Now showing items 81-100 of 106

  • 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
  • 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 ...
  • Refined estimation of time-varying baseline errors in airborne SAR interferometry 

    Reigber, Andreas; Prats Iraola, Pau; Mallorquí Franquet, Jordi Joan (IEEE, 2006-01-31)
    Article
    Open Access
    The processing of airborne synthetic aperture radar (SAR) data requires a precise compensation of the deviations of the platform movement from a straight line. This is usually carried out by recording the trajectory with ...
  • Resolution in evaluation of structural elements by using ground-penetrating radar 

    Pérez Gracia, María de la Vega (2009-10-29)
    Conference lecture
    Open Access
    Ground-penetrating radar (GPR) is a non-invasive geophysical technique widely used in civil engineering, archaeology and shallow geology. Radar images of the inner media provides information about inner.
  • Resonant pulse-shaping power supply for radar transmitters 

    Bell Rodriguez, Miguel Victoria Ramo; Roberg, Michael; Pack, Riley; Garcia Fernandez, Pablo; Alarcón Cot, Eduardo José; Popoviç, Zoya; Maksimovic, Dragan (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Conference report
    Restricted access - publisher's policy
    The final radiofrequency power amplifier (PA) of a radar transmitter module is a large factor in system efficiency. Typical radar transmitter signals are frequency-modulated with constant-amplitude pulse envelopes in order ...
  • Results on spatial-temporal atmospheric phase screen retrieval from long-term GEOSAR acquisition 

    Ruiz Rodon, Josep; Broquetas Ibars, Antoni; Makhoul Varona, Eduardo; Monti Guarnieri, Andrea; Rocca, Fabbio (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Conference report
    Restricted access - publisher's policy
    In this paper, a high integration gain GEOSAR mission for Earth imaging is presented. The spatial-temporal atmospheric decorrelation issues of a long integration time GEOSAR mission must be carefully studied. The ...
  • RF interference analisys in aperture synthesis interferometric radiometers: Application to L-band MIRAS instrument 

    Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Bará Temes, Francisco Javier; Capdevila Vives, Joan (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-03-31)
    Article
    Open Access
    Current spaceborne radiometers do not achieve the required spatial resolution demanded by the scientific community due to antenna-size technological limitations. In recent years, several space agencies have been studying ...
  • Robust array configuration for a microwave interferometric radiometer: application to the geoSTAR project 

    Torres Torres, Francisco; Tanner, Alan B.; Brown, S. T.; Lambrigsten, Bjorn H. (IEEE Institute of Electrical and Electronics Engineers, 2007-01-31)
    Article
    Open Access
    The Geostationary Synthetic Thinned Array Radiometer represents a promising new approach to microwave atmospheric sounding from geostationary orbit based on passive interferometry. One of the major concerns about the ...
  • SAR Interferometric phase noise reduction using wavelet transform 

    López Martínez, Carlos; Cànovas, Xavier Fàbregas; Chandra, A. M. (IEE-INST ELEC ENG, 2001-05-31)
    Article
    Open Access
    The problem of synthetic aperture radar interferometric phase noise reduction is addressed. A new technique based on discrete wavelet transforms is presented. This technique guarantees high resolution phase estimation ...
  • Simulació estadística de clutter marí amb models de distribució K 

    González Moragas, Oriol (Universitat Politècnica de Catalunya, 2011-09-07)
    Master thesis (pre-Bologna period)
    120 months embargo
    English: The aim of this project is the simulation of the radar echo signal scattered by the sea surface which is called "Sea clutter". This project is related with the SAR MTI systems which are a type of radar systems ...
  • Simulación de un radar pulsado para el control de aeronaves 

    Sánchez Orduña, Quim (Universitat Politècnica de Catalunya, 2011-06)
    Master thesis (pre-Bologna period)
    Open Access
    El proyecto de final de carrera tiene como objetivo la simulación de un radar pulsado, cuya aplicación será detectar aeronaves en función de la meteorología. Crearemos un panel de control dónde poder seleccionar todos ...
  • SPALINET: Red Española de lidares de aerosoles 

    Guerrero Ruiz, A.; Sicard, Michaël; Rocadenbosch Burillo, Francisco; Muñoz, C.; Tomás Martínez, Sergio; Comerón Tejero, Adolfo; Pujadas, Manuel; Molero, Francisco; Alados Arboledas, Lucas; Moreno, J. M.; Bolarín, Jose Miguel; Requena, Alberto; Córdoba Jabonero, Carmen; Gil, Marisa; Exposito, Francisco Javier; Díaz Cort, Josep; Pedrós, Roberto; Martínez Lozano, José Antonio (2008)
    Conference report
    Restricted access - publisher's policy
  • SPALINET: The Spanish and Portuguese aerosol lidar network 

    Moreno, J.M.; Wagner, F.; Rodrigues, J.; Rocadenbosch Burillo, Francisco; Sicard, Michaël; Pujadas, Manuel; Alados Arboledas, Lucas; Pedrós, Roberto; Díaz, Juan Pedro; Córdoba Jabonero, Carmen; Requena, Alberto; Comerón Tejero, Adolfo (2009)
    Conference report
    Open Access
    To extend and reinforce the action of the EARLINET-ASOS project, a network of Spanish and Portuguese aerosol lidars (SPALINET) was created. In the first three years of the project six out of the ten systems have been ...
  • Spectral iterative algorithm for RCS computation in electrically large or intermediate perfectly conducting cavities 

    Rius Casals, Juan Manuel; Lozano Solsona, Angel; Cardama Aznar, Ángel; Jofre Roca, Lluís (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1994-06-01)
    Article
    Open Access
    A novel algorithm designed to compute efficiently and accurately the high-frequency electromagnetic scattering from open-ended waveguide cavities is presented. The cavity is converted into a stepped-waveguide model so that ...
  • Synthesis, construction, and validation of a fractal surface 

    Ruello, Giuseppe; Blanco Sánchez, Pablo; Iodice, Antonio; Mallorquí Franquet, Jordi Joan; Riccio, Daniele; Broquetas Ibars, Antoni; Franceschetti, Girogio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2006-06-30)
    Article
    Open Access
    Fractal geometry provides reliable models to describe geometrical properties of natural surfaces. Therefore, their use in the electromagnetic scattering methods deserves careful research. In order to have complete insight ...
  • Target spinor calibration (TSC) for polarimetric radar cross-section measurements 

    Fabregas Canovas, Francisco Javier; Romeu Robert, Jordi; Broquetas Ibars, Antoni; Jofre Roca, Lluís (IEE-INST ELEC ENG, 1995-09-01)
    Article
    Open Access
    A new polarimetric calibration method is proposed based on scattering matrix decomposition, via Pauli matrices. This scheme operates with the Pauli target vectors instead of the scattering matrix. The base elements of the ...
  • Temporal PolSAR image series exploitation with binary partition trees 

    Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean (IEEE, 2012)
    Conference report
    Restricted access - publisher's policy
    In this paper, the processing of temporal PolSAR image series is addressed through a region-based and multi-scale data representation, the Binary Partition Tree (BPT). This structure contains useful information related ...
  • The polarimetric ratio filter applied to polinsar images 

    Foucher, Samuel; López Martínez, Carlos; Charbonneau, François (IEEE, 2012)
    Conference report
    Restricted access - publisher's policy
    We are proposing recursive filter for the filtering of Single Look Complex PolInSAR data. This recursive filter allows the iterative refinement of a coarse multilook estimate by reintroducing details that have been ...