Enviaments recents

  • Recent activities of IAG working group “Ionosphere Prediction” 

    Erdogan, Eren; Hoque, Mainul; García Rigo, Alberto; Cueto, M.; Schmidt, Michael; Jakowski, Norbert; Berdermann, Jens; Monte Moreno, Enrique; Hernández Pajares, Manuel (2018)
    Comunicació de congrés
    Accés obert
    Ionospheric disturbances pose, for instance, an increasing risk on economy, national security, satellite and airline operations, communications networks and the navigation systems. Constructing ...
  • Global distribution of ionospheric scintillations from the Real-Time GPS ROTI 

    García Rigo, Alberto; Hernández Pajares, Manuel; Roma-Dollase, David (2018)
    Comunicació de congrés
    Accés obert
    A global real-time monitoring system has been implemented in the frame of ESA-ESTEC/EGNOS-POfunded project MONITOR. It is based on world-wide GNSS datastreams distributed by means of NTRIP and provides multiple ionospheric ...
  • St. Patrick’s Day 2015 geomagnetic storm analysis based on Real Time Ionosphere Monitoring 

    García Rigo, Alberto; Roma Dollase, David; Hernández Pajares, Manuel; Li, Zishen; Terkildsen, Michael; Ghoddousi Fard, Reza; Dettmering, Denise; Erdogan, Eren; Haralambous, Haris; Beniguel, Yannick; Berdermann, Jens; Kriegel, Martin; Krypiak-Gregorczyk, Anna; Gulyaeva, Tamara L.; Komjathy, Attila; Vergados, Panagiotis; Feltens, Joachim; Zandbergen, René; Olivares, German; Fuller Rowell, Tim; Altadill, David; Blanch, Estefania; Bergeot, Nicolas; Krankowski, Andrzej; Agrotis, Loukis; Galkin, Ivan; Orus-Perez, Raul; S. Prol, Fabricio (2017)
    Comunicació de congrés
    Accés obert
    A detailed analysis is presented for the days in March, 2015 surrounding St. Patrick’s Day 2015 geomagnetic storm, based on the existing real-time and near real-time ionospheric models (global or regional) within the ...
  • Ionosphere monitoring and forecast activities within the IAG working group “Ionosphere Prediction” 

    Hoque, Mainul; García Rigo, Alberto; Erdogan, Eren; Cueto, M.; Jakowski, Norbert; Berdermann, Jens; Hernández Pajares, Manuel; Schmidt, Michael; Wilken, Volken (2017)
    Comunicació de congrés
    Accés obert
    Ionospheric disturbances can affect technologies in space and on Earth disrupting satellite and airline operations, communications networks, navigation systems. As the world becomes ever more dependent on these technologies, ...
  • The Stanford-ESA integrity diagram: focusing on SBAS integrity 

    Tossaint, Michel Mathias Maria; Samson, Jaron; Toran, Felix; Ventura Traveset, Javier; Sanz Subirana, Jaume; Hernández Pajares, Manuel; Juan Zornoza, José Miguel (ION Publications (The Institute of navigation), 2016)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    In this article, a new concept for SBAS integrity validation is presented. The proposed concept is a modification of the well known Stanford diagram [2], where a 2D histogram shows the relationship of position errors against ...
  • Real time global ionospheric maps: a low latency alternative to traditional GIMs 

    Roma Dollase, David; Hernández Pajares, Manuel; García Rigo, Alberto; Laurichesse, Denis; Schmidt, Michael; Erdogan, Eren; Yuan, Yunbin; Li, Zishen; Gómez-Cama, José Ma.; Krankowski, Andrzej (2016)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    Since the late nineties different entities have been generating and distributing Global Ionospheric Maps (GIMs). In this time, multiple new application have arisen from the determination of electron content distribution ...
  • Comprehensive ionospheric delay modelling for single-frequency GNSS precise positioning: first steps 

    Colombo, Oscar L.; Hernández Pajares, Manuel; Janssen, Volker; García Rigo, Alberto (International GNSS Service (IGS), 2016)
    Comunicació de congrés
    Accés restringit per política de l'editorial
  • Assessment of the F2-layer electron density peak inferred from Formosat-3/COSMIC radio occultations over half a Solar Cycle 

    Aragon-Angel, Angela; Limberger, Marco; Hernández Pajares, Manuel; Altadill, David; Dettmering, Denise (2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    GNSS radio occultation (RO) measurements have become crucial to provide valuable information on the vertical electron density structure of the Ionosphere. Ionospheric key parameters such as the maximum electron density ...
  • Evaluation of the ionospheric F2 characteristics inferred from radio occultations exploiting the availability of FORMOSAT-3/COSMIC data over half a solar cycle 

    Aragón Ángel, Maria Angeles; Limberger, Marco; Hernández Pajares, Manuel; Altadill, David; Erdogan, Eren; Schmidt, Michael (ION Publications (The Institute of navigation), 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This contribution presents the assessment, on both the maximum electron density (NmF2) and the corresponding peak height of the F2 layer (hmF2), of the overall performance of such ionospheric key parameters inferred from ...
  • Comparing performances of seven different global VTEC ionospheric models in the IGS context 

    Hernández Pajares, Manuel; Roma Dollase, David; Krankowski, Andrzej; García Rigo, Alberto; Orús Pérez, Raul (International GNSS Service (IGS), 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    A summary of the main concepts on Global Ionospheric Map(s) (hereinafter GIM(s)) of Vertical Electron Content (VTEC), with special emphasis on their assessment, is presented in this paper. It is based on the experience ...
  • A linear scale height Chapman model supported by GNSS occultation measurements 

    Olivares Pulido, German; Hernández Pajares, Manuel; Aragón Ángel, Maria Angeles; García Rigo, Alberto (2016-05)
    Comunicació de congrés
    Accés obert
    Global Navigation Satellite Systems (GNSS) radio occultations allow the vertical sounding of the Earth's atmosphere, in particular, the ionosphere. The physical observables estimated with this technique permit to test ...
  • Classifing stars: a comparison between clasical, genetic and neural network algorithms 

    Hernández Pajares, Manuel; Comellas Padró, Francesc de Paula; Monte Moreno, Enrique (F. MURTAGH AND A. HECK, 1992)
    Text en actes de congrés
    Accés obert

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