, Mireia (Universitat Politècnica de Catalunya, 2008-02-27)
    Projecte/Treball Final de Carrera
    Accés obert
    The study of SAR (Synthetic Aperture Radar) image formation using MATLAB it is explained in the following project. The main to use MATLAB in this project was the most important thing to choose it. As MATLAB it is one of ...
  • Impact analysis of wind turbines blockage on doppler weather radar 

    Belmonte Molina, Aniceto; Fabregas Canovas, Francisco Javier (2010)
    Text en actes de congrés
    Accés obert
  • Impact of clutter decorrelation on Geosynchronous SAR 

    Recchia, Andrea; Monti Guarnieri, Andrea; Broquetas Ibars, Antoni; Ruiz Rodon, Josep (VDE Conference Publications, 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    We discuss the effects of the clutter on a Geosynchronous SAR system exploiting long integration times (from minutes to hours) to counteract for spread losses and increase azimuth resolution. Only stable targets will be ...
  • Implementació del precondicionador SAI com a eina acceleradora en el càlcul de la Secció Recta Radar de blancs conductors 

    Cresswell Baldellou, Adam Andreu (Universitat Politècnica de Catalunya, 2009-07-17)
    Treball Final de Grau
    Accés obert
  • Importance sampling en simulaciones por computador de procesadores de señal radar 

    Elias Fusté, Antonio (1989)
    Text en actes de congrés
    Accés obert
    The application of importance-sampling technique can make possible to estímate very low false alarm rate in a radar simulator . The use of this technique to modify the probability density func t ion of the noise in a way ...
  • Integrated near-surface geophysical survey of the Cathedral of Mallorca 

    Pérez Gracia, María de la Vega; Caselles Magallón, Josep Oriol; Clapes Boixader, Jaime; Osorio Gómez, Raúl; Martínez, G.; Canas Torres, José Antonio (Elsevier, 2009-07-01)
    Article
    Accés restringit per política de l'editorial
    This paper describes an integrated near-surface geophysical study carried out in order to obtain high-resolution images of the shallow subsurface under and around the Cathedral of Mallorca. The study was a part of a global ...
  • Interferometría SAR a partir de datos ERS-1 sobre Tarragona. Análisis de errores 

    Carrasco, D; Alonso, J; Broquetas Ibars, Antoni (1995)
    Text en actes de congrés
    Accés obert
  • Interferometría SAR con datos de ERS-1 

    Carrasco Díaz, Daniel; SANZ, S; SOUSA, R; Broquetas Ibars, Antoni (1996)
    Text en actes de congrés
    Accés obert
    SAR Interferometry allows the obtention of digital elevation models (DEM) by combination of two synthetic aperture radar images acquired from slightly different viewpoints. ERS-1 SAR interferometry has already been validated ...
  • Internal clutter motion impact on the long integration GEOSAR acquisition 

    Ruiz Rodon, Josep; Broquetas Ibars, Antoni; Makul, Eduardo; Monti Guarnieri, Andrea; Recchia, Andrea (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this paper, the impact of the internal clutter motion in GEOSAR acquisitions is analyzed. A nearly zero inclination with low eccentricity geosynchronous orbit is considered and, therefore, long integration, in order of ...
  • Interpretación de imágenes obtenidas por el e.r.s.-1 mediante un dispersómetro polarimétrico 

    Porrata-Dòria i Yagüe, Ramir de; Broquetas Ibars, Antoni; Fabregas Canovas, Francisco Javier (1995-06)
    Article
    Accés obert
    Un dispersómetro polarimétrico es un radar de baja potencia y corto alcance capaz de medir la matriz de dispersión de la superficie que esté iluminado. “TERPBA” (TErrestrial Radar Equipment for Scattering Analysis) es un ...
  • Investigación industrial para la evaluación de sistemas de seguridad activa pre-crash (vehículo y peatón) 

    Muñoz Zoilo, Oscar (Universitat Politècnica de Catalunya, 2012-06)
    Projecte/Treball Final de Carrera
    Accés obert
    El proyecto se centra en desarrollar una metodología para la evaluación de los nuevos sistemas avanzados de asistencia a la conducción PRE-CRASH que incorporan los vehículos basados en sistemas electrónicos de detección ...
  • Iterative solution to temporal phase wrapping in differential SAR interferometry for high displacement rate phenomena 

    Monells Miralles, Daniel; Iglesias González, Rubén; Centolanza, Giuseppe; Mallorquí Franquet, Jordi Joan (VDE Conference Publications, 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Temporal phase wrapping may be an issue in Differential SAR Interferometry (DInSAR) for terrain displacement monitoring, especially when the deformation rate of the phenomena under observation is high and/or the temporal ...