Exploració per tema "Interferometria"
Ara es mostren els items 36-55 de 219
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Back Focal Plane Interferometry for Holographic Optical Traps
(Universitat Politècnica de Catalunya, 2011-03-10)
Projecte Final de Màster Oficial
Accés obertEnglish: 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
(European Spatial Agengy (ESA), 1995)
Text en actes de congrés
Accés obertWhen 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
(IEEE, 2009-01)
Article
Accés obertBightness-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
(2000)
Text en actes de congrés
Accés obert -
Calibration techniques of interferometric microwave receivers
(Universitat Politècnica de Catalunya, 2017-10-18)
Treball Final de Grau
Accés restringit per decisió de l'autorAn 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
(Universitat Politècnica de Catalunya, 2009-10)
Tesina
Accés obertLa 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
(Universitat Politècnica de Catalunya, 2018-02-06)
Treball Final de Grau
Accés obertThis 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
(Optical Society of America, 2007-02-28)
Article
Accés obertIn 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
(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)
(2014-05-25)
Article
Accés restringit per política de l'editorialThis 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
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialEarth-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
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialIn 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
(Universitat Politècnica de Catalunya, 2019-05-22)
Projecte Final de Màster Oficial
Accés obertThis 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
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2018)
Text en actes de congrés
Accés restringit per política de l'editorialThe 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
(Universitat Politècnica de Catalunya, 2014-05-30)
Tesi
Accés obertThis 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
(Universitat Politècnica de Catalunya, 2012-09-05)
Tesi
Accés obertThe 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
(Universitat Politècnica de Catalunya, 2015-07-14)
Tesi
Accés obertIn 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
(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
(2018-07-01)
Article
Accés restringit per política de l'editorial -
Cross-talk statistics and impact in interferometric GNSS-R
(2016-06-23)
Article
Accés obertThis 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 ...