Now showing items 21-40 of 113

  • Assessing hypertemporal SENTINEL-1 COHERENCE maps for LAND COVER monitoring 

    Vicente Guijalba, F.; Duro, Javier; Notarnicola, Claudia; Jacob, Alexander; Mallorquí Franquet, Jordi Joan; López Martínez, Carlos; Pottier, Eric; López Sánchez, Juan Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
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    This paper presents the main concepts and the initial analysis of the ESA SEOM project SInCohMap “EXPLOITATION OF SENTINEL-1 INTERFEROMETRIC COHERENCE FOR LAND COVER AND VEGETATION MAPPING”. The project evaluates the ...
  • Assessment of polarimetric SAR interferometry for improving ship classification based on simulated data 

    Margarit Martín, Gerard; Mallorquí Franquet, Jordi Joan (MDPI Molecular Diversity Preservation International, 2008-12)
    Article
    Open Access
    This paper uses a complete and realistic SAR simulation processing chain, GRECOSAR, to study the potentialities of Polarimetric SAR Interferometry (POLInSAR) in the development of new classification methods for ships. ...
  • A temporal phase coherence estimation algorithm 

    Zhao, Feng; Mallorquí Franquet, Jordi Joan (VDE Conference Publications, 2018)
    Conference report
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    Pixel selection is a critical procedure in DInSAR processing. In this paper a new temporal phase coherence (TPC) estimation algorithm is proposed for the pixel selection. TPC is calculated based on the estimated interferometric ...
  • A temporal phase coherence estimation algorithm and its application on DInSAR pixel selection 

    Zhao, Feng; Mallorquí Franquet, Jordi Joan (Institute of Electrical and Electronics Engineers (IEEE), 2019-11-01)
    Article
    Open Access
    Pixel selection is a crucial step of all advanced Differential Interferometric Synthetic Aperture Radar (DInSAR) techniques that have a direct impact on the quality of the final DInSAR products. In this paper, a full-resolution ...
  • Atmospheric artifacts correction with a covariance-weighted linear model over mountainous regions 

    Hu, Zhongbo; Mallorquí Franquet, Jordi Joan; Fan, Hongdong (Institute of Electrical and Electronics Engineers (IEEE), 2018-12-01)
    Article
    Open Access
    Mitigating the atmospheric phase delay is one of the largest challenges faced by the differential synthetic aperture radar (SAR) interferometry community. Recently, many publications have studied correcting the stratified ...
  • 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
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    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 refocus and feature extraction of single-look complex SAR signatures of vessels 

    Yam Ontiveros, Luis Eduardo; Mallorquí Franquet, Jordi Joan (2016)
    Article
    Open Access
    In recent years, spaceborne synthetic aperture radar ( SAR) technology has been considered as a complement to cooperative vessel surveillance systems thanks to its imaging capabilities. In this paper, a processing chain ...
  • Automatic self-matching network for industrial microwave heating based on the conjugate gradient algorithm 

    Mallorquí Franquet, Jordi Joan; Aguasca Solé, Alberto; Cardama Aznar, Ángel; Pagès Serra, Romà; Haro Sánchez, Jose (IEE-INST ELEC ENG, 1999-02-28)
    Article
    Open Access
    An automatic matching network has been implemented using a waveguide magic T with two sliding short circuit stubs whch are adjusted by a microcontroller running a conjugate gradient algorithm. The inclusion of this device ...
  • Automatic ship detection in SAR satellite images: performance assessment 

    Stasolla, Mattia; Santamaría, Carlos; Mallorquí Franquet, Jordi Joan; Margarit Martín, Gerard; Walker, Nick (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
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    This paper presents the benchmarking of four ship detection systems based on satellite borne Synthetic Aperture Radar data. This research, carried out within the framework of the FP7 NEREIDS project, provides a detailed ...
  • 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
    Open Access
    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 ...
  • Back and forward bistatic interferometry 

    Duque Biarge, Sergio; López Dekker, Francisco J.; Mallorquí Franquet, Jordi Joan; Merlano Duncan, Juan Carlos (2008)
    Conference report
    Open Access
    This paper characterizes the interferometric phase for a fixedreceiver bistatic SAR system. Also, the expressions for the interferometric phase and image resolution cell are summarized. It will be distinguished between ...
  • Bidimensional scattering of tm and te polarized waves by dielectric 

    Mallorquí Franquet, Jordi Joan; Vaquer Bonnin, Miguel; Cardama Aznar, Ángel; Jofre Roca, Lluís (EUROPEAN MICROWAVE CONFERENCE MANAGEMENT COMMITEE REED EXHIBITION COMPANIES, 1993)
    Conference report
    Open Access
    In the study of electromagnetic radiation effects over dielectric bodies, effective numerical methods are needed. At present, there is a lack of tools for measuring this effects and due to the huge growth of microwave ...
  • Bistatic SAR along track interferometry with multiple fixed receivers 

    Duque Biarge, Sergio; López Dekker, Francisco J.; Merlano Duncan, Juan Carlos; Mallorquí Franquet, Jordi Joan (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
    Conference report
    Open Access
    This paper presents an along-track interferometry (ATI)study for a bistatic or multiestatic SAR configuration with fixed ground receivers. This technique can be useful for sea current estimation or for any problem of Ground ...
  • Bistatic SAR tomography: processing and experimental results 

    Duque Biarge, Sergio; López Dekker, Francisco J.; Merlano Duncan, Juan Carlos; Mallorquí Franquet, Jordi Joan (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
    Conference report
    Open Access
    This paper presents across-track tomography applied to a bistatic geometry with fixed receivers. This kind of geometry can overcome some of the classical monostatic tomography limitations such as temporal decorrelation and ...
  • Capon- and APES-based SAR processing: performance and practical considerations 

    López Dekker, Francisco J.; Mallorquí Franquet, Jordi Joan (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-05)
    Article
    Open Access
    This paper discusses the use of Capon’s minimumvariance method (MVM) and Amplitude and Phase EStimation (APES) spectral-estimation algorithms to synthetic aperture radar range–azimuth focusing. The rationale of the ...
  • Carrier phase synchronisation scheme for very long baseline coherent arrays 

    Merlano Duncan, Juan Carlos; Mallorquí Franquet, Jordi Joan; López Dekker, Francisco J. (Institution of Electrical Engineers, 2012-07-19)
    Article
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    Proposed is a new carrier phase synchronisation scheme used to provide a stable phase reference to a very distant station. Channel induced phase fluctuations are characterised and compensated for with a round-trip loop ...
  • Coherency Matrix Decomposition-Based Polarimetric Persistent Scatterer Interferometry 

    Zhao, Feng; Mallorquí Franquet, Jordi Joan (Institute of Electrical and Electronics Engineers (IEEE), 2019-10-01)
    Article
    Open Access
    The rationale of polarimetric optimization techniques is to enhance the phase quality of the interferograms by combining adequately the different polarization channels available to produce an improved one. Different ...
  • Comparing satellite based and ground based radar interferometry and field observations at the Canillo landslide (Pyrenees) 

    Corominas Dulcet, Jordi; Iglesias González, Rubén; Aguasca Solé, Alberto; Mallorquí Franquet, Jordi Joan; Fabregas Canovas, Francisco Javier; Planas, Xavier; Gili Ripoll, José Antonio (Springer, 2014)
    Conference report
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    The landslide of El Forn de Canillo in the Principality of Andorra is one of the largest in the Pyrenees. In 2007 a monitoring system (boreholes equipped with inclinometers, extensometers and piezometers) was set up. Between ...
  • Comparison between differential SAR interferometry and ground measurements data in the displacement monitoring of the earth-dam of Conza della Campania (Italy) 

    Di Martire, Diego; Iglesias González, Rubén; Monells Miralles, Daniel; Centolanza, Giuseppe; Sica, Stefania; Ramondini, Massimo; Pagano, Luca; Mallorquí Franquet, Jordi Joan; Calcaterra, Domenico (2014-05-25)
    Article
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    This paper presents the application of Differential Synthetic Aperture Radar (SAR) interferometry (DInSAR) algorithms for the precise monitoring of earth dams ground deformation. The test site selected for this study is ...
  • Comparison of InSAR atmospheric phase screen correction with Global Atmospheric Models (GAM) 

    Hu, Zheng; Mallorquí Franquet, Jordi Joan (VDE Conference Publications, 2018)
    Conference report
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    Variations of atmospheric conditions cause Atmospheric Phase Screen (APS) in Interferometric Synthetic Aperture Radar (InSAR), which affects accuracy and reliability of its applications. Recent studies reveal that empirical ...