Exploració per tema "Radar"

Ara es mostren els items 239-258 de 322

    • PARSAR: A SAR processor implemented in a cluster of workstations 

      Martínez, A; Fraile, F; Mallorquí Franquet, Jordi Joan; Nogueira, L; Gabaldà, J; Broquetas Ibars, Antoni; González Colás, Antonio María (ESA Publications Division, 1997)
      Text en actes de congrés
      Accés obert
      A parallel SAR processor is presented in this paper. The target configuration is a cluster of UNIX workstations, available in most user sites. This fact allows to obtain an increased computing performance without the need ...

    • Performance assessment of a homodyne laser radar for surface displacement monitoring 

      Rodríguez Gómez, Alejandro Antonio; Comerón Tejero, Adolfo; Mesalles Nalda, Eloy (Spie-Int Society Optical Engineering, 2001-12-31)
      Article
      Accés obert

    • Phase codification optimization of a pulse radar 

      Martinez Torrebadella, Alexis (Universitat Politècnica de Catalunya, 2018-10-30)
      Treball Final de Grau
      Accés obert
      In this project, a study about Barker codes and poly-phase codes is done, with the goal to create a search engine, to find a poly-phase sequence with given parameters using Matlab. First of all, the basic concepts to ...

    • Phase quality optimization in Orbital Differential SAR Interferometry with fully polarimetric data 

      Monells Miralles, Daniel; Iglesias González, Rubén; Mallorquí Franquet, Jordi Joan; Fabregas Canovas, Francisco Javier; López Martínez, Carlos (IEEE, 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Orbital Differential SAR Interferometry (DInSAR) is a well-known technique to retrieve terrain deformation phenomena from wide areas with high resolution. Historically its application has been limited to single polarization ...

    • Phased-Array Antenna Calibration and Cross-polarization improvement of an X-band Weather Radar 

      Masalias Huguet, Gerard (Universitat Politècnica de Catalunya, 2015-10)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   University of Massachusetts at Amherst
      Dual-polarized phased-array radars used for weather retrieval purposes is an emerging tendency over the last few years. The dual-polarization technology provides an expanded range of weather products and the reliability ...

    • Planetary boundary layer height variability over Athens, Greece, based on the synergy of Raman lidar and radiosonde data: application of the Kalman filter and other techniques (2011-2016) 

      Alexiou, Dimitrios; Kokkalis, Panagiotis; Papayannis, Alexandros; Rocadenbosch Burillo, Francisco; Argyrouli, Athina; Tsaknakis, Georgios; Tzanis, Chris G. (EDP Sciences, 2017)
      Comunicació de congrés
      Accés obert
      The temporal evolution of the Planetary Boundary Layer height over Athens, Greece for a 5-year period (2011-2016) is presented. Using the EOLE Raman lidar system, the range-corrected lidar signals were selected around 12:00 ...

    • Polarimetric coherence optimization for interferometric differential applications 

      Pipia, Luca; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; López Martínez, Carlos; Mallorquí Franquet, Jordi Joan (2009)
      Text en actes de congrés
      Accés obert
      In this paper, the potentials of polarimetric coherenceoptimization techniques for differential interferometric SAR (DInSAR) applications are examined. For this purpose, the cutting-edge approaches available in the ...

    • Polarimetric radar interferometry for improved mine detection and surface clutter rejection 

      Sagués Piella, Lluís; López Márquez, Miguel Ángel; Fortuny, Joaquim; Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni; Sieber, Alois (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-06-30)
      Article
      Accés obert
      A recently developed technique, polarimetric radar interferometry, is applied to tackle the problem of the detection of buried objects embedded in surface clutter. An experiment with a fully polarimetric radar in an anechoic ...

    • Polarimetric speckle noise effects in quantitative physical parameters retrieval 

      López Martínez, Carlos; Hajnsek, I.; Lee, J. S.; Pottier, Eric; Fabregas Canovas, Francisco Javier (IEE-INST ELEC ENG, 2006-06-30)
      Article
      Accés obert
      Quantitative estimation of physical parameters of the Earth's surface is currently an active area of research. Multidimensional synthetic aperture radar (SAR) systems appear in this framework as a tool capable of performing ...

    • Polarimetric techniques for SAR contrast and resolution enhancement 

      López Martínez, Carlos; Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni; Krogager, E (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Text en actes de congrés
      Accés obert

    • Polarimetric temporal analysis of urban environments with a ground-based SAR 

      Pipia, Luca; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; López Martínez, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2013-04)
      Article
      Accés restringit per política de l'editorial
      Revisiting time constitutes a key constraint for continuous monitoring activities based on space- and airborne synthetic aperture radar (SAR) acquisitions. Conversely, the employment of terrestrial platforms overcomes ...

    • Post-failure evolution analysis of a rainfall-triggered landslide by multi-temporal interferometry SAR approaches integrated with geotechnical analysis 

      Confuorto, Pierluigi; Di Martire, Diego; Centolanza, Giuseppe; Iglesias González, Rubén; Mallorquí Franquet, Jordi Joan; Novellino, Alessandro; Plank, Simon; Ramondini, Massimo; Thuro, Kurosch; Calcaterra, Domenico (2017-01-01)
      Article
      Accés obert
      Persistent Scatterers Interferometry (PSI) represents one of the most powerful techniques for Earth's surface deformation processes' monitoring, especially for long-term evolution phenomena. In this work, a dataset of 34 ...

    • Precise geometry simulation of interferometric SAR signal for air- and spaceborne sensors 

      Bara, M; Broquetas Ibars, Antoni; Closa Domínguez, Josep M. (IEEE Piscataway, 2000)
      Text en actes de congrés
      Accés obert
      A complete interferometric synthetic aperture radar (SAR) simulator has been developed. It achieves precise results by using geodetic models to represent the Earth's shape, and considering SAR effects such as range migration, ...

    • Procesado de imágenes SAR (Radar de Apertura Sintética) aerotransportado con compensación de movimiento 

      Bara Iniesta, Marc Antoni; Javier, Cachón; Broquetas Ibars, Antoni; Carlos, Juan Crespo (Iberdrola Instituto Tecnológico, 1998)
      Text en actes de congrés
      Accés obert
      An operational processor to obtain high resolution radar images of the Earth surface from an airborne platform is presented. The paper describes the problem, its geometry and the steps to obtain a reflectivity image from ...

    • Prospección con radar de subsuelo para mejorar la nanozonificación sísmica de ciudades densas: aplicación en grandes calles de Barcelona 

      Muñoz Alba, Mercedes (Universitat Politècnica de Catalunya, 2011-10-21)
      Projecte/Treball Final de Carrera
      Accés restringit per decisió de l'autor
      Los estudios de zonificación sísmica son una de las evaluaciones necesarias para analizar riesgo sísmico. Mediante los mismos se definen zonas en las cuales la respuesta del suelo al paso de las ondas sísmicas es similar. ...

    • Prototipo de un dispositivo de transporte para equipos GPR 

      Borrell Fernández, Jordi (Universitat Politècnica de Catalunya, 2009-01-12)
      Projecte/Treball Final de Carrera
      Accés obert
      El contingut d’aquest projecte es basa en el redisseny d’un dispositiu per al transport de un georadar. Es parteix d’un dispositiu ja dissenyat i s’estudia les mancances tècniques i de confort d’aquest. Seguidament es ...

    • Proyecto preliminar de una antena ranurada para RADAR de basura espacial 

      Martín Gallego, Raul (Universitat Politècnica de Catalunya, 2015-01-19)
      Treball Final de Grau
      Accés restringit per decisió de l'autor

    • Quality control of Doppler spectra from a vertically pointing, S-band profiling radar 

      Belak, Susan L.; Tanamachi, Robin; Asel, Matthew L.; Dennany, Grant; Gnanasambandam, Abhiram; Frasier, Steve; Rocadenbosch Burillo, Francisco (American Meteorological Society, 2024-02-21)
      Article
      Accés restringit per política de l'editorial
      This study describes a novel combination of methods to remove spurious spectral peaks, or “spurs,” from Doppler spectra produced by a vertically pointing, S-band radar. The University of Massachusetts S-band frequency-modulated, ...

    • El Radar : de dónde viene y hacia dónde va 

      Broquetas Ibars, Antoni (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1994)
      Article
      Accés obert

    • Radar biestàtic sincronitzat per Hitchhiking 

      Pous i Sabadí, Carles; Aguasca Solé, Alberto; Elias Fusté, Antoni; Broquetas Ibars, Antoni (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1993)
      Article
      Accés obert