Now showing items 53-72 of 106

  • GEMINI: geosynchronous SAR for Earth monitoring by interferometry and imaging 

    Monti Guarnieri, Andrea; Tebaldini, Stefano; Rocca, Fabio; Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Conference report
    Restricted access - publisher's policy
    In this paper we discuss a preliminary design for a constellation of geosynchronous (GEO) Synthetic Aperture Radars (SAR). The key design concept is to employ one or more pairs of closely-spaced twin receivers flown ...
  • Generació eficient d'interferogrames diferencials mitjantçant un DEM extrem 

    Monells Miralles, Daniel (Universitat Politècnica de Catalunya, 2008-12-15)
    Master thesis (pre-Bologna period)
    Open Access
    Aquest projecte està emmarcat en el camp de la interferometria, una aplicació que permet tenir informació al llarg de l’eix d’observació d’una escena. La informació d’alçada s’extreu a partir del que s’anomena interferograma, ...
  • GRECO Code Rejuvenated: hybrid CPU-graphical processing 

    Rius Casals, Juan Manuel; Carbo, Alex; Úbeda Farré, Eduard; Heldring, Alexander (IEEE, 2013)
    Conference report
    Restricted access - publisher's policy
    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)
    Conference report
    Restricted access - publisher's policy
    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 ...
  • 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
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Obtención de mapas de detección en escenarios marítimos mediante simulación paramétrica en sistemas SAR-MTI 

    Bertomeu Rojas, Xavier (Universitat Politècnica de Catalunya, 2014-04-28)
    Master thesis (pre-Bologna period)
    60 months embargo
    [ANGLÈS] This project is a small part of a larger project called SIMTISYS. The purpose of SIMTISYS is to simulate the behavior of a synthetic aperture radar with moving target indication (MTI) capabilities in maritime ...
  • On-board phase and modulus calibration of large aperture synthesis radiometers: study applied to miras. 

    Torres Torres, Francisco; Camps Carmona, Adriano José; Bará Temes, Francisco Javier; Corbella Sanahuja, Ignasi; Ferrero Pintor, Roberto (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1996-07-01)
    Article
    Open Access
    On-board calibration of bidimensional aperture synthesis radiometers with a large number of antennas by the standard correlated noise injection method is technologically very critical because of the stringent requirements ...
  • Optical Doppler shift with structured light 

    Belmonte Molina, Aniceto; Pérez Torres, Juan (2011-11-15)
    Article
    Open Access
    When a light beam with a transverse spatially varying phase is considered for optical remote sensing, in addition to the usual longitudinal Doppler frequency shift of the returned signal induced by the motion of the scatter ...
  • Optimización de un Centro de Fusión CFAR para Sistemas Distribuidos RADAR 

    Ortega Villasclaras, Pablo Rafael; Elias Fusté, Antonio (1991)
    Conference report
    Restricted access - publisher's policy
    Distributed detection theory is widely used in surveillance systems that recquire a large area of coverage and a large number of targets under consideration. In this paper an optimization algorithm for distributed systems ...