Ara es mostren els items 1-20 de 87

  • A maximum likelihood analysis of the RVoG model for forestry studies in polarimetric SAR interferometry 

    López Martínez, Carlos; Alonso González, Alberto (European Space Agency (ESA), 2013)
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    This work analyses the validity of the RVoG model as- sumption in case of PolInSAR data in forestry analy- sis. In order to assure that the interferometric coherence describes a line, as imposed by the RVoG model, ...
  • A Novel Algorithm for Ship Detection in SAR Imagery Based on the Wavelet Transform 

    Tello Alonso, Mª Victoria; López Martínez, Carlos; Mallorquí Franquet, Jordi Joan (IEEE, 2005-04-30)
    Article
    Accés obert
    Carrying out an effective control of fishing activities is essential to guarantee a sustainable exploitation of sea resources. Nevertheless, as the regulated areas are extended, they are difficult and time consuming to ...
  • A physical analysis of polarimetric SAR data statistical models 

    Deng, Xinping; López Martínez, Carlos; Varona, Eduardo Makhoul (Institute of Electrical and Electronics Engineers (IEEE), 2016-01-08)
    Article
    Accés obert
    The random walk model is studied with the objective to obtain a physical explanation for the texture of polarimetric synthetic aperture radar (SAR) data. A simulator is designed to imitate the scattering process under ...
  • Actividades del grupo EEF en el contexto de la red europea TMR "Polarimetría radar: Teoría y aplicaciones" 

    Fabregas Canovas, Francisco Javier; López Martínez, Carlos; Broquetas Ibars, Antoni (2000)
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    The activity of the EEF group in the TMR European Project Radar Polarimetry: Theory and Applications will be presented in this paper. We have developed new polarimetric-interferometric retrieval algorithms and enhancement ...
  • Advanced polarimetric optimization for DInSAR applications with Ground-Based SAR 

    Iglesias González, Rubén; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; López Martínez, Carlos; Alonso González, Alberto (2012)
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    In this paper, the applications of advanced polarimetric optimization techniques for Differential Interferometric SAR (DInSAR) pixel selection are explored in the framework of deformation map retrieval in landslides. ...
  • Advances in multidimensional synthetic aperture radar signal processing 

    López Martínez, Carlos; Ferro-Famil, Laurent; Reigber, Andreas (2010)
    Article
    Accés obert
  • An evaluation of PolSAR speckle filters on Compact-Pol images 

    Foucher, Samuel; Landry, Tom; López Martínez, Carlos; Charbonneau, François; Gagnon, Langis (IEEE, 2012)
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    The goal of this study is to evaluate some polarimetric speckle filters when applied to Compact Polarimetry (CP) data. Seven filters are evaluated on a set of artificial CP images. Performances regarding image restoration ...
  • Analisis de funciones mediante wavelets y su aplicacion a la compresion de imagenes sar 

    López Martínez, Carlos (1998-12)
    Article
    Accés restringit per política de l'editorial
  • Analysis and validity of the polInSAR line model on forested areas 

    López Martínez, Carlos; Fabregas Canovas, Francisco Javier; Alonso González, Alberto (2012)
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    This paper focuses on the analysis of certain hypotheses considered in quantitative remote sensing of forest areas by means of Polarimetric SAR Interferometry (PolInSAR). When addressing the quantitative estimation of ...
  • Analysis of ASAR/Envisat polarimetric backscattering characteristics of Doñana National Park wetlands 

    Martí Cardona, Belén; López Martínez, Carlos; Dolz Ripollès, Josep (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
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    Doñana National Park wetlands, in southwest Spain, undergo yearly cycles of inundation and drying out. These cycles, together with great extensions of annual helophytes, make of Doñana a rapidly changing environment. 43 ...
  • Analysis of volumetric scatters based on TanDEM-X polarimetric interferometric SAR data 

    López Martínez, Carlos; Alonso González, Alberto; Fabregas Canovas, Francisco Javier; Papathanassiou, Kostantinos (IEEE, 2011)
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    Polarimetric SAR Interferometry makes possible a detailed analysis of the volumetric scattering processes present in microwave scattering in case of forest areas. In previous contributions, the authors, under the hypothesis ...
  • Analysis, evaluation, and comparison of polarimetric SAR speckle filtering techniques 

    Foucher, Samuel; López Martínez, Carlos (2014-04)
    Article
    Accés restringit per política de l'editorial
    Speckle noise filtering on polarimetric SAR (PolSAR) images remains a challenging task due to the difficulty to reduce a scatterer-dependent noise while preserving the polarimetric information and the spatial information. ...
  • Application of high resolution spotlight TerraSAR-X data to landslide monitoring 

    Iglesias González, Rubén; Monells Miralles, Daniel; Centolanza, Giuseppe; Mallorquí Franquet, Jordi Joan; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; López Martínez, Carlos (2012)
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    This paper seeks to demonstrate that radar-based remote sensing techniques, especially those based on orbital sensors, can be as effective as the conventional geotechnical and discrete GPS measurement ones for the detection ...
  • Assessment and estimation of the RVoG model in polarimetric SAR interferometry 

    López Martínez, Carlos; Alonso González, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2014-06-01)
    Article
    Accés restringit per política de l'editorial
    This paper investigates the validity of the random-volume-over-ground (RVoG) scattering model assumption for forest scattering on polarimetric interferometric synthetic aperture radar (PolInSAR) data. The model makes some ...
  • Assessment of L-Band SAR polarimetry for soil and crop monitoring 

    Barber, Matías; López Martínez, Carlos; Grings, Francisco (VDE-Verlag, 2016)
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    Near-future L-band fully polarimetric Synthetic Aperture Radar (SAR) missions will provide meaningful and timely information over agricultural lands. In this paper, we evaluate the potential of L-band SAR polarimetry for ...
  • Atmospheric phase screen compensation in ground-based sar with a multiple-regression model over mountainous regions 

    Iglesias González, Rubén; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; Mallorquí Franquet, Jordi Joan; López Martínez, Carlos; Gili Ripoll, José Antonio; Corominas Dulcet, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2014-05-01)
    Article
    Accés restringit per política de l'editorial
    In this paper, a new model-based technique for the compensation of severe height-dependent atmospheric artifacts, using ground-based synthetic aperture radar (SAR) data over mountainous regions, is proposed. The method ...
  • Automatic vessel monitoring with single and multidimensional SAR images in the wavelet domain 

    Tello Alonso, Mª Victoria; López Martínez, Carlos; Mallorquí Franquet, Jordi Joan (ELSEVIER SCIENCE BV, 2006-12-31)
    Article
    Accés obert
    Spaceborne Synthetic Aperture Radar (SAR) techniques constitute an extremely promising alternative compared to traditional surveillance methods thanks to the all-weather and day-and-night capabilities of Radar linked with ...
  • Bilateral distance based filtering for polarimetric SAR data 

    Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean; Deng, Xinping (2013-10-30)
    Article
    Accés obert
    This paper introduces a non-linear Polarimetric SAR data filtering approach able to preserve the edges and small details of the data. It is based on exploiting the data locality in both, the spatial and the polarimetric ...
  • Binary partition tree as a polarimetric SAR data representation in the space-time domain 

    Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean (IEEE, 2011)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    The aim of this paper is to present a Polarimetric Synthetic Aperture Radar data processing technique on the space-time domain. This approach is based on a Binary Partition Tree (BPT), which is a region-based and multi-scale ...
  • Cancellation of scattering mechanisms in PolInSAR: application to underlying topography estimation 

    López Martínez, Carlos; Papathanassiou, Kostantinos (IEEE Press. Institute of Electrical and Electronics Engineers, 2013-02)
    Article
    Accés restringit per política de l'editorial
    This paper investigates the polarimetric dependence of the interferometric complex correlation and proposes amethodology for cancelling individual scattering mechanisms, in terms of the complex correlation coefficient ...