Now showing items 1-10 of 10

  • Assessment of St. Patrick's Day 2015 Geomagnetic storm impact on EGNOS 

    Hernández Pajares, Manuel; Béniguel, Yannick; Orús Pérez, Raul; Prieto Cerdeira, Roberto; García Rigo, Alberto; Kinrade, J; Kauristie, Kirsti; Schlueter, Stefan; Serant, Damien; Krankowski, Andrzej; Secretan, Hugues; Sampedro Casis, Rodrigo; Prats Menéndez, Xavier (European Space Agency (ESA), 2015)
    Conference lecture
    Restricted access - publisher's policy
    The Monitor project has been designed to monitor ionospheric events that would allow evaluating its impact on European GNSS Systems. It includes a network of ionospheric scintillation monitoring stations in various ...
  • Characterization and modelling of the ionosphere for EGNOS development and qualification 

    Schlüter, S.; Prieto Cerdeira, Roberto; Orús Pérez, Raul; Lam, J.P.; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Hernández Pajares, Manuel (2013)
    Conference lecture
    Restricted access - publisher's policy
    The availability of representative data samples, models and statistical information derived from the analysis of parameters that adequately describe the state of the ionosphere are key elements for the design, verification ...
  • Definition of an SBAS ionospheric activity indicator and its assessment over Europe and Africa During the last solar cycle 

    Sanz Subirana, Jaume; Juan Zornoza, José Miguel; Hernández Pajares, Manuel; Prieto Cerdeira, Roberto; Schlueter, Stefan (2013)
    Conference lecture
    Restricted access - publisher's policy
    In this work, an ionospheric activity indicator is defined based in the “weighted” Along Arc TEC rate (AATR). It is shown that this indicator, which can be easily computed from the GPS carrier phases, is well correlated ...
  • Distribution and mitigation of higher-order ionospheric effects on precise GNSS processing 

    Hernández Pajares, Manuel; Aragón Ángel, María Ángeles; Defraigne, Pascale; Bergeot, Nicolas; Prieto Cerdeira, Roberto; García Rigo, Alberto (2014-04)
    Article
    Open Access
    Higher-order ionospheric effects (I2+) are one of the main limiting factors in very precise Global Navigation Satellite Systems (GNSS) processing, for applications where millimeter accuracy is demanded. This paper summarizes ...
  • Impact of higher order ionospheric delay on precise GNSS computation 

    Hernández Pajares, Manuel; Aragón Ángel, María Ángeles; Defraigne, Pascale; Bergeot, Nicolas; Prieto Cerdeira, Roberto; Sanz Subirana, Jaume (2013)
    Conference report
    Open Access
  • Modelling and assessing ionospheric higher order terms for GNSS signals 

    Aragón Àngel, Angela; Hernández Pajares, Manuel; Defraigne, Pascale; Bergeot, Nicolas; Prieto Cerdeira, Roberto (2015)
    Conference report
    Open Access
    High precision positioning and time transfer are required by a large number of scientific applications: seismic ground deformations, sea level monitoring or land survey applications require sub-centimeter precision in ...
  • MONITOR - Ionospheric Monitoring System: An Analysis of Perturbed Days Affecting SBAS Performance 

    Hernández Pajares, Manuel; Prieto Cerdeira, Roberto; Beniguel, Yannick; García Rigo, Alberto; Kinrade, J; Kauristie, Kirsti; Orús Pérez, Raul; Schlüter, S.; Serant, Damien; Nava, Bruno; Krankowski, Andrzej; Secretan, Hugues; Sampedro Casis, Rodrigo; Prats Menéndez, Xavier (2015)
    Conference report
    Restricted access - publisher's policy
    The Monitor project has been designed to monitor ionospheric events that would allow evaluating its impact on European GNSS Systems. It includes a network of ionospheric scintillation monitoring stations in various locations ...
  • MONITOR Ionospheric Monitoring System: GNSS performance estimation 

    Beniguel, Yannick; Hernández Pajares, Manuel; García Rigo, Alberto; Orús Pérez, Raul; Prieto Cerdeira, Roberto; Schlueter, Stefan; Secretan, Hugues; Monnerat, Michel; Serant, Damien (2015)
    Conference report
    Open Access
    MONITOR is a project from the European Space Agency’s GNSS Evolutions Programme started in 2010, dedicated to the collection of data and products during active periods of solar activity for later understanding of the impact ...
  • Novel ionospheric activity indicator specifically tailored for GNSS users 

    Sanz Subirana, Jaume; Juan Zornoza, José Miguel; González Casado, Guillermo; Prieto Cerdeira, Roberto; Schlüter, S.; Orús Pérez, Raul (The Institute of Navigation, 2014)
    Conference report
    Restricted access - author's decision
    This work introduces a novel ionospheric activity indicator useful for identifying disturbed periods affecting performance for GNSS users, at regional level. This indicator is based in the “Along Arc TEC Rate (AATR) and ...
  • Statistical characterization of strong and mid solar flares and sun EUV rate monitoring with GNSS 

    Monte Moreno, Enrique; Hernández Pajares, Manuel; García Rigo, Alberto; Beniguel, Yannick; Orús Pérez, Raul; Prieto Cerdeira, Roberto; Schlueter, Stefan (2015-03-16)
    Article
    Open Access
    The global network of permanent Global Navigation Satellite Systems (GNSS) receivers has become an useful and affordable way of monitoring the Solar EUV flux rate, especially -for the time being- in the context of Major ...