Now showing items 1-14 of 14

    • A two-dimensional doppler-radiometer for earth observation 

      Camps Carmona, Adriano José; Swift, Calvin T. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-07-31)
      Article
      Open Access
      Compared to synthetic aperture radars (SARs), the angular resolution of microwave radiometers is quite poor. Traditionally, it has been limited by the physical size of the antenna. However, the angular resolution can be ...
    • 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 ...
    • Deriving VTEC maps from SMOS radiometric data 

      Rubino, Roselena; Duffo Ubeda, Núria; González Gambau, Verónica; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Durán Martínez, Israel; Martín Neira, Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-01)
      Conference lecture
      Open Access
      In this work, a new methodology is proposed in order to derive vertical total electron content (VTEC) maps from the radiometric measurements of the Soil Moisture and Ocean Salinity (SMOS) mission as an alternative approach ...
    • Empirical results of a surface-level GNSS-R experiment in a wave channel 

      Carreño Luengo, Hugo; Camps Carmona, Adriano José (2015-06-01)
      Article
      Open Access
      The scattering of GNSS signals over a water surface is studied when the receiver is at a low height, as in GNSS-R coastal altimetry. The precise determination of the local sea level and wave state from the coast will provide ...
    • In-orbit validation of the fmpl-2 instrument—the gnss-r and l-band microwave radiometer payload of the fsscat mission 

      Muñoz Martin, Joan Francesc; Fernandez Capon, Lara Pilar; Pérez Portero, Adrián; Ruiz De Azúa Ortega, Juan Adrián; Hyuk, Park; Camps Carmona, Adriano José; Carnicero Domínguez, Bernardo; Pastena, Massimiliano (Multidisciplinary Digital Publishing Institute (MDPI), 2021-01-01)
      Article
      Open Access
      The Flexible Microwave Payload-2 is the GNSS-R and L-band Microwave Radiometer Payload on board 3Cat-5/A, one of the two 6-unit CubeSats of the FSSCat mission, which were successfully launched on 3 September 2020 on Vega ...
    • Inter-comparison of SMOS and aquarius brightness temperatures at L-band over selected targets 

      Pablos Hernández, Miriam; Piles Guillem, Maria; González Gambau, Veronica; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference lecture
      Restricted access - publisher's policy
      The spectral window at L-band (1.400 - 1.427 GHz) is reserved for passive microwave remote sensing. This band is well-suited to retrieve soil moisture and ocean salinity due to emissivity of soil and seawater decreases ...
    • Ocean monitoring using GNSS-R techniques and microwave radiometry: The pau instrument concept 

      Camps, Adriano; Bosch, Xavier; Ramos Pérez, Isaac; Marchán Hernández, Juan Fernando; Valencia Domènech, Enric; Rodríguez Álvarez, Nereida (SARTI (Technological Development Centre of Remote Acquisition and Data processing Systems), 2010-03-10)
      Article
      Open Access
    • Retrieving Sea Surface Salinity With Multi-Angular L-band Brightness Temperatures: Improvement By Spatio-Temporal Averaging. 

      Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena; Duffo Ubeda, Núria; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Batres Gonzalez, Luis (AMER GEOPHYSICAL UNION, 2005-03-31)
      Article
      Open Access
      The Soil Moisture and Ocean Salinity (SMOS) mission was selected in May 1999 by the European Space Agency to provide global and frequent soil moisture and sea surface salinity maps. SMOS' single payload is Microwave Imaging ...
    • RF interference analisys in aperture synthesis interferometric radiometers: Application to L-band MIRAS instrument 

      Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Bará Temes, Francisco Javier; Capdevila Vives, Joan (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-03-31)
      Article
      Open Access
      Current spaceborne radiometers do not achieve the required spatial resolution demanded by the scientific community due to antenna-size technological limitations. In recent years, several space agencies have been studying ...
    • The correlation of visibility errors and its impact on the radiometric resolution of an aperture synthesis radiometer 

      Bará Temes, Francisco Javier; Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-09-30)
      Article
      Open Access
      The correlation between the visibility samples' noise of an aperture synthesis radiometer are required for the computation of the recovered temperature noise of a given pixel and of the improvement introduced by baseline ...
    • The flexible microwave payload-2: A SDR-based GNSS-reflectometer and L-Band radiometer for CubeSats 

      Muñoz Martin, Joan Francesc; Fernandez Capon, Lara Pilar; Ruiz De Azúa Ortega, Juan Adrián; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2020-03-23)
      Article
      Open Access
      This article presents the FMPL-2 on board the FSSCat mission, the 2017 ESA Small Sentinel Satellite Challenge and overall Copernicus Masters Competition winner. FMPL-2 is a passive microwave instrument based on a ...
    • Validation of SMOS L2 and L3 soil moisture products over the Duero basin at different spatial scales 

      Gonzalez Zamora, Angel; Sanchez, Nilda; Gumuzzio, Angela; Piles Guillem, Maria; Olmedo, Edson; Martinez Fernandez, Jose (International Society for Photogrammetry and Remote Sensing (ISPRS), 2015)
      Conference report
      Restricted access - publisher's policy
      An increasing number of permanent soil moisture measurement networks are nowadays providing the means for validating new remotely sensed soil moisture estimates such as those provided by the ESA's Soil Moisture and Ocean ...
    • Validation of the SMOS instrument model 

      Martín-Porqueras, Fernando (Universitat Politècnica de Catalunya, 2013-07-12)
      Master thesis
      Open Access
      [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 ...
    • Wind speed effect on L-band brightness temperature inferred from EuroSTARRS and WISE 2001 field experiments 

      Etcheto, Jacqueline; Dinnat, Emmanuel P.; Boutin, Jacqueline; Camps Carmona, Adriano José; Miller, J.; Contardo, Stéphanie; Wesson, J.; Font, Jordi; Long, David G. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2004-10-31)
      Article
      Open Access
      The results from two field experiments in the Mediterranean Sea are used to study the wind speed dependence of brightness temperature at L-band. During the EuroSTARRS airborne experiment, an L-band radiometer made ...