Enviaments recents

  • Impact of amplitude calibration errors on SMOS global images 

    Durán Martínez, Israel; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; Oliva, Roger; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    Some of the artifacts observed in SMOS brightness temperature images are originated in an inconsistency between correlation and antenna temperature calibration errors, which produces a multiplicative bias that scales with ...
  • 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)
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    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 ...
  • About the potential of lidars with different photodetectors under daytime sky radiation 

    Agishev, Ravil R.; Comerón Tejero, Adolfo; Gilerson, Alexander (2015)
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    Results of theoretical analysis and experimental developments implemented as advanced methods and means to improve a noise-immunity of lidar systems for practical applications are discussed. A particular attention is paid ...
  • Comparison of real-time time-frequency RFI mitigation techniques in microwave radiometry 

    Querol Borràs, Jorge; Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Alonso Arroyo, Alberto; Hyuk, Park; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    Radio-Frequency Interference (RFI) is a well-known problem for Microwave Radiometers (MWR). A number of RFI mitigation techniques have been studied to deal with RFI from the receiver's side. In this study, a comparison in ...
  • Three-antenna two-dimensional imaging correlation radiometer: concept and preliminary results 

    Camps Carmona, Adriano José; Sumpsi, A (Institute of Electrical and Electronics Engineers (IEEE), 2003)
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  • Processing and initial comparison of PSR data from CAMEX-3 to SSM/I and TMI data 

    Serke, D; Gasiewski, A J; Klein, M; Leuski, V; Francavilla, A; Piepmeier, J R; Corbella Sanahuja, Ignasi (Institute of Electrical and Electronics Engineers (IEEE), 1999)
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    A multiband Polarimetric Scanning Radiometer (PSR) was integrated on a NASA DC-8 aircraft and flown from August through September of 1998 during the third Convection and Moisture Experiment (CAMEX-3). The PSR is a new ...
  • Millimeter-wave aperture synthesis radiometry for snow and ice mapping 

    Harvey, A.R.; Greenaway, A.H.; Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Bara Temes, Francisco Javier; Martín Neira, Manuel (1999)
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    An outline design for a dual-band mm-wave polarimetric SAIR has been presented and is considered to be tractable. The envisaged application is for snow and ice mapping and ocean wind vector measurement. The vastly increased ...
  • A model for the wind direction signature in the stokes smissin sector from the ocean surfaces at microwave frequencies 

    Reising, S C; Camps Carmona, Adriano José (IEEE Piscataway, 2000)
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    This paper presents a model of the Stokes emission vector from the ocean surface. The ocean surface is described as an ensemble of facets with Cox and Munk's (1954) Gram-Charlier slope distribution. The study discusses the ...
  • EARLINET: 12-year of aerosol profiling over Europe 

    Mona, Lucia; Alados Arboledas, Lucas; Amiridis, Vassilis; Amodeo, Aldo; Apituley, Arnoud; Balis, Dimitris; Comerón Tejero, Adolfo; Iarlori, M.; Linné, Holger; Nicolae, D.; Papayannis, Alexander; Perrone, Maria-Rita; Rizi, Vicenzo; Siomos, N.; Wandinger, Ulla; Wang, Xuan; Pappalardo, Gelsomina (2015)
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    EARLINET has been collecting high quality aerosol optical profiles over Europe since 2000. The comparison with automatic collected dataset of aerosol optical depth (AOD) from AERONET and MODIS demonstrates the effectiveness ...
  • New microwave-based missions applications for rainfed crops characterization 

    Sánchez, Nilda; López Sánchez, Juan Manuel; Arias Pérez, B.; Valcarce Diñeiro, R.; Martinez Fernandez, Jose; Calvo Heras, J. M.; Camps Carmona, Adriano José; González Zamora, Ángel; Vicente Guijalba, F. (International Society for Photogrammetry and Remote Sensing (ISPRS), 2016)
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    A multi-temporal/multi-sensor field experiment was conducted within the Soil Moisture Measurement Stations Network of the University of Salamanca (REMEDHUS) in Spain, in order to retrieve useful information from satellite ...

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