Ara es mostren els items 1-13 de 13

    • A comparison of phase unwrapping techniques in synthetic aperture radar interferometry 

      Ferrando Bataller, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 1999)
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      A comparison of different phase unwrapping techniques based on the least mean square error is presented. A testing environment based on simulated interferograms has been created in order to assess the methods described in ...
    • A new spectral analysis algorithm for SAR data processing of ScanSAR data and medium resolution data without interpolation 

      Ferrando Bataller, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 1998)
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      This paper describes a new approach for ScanSAR data image generation, which performs efficient data processing and multilook operation without the need of interpolation stages. This new technique is based on the spectral ...
    • Accuracy assessment of SAR interferometry using the ERS-1 

      Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1995)
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      A SAR raw data simulator and a SAR processor are used as a tool for performance assessment of SAR interferometry algorithms like the multi-baseline and multifrequency. Traditional algorithms have also been tested with real ...
    • An adaptive scattering-mechanism-based filtering for multi-temporal pol(In)SAR data 

      Zhao, Feng; Mallorquí Franquet, Jordi Joan (VDE Conference Publications, 2018)
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      Accés restringit per política de l'editorial
      This paper presents a new adaptive filtering method for multi-temporal Pol(In)SAR images' denoising. Based on the polarimetric scattering mechanism of the given PolSAR data, the filtering first classifies all pixels into ...
    • 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 ...
    • Brightness-temperature retrival methods in synthetic aperture radiometers 

      Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena (IEEE, 2009-01)
      Article
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      Bightness-temperature retrieval techniques for synthetic aperture radiometers are reviewed. Three different approaches to combine measured visibility and antenna temperatures, along with instrument characterization ...
    • Fusing Landsat and SAR data for mapping tropical deforestation through machine learning classification and the PVts-ß non-seasonal detection approach 

      Tarazona Coronel, Yonatan; Zabala Torres, Alaitz; Pons Fernández, Xavier; Broquetas Ibars, Antoni; Nowosad, Jakub; Zurqani, Hamdi A. (2021-07-26)
      Article
      Accés obert
      This article focuses on mapping tropical deforestation using time series and machine learning algorithms. Before detecting changes in the time series, we reduced seasonality using Photosynthetic Vegetation (PV) index ...
    • Generation of precise wide-area geocoded elevation models with ERS SAR data 

      Bara, M; Romero, Matilde E. de; Mora, O; Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1999)
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      The authors present an improved technique for the generation of digital elevation models (DEM), capable of dealing with full scene images (100×100 km) coming from an interferogram obtained with ERS satellite data. Starting ...
    • Interferometric SAR signal analysis in the presence of squint 

      Bara, M; Scheiber, Rolf; Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1999)
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      In the following paper an analysis of the SAR impulse response signal from the interferometric point of view is expounded, with the intention of studying its phase behaviour in the presence of high squint values. The work ...
    • SAR interferometric coherence in wide band systems 

      Sagués Piella, Lluís; Bara Iniesta, Marc Antoni; Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni (VSP BV, 2000-02-28)
      Article
      Accés obert
      This paper presents a study of the interferometric coherence aimed to the understanding of the main sources of phase error of an operative wide band system. This objective is accomplished by finding a theoretical expression ...
    • Sparsity-based radar imaging of building structures 

      Lagunas, Eva; Amin, Moeness; Ahmad, Fauzia; Nájar Martón, Montserrat (Institute of Electrical and Electronics Engineers (IEEE), 2012)
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      Accés restringit per política de l'editorial
      In this paper, we address imaging of the interior structure of a building using a reduced number of measurements in through-the-wall imaging and urban sensing applications. Unlike majority of the feature detection methods ...
    • Spherical wave near-field imaging and radar cross-section measurement 

      Broquetas Ibars, Antoni; Palau, Josep; Jofre Roca, Lluís; Cardama Aznar, Ángel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-05-31)
      Article
      Accés obert
      The paper presents a new inverse synthetic aperture radar (ISAR) algorithm intended for radar cross-section (RCS) imaging and measurement from scattered fields. The method, based on a spherical-wave near-field illumination ...
    • Study of structural elements in heritage buildings with ground penetrating radar images 

      Santos Assunçao, Sonia; Pérez Gracia, María de la Vega (2018)
      Comunicació de congrés
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      Maintenance and repairing or ancient buildings requires efforts and a wide knowledge of the structures. However, in many cases, the constructive methods, the distribution of supporting elements and the materials are unknown. ...