Exploració per tema "Interferometria"

Ara es mostren els items 36-55 de 219

    • Back Focal Plane Interferometry for Holographic Optical Traps 

      Martínez Llinàs, Jade (Universitat Politècnica de Catalunya, 2011-03-10)
      Projecte Final de Màster Oficial
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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 ...

    • 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
      Accés obert
      Bightness-temperature retrieval techniques for synthetic aperture radiometers are reviewed. Three different approaches to combine measured visibility and antenna temperatures, along with instrument characterization ...

    • 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)
      Text en actes de congrés
      Accés obert

    • Calibration techniques of interferometric microwave receivers 

      Ortega Corral, Antonio (Universitat Politècnica de Catalunya, 2017-10-18)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      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 ...

    • Cálculo de caudales de agua extraídos del subsuelo a partir de subsidencias medidas con interferometría diferencial DInSAR 

      Rodríguez Ramos, Alberto (Universitat Politècnica de Catalunya, 2009-10)
      Tesina
      Accés obert
      La presente tesina trata de averiguar la viabilidad de poder estimar las extracciones de agua del terreno a través del análisis de los movimientos verticales del terreno. Se hará un análisis cualitativo y otro cuantitativo. ...

    • Characterization of a precise orbit determination interferometer 

      Traver Tarrés, Ignasi (Universitat Politècnica de Catalunya, 2018-02-06)
      Treball Final de Grau
      Accés obert
      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
      Accés obert
      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)
      Projecte/Treball Final de Carrera
      Accés restringit per decisió de l'autor
      [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
      Accés restringit per política de l'editorial
      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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...

    • Complex domain analysis of random volume over ground model for forest height 

      Jorge Ruiz, Jorge (Universitat Politècnica de Catalunya, 2019-05-22)
      Projecte Final de Màster Oficial
      Accés obert
      This work focuses on the analysis of X-band Interferometric Synthetic Aperture Radar (InSAR) satellite acquisitions over forested areas in Estonia with the main goal of estimating forest tree height. The objective is to ...

    • Complex light-assisted optical metrology techniques 

      Rosales Guzmán, Carmelo; Belmonte Molina, Aniceto; Pérez Torres, Juan (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The on-demand tailoring of the properties of light, such as phase, polarization or spatial shape, has completely changed the landscape of photonic-based applications. In this way, complex light fields have become an ...

    • Contribution to spatial bias mitigation in interferometric radiometers devoted to Earth observation : application to the SMOS mission 

      Wu, Lin (Universitat Politècnica de Catalunya, 2014-05-30)
      Tesi
      Accés obert
      This work has been undertaken within the frame of the FPI scholarship BES-2009-028505 of 30/07/2009, by the "Secretario de Estado de Investigación del Ministerio de Ciencia e Innovación", related to the project ...

    • Contribution to the characterization of interferometric radiometers devoted to Earth observation: application to the MIRAS/SMOS payload 

      González Gambau, Verónica (Universitat Politècnica de Catalunya, 2012-09-05)
      Tesi
      Accés obert
      The variability of soil moisture and ocean salinity controls the continuous exchange of water between the oceans, the atmosphere and the land. Therefore, the accurate and periodic measurements of these geophysical variables ...

    • Contributions to the determination of electromagnetic bias in Gnss-R altimetry 

      Ghavidel, Ali (Universitat Politècnica de Catalunya, 2015-07-14)
      Tesi
      Accés obert
      In this Ph. D. dissertation the electromagnetic bias in GNSS-R (Global Navigation Satellite Systems Reflectometry) altimetry has been studied. GNSS-R altimetry is a new type of system that uses navigation signals as signals ...

    • Control del asentamiento de los diques este y sur del Puerto de Barcelona mediante datos InSAR 

      Martínez Benjamín, Juan José; Pros Llavador, Francesc; González López, Silvia (2013)
      Text en actes de congrés
      Accés obert
      [CASTELLÀ] En este artículo se estudia la viabilidad del uso de InSAR en el control del asentamiento de los diques de reciente construcción en el Puerto de Barcelona. El análisis se realizó a partir de datos obtenidos ...

    • Cost-effective laser feedback sensor for nanometric scale acoustic perturbations 

      Jha, Ajit; Azcona Guerrero, Francisco Javier; Royo Royo, Santiago (2018-07-01)
      Article
      Accés restringit per política de l'editorial

    • Cross-talk statistics and impact in interferometric GNSS-R 

      Pascual Biosca, Daniel; Hyuk, Park; Onrubia Ibáñez, Raúl; Alonso Arroyo, Alberto; Querol Borràs, Jorge; Camps Carmona, Adriano José (2016-06-23)
      Article
      Accés obert
      This paper presents a statistical analysis of the crosstalk phenomenon in interferometric Global Navigation Satellite Systems Reflectometry (iGNSS-R). Crosstalk occurs when the Delay-Doppler Map (DDM) of a tracked satellite ...