Exploració per tema "Radiation--Measurement"

Ara es mostren els items 21-33 de 33

    • MERITXELL: the Multifrequency Experimental Radiometer with Interference Tracking for Experiments over Land and Littoral—instrument description, calibration and performance 

      Querol Borràs, Jorge; Tarongí Bauzá, José Miguel; Forte Véliz, Giuseppe Francesco; Gómez López, José Javier; Camps Carmona, Adriano José (2017-05-10)
      Article
      Accés obert
      MERITXELL is a ground-based multisensor instrument that includes a multiband dual-polarization radiometer, a GNSS reflectometer, and several optical sensors. Its main goals are twofold: to test data fusion techniques, and ...

    • Mesura del nivell de radiació de telèfons mòbils 

      Esteve Do Nascimento, Aleix (Universitat Politècnica de Catalunya, 2016-06-10)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      En aquest projecte final de grau s’estudiarà la radiació que emeten els telèfons mòbils mentre realitzen trucades a altres dispositius. S’analitzaran 3 telèfons de diferents marques, d’aquesta manera es podrà comparar la ...

    • Mitigation of cross-polar antenna pattern errors in SMOS: simplified approach 

      Durán Martínez, Israel; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Lin, Wu; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper analyzes a simplified image reconstruction method that exclusively takes into account the dominant antenna pattern terms to model image inversion artifacts and mitigate SMOS polarimetric spatial bias over the ...

    • Obtención de imágenes de la superficie terrestre y marina mediante radiometría de microondas 

      Broquetas Ibars, Antoni; Jofre Roca, Lluís (1991)
      Text en actes de congrés
      Accés obert

    • Optimum intercalibration time in synthetic aperture interferometric radiometers: application to SMOS 

      Ramos Pérez, Isaac; Bosch Lluís, Xavier; Camps Carmona, Adriano José; González Gambau, Veronica; Rodríguez Álvarez, Nereida; Valencia Domènech, Enric; Hyuk, Park; Vall-Llossera Ferran, Mercedes Magdalena; Forte Veliz, Giuseppe Francesco (2012)
      Article
      Accés restringit per política de l'editorial
      Interpolation strategies for calibration of the Soil Moisture and Ocean Salinity (SMOS) mission of the European Space Agency are tested and compared. Calibration strategy (how and how often) is critical in achieving the ...

    • Performance assessment of time–frequency RFI mitigation techniques in microwave radiometry 

      Querol Borràs, Jorge; Onrubia Ibáñez, Raúl; Alonso Arroyo, Alberto; Pascual Biosca, Daniel; Hyuk, Park; Camps Carmona, Adriano José (2017-02-14)
      Article
      Accés obert
      Radio–frequency interference (RFI) signals are a well-known threat for microwave radiometry (MWR) applications. In order to alleviate this problem, different approaches for RFI detection and mitigation are currently under ...

    • Practical issues on SMOS single antenna patterns 

      Wu, Lin; Durán Martínez, Israel; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Closa, Josep; Manrique, Rodrigo; Garcia, Quiterio; Oliva Balagué, Roger; Martín Neira, Manuel (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper provides a wrap-up of some of the activities undertaken by SMOS L1 team to fine tune the instrument calibration and modeling that eventually has resulted into a SMOS full-polarimetric measurement and image ...

    • Quantifying and reducing uncertainty in microwave vegetation optical depth and soil moisture retrievals 

      Feldman, Andrew F.; Chaparro Danon, David; Entekhabi, Dara (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Soil moisture and vegetation optical depth (VOD; related to vegetation water content) retrieved from SMAP and SMOS satellites are widely used for a range of hydrosphere and biosphere applications. However, while soil ...

    • SMOS CP34 soil moisture and ocean salinity maps 

      Font Ferré, Jordi; Gabarró Prats, Carolina; Ballabrera Poy, Joaquim; Turiel Martínez, Antonio; Martínez, Justino; Umbert, M.; Pérez, Francisco C.; Hoareau, N.; Portabella, M.; González Gambau, Veronica; Gourrion, J.; Guimbard, S.; Piles Guillem, Maria; Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents the soil moisture and ocean salinity maps from the SMOS mission generated operationally by the Spanish SMOS Level 3 and 4 data processing center (CP34) and experimentally by the SMOS Barcelona Expert ...

    • SMOS L3 salinity performances at decreasing sea surface temperature 

      Sabia, R.; Fernández Prieto, D.; Portabella, M.; Gourrion, J.; Font Ferré, Jordi; Talone, Marco; Camps Carmona, Adriano José (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A study of the latitudinal trend of the retrieved salinity performances along a Southwards transect has been performed, analyzing the trade-off between geophysical effects in cold seawater and the concomitant temporal ...

    • SMOS salinity retrievals enhancement in coastal areas by joint application of nodal sampling and corrected correlator efficiency 

      González Gambau, V.; Olmedo, Edson; Martinez, J.; Turiel Martínez, Antonio; Durán Martínez, Israel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This work is focused on the quality improvement of ESA's SMOS (Soil Moisture and Ocean Salinity) salinity retrievals, paying special attention to coastal regions. Two correction techniques have been applied to enhance the ...

    • Soil moisture estimation synergy using GNSS-R and L-Band microwave radiometry data from FSSCat/FMPL-2 

      Muñoz Martin, Joan Francesc; Llaveria Godoy, David; Herbert, Christoph Josef; Pablos Hernández, Miriam; Hyuk, Park; Camps Carmona, Adriano José (Multidisciplinary Digital Publishing Institute (MDPI), 2021-03-05)
      Article
      Accés obert
      The Federated Satellite System mission (FSSCat) was the winner of the 2017 Copernicus Masters Competition and the first Copernicus third-party mission based on CubeSats. One of FSSCat’s objectives is to provide coarse Soil ...

    • Strategies using time-domain measurements for radiated emissions testing in harsh environments 

      Solé Lloveras, Jordi; Azpúrua Auyanet, Marco Aurelio; Yoshioka, Yasutoshi; Silva Martínez, Fernando (2023-08-10)
      Article
      Accés obert
      Performing in-situ radiated emissions measurements, that is, in locations different from a standard test site, can be a challenging task because of the high electromagnetic noise levels in the ambient. A harsh electromagnetic ...