Now showing items 21-40 of 175

  • Aplicaciones diferenciales de la interferometría SAR 

    Carrasco, D; Esteban, D; Tena, J; López Bonillo, Francisco; Rodríguez, O; Broquetas Ibars, Antoni (1997)
    Conference report
    Open Access
    Synthetic Aperture Radar Interferometry allows the coherent combination of radar images acquired from different viewpoints. The interferogram generated by substracting their phases has got information related to the geometry ...
  • Ascending-descending orbit combination SAR interferometry assessment 

    Carrasco, D; Díaz, J; Broquetas Ibars, Antoni; Arbiol, Roman; CASTILLO, M; Palà, V (ESA Publications Division, 1997)
    Conference report
    Open Access
    Ascending-descending orbit combination for DEM generation is very promising technique which can be used to fill in ome gaps in the DEMs caused by the geometric deformations or SAR images. The benefits from the combination ...
  • A Small Baseline DIFSAR Approach for Investigating Deformations on Full Resolution SAR Interferograms 

    Lanari, Ricardo; Mora Sacristan, Óscar; Manunta, Michele; Mallorquí Franquet, Jordi Joan; Berardino, P.; Sansoti, Eugenio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2004-07-31)
    Article
    Open Access
    This paper presents a differential synthetic aperture radar (SAR) interferometry (DIFSAR) approach for investigating deformation phenomena on full-resolution DIFSAR interferograms. In particular, our algorithm extends ...
  • 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
    Restricted access - publisher's policy
    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 ...
  • Atmosphere characterisation with SAR interferometry 

    Moyano Sánchez, Gorka (Universitat Politècnica de Catalunya, 2009-07)
    Master thesis
    Open Access
    The contribution of the atmosphere in SAR interferometry is not completely known. Therefore, the goal of the project is to characterise the atmosphere, i.e., to study the way it relates to interferograms. The analysis ...
  • 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
    Restricted access - publisher's policy
    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 ...
  • 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 ...
  • Back Focal Plane Interferometry for Holographic Optical Traps 

    Martínez Llinàs, Jade (Universitat Politècnica de Catalunya, 2011-03-10)
    Master thesis
    Open Access
    English: Since its invention in 1986, optical trapping as a tool to manipulate microparticles non-invasively has found many applications in physics and biology. Force measurement on biomaterials is a potential application ...
  • Baseline redundancy and radiometric sensitivity: a critical review 

    Bará Temes, Francisco Javier; Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi (European Spatial Agengy (ESA), 1995)
    Conference report
    Open Access
    When computing the radiometric resolution of an interferometric radiometer the correlation among the errors of different baselines is usually assumed negligible. ln this way: a) the radiometric sensitivity turns out to be ...
  • Benefits of applying nodal sampling to SMOS data over semi-enclosed seas and strongly RFI-contaminated regions 

    González Gambau, Verónica; Olmedo, Estrella; Martinez, J.; Turiel, Antonio; Corbella Sanahuja, Ignasi; Oliva, Roger; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    Radio Frequency Interferences (RFI) are still an important source of contamination in SMOS data. The application of nodal sampling (NS) to brightness temperature images helps to mitigate the degradation that RFIs produce ...
  • Calibration procedures in 2-D large interferometric radiometers study applied to the MIRAS/SMOS instrument 

    Torres Torres, Francisco; Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Vall-Llossera Ferran, Mercedes Magdalena; Duffo Ubeda, Núria (2000)
    Conference report
    Open Access
  • Calibration techniques of interferometric microwave receivers 

    Ortega Corral, Antonio (Universitat Politècnica de Catalunya, 2017-10-18)
    Bachelor thesis
    Restricted access - author's decision
    An interferometer for orbital determination receives a satellite signal at different spatial points using antennas that form a baseline. Those received signals have a different phase which is related to the distance between ...
  • Characterization of a precise orbit determination interferometer 

    Traver Tarrés, Ignasi (Universitat Politècnica de Catalunya, 2018-02-06)
    Bachelor thesis
    Open Access
    This project addresses the characterization of an interferometer used for satellite orbit determination. It is included in the context of the assemblage of a Geostationary Synthetic Aperture Radar (GeoSAR) for Earth and ...
  • Coherence estimation in synthetic aperture radar data based on speckle noise modeling 

    López Martínez, Carlos; Pottier, Eric (Optical Society of America, 2007-02-28)
    Article
    Open Access
    In the past we proposed a multidimensional speckle noise model to which we now include systematic phase variation effects. This extension makes it possible to define what is believed to be a novel coherence model able to ...
  • Comparative analyses of multi-frequency PSI ground deformation measurements 

    Sabater Cifuentes, José Raúl (Universitat Politècnica de Catalunya, 2012-03-29)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    [ANGLÈS] In recent years many new developments have been made in the field of SAR image analysis. The diversity of available SAR imagery allows a wider range of applications to be covered in the domain of risk management ...
  • 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
    Restricted access - publisher's policy
    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 GNSS-R processing techniques for spaceborne ocean altimetry 

    Martín Alemany, Francisco; d'Addio, Salvatore; Camps Carmona, Adriano José; Martín Neira, Manuel; Hyuk, Park; Pascual Biosca, Daniel (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    Earth-reflected Global Navigation Satellite System (GNSS) have become an attractive tool to be employed in low-Earth-orbit spaceborne missions, for applications such as ocean mesoscale altimetry and scatterometry. For such ...
  • Comparison of GPS L1 and Galileo E1 signals for GNSS-R ocean altimetry 

    Pascual Biosca, Daniel; Hyuk, Park; Camps Carmona, Adriano José; Alonso Arroyo, Alberto; Onrubia Ibáñez, Raúl (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    In the last years, the GPS signals have been validated as opportunity signals in a wide range of reflectometry-based remote sensing applications for sea, land or ice scenarios. Recently, the first Galileo satellites have ...
  • Comparison of InSAR atmospheric phase screen correction with Global Atmospheric Models (GAM) 

    Hu, Zheng; Mallorquí Franquet, Jordi Joan (VDE Conference Publications, 2018)
    Conference report
    Restricted access - publisher's policy
    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 ...
  • Comparison of topography- and aperture-dependent motion compensation algorithms for airborne SAR 

    Prats Iraola, Pau; Câmara de Macedo, Karlus A.; Reigber, Andreas; Scheiber, Rolf; Mallorquí Franquet, Jordi Joan (IEEE, 2007-07-31)
    Article
    Open Access
    This letter presents a comparison between three Fourier-based motion compensation (MoCo) algorithms for airborne synthetic aperture radar (SAR) systems. These algorithms circumvent the limitations of conventional MoCo, ...