Now showing items 122-141 of 173

  • PARSAR: A SAR processor implemented in a cluster of workstations 

    Maretínez, A; Fraile, F; Mallorquí Franquet, Jordi Joan; Nogueira, L; Gabaldà, J; Broquetas Ibars, Antoni; González Colás, Antonio María (ESA Publications Division, 1997)
    Conference report
    Open Access
    A parallel SAR processor is presented in this paper. The target configuration is a cluster of UNIX workstations, available in most user sites. This fact allows to obtain an increased computing performance without the need ...
  • Performance assessment of a homodyne laser radar for surface displacement monitoring 

    Rodríguez Gómez, Alejandro Antonio; Comerón Tejero, Adolfo; Mesalles Nalda, Eloy (Spie-Int Society Optical Engineering, 2001-12-31)
    Article
    Open Access
  • Phase quality optimization in Orbital Differential SAR Interferometry with fully polarimetric data 

    Monells Miralles, Daniel; Iglesias González, Rubén; Mallorquí Franquet, Jordi Joan; Fabregas Canovas, Francisco Javier; López Martínez, Carlos (IEEE, 2012)
    Conference report
    Restricted access - publisher's policy
    Orbital Differential SAR Interferometry (DInSAR) is a well-known technique to retrieve terrain deformation phenomena from wide areas with high resolution. Historically its application has been limited to single polarization ...
  • Phased-Array Antenna Calibration and Cross-polarization improvement of an X-band Weather Radar 

    Masalias Huguet, Gerard (Universitat Politècnica de Catalunya, 2015-10)
    Master thesis (pre-Bologna period)
    Open Access
    Dual-polarized phased-array radars used for weather retrieval purposes is an emerging tendency over the last few years. The dual-polarization technology provides an expanded range of weather products and the reliability ...
  • Polarimetric coherence optimization for interferometric differential applications 

    Pipia, Luca; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; López Martínez, Carlos; Mallorquí Franquet, Jordi Joan (2009)
    Conference report
    Open Access
    In this paper, the potentials of polarimetric coherenceoptimization techniques for differential interferometric SAR (DInSAR) applications are examined. For this purpose, the cutting-edge approaches available in the ...
  • Polarimetric radar interferometry for improved mine detection and surface clutter rejection 

    Sagués Piella, Lluís; López Márquez, Miguel Ángel; Fortuny, Joaquim; Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni; Sieber, Alois (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-06-30)
    Article
    Open Access
    A recently developed technique, polarimetric radar interferometry, is applied to tackle the problem of the detection of buried objects embedded in surface clutter. An experiment with a fully polarimetric radar in an anechoic ...
  • Polarimetric speckle noise effects in quantitative physical parameters retrieval 

    López Martínez, Carlos; Hajnsek, I.; Lee, J. S.; Pottier, Eric; Fabregas Canovas, Francisco Javier (IEE-INST ELEC ENG, 2006-06-30)
    Article
    Open Access
    Quantitative estimation of physical parameters of the Earth's surface is currently an active area of research. Multidimensional synthetic aperture radar (SAR) systems appear in this framework as a tool capable of performing ...
  • Polarimetric techniques for SAR contrast and resolution enhancement 

    López Martínez, Carlos; Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni; Krogager, E (Institute of Electrical and Electronics Engineers (IEEE), 1999)
    Conference report
    Open Access
  • Polarimetric temporal analysis of urban environments with a ground-based SAR 

    Pipia, Luca; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; López Martínez, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2013-04)
    Article
    Restricted access - publisher's policy
    Revisiting time constitutes a key constraint for continuous monitoring activities based on space- and airborne synthetic aperture radar (SAR) acquisitions. Conversely, the employment of terrestrial platforms overcomes ...
  • Precise geometry simulation of interferometric SAR signal for air- and spaceborne sensors 

    Bara, M; Broquetas Ibars, Antoni; Closa Domínguez, Josep M. (IEEE Piscataway, 2000)
    Conference report
    Open Access
    A complete interferometric synthetic aperture radar (SAR) simulator has been developed. It achieves precise results by using geodetic models to represent the Earth's shape, and considering SAR effects such as range migration, ...
  • Procesado de imágenes SAR (Radar de Apertura Sintética) aerotransportado con compensación de movimiento 

    Bara Iniesta, Marc Antoni; Javier, Cachón; Broquetas Ibars, Antoni; Carlos, Juan Crespo (Iberdrola Instituto Tecnológico, 1998)
    Conference report
    Open Access
    An operational processor to obtain high resolution radar images of the Earth surface from an airborne platform is presented. The paper describes the problem, its geometry and the steps to obtain a reflectivity image from ...
  • Prospección con radar de subsuelo para mejorar la nanozonificación sísmica de ciudades densas: aplicación en grandes calles de Barcelona 

    Muñoz Alba, Mercedes (Universitat Politècnica de Catalunya, 2011-10-21)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    Los estudios de zonificación sísmica son una de las evaluaciones necesarias para analizar riesgo sísmico. Mediante los mismos se definen zonas en las cuales la respuesta del suelo al paso de las ondas sísmicas es similar. ...
  • Prototipo de un dispositivo de transporte para equipos GPR 

    Borrell Fernández, Jordi (Universitat Politècnica de Catalunya, 2009-01-12)
    Master thesis (pre-Bologna period)
    Open Access
    El contingut d’aquest projecte es basa en el redisseny d’un dispositiu per al transport de un georadar. Es parteix d’un dispositiu ja dissenyat i s’estudia les mancances tècniques i de confort d’aquest. Seguidament es ...
  • El Radar : de dónde viene y hacia dónde va 

    Broquetas Ibars, Antoni (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1994)
    Article
    Open Access
  • Radar biestàtic sincronitzat per Hitchhiking 

    Pous i Sabadí, Carles; Aguasca Solé, Albert; Elias Fusté, Antoni; Broquetas Ibars, Antoni (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1993)
    Article
    Open Access
  • Radar Doppler de bajo coste como sensor de alarma en tecnología impresa 

    de los Reyes, Elías; Ferrando Bataller, Miquel; Elias Fusté, Antonio; Corbella Sanahuja, Ignasi (1981)
    Conference report
    Open Access
    General configurations for homodyne Doppler Radars for intruder detection are presented. A prototype on microstrip technology has been realized which exhibits excellent performances at a low component cost. This prototype ...
  • Radar en Banda W (94 GHz) para aplicaciones meteorológicas 

    Zhu, Yanfang (Universitat Politècnica de Catalunya, 2015-06)
    Bachelor thesis
    Open Access
    design the radar system which operates at 94GHz for measurements of clouds
  • Radiometric Sensitivity Computation in Aperture Synthesis Interferometric Radiometry 

    Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Torres Torres, Francisco (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-03-31)
    Article
    Open Access
    This paper is concerned with the radiometric sensitivity computation of an aperture synthesis interferometric radiometer devoted to Earth observation. The impact of system parameters and the use of simultaneous redundant ...
  • Radiometric sensitivity computation in aperture synthesis interferometric radiometry 

    Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Torres Torres, Francisco (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-03-01)
    Article
    Open Access
    This paper is concerned with the radiometric sensitivity computation of an aperture synthesis interferometric radiometer devoted to Earth observation. The impact of system parameters and the use of simultaneous redundant ...
  • Randomizing ties in a sign radar detector 

    Figueiras Vidal, Aníbal R.; Mariño Acebal, José Bernardo; Lagunas Hernandez, Miguel A.; García Gómez, Ramón; Martín Funke, Enrique (Imperial College Press (ICP), 1981)
    Conference report
    Open Access
    A general formulation to consider the effects of typical randomization methods (RMs) for a digital application of Generalized Sign Test (GST) detector in Radar is introduced. A first approximation leads us to some basic ...