Exploració per tema "Interferometry"

Ara es mostren els items 1-20 de 168

  • Adaptive autofocus technique for speckle control in optical feedback interferometry 

    Atashkhooei, Reza; Royo Royo, Santiago; Azcona Guerrero, Francisco Javier (2014-09-01)
    Article
    Accés restringit per política de l'editorial
    An adaptive autofocus technique for the control of speckle effect in optical feedback interferometry (OFI) is discussed. The beam spot size effect over the OFI signal is presented, justifying the proposed approach. An ...

  • Adaptive optics without wave-front sensor using the APHEFIS (Adaptive Optics by Phase Estimation from Focal Intensity Speckles) algorithm 

    Muñoz Fuentes, Manuel (Universitat Politècnica de Catalunya, 2012-07-19)
    Projecte/Treball Final de Carrera
    Accés obert
    [ANGLÈS] Compensation of the distorsions introduced to the optical wavefronts by the atmosphere using the algorithm APHEFIS, developed by Dr. Dirk Giggenbach.

  • Advances in the MIR instrument: integration, control subsystem and analysis of the flight dynamics for beamsteering purposes 

    Onrubia Ibáñez, Raúl; Garrucho, Lidia; Pascual Biosca, Daniel; Hyuk, Park; Querol Borràs, Jorge; Alonso Arroyo, Alberto; Camps Carmona, Adriano José (2015)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    The MIR (Microwave Interferometric Reflectometer) is a new dual frequency Global Navigation Satellite Systems Re- flectometry (GNSS-R) instrument that implements conventional and interferometric reflectometry, both with ...

  • A Ka-band Radar Interferometer: development and testing 

    Galobart Tor, Bruno (Universitat Politècnica de Catalunya / University of Massachusetts at Amherst, 2013-07-11)
    Projecte/Treball Final de Carrera
    Accés obert
    Realitzat a/amb:  University of Massachusetts at Amherst
    [ANGLÈS] Radar interferometry is a remote sensing technique that consists in transmitting a signal and measuring the phase difference of the reflected signal between two antennas separated by a baseline. This phase difference ...

  • A maximum likelihood analysis of the RVoG model for forestry studies in polarimetric SAR interferometry 

    López Martínez, Carlos; Alonso González, Alberto (European Space Agency (ESA), 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This work analyses the validity of the RVoG model as- sumption in case of PolInSAR data in forestry analy- sis. In order to assure that the interferometric coherence describes a line, as imposed by the RVoG model, ...

  • Anàlisi interferomètric de la conca potàssica catalana 

    Rodríguez Quipusco, Juan (Universitat Politècnica de Catalunya, 2017-06)
    Treball Final de Grau
    Accés restringit per decisió de l'autor
    Aquest treball consisteix en l’estudi de subsidència amb el processat d’imatges amb el mètode DInSAR de les zones de Sallent i Súria on es du a terme una activitat minera subterrània. Les dades de partida que es faran ...

  • Anàlisis de les interferències de la xarxa LTE sobre el servei de radiodifusió de TDT 

    Martinez Pla, Joan (Universitat Politècnica de Catalunya, 2012-07)
    Projecte/Treball Final de Carrera
    Accés obert
    [ANGLÈS] Co-channel interference analysis of an implementation of an LTE network broadcasting on the DTT network of Abertis Telecom, mainly in the channels 60 and 59.

  • Análisis e integración de un radiómetro de apertura sintética 

    Canales Contador, Francisco José (Universitat Politècnica de Catalunya, 2009-06-10)
    Projecte/Treball Final de Carrera
    Accés obert
    En las últimas décadas, ha habido un creciente interés en la determinación de algunos parámetros como la salinidad y altura de la superficie marina (SSS y SSH), o la humedad del suelo. Algunas de estas variables son ...

  • Analisys of noise-injection networks for interferometric-radiometer calibration 

    Corbella Sanahuja, Ignasi; Camps Carmona, Adriano José; Torres Torres, Francisco; Bará Temes, Francisco Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-04-30)
    Article
    Accés obert
    The spatial resolution of current space-borne Earth observation radiometers is limited by the physical antenna aperture. This is especially critical at L-band, which exhibits high sensitivity to soil moisture and sea surface ...

  • Analysis and control of speckle effects in self-mixing interferometry 

    Atashkhooei, Reza; Royo Royo, Santiago; Azcona Guerrero, Francisco Javier; Zabit, U (2011)
    Text en actes de congrés
    Accés restringit per política de l'editorial

  • Analysis and design of an interferometer for geostationary synthetic aperture radars orbit determination 

    Grimaldo Sánchez, Germán Angel (Universitat Politècnica de Catalunya, 2015-07)
    Projecte/Treball Final de Carrera
    Accés obert
    The industry of remote sensing has nowadays strongly developed systems, which are versatile and adaptable, however they are not optimal for certain applications. With more than enough reason from it, a new technology of ...

  • Analysis and mitigation of the reconstruction error in interferometric radiometry 

    Díez García, Raul (Universitat Politècnica de Catalunya, 2014-12-05)
    Projecte/Treball Final de Carrera
    Accés obert
    [ANGLÈS] The European Space Agency (ESA) Soil Moisture and Ocean Salinity mission (SMOS) provides continuous global maps of soil moisture and ocean surface salinity. Its payload MIRAS (Microwave Imaging Radiometer with ...

  • Analysis, design and implementation of a compact interferometer for geostationary orbital tracking 

    Martin Fuster, Roger (Universitat Politècnica de Catalunya, 2016-05-11)
    Projecte/Treball Final de Carrera
    Accés restringit per decisió de l'autor
    Future geostationary radar systems will require the satellite orbit modeling with precisions in the order of the radar wavelength. Using interferometric techniques it is possible to determine satellite angular observables ...

  • Analysis of array distortion in a microwave interferometric radiometer: Application to the GeoSTAR project 

    Torres Torres, Francisco; Tanner, Alan B.; Brown, S. T.; Lambrigsten, Bjorn H. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-07-31)
    Article
    Accés obert

  • Analysis of time series obtained with Sentinel-1: potential applications 

    Parella Lázaro, Joan (Universitat Politècnica de Catalunya, 2018-05-18)
    Treball Final de Grau
    Accés obert

  • A nanometric displacement measurement system using differential optical feedback interferometry 

    Azcona Guerrero, Francisco Javier; Atashkhooei, Reza; Royo Royo, Santiago; Méndez Astudillo, Jorge; Jha, Ajit (2013-11-01)
    Article
    Accés restringit per política de l'editorial

  • A new calibration technique for interferometric radiometers 

    Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Bará Temes, Francisco Javier (1998)
    Text en actes de congrés
    Accés obert
    This paper presents a new method for receiver calibration of interferometric radiometers. It is based on the distributed noise injection mechanism and it consists of fully calibrating the baseline error terms of the central ...

  • A new method for the acquisition of arterial pulse wave using self-mixing interferometry 

    Arasanz Tena, Andrés; Azcona Guerrero, Francisco Javier; Royo Royo, Santiago; Jha, Ajit; Pladellorens Mallofré, Josep (2014-11-01)
    Article
    Accés obert
    In this paper we present a technique based on self-mixing interferometry as a method for the acquisition and reconstruction of the arterial pulse wave. A modification of the classic fringe counting reconstruction algorithm ...

  • A new space technology for ocean observation: the SMOS mission 

    Font Ferré, Jordi; Ballabrera Poy, Joaquim; Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Durán Martínez, Israel; Emelianov Kolomitski, Mikhail; Enrique González, Luis; Fernández Gallego, Pedro; Gabarró Prats, Carolina; González, Cristina; González, Veronica; Gourrion, J.; Guimbard, S.; Hoareau, N.; Julià, A; Kalaroni, S.; Konstantinidou, Anna; Aretxabaleta, L.; Martínez, Justino; Miranda, Jorge Miguel; Monerris Belda, Alessandra; Montero, Sergio; Mourre, B.; Pablos Hernández, Miriam; Pérez Villar, Fernando; Piles Guillem, Maria; Portabella, M.; Sabia, R.; Salvador, Joaquin; Talone, Marco; Torres Torres, Francisco; Turiel Martínez, Antonio; Vall-Llossera Ferran, Mercedes Magdalena; Villarino Villarino, Ramón (2012)
    Article
    Accés restringit per política de l'editorial
    Capability for sea surface salinity observation was an important gap in ocean remote sensing in the last few decades of the 20th century. New technological developments during the 1990s at the European Space Agency led to ...

  • A performance evaluation of SAR-GMTI missions for maritime applications 

    Makhoul Varona, Eduardo; Broquetas Ibars, Antoni; Ruiz Rodon, Josep; Zhan, Yu; Ceba Vega, Francisco (Institute of Electrical and Electronics Engineers (IEEE), 2015-05-01)
    Article
    Accés obert
    This paper proposes a new optimized multichannel synthetic aperture radar (SAR) configuration, based on receiving antennas with nonuniformly displaced phase centers, intended for ground moving target indication (GMTI) ...