Exploració per tema "Interferometria"

Ara es mostren els items 207-219 de 219

    • Técnicas de georreferenciación precisa de datos interferométricos de radar orbital y aerotransportado 

      Broquetas Ibars, Antoni (1999)
      Text en actes de congrés
      Accés obert
      The interferometric techniques allow the generation of digital elevation models (DEM) from data collected by synthetic aperture radars (SAR). In this paper a geocoding method applied to ERS-1/2 data is proposed. It is based ...

    • The microwave interferometric reflectometer. Part I: front-end and beamforming description 

      Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Camps Carmona, Adriano José; Alonso Arroyo, Alberto; Hyuk, Park (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The Microwave Interferometric Reflectometer (MIR) is a new airborne reflectometer being developed at Catalonia Polytechnic University (UPC) that uses Global Navigation Satellite Systems (GNSS) to retrieve mainly altitude ...

    • The microwave interferometric reflectometer. Part II: Back-end and processor descriptions 

      Pascual Biosca, Daniel; Onrubia Ibáñez, Raúl; Alonso Arroyo, Alberto; Hyuk, Park; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper describes the Microwave Interferometric Reflectometer (MIR) instrument back-end for GNSS reflectometry (GNSS-R) applications. MIR uses the interferometric (iGNSS-R) and conventional (cGNSS-R) techniques for ...

    • Towards atomic force microscopy measurements using differential self-mixing interferometry 

      Azcona Guerrero, Francisco Javier; Royo Royo, Santiago; Jha, Ajit (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      In this paper, we explore the possibility of joining two measurement techniques that share a similar time frame and that are interested in describing the properties of materials through the study of the micro and ...

    • Ultra-thin silver based infrared solar filter for ophtalmic lenses 

      Carrilero Carrió, Albert (Universitat Politècnica de Catalunya, 2011-12-21)
      Projecte Final de Màster Oficial
      Accés obert
      English: A silver-based transparent heat mirror for ophthalmic lenses was developed using optimal layers design techniques, to achieve high visible transparency and low solar infrared (IR) transmittance properties. After ...

    • Ultrasensitive interferometric on-chip microscopy of transparent objects 

      Terborg, Roland A.; Pello, Josselin; Mannelli, Ilaria; Pérez Torres, Juan; Pruneri, Valerio (2016-06)
      Article
      Accés obert
      Light microscopes can detect objects through several physical processes, such as scattering, absorption, and reflection. In transparent objects, these mechanisms are often too weak, and interference effects are more suitable ...

    • Underlying topography estimation and separation of scattering contributions over forests based on polInSAR data 

      López Martínez, Carlos; Alonso González, Alberto; Fabregas Canovas, Francisco Javier; Papathanassiou, Kostantinos (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The work detailed in this paper analyzes the topographic phase retrieval process on forested areas by means of Polarimetric Interferometric SAR data. On the basis of the Random Volume over Ground scattering model, an ...

    • Urban deformation monitoring using Sentinel-1 SAR data: a case study 

      Crosetto, Michele; Monserrat, Oriol; Cuevas-González, Maria; Barra, Anna; Krishnakumar, Vrinda; Crippa, Bruno (2019)
      Text en actes de congrés
      Accés obert
      This paper describes the monitoring of the deformation associated to the construction works of a tunnel. The deformation is monitored using a Persistent Scatterer Interferometry technique and Sentinel-1 SAR ...

    • Utilització de dades InSAR per a l'estudi de l'efecte de la sobrexplotació d'aqüífers en la subsidència del terreny 

      Lerin Solé, David (Universitat Politècnica de Catalunya, 2021-06-09)
      Treball Final de Grau
      Accés obert
      El control dels nivells piezomètrics, per tant saber quanta aigua tenim als aqüífers, sempre és una necessitat, en aquest moment a Catalunya es calcula mitjançant piezòmetres, en pous concrets. Per poder controlar, el ...

    • Validation of the SMOS instrument model 

      Martín-Porqueras, Fernando (Universitat Politècnica de Catalunya, 2013-07-12)
      Projecte Final de Màster Oficial
      Accés obert
      [ANGLÈS] The present work focuses on the investigations conducted in the SMOS instrument modelling. The work of this master thesis is the validation of the instrument model which it is the first step for the investigation ...

    • Vibrometría de alta resolución utilizando interferometría óptica retroalimentada diferencial por modulación electrónica 

      Jha, Ajit; Azcona Guerrero, Francisco Javier; Yáñez Alvarado, Carlos René; Royo Royo, Santiago (2015)
      Text en actes de congrés
      Accés obert
      En este artículo presentamos un nuevo método para la medición de desplazamientos con amplitud de movimiento inferior a media longitud de onda láser. El método propuesto está basado en la inducción de modulación sobre la ...

    • Viscosity and mass diffusion coefficient of ammonia/ethylammonium nitrate mixtures 

      Rives Sanz, Ronny; Salavera, Daniel; Coronas Salcedo, Alberto (International Institute of Refrigeration, 2021)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Ethylammonium nitrate shows an enhanced ammonia solubility due to the formation of strong hydrogen bonds. This protic ionic liquid also shows negligible vapour pressure and shares many properties with water. These attractive ...

    • White light interferometry for estimating the surface geometry of intraocular lenses 

      Altamar Mercado, Hernando; Vega Lerín, Fidel; Patiño Vanegas, Alberto; Marrugo Hernandez, Andrés Guillermo; Millán Garcia-Varela, M. Sagrario (Red Iberoamericana de Óptica (RIAO), 2019)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      In this work, we use low magnification microscopy and white light interferometry (WLSI) to perform 3D reconstructions of the surfaces of two monofocal intraocular lenses (IOLs). With the 3D reconstructions, we estimated ...