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Ara es mostren els items 13-32 de 81

    • Circular synthetic aperture radar (C-SAR) system for ground based applications 

      Broquetas Ibars, Antoni; Porrata-Dòria i Yagüe, Ramir de; Sagués Piella, Lluís; Fabregas Canovas, Francisco Javier; Jofre Roca, Lluís (IEE-INST ELEC ENG, 1997-05-01)
      Article
      Accés obert
      The authors present an SAR system capable of obtaining radar images from measurements carried out with antennas that describe a circular trajectory centred outside the target region. The analytical formulation of the ...

    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...

    • Differential SAR interferometry with orbital, airborne and ground-based sensors 

      Monells Miralles, Daniel; Mallorquí Franquet, Jordi Joan; Aguasca Solé, Alberto; Broquetas Ibars, Antoni; Fabregas Canovas, Francisco Javier; López Martínez, Carlos; Alonso González, Alberto; Iglesias González, Rubén; Centolanza, Giuseppe (2011)
      Comunicació de congrés
      Accés obert
      • Introduction to Differential Interferometry • Orbital Sensors: ERS, ENVISAT, RADARSAT2, TerraSAR-X. • Airborne Sensors: DLR’s E-SAR • Ground-Based Sensors: UPC’s GB-SAR • Conclusions

    • Diseño y evaluación de un sistema de medida RCS 

      Blanch Boris, Sebastián; Xarrié, Jaume; Broquetas Ibars, Antoni; Fabregas Canovas, Francisco Javier; Jofre Roca, Lluís (Unión Científica Internacional de Radio (URSI), 1990)
      Text en actes de congrés
      Accés obert
      A polarimetric compact range RCS measurement system covering 8 to 40 GHZ is presented. The sensitivity is evaluated both theoretically and experimentally. Some RCS and ISAR results are included.

    • Down-slope combination of orbital and ground-based DInSAR for the efficient monitoring of slow-moving landslides 

      Iglesias González, Rubén; Monells Miralles, Daniel; Centolanza, Giuseppe; Mallorquí Franquet, Jordi Joan; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto (VDE Conference Publications, 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper seeks to demonstrate that radar-based remote sensing techniques are as effective as conventional geotechnical ones for geo-hazard assessment and mitigation. Concretely, this work encourages the proper combination ...

    • Examen Final 

      Comerón Tejero, Adolfo; Corbella Sanahuja, Ignasi; Fabregas Canovas, Francisco Javier; López Martínez, Carlos; Vall-Llossera Ferran, Mercedes Magdalena (Universitat Politècnica de Catalunya, 2021-01-23)
      Examen
      Accés restringit a la comunitat UPC

    • Examen Final 

      Comerón Tejero, Adolfo; Corbella Sanahuja, Ignasi; Fabregas Canovas, Francisco Javier; Mallorquí Franquet, Jordi Joan; Vall-Llossera Ferran, Mercedes Magdalena (Universitat Politècnica de Catalunya, 2020-01-15)
      Examen
      Accés restringit a la comunitat UPC

    • Examen Final 

      Fabregas Canovas, Francisco Javier (Universitat Politècnica de Catalunya, 2023-06-06)
      Examen
      Accés restringit a la comunitat UPC

    • Examen Final 

      Corbella Sanahuja, Ignasi; Fabregas Canovas, Francisco Javier; López Martínez, Carlos; Vall-Llossera Ferran, Mercedes Magdalena (Universitat Politècnica de Catalunya, 2022-01-19)
      Examen
      Accés restringit a la comunitat UPC

    • EXAMEN REAVALUACIÓ 

      Fabregas Canovas, Francisco Javier; Vall-Llossera Ferran, Mercedes Magdalena (Universitat Politècnica de Catalunya, 2022-06-28)
      Examen
      Accés restringit a la comunitat UPC

    • Examen Reavaluació 

      Fabregas Canovas, Francisco Javier (Universitat Politècnica de Catalunya, 2023-07-03)
      Examen
      Accés restringit a la comunitat UPC

    • Experimental comparison of different scattering mechanism selections for vegetation height retrieval by POLINT 

      López-Sánchez Sánchez, Juan Manuel; Fortuny Guasch, Joaquim; Siebert, Julien; Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 2000)
      Text en actes de congrés
      Accés obert
      The application of polarimetric radar interferometry to the estimation of vegetation height is studied. A comparison between different choices for the scattering mechanisms employed in the retrieval algorithm is presented. ...

    • Extraction of vegetation structure and surface parameters using polarimetric and interferometric SAR techniques 

      Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 2000)
      Text en actes de congrés
      Accés obert
      Presents different polarimetric and interferometric inversion radar approaches to extract the characteristics of vegetation and bare soil surfaces. The inversion techniques presented make use of multifrequency, radar ...

    • Forest parameter estimation in the Pol-InSAR context employing the multiplicative–additive speckle noise model 

      López Martínez, Carlos; Fabregas Canovas, Francisco Javier; Pipia, Luca (2011-09)
      Article
      Accés restringit per política de l'editorial
      This paper addresses the problem of speckle noise on single baseline polarimetric SAR interferometry (Pol-InSAR) on the basis of the multiplicative–additive speckle noise model. Considering this speckle noise model, a novel ...

    • Formación de imágenes ISAR de alta resolución 

      Fabregas Canovas, Francisco Javier; Romeu Robert, Jordi; Broquetas Ibars, Antoni (1992)
      Text en actes de congrés
      Accés obert
      This paper presents the results of ISAR processing of RCS measurements performed over a broad frequency band (12 GHz - 40 GHz). The main purpose is to reach the highest resolution in reflectivity maps in order to identify ...

    • Ground topography estimation on over forests considering polarimetric SAR interferometry 

      López Martínez, Carlos; Alonso González, Alberto; Fabregas Canovas, Francisco Javier; Papathanassiou, Kostantinos (2010)
      Text en actes de congrés
      Accés obert
      The work detailed in this paper analyzes the topographic phase retrieval process on forested areas by means of Polarimetric Interferometric SAR data. On the basis of the Random Volume over Ground scattering model, an ...

    • Ground topography retrieval on forested areas based on polarimetric SAR interferometry 

      López Martínez, Carlos; Fabregas Canovas, Francisco Javier; Alonso García, Alberto; Papathanassiou, Kostantinos (2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The work shown in this paper analyzes the topographic phase retrieval process on forested areas by means of Polarimetric Interferometric SAR (PolInSAR) data. On the basis of the Random Volume over Ground scattering model, ...

    • Ground-based polarimetric SAR interferometry for the monitoring of terrain displacement phenomena-part I: theoretical description 

      Iglesias González, Rubén; Aguasca Solé, Alberto; Fabregas Canovas, Francisco Javier; Mallorquí Franquet, Jordi Joan; Monells Miralles, Daniel; López Martínez, Carlos; Pipia, Luca (2015-03-01)
      Article
      Accés obert
      Ground-based synthetic aperture radar (SAR) (GB-SAR) sensors represent an effective solution for the monitoring of ground displacement episodes. Initially, the most GB-SAR sensors were based on vector network analyzers ...

    • Ground-based polarimetric SAR interferometry for the monitoring of terrain displacement phenomena-part II: applications 

      Iglesias González, Rubén; Aguasca Solé, Alberto; Fabregas Canovas, Francisco Javier; Mallorquí Franquet, Jordi Joan; Monells Miralles, Daniel; López Martínez, Carlos; Pipia, Luca (2015-03-01)
      Article
      Accés obert
      Urban subsidence and landslides are among the greatest hazards for people and infrastructure safety and they require an especial attention to reduce their associated risks. In this framework, ground-based synthetic aperture ...

    • High-speed focusing algorithm for circular synthetic aperture radar (C-SAR) 

      Bara Iniesta, Marc Antoni; Sagués Piella, Lluís; Paniagua Nicolás, Fernando; Broquetas Ibars, Antoni; Fabregas Canovas, Francisco Javier (IEE-INST ELEC ENG, 2000-04-30)
      Article
      Accés obert
      A new algorithm is presented which is capable of generating very fast high-resolution images for circular synthetic aperture radar (C-SAR) systems. Its main characteristic is that it allows the processing of data from such ...