Now showing items 91-106 of 106

  • 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 ...
  • The processing of hexagonally sampled signals with standard rectangular techniques: application to 2D large aperture synthesis interferometric radiometers 

    Camps Carmona, Adriano José; Bará Temes, Francisco Javier; Corbella Sanahuja, Ignasi; Torres Torres, Francisco (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1997-01-31)
    Article
    Open Access
    In Earth observation programs there is a need of passive low frequency (L-band) measurements to monitor soil moisture and ocean salinity with high spatial resolution 10-20 km, a radiometric resolution of 1 K and a revisit ...
  • Topography dependent motion compensation for repeat-pass interferometric SAR systems 

    Prats Iraola, Pau; Reigber, Andreas; Mallorquí Franquet, Jordi Joan (IEEE, 2005-04-30)
    Article
    Open Access
    This letter presents a new motion compensation algorithm to process airborne interferometric repeat-pass synthetic aperture radar (SAR) data. It accommodates topography variations during SAR data processing, using an ...
  • Transición guía de onda - línea microstrip en banda W 

    Mata Roca, Salvador (Universitat Politècnica de Catalunya, 2011-11-17)
    Master thesis (pre-Bologna period)
    Open Access
    English: Design and implement a transition back-to-back W-band. Designing a transition back-to-back for unencapsulated active devices.
  • Validation of a sea surface model for simulations of dynamic maritime SAR images 

    Yam Ontiveros, Luis Eduardo; Mallorquí Franquet, Jordi Joan; Rius Casals, Juan Manuel (IEEE, 2012)
    Conference lecture
    Restricted access - publisher's policy
    Controllable maritime scenarios have become a central issue in the research of new applications of SAR imaging to vessel monitoring systems. Numerical tools such as GRECOSAR, a SAR simulator of complex targets, are able ...
  • Variable local weight filtering for PolSAR data speckle noise reduction 

    Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean (IEEE, 2012)
    Conference report
    Restricted access - publisher's policy
    This paper presents a Polarimetric SAR data speckle filtering technique, based on a combined filtering in the spatial and polarimetric domains. It is based on a bilateral filtering employing distance measures over these ...
  • Wavelet Transform-Based Interferometric SAR Coherence Estimator 

    López Martínez, Carlos; Fabregas Canovas, Francisco Javier; Pottier, Eric (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-12-31)
    Article
    Open Access
    A novel method to estimate interferometric coherence in synthetic aperture radar interferometry is proposed. It is demonstrated that this approach is not affected by the terrain topography, contrary to multilook techniques. ...