Exploració per tema "Interferometry"

Ara es mostren els items 157-176 de 238

    • Nanostep height measurement via spatial mode projection 

      Hermosa, Nathaniel; Rosales Guzmán, Carmelo; Pereira, S. F.; Pérez Torres, Juan (2014-01-15)
      Article
      Accés obert
      We demonstrate an optical scheme for measuring the thickness of thin nanolayers with the use of light beam ’ s spa- tial modes. The novelty in our scheme is the projection of the beam reflected by the sample onto a ...

    • Navigation systems requirements for airborne interferometric SAR platforms 

      Bara, M; Monné, J; Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Text en actes de congrés
      Accés obert
      It is well known that by means of airborne interferometric SAR systems it is possible to generate high precision digital elevation models (DEM), although these platforms are seriously affected by motion instabilities. These ...

    • Nearly zero inclination geosynchronous SAR mission analysis with long integration time for earth observation 

      Ruiz Rodon, Josep; Broquetas Ibars, Antoni; Makhoul Varona, Eduardo; Monti Guarnieri, Andrea; Rocca, Fabio (Institute of Electrical and Electronics Engineers (IEEE), 2014-10-01)
      Article
      Accés restringit per política de l'editorial
      In this paper, the performance of a nearly zero inclination and low eccentricity geosynchronous synthetic aperture radar (GEOSAR) mission for midlatitude (30 degrees-60 degrees) Earth observation is analyzed. The slow ...

    • New interferometric label-free biosensing system for food allergy diagnostics in biophotonic sensing cells 

      López Espinosa, Rocío; Garrido Arandia, María; Romero Sahagún, Alejandro; Herreros, P.; Tramarin, L.; Laguna, M. F.; Díaz Perales, Araceli; Holgado Bolaños, Miguel (2021-05-13)
      Comunicació de congrés
      Accés obert

    • New methodology for the Faraday rotation angle retrieval in the SMOS field of view 

      Rubino, Roselena; Duffo Ubeda, Núria; González Gambau, Verónica; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      In this work, a new methodology to estimate the Faraday Rotation Angle (FRA) from SMOS full-pol brightness temperature is presented. This approach is focused on retrieving the Vertical Total Electron Content (VTEC) and ...

    • Nonlinear optical properties of organo-metallic films 

      Mariano Juste, Marina (Universitat Politècnica de Catalunya, 2009-07-09)
      Projecte Final de Màster Oficial
      Accés obert
      Joining organic molecules and metallic nanoparticles into coupled heterostruc- tures allows tuning their optical properties and o®ers novel possibilities for manipulating their emission patterns. This Master Thesis is ...

    • Obtenció i integració del model SMOS de l'oceà creat pel Barcelona Expert Center (BEC) 

      Hellín Regany, Artur (Universitat Politècnica de Catalunya, 2021-05-27)
      Treball Final de Grau
      Accés obert
      Obtaining global terrestrial data in real time has become one of the most powerful scientific challenges of today and using satellites and nano satellites we can receive the necessary information to solve this task. In ...

    • Obtención de modelos digitales del terreno y detección de pequeños movimientos de la superficie terrestre mediante interferometría radar desde satélite 

      Broquetas Ibars, Antoni (1997)
      Text en actes de congrés
      Accés obert
      La interferometría SAR es una técnica que mediante la combinación coherente de imágenes radar de alta resolución de la superficie terrestre permite obtener patrones de interferencia de fase, los interferogramas, directamente ...

    • On-ground characterization of the SMOS payload 

      Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; Martín Neira, Manuel; González Gambau, Veronica; Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena (IEEE Press. Institute of Electrical and Electronics Engineers, 2009-09)
      Article
      Accés obert
      The on-ground characterization of the synthetic aperture radiometer onboard the Soil Moisture and Ocean Salinity mission is described. Characterization includes basic functionality, internal calibration, thermal cycling, ...

    • Optical coherence tomography with a nonlinear interferometer 

      Sendra Molins, Lluc (Universitat Politècnica de Catalunya, 2018-07-17)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Institut de Ciències Fotòniques (ICFO)
      We derive what is the signal and the sensitivity of a nonlinear interferometer (Mach-Zehnder or Michelson), that is a novel approach to perform Optical Coherence Tomography (OCT). The physical idea behind this goes back ...

    • Optical coherence tomography with nonlinear interferometers 

      Kirchner Sala, Helena (Universitat Politècnica de Catalunya, 2021-07-13)
      Treball Final de Grau
      Accés obert
      In recent years, quantum properties of light are opening the door to new applications, especially in communications and high-resolution probing and imaging. Optical coherence tomography (OCT) is an imaging technique ...

    • Optical feedback flowmetry: impact of particle concentration on the signal processing method 

      Atashkhooei, Reza; Ramírez Miquet, Evelio E.; Moreira, Raul da Costa; Quotb, Adam; Royo Royo, Santiago; Perchoux, Julien (2017-12-11)
      Article
      Accés obert
      IEEE Optical feedback interferometry (OFI) based flowmetry enables simple, robust, self-aligned and low cost systems to measure the fluid flow velocity with reasonable accuracy. The particle concentration in the fluid ...

    • Optical phase control for interferomètric Nera-Field optics applications 

      Golvano Escobal, Irati (Universitat Politècnica de Catalunya, 2011-07-15)
      Projecte Final de Màster Oficial
      Accés obert
      English: The interest for studying metallic nanostructures is increasingly attracting to the scientific community. Integrating a near-field microscopy in an heterodyne interferometer, the dynamic properties of light ...

    • Optical signal processor for millimeter-wave interferometric radiometry 

      Nova Lavado, Enrique; Romeu Robert, Jordi; Capdevila Cascante, Santiago; Torres Torres, Francisco; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2014-05)
      Article
      Accés restringit per política de l'editorial
      In interferometric radiometry, the correlations between all pairs of radio-frequency (RF) receivers must be performed in order to obtain the scene visibilities. This represents a cumbersome problem in passive imaging where ...

    • Optical technologies for the improvement of skin cancer diagnosis: a review 

      Rey Barroso, Laura; Peña Gutiérrez, Sara; Yáñez Alvarado, Carlos René; Burgos Fernández, Francisco Javier; Vilaseca Ricart, Meritxell; Royo Royo, Santiago (Multidisciplinary Digital Publishing Institute (MDPI), 2021-01-02)
      Article
      Accés obert
      The worldwide incidence of skin cancer has risen rapidly in the last decades, becoming one in three cancers nowadays. Currently, a person has a 4% chance of developing melanoma, the most aggressive form of skin cancer, ...

    • Optimization and performance analysis of interferometric GNSS-R altimeters: application to the PARIS IoD mission 

      Camps Carmona, Adriano José; Hyuk, Park; Valencia Domènech, Enric; Pascual Biosca, Daniel; Martín Alemany, Francisco; Rius Jordán, Antonio; Ribó Vedrilla, Serni; Benito, Javier; Andres-Beivide, Ana; Saameno, Paula; Staton, Gavin; Martín Neira, Manuel; D'Addio, Salvatore; Willemsen, Philip (2014-05-01)
      Article
      Accés restringit per política de l'editorial
      Reflectometry using Global Navigation Satellite System's signals (GNSS-R) of opportunity was originally conceived in the early 1990 s for mesoscale altimetry, and since then, many studies have shown its applicability to ...

    • Performance characterization of an optical profiler through the measurement of the linearity deviations of the scanner 

      Arbide Nieto, Ander (Universitat Politècnica de Catalunya, 2018-07-06)
      Projecte Final de Màster Oficial
      Accés obert
      Nowadays the determination of the accuracy and repeatability of an optical profiler is done by performing several repetitions of a step height measurement and calculating the accuracy error (mean) and the repeatability ...

    • Permanent SAR observation of water cycle parameters on vegetated soil 

      Mas i Méndez, Mireia (Universitat Politècnica de Catalunya, 2021-07-07)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat
      HYDROSOIL radar continuous monitoring campaigns over agricultural fields provided relevant data to understand atmospheric conditions impact over radar backscattering and coherence results. Radar backscattering magnitude ...

    • PH-RLS: A parallel hybrid recursive least square algorithm for self-mixing interferometric laser sensor 

      Khan, Zohaib A.; Hussain, Tassadaq; Zabit, Usman; Usman, Muhammad; Ayguadé Parra, Eduard (2021-10)
      Article
      Accés obert
      The authors present the parallel-hybrid recursive least square (PH-RLS) algorithm for an accurate self-mixing interferometric laser vibration sensor coupled with an accelerometer under industrial conditions. Previously, ...

    • Phase error assessment of MIRAS/SMOS by means of redundant space calibration method 

      Dávila Faúndez, Rubén (Universitat Politècnica de Catalunya, 2011-01-12)
      Projecte/Treball Final de Carrera
      Accés obert
      Català: L'objectiu del projecte és estudiar l'error de fase de la càrrega d'SMOS, l'instrument MIRAS, desenvolupant un mètode anomenat Calibració per Espais Redundants (RSC). Aquest mètode està basat en l'ús de les mostres ...