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Ara es mostren els items 120-139 de 202

    • Occurrence of solar flares viewed with GPS: statistics and fractal nature 

      Monte Moreno, Enrique; Hernández Pajares, Manuel (2014-11-01)
      Article
      Accés restringit per política de l'editorial
      In this paper we describe the statistical properties of the EUV solar flux sudden variation. The solar flux variation is modeled as a time series characterized by the subsolar Vertical Total Electron Content double difference ...

    • Open source precise point positioning with GNSS data structures and the GPSTk 

      Salazar Hernández, Dagoberto José; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (EGU, 2008-04-13)
      Comunicació de congrés
      Accés obert

    • Open source precise point positioning with GNSS data structures and the GPSTk 

      Salazar Hernández, Dagoberto José; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (European Geoscience Union, 2008-04)
      Article
      Accés obert

    • PIOM-FIPP: executive summary (ES) 

      Hernández Pajares, Manuel; Wielgosz, Pawel (2015-04-03)
      Report de recerca
      Accés restringit per acord de confidencialitat

    • PIOM-FIPP: Experimental Campaigns Design Report (ECD) 

      Stepniak, Katarzyna; Paziewski, Jacek; Hernández Pajares, Manuel; García Rigo, Alberto; Bosy, Jaroslaw; Hadas, Tomasz; Krypiak-Gregorczyk, Anna; Wielgosz, Pawel (2014-03-07)
      Report de recerca
      Accés restringit per acord de confidencialitat

    • PIOM-FIPP: Final Report (FR) 

      Stepniak, Katarzyna; Paziewski, Jacek; Krukowska, Marta; Hernández Pajares, Manuel; García Rigo, Alberto; Bosy, Jaroslaw; Hadas, Tomasz; Krypiak-Gregorczyk, Anna; Wielgosz, Pawel (2015-04-03)
      Report de recerca
      Accés restringit per acord de confidencialitat

    • PIOM-FIPP: TN1 

      Paziewski, Jacek; Stepniak, Katarzyna; Wielgosz, Pawel; Hernández Pajares, Manuel; García Rigo, Alberto; Bosy, Jaroslaw; Hadas, Tomasz; Krypiak-Gregorczyk, Anna (2014-03-19)
      Report de recerca
      Accés restringit per acord de confidencialitat

    • PIOM-FIPP: TN2 

      Hernández Pajares, Manuel; García Rigo, Alberto; Wielgosz, Pawel (2014-04-30)
      Report de recerca
      Accés restringit per acord de confidencialitat

    • Plasmaspheric Electron Content contribution inferred from ground and radio occultation derived Total Electron Content 

      Aragón Ángel, María Ángeles; Sanz Subirana, Jaume; Juan Zornoza, José Miguel; Hernández Pajares, Manuel; Altadill, D. (2012)
      Text en actes de congrés
      Accés obert
      The FORMOSAT-3/COSMIC satellite constellation has become an important source of remote sensing data globally distributed for the sounding of the atmosphere of the Earth and, in particular, the ionosphere. In this study, ...

    • Polar electron content from GPS data-based global ionospheric maps: assessment, case studies, and climatology 

      Lyu, Haixia; Hernández Pajares, Manuel; Aragón Ángel, Maria Angeles; Monte Moreno, Enrique; An, Jiachun; Liu, Jingbin (2020-04-22)
      Article
      Accés obert
      The electron content distribution of the north and south polar ionosphere from 2001 to the beginning of 2019 is analyzed by using the UQRG global ionospheric map (GIM) of vertical total electron content (VTEC), computed ...

    • Power-law distribution of rapid ionosphere electron content fluctuations via GNSS measurements 

      Monte Moreno, Enrique; Hernández Pajares, Manuel; Yang, Heng (Institute of Electrical and Electronics Engineers (IEEE), 2023)
      Article
      Accés obert
      The ionosphere is a dynamic region of the Earth’s upper atmosphere that exhibits various fluctuations in electron density. These fluctuations can be estimated using measurements from the global navigation satellite system ...

    • PPP at low latitudes with ionospheric model exclusively based on single frequency GNSS measurements 

      Christovam de Souza, Ana Lucia; Prol, Fabricio dos Santos; Jerez, Gabriel Olivera; Hernández Pajares, Manuel; Camargo, Paulo de Oliveira (John Wiley & sons, 2023-08-01)
      Article
      Accés obert
      Single frequency users of the Global Navigation Satellite System (GNSS) should correct the ionospheric delay to obtain positioning solutions. A valuable source of ionospheric delay corrections is the global ionospheric ...

    • Pre-earthquake ionospheric anomalies before three major earthquakes by GPS-TEC and GIM-TEC data during 2015–2017 

      Tariq, Muhammad Arslan; Shah, Munawar; Hernández Pajares, Manuel; Iqbal, Talat (2019-04-01)
      Article
      Accés restringit per política de l'editorial
      The dual-frequency satellite-based measurements from Global Positioning System (GPS) may provide feasible ways of studying and potentially detecting of earthquake (EQ) related anomalies in the ionosphere. In this paper, ...

    • Precise ionospheric electron content monitoring from single- frequency GPS receivers 

      Hernández Pajares, Manuel; Roma Dollase, David; García Fernández, Miquel; Orús Pérez, Raul; García Rigo, Alberto (2018-10-01)
      Article
      Accés obert
      The number of existing global positioning system (GPS) single-frequency receivers continues growing. More than 90% of GPS receivers are implemented as low-cost single-frequency chipsets embedded in smartphones. This provides ...

    • Prediction and warning system of SEP events and solar flares for risk estimation in space launch operations 

      García Rigo, Alberto; Nuñez, Marlon; Qahwaji, Rami; Ashamari, Omar W; Jiggens, Piers; Pérez Querol, Gustau; Hernández Pajares, Manuel; Hilgers, Alain (2016-07-08)
      Article
      Accés obert
      A web-based prototype system for predicting solar energetic particle (SEP) events and solar flares for use by space launch operators is presented. The system has been developed as a result of the European Space Agency (ESA) ...

    • Prediction system for the anticipation of Space Weather events affecting ionosphere and GNSS satellite systems 

      García Rigo, Alberto; Nuñez, Marlon; Qahwaji, Rami; Ashamari, Omar W; Jiggens, Piers; Pérez, Gustau; Hernández Pajares, Manuel; Hilgers, Alain (European Space Agency (ESA), 2015)
      Comunicació de congrés
      Accés obert
      The solar activity can be considered one of the main sources of hazards not only affecting launch operations but also the reliability of Global Navigation Satellite Systems (GNSS), such as Galileo, and Satellite Based ...

    • Preliminary NeQuick assessment for future single frequency users of GALILEO 

      Aragón Ángel, María Ángeles; Orús Pérez, Raül; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2005)
      Text en actes de congrés
      Accés obert
      The NeQuick model is the ionospheric mo del that will be used by the GALILEO single frequency user to compute ionospheric corrections. In this framework, the aim of this study is to show a preliminary assessment of the ...

    • Procesado de Datos GPS: código y fase. Algoritmos, técnicas y recetas. 

      Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (gAGE/UPC, 2005-07)
      Llibre
      Accés restringit per política de l'editorial

    • PRTODTS monthly progress report no 1 (February 2009) 

      Hernández Pajares, Manuel; Ramos Bosch, Pedro; Sanz Subirana, Jaume; Juan Zornoza, José Miguel (2009-03-03)
      Report de recerca
      Accés restringit per acord de confidencialitat

    • PRTODTS monthly progress report no 2 (March 2009) 

      Hernández Pajares, Manuel; Ramos Bosch, Pedro; Sanz Subirana, Jaume; Juan Zornoza, José Miguel (2009-04-01)
      Report de recerca
      Accés restringit per acord de confidencialitat