Now showing items 1-20 of 214

    • A Ka-band Radar Interferometer: development and testing 

      Galobart Tor, Bruno (Universitat Politècnica de Catalunya / University of Massachusetts at Amherst, 2013-07-11)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   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)
      Conference report
      Restricted access - publisher's policy
      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, ...
    • 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
      Restricted access - publisher's policy
    • A new calibration technique for interferometric radiometers 

      Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Bará Temes, Francisco Javier (1998)
      Conference report
      Open Access
      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
      Open Access
      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
      Restricted access - publisher's policy
      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 novel digital IQ demodulation for interferometric radiometers 

      Corbella Sanahuja, Ignasi; Martín Neira, Manuel; Vilaseca, Roger; Catalán Artigas, Albert; Torres Torres, Francisco; Suess, Martin (Multidisciplinary Digital Publishing Institute (MDPI), 2021-03-02)
      Article
      Open Access
      In the frame of an SMOS follow-on operational mission, a new instrument design is being developed based on the lessons learned from MIRAS, the SMOS payload. To reduce hardware complexity and mass, digital In-phase Quadrature ...
    • 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
      Open Access
      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) ...
    • A persistent scatterer interferometry procedure to monitor urban subsidence 

      Crosetto, Michele; Monserrat, Oriol; Barra, Anna; Cuevas-González, Maria; Krishnakumar, Vrinda; Mróz, Marek; Crippa, Bruno (2019)
      Conference report
      Open Access
      This paper describes a Persistent Scatterer Interferometry procedure for deformation monitoring. Its more original part concerns an approach to estimate the atmospheric phase component. The procedure can be used to monitor ...
    • A Small Baseline DIFSAR Approach for Investigating Deformations on Full Resolution SAR Interferograms 

      Lanari, Ricardo; Mora Sacristan, Óscar; Manunta, Michele; Mallorquí Franquet, Jordi Joan; Berardino, P.; Sansoti, Eugenio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2004-07-31)
      Article
      Open Access
      This paper presents a differential synthetic aperture radar (SAR) interferometry (DIFSAR) approach for investigating deformation phenomena on full-resolution DIFSAR interferograms. In particular, our algorithm extends ...
    • A temporal phase coherence estimation algorithm and its application on DInSAR pixel selection 

      Zhao, Feng; Mallorquí Franquet, Jordi Joan (Institute of Electrical and Electronics Engineers (IEEE), 2019-11-01)
      Article
      Open Access
      Pixel selection is a crucial step of all advanced Differential Interferometric Synthetic Aperture Radar (DInSAR) techniques that have a direct impact on the quality of the final DInSAR products. In this paper, a full-resolution ...
    • Acquisition and processing of buildings’ vibrations using a Real-Aperture Radar, a non-invasive method 

      Alva Bañuelos, Rodrigo Esteban; González Drigo, José Ramón; Luzi, Guido; Pinzón Ureña, Luis; Pujades Beneit, Lluís (2018)
      Conference report
      Restricted access - publisher's policy
      In this paper, a simplified non-invasive method to diagnose the safety state of buildings is tested. The method is based in remote sensing measurements of the natural vibrations of actual buildings using an interferometric ...
    • Active signal repeater for interferometric precise orbit determination 

      Garcia Monterrubio, Berta (Universitat Politècnica de Catalunya, 2021-07-27)
      Bachelor thesis
      Restricted access - confidentiality agreement
    • Adaptive autofocus technique for speckle control in optical feedback interferometry 

      Atashkhooei, Reza; Royo Royo, Santiago; Azcona Guerrero, Francisco Javier (2014-09-01)
      Article
      Restricted access - publisher's policy
      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 feedback control in self-mixing interferometry using active optical elements 

      Atashkhooei, Reza; Zabit, U; Royo Royo, Santiago; Azcona Guerrero, Francisco Javier; Sergievskaya, Irina (Universidad de Murcia, 2011)
      Conference report
      Open Access
      A voltage-controlled liquid lens has been used as an adaptive optical element integrated in a conventional self-mixing interferometry setup. The lens is used to control the optical feedback level and the focus position of ...
    • Adaptive optical head for industrial vibrometry applications 

      Atashkhooei, Reza; Zabit, U; Royo Royo, Santiago; Bosch, Thierry; Bony, F. (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2011)
      Conference report
      Restricted access - publisher's policy
      A self-mixing laser interferometer has been combined with a compact and robust optical system including an adaptive optical element in the form of a voltage controllable liquid lens. The use of the liquid lens enables the ...
    • 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)
      Master thesis (pre-Bologna period)
      Open Access
      [ANGLÈS] Compensation of the distorsions introduced to the optical wavefronts by the atmosphere using the algorithm APHEFIS, developed by Dr. Dirk Giggenbach.
    • Advanced Interferometer development for precise geostationary satellite tracking 

      Albert Galí, Miquel; Broquetas Ibars, Antoni (Universitat Politècnica de Catalunya, 2021-02-10)
      Bachelor thesis
      Restricted access - confidentiality agreement
    • 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)
      Conference lecture
      Restricted access - publisher's policy
      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 ...
    • 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
      Open Access
      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 ...