Now showing items 100-119 of 180

  • Herramienta de calculo de la potencia de clutter producida por perfiles topograficos reales 

    Elias Fusté, Antonio; Broquetas Ibars, Antoni (1991)
    Conference report
    Open Access
    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)
    Conference report
    Open Access
    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 ...
  • Identificación selectiva de centros de dispersion radar utilizando tecnicas ISAR 

    Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni; Jofre Roca, Lluís (1991)
    Conference report
    Open Access
    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)
    Master thesis (pre-Bologna period)
    Open Access
    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)
    Conference report
    Open Access
  • Impact of clutter decorrelation on Geosynchronous SAR 

    Recchia, Andrea; Monti Guarnieri, Andrea; Broquetas Ibars, Antoni; Ruiz Rodon, Josep (VDE Conference Publications, 2014)
    Conference report
    Restricted access - publisher's policy
    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)
    Bachelor thesis
    Open Access
  • Importance sampling en simulaciones por computador de procesadores de señal radar 

    Elias Fusté, Antonio (1989)
    Conference report
    Open Access
    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
    Restricted access - publisher's policy
    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)
    Conference report
    Open Access
  • Interferometría SAR con datos de ERS-1 

    Carrasco Díaz, Daniel; SANZ, S; SOUSA, R; Broquetas Ibars, Antoni (1996)
    Conference report
    Open Access
    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)
    Conference report
    Restricted access - publisher's policy
    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
    Open Access
    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)
    Master thesis (pre-Bologna period)
    Open Access
    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 ...
  • Joint wall mitigation and compressive sensing for indoor image reconstruction 

    Lagunas Targarona, Eva; Amin, Moeness; Ahmad, Fauzia; Nájar Martón, Montserrat (IEEE Press. Institute of Electrical and Electronics Engineers, 2012)
    Article
    Restricted access - publisher's policy
    Compressive sensing (CS) for urban operations and through-the-wall radar imaging has been shown to be successful in fast data acquisition and moving target localizations. The research in this area thus far has assumed ...
  • Ku Band GB-SAR system integration and validation 

    Palomas Riera, Clàudia (Universitat Politècnica de Catalunya, 2015-07-21)
    Bachelor thesis
    Open Access
    This paper contains full detailed the process of calibration of the radar system with its measurements
  • Laboratory characterization of a GPR antenna for high-resolution testing: radiation pattern and vertical resolution 

    Pérez Gracia, María de la Vega; Capua, Daniel di; González Drigo, José Ramón; Pujades Beneit, Lluís (2009-06)
    Article
    Restricted access - publisher's policy
    High-resolution ground-penetrating radar (GPR) evaluations of structures are usually carried out using antennas with high nominal centre frequencies (between 1 and 2GHz). A comprehensive characterization of such an antenna ...
  • Laboratory experiments of polarimetric radar interferometry: DEM generation and vegetation height estimation 

    Fortuny Guasch, Joaquim; Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1999)
    Conference report
    Open Access
    A coherence optimization method, which makes use of polarimetry to enhance the quality of the interferograms, has been experimentally tested under laboratory conditions in an anechoic chamber. The experiments have proved ...
  • Landslide monitoring with spotlight TerraSAR-X DATA 

    Iglesias González, Rubén; Monells Miralles, Daniel; Centolanza, Giuseppe (IEEE, 2012)
    Conference report
    Restricted access - publisher's policy
    This paper aims to demonstrate that radar-based remote sensing techniques can be as effective as the conventional geotechnical ones for the detection and monitoring of well suited areas. Many of the high mountain ...
  • Linear and nonlinear terrain deformation maps from a reduced set of interferometric SAR images 

    Mora Sacristan, Óscar; Mallorquí Franquet, Jordi Joan; Broquetas Ibars, Antoni (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2003-10-31)
    Article
    Open Access
    In this paper, an advanced technique for the generation of deformation maps using synthetic aperture radar (SAR) data is presented. The algorithm estimates the linear and nonlinear components of the displacement, the error ...