Exploració per tema "Interferometry"

Ara es mostren els items 190-209 de 238

    • Quantization and sampling effects on microwave radiometry RFI mitigation algorithms 

      Díez García, Raúl; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Radio Frequency Interference (RFI) is an increasing problem in Microwave Radiometry, particularly for Earth Observation. It has been observed at L-band in ESA's SMOS (Soil Moisture and Ocean Salinity) Earth Explorer mission, ...

    • Quantum random number generation based on vacuum field fluctuations 

      Abellán, Carlos, 1990- (Universitat Politècnica de Catalunya, 2013-09-09)
      Projecte/Treball Final de Carrera
      Accés obert
      [ANGLÈS] Random numbers are extensively used in a broad range of applications. Nevertheless, there are two main markets from a commercial point of view: (i) secure communications and (ii) stochastic simulation. According ...

    • Radiometric performance of SMOS full polarimetric imaging 

      Wu, Lin; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Durán Martínez, Israel; Vall-Llossera Ferran, Mercedes Magdalena; Camps, Adiano; Delwart, Steven; Martín Neira, Manuel (2013-11)
      Article
      Accés restringit per política de l'editorial
      This work has been conducted in the framework of several projects devoted to assess the performance of the Soil Moisture and Ocean Salinity (SMOS) mission full-pol measurement mode. Since its launch in November 2009, SMOS ...

    • Radiometric resolution of motion-induced synthetic aperture radiometer 

      Hyuk, Park; Camps Carmona, Adriano José; Choi, Min Gyu; Kim, Yong-Hoon (2011-07)
      Article
      Accés restringit per política de l'editorial
      The radiometric resolution of a motion-induced synthetic aperture radiometer (MISAR) is analytically obtained from the standard deviation of a baseline response, an observation scenario, and the imaging method of the MISAR. ...

    • Radiometric Sensitivity Computation in Aperture Synthesis Interferometric Radiometry 

      Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Torres Torres, Francisco (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-03-31)
      Article
      Accés obert
      This paper is concerned with the radiometric sensitivity computation of an aperture synthesis interferometric radiometer devoted to Earth observation. The impact of system parameters and the use of simultaneous redundant ...

    • Range spectral filtering in SAR interferometry: methods and limitations 

      Mestre Quereda, Alejandro; López Sánchez, Juan Manuel; Mallorquí Franquet, Jordi Joan (2022-11-10)
      Article
      Accés obert
      A geometrical decorrelation constitutes one of the sources of noise present in Synthetic Aperture Radar (SAR) interferograms. It comes from the different incidence angles of the two images used to form the interferograms, ...

    • Receiver specifications of the MIRAS demonstrator 

      Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Camps Carmona, Adriano José; Bará Temes, Francisco Javier; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Borges, A. (SPIE The International Society for Optical Engineering, 2000)
      Text en actes de congrés
      Accés obert
      Improved weather forecast and climate monitoring rely on a better quantification of soil moisture (SM) and sea surface salinity (SSS). The most accurate way to measure them from remote sensors is by using radiometers at L ...

    • Refining the methodology to correct the faraday rotation angle from SMOS measurements 

      Rubino, Roselena; Duffo Ubeda, Núria; González Gambau, Verónica; Corbella Sanahuja, Ignasi; Durán Martínez, Israel; Torres Torres, Francisco; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this work, a refined methodology to correct the Faraday Rotation angle (FRA) for the SMOS mission is proposed. The method is based on calculating the FRA using the SMOS full-pol radiometric data to obtain VTEC maps ...

    • Reliability analysis in aperture synthesis interferometric radiometers: application to L-Band microwave imaging radiometer with aperture synthesis instruments 

      Vall-Llossera Ferran, Mercedes Magdalena; Duffo Ubeda, Núria; Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Bará Temes, Francisco Javier (AMER GEOPHYSICAL UNION, 2001-03-31)
      Article
      Accés obert
      The Microwave Imaging Radiometer with Aperture Synthesis (MIRAS) instrument will be the first radiometer using aperture synthesis techniques for Earth observation. It will be boarded in the Soil Moisture and Ocean Salinity ...

    • Residual flatness error correction in three dimensional imaging confocal microscopes 

      Martínez Marín, Pol (Universitat Politècnica de Catalunya, 2018-07-06)
      Projecte Final de Màster Oficial
      Accés obert
      Imaging Confocal Microscopes (ICM) are highly used for the assessment of three-dimensional measurement of technical surfaces. The benefit of an ICM in comparison to an interferometer is the use of high numerical aperture ...

    • RF to microwave interferometer for cell detection in a microfluidic channel 

      Jiménez de la Cruz, Daniel (Universitat Politècnica de Catalunya, 2015-07)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   Katholieke Universiteit te Leuven
      This thesis presents a two port connectorized RF to microwave interferometer for single cell detection and characterization in a microfluidic channel. To allow setting the operational frequency within a broad bandwidth ...

    • RGBW LED light source for microscopy: Study and Design 

      Bermúdez Porras, Carlos (Universitat Politècnica de Catalunya, 2011-09-07)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      English: The aim of this study is to investigate and improve an existing confocal and interferometric dual profiler system with a new light source able to provide both RGB signals for confocal imaging, phase shift ...

    • Runout tracking in electric motors using self-mixing interferometry 

      Atashkhooei, Reza; Urresty Betancourt, Julio César; Royo Royo, Santiago; Riba Ruiz, Jordi-Roger; Romeral Martínez, José Luis (IEEE Industrial Electronics Society, 2014-01-17)
      Article
      Accés restringit per política de l'editorial

    • SAR interferometric coherence in wide band systems 

      Sagués Piella, Lluís; Bara Iniesta, Marc Antoni; Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni (VSP BV, 2000-02-28)
      Article
      Accés obert
      This paper presents a study of the interferometric coherence aimed to the understanding of the main sources of phase error of an operative wide band system. This objective is accomplished by finding a theoretical expression ...

    • Selección de píxeles mediante correlación espectral entre Sublooks para DInSAR 

      Iglesias González, Rubén (Universitat Politècnica de Catalunya, 2008-10-29)
      Projecte/Treball Final de Carrera
      Accés obert

    • Sentinel-1 A-DInSAR approaches to map and monitor ground displacements 

      Krishnakumar, Vrinda; Qiu, Z; Monserrat Hernández, Oriol; Barra, Anna; López-Vinielles, Juan; Gao, Qi; Palamá, Riccardo; Gili Ripoll, José Antonio (Multidisciplinary Digital Publishing Institute (MDPI), 2021-03-16)
      Article
      Accés obert
      Persistent scatterer interferometry (PSI) is a group of advanced interferometric synthetic aperture radar (SAR) techniques used to measure and monitor terrain deformation. Sentinel-1 has improved the data acquisition ...

    • Sentinel-1 data exploitation for terrain deformation monitoring 

      Krishnakumar, Vrinda (Universitat Politècnica de Catalunya, 2022-09-29)
      Tesi
      Accés obert
      Persistent Scatterer interferometry (PSI) is a group of advanced differential interferometric Synthetic Aperture Radar (SAR) techniques used to measure and monitor terrain deformation. Sentinel-1 has improved the data ...

    • Side-lobe cancelation in DInSAR pixel selection with SVA 

      Iglesias González, Rubén; Mallorquí Franquet, Jordi Joan (2013-07)
      Article
      Accés restringit per política de l'editorial
      Synthetic aperture radar (SAR) systems are inherently band limited in both range and azimuth, and hence, the point spread function (PSF) has the shape of a bidimensional sinc function. In addition, all SAR images are ...

    • Simulation and analysis of GNSS-R composite waveforms using GPS and Galileo signals 

      Pascual Biosca, Daniel; Hyuk, Park; Camps Carmona, Adriano José; Alonso Arroyo, Alberto; Onrubia Ibáñez, Raúl (2014-05-01)
      Article
      Accés restringit per política de l'editorial
      Nowadays, several global navigation satellite system (GNSS) services coexist at L-band and some more will be available in the near future. These new signals were originally conceived to enhance the location accuracy, but ...

    • Simultaneous tracking and RSS model calibration by robust filtering 

      Castro Arvizu, Juan Manuel; Vila Valls, Jordi; Closas, Pau; Fernández Rubio, Juan Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Received Signal Strength (RSS) localization is widely used due to its simplicity and availability in most mobile devices. The RSS channel model is defined by the propagation losses and the shadow fading. These parameters ...