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Ara es mostren els items 36-55 de 118

    • Final report on EGNOS default ionospheric conditions. Volume 1: Selection and justification of indicators and analysis against past EGNOS performance 

      Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2013-01-10)
      Report de recerca
      Accés restringit per decisió de l'autor

    • Final report on EGNOS default ionospheric conditions. Volume 2: selection of ionospheric conditions: indicator thresholds 

      Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2013-01-10)
      Report de recerca
      Accés restringit per decisió de l'autor

    • Galileo broadcast ephemeris and clock errors analysis: 1 January 2017 to 31 July 2020 

      Alonso Alonso, María Teresa; Sanz Subirana, Jaume; Juan Zornoza, José Miguel; Rovira Garcia, Adrià; González Casado, Guillermo (Multidisciplinary Digital Publishing Institute (MDPI), 2020-11-29)
      Article
      Accés obert
      A preliminary analysis of Galileo F/NAV broadcast Clock and Ephemeris is performed in this paper with 43 months of data. Using consolidated Galileo Receiver Independent Exchange (RINEX) navigation files, automated navigation ...

    • gLAB hands-on education on satellite navigation 

      Rovira Garcia, Adrià; Ibáñez Segura, Deimos; Li, Mowen; Alonso Alonso, María Teresa; Sanz Subirana, Jaume; Juan Zornoza, José Miguel; González Casado, Guillermo (Universitat Politècnica de Catalunya, 2022-04-29)
      Comunicació de congrés
      Accés obert
      The Global Navigation Satellite System (GNSS) allows computing the Position, Velocity and Time (PVT) of users equipped with appropriate hardware (i.e. an antenna and a receiver) and software. The latter estimates the PVT ...

    • Global prediction of the vertical total electron content of the ionosphere based on GPS data 

      García Rigo, Alberto; Monte Moreno, Enrique; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Aragón Ángel, María Ángeles; Salazar Hernández, Dagoberto José (2011-12-29)
      Article
      Accés obert
      Although vertical total electron content (VTEC) forecasting is still an open subject of research, the use of predictions of the ionospheric state at a scale of several days is an area of increased interest. A global VTEC ...

    • GNSS data management and processing with the GPSTk 

      Salazar Hernández, Dagoberto José; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2010)
      Article
      Accés restringit per política de l'editorial
      We organize complex problems in simple ways using a GNSS data management strategy based on ‘‘GNSS Data Structures’’ (GDS), coupled with the open source ‘‘GPS Toolkit’’ (GPSTk) suite. The code resulting from using the ...

    • GNSS-Lab tool architecture design document 

      Ramos Bosch, Pedro; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2009-10-29)
      Report de recerca
      Accés restringit per acord de confidencialitat
      This document contains the detailed information related to the design and architecture of the gLAB software package.

    • GNSS-Lab tool Software User Manual 

      Ramos Bosch, Pedro; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2010-10-08)
      Report de recerca
      Accés restringit per decisió de l'autor

    • GNSS-Lab tool user software requirements specification 

      Ramos Bosch, Pedro; Sanz Subirana, Jaume; Hernández Pajares, Manuel; Juan Zornoza, José Miguel (2009-05-07)
      Report de recerca
      Accés restringit per acord de confidencialitat

    • GPS and Galileo Wide Area RTK concepts 

      Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Garcia Rodriguez, Alberto (Institut de Geomàtica, 2005)
      Text en actes de congrés
      Accés obert

    • GPS differential code biases determination: methodology and analysis 

      Sanz Subirana, Jaume; Juan Zornoza, José Miguel; Rovira Garcia, Adrià; González Casado, Guillermo (2017-10)
      Article
      Accés obert
      We address two main problems related to the receiver and satellite differential code biases (DCBs) determination. The first issue concerns the drifts and jumps experienced by the DCB determinations of the International ...

    • High accuracy positioning using carrier-phases with the opensource GPSTK software 

      Salazar Hernández, Dagoberto José; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2008-12-12)
      Article
      Accés obert
      The objective of this work is to show how using a proper GNSS data management strategy, combined with the flexibility provided by the open source "GPS Toolkit" (GPSTk), it is possible to easily develop both simple ...

    • Higher education in Spain 

      Romero Sánchez, Jesús; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2016-02-01)
      Report de recerca
      Accés obert

    • ICASES scenarios Final Report 

      Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2013-12-11)
      Report de recerca
      Accés restringit per acord de confidencialitat

    • Impact of medium-scale traveling ionospheric disturbances on network real-time kinematic services: CATNET study case 

      Timote Bejarano, Cristhian Camilo; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Rovira Garcia, Adrià; González Casado, Guillermo; Escudero Royo, Miguel (2020-07-16)
      Article
      Accés obert
      Medium-scale traveling ionospheric disturbances (MSTIDs) are fluctuations in the plasma density that propagate through the upper layer of the atmosphere at velocities of approximately 100 m/s and periods reaching some tens ...

    • Improved characterization and modeling of equatorial plasma depletions 

      Blanch Llosa, Estefania; Altadill, David; Juan Zornoza, José Miguel; Camps Carmona, Adriano José; Barbosa, José; González Casado, Guillermo; Riba Sagarra, Jaume; Sanz Subirana, Jaume; Vázquez Grau, Gregorio; Orús Pérez, Raul (2018-08-22)
      Article
      Accés obert
      This manuscript presents a method to identify the occurrence of Equatorial Plasma Bubbles (EPBs) with data gathered from receivers of Global Navigation Satellite System (GNSS). This method adapts a previously existing ...

    • Improved modelling of ionospheric disturbances for remote sensing and navigation 

      Camps Carmona, Adriano José; Barbosa, José; Juan Zornoza, José Miguel; Blanch Llosa, Estefania; Altadill, David; González Casado, Guillermo; Vázquez Grau, Gregorio; Riba Sagarra, Jaume; Orus-Perez, Raul (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A generic software tool to evaluate the impact of ionospheric disturbances is presented, including low and high latitude physically-based models, and low and high frequency fluctuations. This tool has been developed ...

    • Improvement and validation of retrieved FORMOSAT-3/COSMIC electron densities using Jicamarca DPS 

      Aragón Ángel, María Ángeles; Liou, Y.-A.; Lee, C.C.; Hernández Pajares, Manuel; Sanz Subirana, Jaume; Juan Zornoza, José Miguel; Reinisch, B.W. (2010)
      Presentació
      Accés obert

    • Improvement of global ionospheric VTEC maps by using kriging interpolation technique 

      Orús Pérez, Raul; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2005-07-07)
      Article
      Accés obert
      In this work, a geostatistic interpolation algorithm, called kriging, has been applied to improve the Technical University of Catalonia (UPC) global ionospheric maps (GIMs) computed with GPS data. This new UPC GIM, from ...

    • Improvement of retrieved FORMOSAT-3/COSMIC electron densities validated by ionospheric sounder measurements at Jicamarca 

      Aragón Ángel, María Ángeles; Liou, Y.-A.; Lee, C.-C.; Reinisch, B.W.; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2011-09-01)
      Article
      Accés obert
      Inversion techniques applied to GPS‐LEO radio occultation data allow the retrieval of accurate and worldwide‐distributed refractivity profiles, which, in the case of the ionosphere, can be converted into electron densities ...