Now showing items 1-9 of 9

  • Assessment on linearity errors in detectors for interferometric radiometers 

    Torres Torres, Francisco; Duffo Ubeda, Núria; Gonzalez-Haro, Cristina; Vilaseca, R; Sagués, L; Martín-Neira, Manuel (2008)
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    The performance of the power detectors used to denormalize the digital correlations in interferometric radiometers is degraded due to the non-linear behavior of the diode response. This work presents a comprehensive ...
  • Calibration consistency tool for interferometric radiometers 

    González-Gambau, Verónica; Torres Torres, Francisco; Duffo Ubeda, Núria; Martín-Neira, Manuel (2008)
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    This paper presents a method to check the consistency of the amplitude calibration in interferometric radiometers devoted to Earth observation This tool is based in the intrinsic properties of the internal calibration ...
  • Correction of spatial errors in SMOS brightness temperature images 

    Wu, Lin; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; Martín-Neira, Manuel (IEEE, 2011)
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    Systematic spatial errors in SMOS brightness temperature images are successfully estimated by using a statistical analysis of measured data. A constant multiplicative mask is derived by averaging spatial errors of a large ...
  • Interferometric radiometry measurement concept: The visibility equation 

    Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; Martín-Neira, Manuel (IEEE, 2011)
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    The fundamental concept of interferometric aperture synthesis microwave radiometry for Earth observation is reviewed. The measurement principles and a discussion on the signal processing techniques for image reconstruction ...
  • MIRAS characterization and monitoring during the SMOS In-Orbit Commissioning Phase 

    Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Martín-Neira, Manuel; Duffo Ubeda, Núria; González-Gambau, Verónica; Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena (2009)
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  • Phase error assessment of MIRAS/SMOS by means of the redundant space calibration 

    Dávila, Rubén; Torres Torres, Francisco; Duffo Ubeda, Núria; Corbella Sanahuja, Ignasi; Pablos, Miriam; Martín-Neira, Manuel (IEEE, 2011)
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    SMOS is the acronym for the Soil Moisture and Ocean Salinity mission by the European Space Agency (ESA) [1]. Its single payload, the Microwave Imaging Radiometer using Aperture Synthesis (MIRAS), was successfully launched ...
  • SMOS brightness temperature measurements and end-to-end calibration 

    Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Martín-Neira, Manuel (IEEE, 2011)
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    SMOS is the acronym for the Soil Moisture and Ocean Salinity mission by the European Space Agency (ESA) [1]. Its single payload, the Microwave Imaging Radiometer using Aperture Synthesis (MIRAS), was launched in November ...
  • SMOS payload in-orbit performance 

    Martín-Neira, Manuel; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; González-Gambau, Verónica; Closa, Josep; Benito, Javier; Borges, A.; Rautiainen, K.; Kainulainen, J.; Gutierrez, A.; Barbosa, J.; Catarino, N.; Castro, R.; Freitas, S.; Candeias, H.; Freitas, J.; Cabot, F.; Anterrieu, E.; Zundo, M.; Brown, M.; McMullan, K.; Martín-Porqueras, F.; Oliva, R.; Wright, N.; Caprolicchio, R. (2010)
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  • SMOS payload pre-launch performance 

    Martín-Neira, Manuel; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; González-Gambau, Verónica; Colliander, A; Closa, Josep; Benito, J; Borges, A; Brown, M; McMullan, K (2009)
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