Ara es mostren els items 1-20 de 441

  • 2000 days of SMOS at the Barcelona Expert Centre: a tribute to the work of Jordi Font 

    Turiel Martínez, Antonio; Piles Guillem, Maria; González Gambau, V.; Ballabrera Poy, Joaquim; Gabarró Prats, Carolina; Martinez, Justino; Olmedo, Estrella; Portabella, Marcos; Pérez López, Fernando; Solé Ollé, Jordi (2016-09-01)
    Article
    Accés obert
    Soil Moisture and Ocean Salinity (SMOS) is the first satellite mission capable of measuring sea surface salinity and soil moisture from space. Its novel instrument (the L-band radiometer MIRAS) has required the development ...
  • 3CAT-2, an experimental nano-satellite for GNSS-R earth observation: mission concept and analysis 

    Carreno-Luengo, Hugo; Camps Carmona, Adriano José; Muñoz, Joan Francesc; Vidal, David; Amezaga Sarries, Adria; Bolet Alberto, Font; Jané, Jaume; Olivé, Roger; Carola, Jorge; Catarino, Nuno; Hagenfeldt, Miguel; Palomo, Pedro; Cornara, Stefania (2016-10-01)
    Article
    Accés obert
    Global navigation satellite system reflectometry is a multistatic radar using navigation signals as signals of opportunity. It provides wide-swath and improved spatiotemporal sampling over current space-borne missions. The ...
  • 3Cat-2: A P(Y) and C/A GNSS-R experimental nano-satellite mission 

    Carreño Luengo, Hugo; Camps Carmona, Adriano José; Perez Ramos, I.; Forte, G.; Onrubia Ibáñez, Raúl; Díez, Raúl (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    3Cat-2 is a 6 U CubeSat mission designed to perform ocean altimetry by means of Global Navigation Satellite Systems Reflectometry (GNSS-R). In this paper 3Cat-2 mission is presented. The main payload is the novel dual-band ...
  • About the potential of lidars with different photodetectors under daytime sky radiation 

    Agishev, Ravil R.; Comerón Tejero, Adolfo; Gilerson, Alexander (2015)
    Text en actes de congrés
    Accés obert
    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 ...
  • Accurate and automatic NOAA-AVHRR image navigation using a global contour matching approach 

    Eugenio, F; Marqués Acosta, Fernando; Gómez, L; Suarez, E; Rovaris, E (2000)
    Text en actes de congrés
    Accés obert
    The problem of precise and automatic AVHRR image navigation is tractable in theory, but has proved to be somewhat difficult in practice. The authors' work has been motivated by the need for a fully automatic and operational ...
  • A comparative study of operational vessel detectors for maritime surveillance using satellite-borne synthetic aperture radar 

    Stasolla, Mattia; Mallorquí Franquet, Jordi Joan; Margarit, Gerard; Santamaría, Carlos; Walker, Nick (2016-06-01)
    Article
    Accés obert
    This paper presents a comparative study among four operational detectors that work by automatically post-processing synthetic aperture radar (SAR) images acquired from the satellite platforms RADARSAT-2 and COSMO-SkyMed. ...
  • A comparison of different optimisation search methodologies for self-optimisation in wireless cellular networks 

    Sánchez González, Juan; Sallent Roig, José Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Self-Organising Networks (SON) concept is seen as a way to reduce costs by automating functionalities such as network optimisation usually performed manually with extensive human work time. This paper provides a general ...
  • A comparison of different techniques for atmospheric artefact compensation in GBSAR differential acquisitions 

    Pipia, Luca; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; Mallorquí Franquet, Jordi Joan (IEEE, 2006)
    Text en actes de congrés
    Accés obert
    In this paper, a comparison of different techniques for compensating the atmospheric artifacts in Ground-Based SAR zero-baseline acquisitions at X-Band is presented. The way the fluctuation of atmospheric parameters like ...
  • Acquisition and processing software for an airborne soil moisture mapper LBand radiometer 

    Bosch i Lluis, Xavier (Universitat Politècnica de Catalunya, 2010-07-10)
    Projecte/Treball Final de Carrera
    Accés obert
    The improvement in weather forecast and climate motorization, to prevent for example natural disasters, requires global scale knowledge of the soil moisture (SM) and the surface salinity (SSS), which are non-existent at ...
  • Actividades españolas en el marco del proyecto CHARMEX desde 2009: un resumen 

    Sicard, Michaël; Pey, Jorge; Cerro, José Carlos; Lange Vega, Diego; Caballero, Sandra; Tovar Sanchez, Antonio; Morales Baquero, Rafael; Comerón Tejero, Adolfo; Bujosa, Carles; Querol Carceller, Xavier; Artiñano, Begoña; Alados Arboledas, Lucas; Alastuey, Andres; Rocadenbosch Burillo, Francisco; Muñoz, Alvaro; Muñoz Porcar, Constantino; García Vizcaíno, David; Bach, Jordi; Bush, Xavier (2014)
    Text en actes de congrés
    Accés obert
    El proyecto ChArMEx (Chemistry-Aerosol Mediterranean Experiment) es una iniciativa francesa cuyo objetivo es desarrollar y coordinar las acciones de investigación regionales para una evaluación científica de la situación ...
  • Adaptive estimation of the stable-boundary-layer height using combined lidar and microwave radiometer observations 

    Saeed, Umar; Rocadenbosch Burillo, Francisco; Crewell, Susanne (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Article
    Accés obert
    A synergetic approach for the estimation of stable boundary-layer height (SBLH) using lidar and microwave radiometer (MWR) data is presented. Vertical variance of the backscatter signal from a ceilometer is ...
  • Adaptive Filter Solution For Processing Lidar Returns: Optical Parameter Estimation 

    Rocadenbosch Burillo, Francisco; Vázquez Grau, Gregorio; Comerón Tejero, Adolfo (OPTICAL SOC AMER, 1998-01-31)
    Article
    Accés obert
    Joint estimation of extinction and backscatter simulated profiles from elastic-backscatter lidar return signals is tackled by means of an extended Kalman filter (EKF). First, we introduced the issue from a theoretical point ...
  • Advanced architectures for real-time delay-doppler map GNSS-reflectometers: the GPS reflectometer instrument for PAU (griPAU) 

    Valencia Domènech, Enric; Camps Carmona, Adriano José; Marchán Hernández, Juan Fernando; Bosch Lluís, Xavier; Rodríguez Álvarez, Nereida; Ramos Pérez, Isaac (2010-07-15)
    Article
    Accés restringit per política de l'editorial
    In recent years Global Navigation Satellite System’s signals Reflectometry (GNSS-R) has stood as a potential powerful remote sensing technique to derive scientifically relevant geophysical parameters such as ocean altimetry, ...
  • Advanced polarimetric optimization for DInSAR applications with Ground-Based SAR 

    Iglesias González, Rubén; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; López Martínez, Carlos; Alonso González, Alberto (2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this paper, the applications of advanced polarimetric optimization techniques for Differential Interferometric SAR (DInSAR) pixel selection are explored in the framework of deformation map retrieval in landslides. ...
  • Advances in calibration of the SMOS zero-baseline radiometers 

    Colliander, Andreas; Chae, Chunsik; Dinnat, Emmanuel Philippe; Oliva, Roger; Kainulainen, Juha; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Over the course of the more than four-year mission several enhancements have been developed for the calibration of the zero-baseline radiometers of ESA's SMOS (Soil Moisture Ocean Salinity) mission. Here a particular ...
  • Aerosol closure study by lidar, Sun photometry, and airborne optical counters during DAMOCLES filed campaign at El Arenosillo sounding station, Spain 

    Guerrero Rascado, Juan Luis; Andrey, J.; Sicard, Michaël; Comerón Tejero, Adolfo; Pujadas Cordero, Manuel; Molero, Francisco; Rocadenbosch Burillo, Francisco; Pedrós Esteban, Roberto; Serrano-Vargas, O.; Gil Ojeda, Manuel; Olmo, F. J.; Lyamani, H.; Navas Guzmán, Francisco; Alados Arboledas, Lucas (American Geophysical Union (AGU), 2011-01-26)
    Article
    Accés restringit per política de l'editorial
    We present a comparison of aerosol properties derived from in situ and remote sensing instruments during DAMOCLES campaign, aimed at investigating the equivalence between the instrumentation and methodologies employed by ...
  • Aerosol lidar intercomparison in the framework of the EARLINET project: 3. Raman lidar algorithm for aerosol extinction, backscatter and lidar ratio 

    Pappalardo, Gelsomina; Amodeo, Aldo; Pandolfi, Marco; Wandinger, Ulla; Ansmann, Albert; Bösenberg, Jens; Matthias, Volker; Amiridis, Vassilis; De Tomasi, Ferdinando; Iarlori, M.; Papayannis, Alexander; Rocadenbosch Burillo, Francisco; Wang, Xuan (2004-10)
    Article
    Accés restringit per política de l'editorial
    An intercomparison of the algorithms used to retrieve aerosol extinction and backscatter starting from Raman lidar signals has been performed by 11 groups of lidar scientists involved in the European Aerosol Research Lidar ...
  • Aerosol optical, microphysical and radiative properties at regional background insular sites in the western Mediterranean 

    Sicard, Michaël; Barragán Cuesta, Rubén; Dulac, F; Alados Arboledas, Lucas; Mallet, Marc (2016-09-28)
    Article
    Accés obert
    In the framework of the ChArMEx (the Chemistry-Aerosol Mediterranean Experiment; http://charmex.lsce.ipsl.fr/) program, the seasonal variability of the aerosol optical, microphysical and radiative properties derived from ...
  • A generic simulator for aperture synthesis radiometers 

    Camps Carmona, Adriano José; Hyuk, Park; Barbosa Torralbo, José; Bandeiras, J.; D'Addio, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    ESA's SMOS mission has demonstrated that Synthetic Aperture Interferometric Radiometers can be a useful tool for Earth observation. Today, the NASA's GeoStar instrument (USA), ESA's GAS instrument (Europe), or CSSAR's GIMS ...
  • A generic simulator for aperture synthesis radiometers: Radiative transfer module and end-to-end tests 

    Camps Carmona, Adriano José; Hyuk, Park; Barbosa, José; Bandeiras, J.; Sousa, Ana; d'Addio, Salvatore; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    The Synthetic Aperture Interferometric Radiometer (SAIR) Performance Simulator (SAIRPS) is a very versatile software tool developed by Deimos Engenharia (Portugal) and the Universitat Politècnica de Catalunya-Barcelona ...