Exploració per autor "Juan Zornoza, José Miguel"
Ara es mostren els items 1-20 de 118
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A Kinematic campaign to evaluate EGNOS 1046 maritime service
Ibáñez Segura, Deimos; Rovira Garcia, Adrià; Sanz Subirana, Jaume; Juan Zornoza, José Miguel; González Casado, Guillermo; Alonso Alonso, María Teresa; López-Salcedo, José Antonio; Jia, Huamin; Pancorbo, Fransico Javier; García, Carlos; Martín, Irene; Abadía, Santos Rodrigo (ION Publications (The Institute of navigation), 2019)
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Accés obertGlobal Navigation Satellite Systems (GNSSs) have improved the efficiency and accuracy of transportation means. In terms of safety, the European Geostationary Navigation Overlay System (EGNOS) is providing vertical and ... -
A method for real-time identification and tracking of traveling ionospheric disturbances using ionosonde data: first results
Altadill, David; Segarra, Antoni; Blanch, Estefania; Juan Zornoza, José Miguel; Paznukhov, Vadym V.; Buresova, Dalia; Galkin, Ivan; Reinisch, Bodo W.; Belehaki, Anna (2020-01-20)
Article
Accés obertTraveling Ionospheric Disturbances (TIDs) are wave-like propagating irregularities that alter the electron density environment and play an important role spreading radio signals propagating through the ionosphere. A method ... -
A method for scintillation characterization using geodetic receivers operating at 1 Hz
Juan Zornoza, José Miguel; Aragón Ángel, Maria Angeles; Sanz Subirana, Jaume; González Casado, Guillermo; Rovira Garcia, Adrià (2017-05-08)
Article
Accés obertIonospheric scintillation produces strong disruptive effects on global navigation satellite system (GNSS) signals, ranging from degrading performances to rendering these signals useless for accurate navigation. The current ... -
A methodology to assess ionospheric models for GNSS
Rovira Garcia, Adrià; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo; Ibáñez Segura, Deimos (2015)
Comunicació de congrés
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A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases
Rovira Garcia, Adrià; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo; Ventura Traveset, Javier; Cacciapuoti, Luigi; Schoenemann, Erik (2021-12)
Article
Accés obertThe space segment of the Global Navigation Satellite System (GNSS) is equipped with highly stable atomic clocks. In order to use these clocks as references, their time offsets must be estimated from ground measurements as ... -
A new approach to improve satellite clock estimates, removing the inter-day jumps
Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Rovira Garcia, Adrià; González Casado, Guillermo; Ventura Traveset, Javier; Cacciapuoti, Luigi; Schoenemann, Erik (2020)
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Accés restringit per política de l'editorialTime synchronization is one of the main applications of Global Navigation Satellite System (GNSS). Indeed, GNSS satellites are equipped with highly stable atomic clocks, which can be used as clock references. In particular, ... -
A real-time world-wide ionospheric model for single and multi-frequency precise navigation
Rovira Garcia, Adrià; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (The Institute of Navigation, 2014)
Comunicació de congrés
Accés restringit per política de l'editorialThe ionosphere plays an important role in satellite-based navigation, either in standard navigation, with single frequency mass-market receivers, or in precise navigation, with dual frequency receivers. In this work, the ... -
A Worldwide ionospheric model for fast precise point positioning
Rovira Garcia, Adrià; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo (Institute of Electrical and Electronics Engineers (IEEE), 2015-03-03)
Article
Accés obertFast precise point positioning (Fast-PPP) is a satellite-based navigation technique using an accurate real-time ionospheric modeling to achieve high accuracy quickly. In this paper, an end-to-end performance assessment of ... -
AATR an ionospheric activity indicator specifically based on GNSS measurements
Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Rovira Garcia, Adrià; González Casado, Guillermo; Ibáñez Segura, Deimos; Orús Pérez, Raul (2018-03-01)
Article
Accés obertThis work reviews an ionospheric activity indicator useful for identifying disturbed periods affecting the performance of Global Navigation Satellite System (GNSS). This index is based in the Along Arc TEC Rate (AATR) and ... -
Accuracy of ionospheric models used in GNSS and SBAS: methodology and analysis
Rovira Garcia, Adrià; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo; Ibáñez Segura, Deimos (2016-03-01)
Article
Accés restringit per acord de confidencialitat© 2015, Springer-Verlag Berlin Heidelberg. The characterization of the accuracy of ionospheric models currently used in global navigation satellite systems (GNSSs) is a long-standing issue. The characterization remains a ... -
An overview of methodologies for real-time detection, characterisation and tracking of traveling ionospheric disturbances developed in the TechTIDE project
Belehaki, Anna; Tsagouri, Ioanna; Altadill Felip, David; Blanch, Estefania; Borries, Claudia; Buresova, Dalia; Chum, Jaroslav; Galkin, Ivan; Juan Zornoza, José Miguel; Segarra, Antoni; Timote Bejarano, Cristhian Camilo (2020-08-04)
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Accés obertThe main objective of the TechTIDE project (warning and mitigation technologies for travelling ionospheric disturbances effects) is the development of an identification and tracking system for travelling ionospheric ... -
Answer to the comments on “Confirming geomagnetic Sfe by means of a solar flare detector based on GNSS”
Curto Subirats, Juan Jose; Juan Zornoza, José Miguel; Timote Bejarano, Cristhian Camilo (2020-04-20)
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Accés obertHernández-Pajares and García-Rigo have written a document criticizing our paper “Confirming geomagnetic Sfe by means of a solar flare detector based on GNSS. J Space Weather Space Clim 9: A42. https://doi.org/10.1051/swsc/2019040” ... -
Application of tomographic ionospheric corrections in WADGPS networks for real-time estimation of integrated water vapour
Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Colombo, Oscar L.; Van der Marel, Hans (Instituto de Navegacion de España, 2021)
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Accés obertIn recent years several authors have developed strategies that estimate the Integrated Water Vapor (IWV), proportional to the Zenith Tropospheric Delay (ZTD), in near real time --i.e. with a delay of one hour or more--. ... -
Applying the geodetic detrending technique for investigating the consistency of GPS L2P(Y) in several receivers
Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo; Rovira Garcia, Adrià; Timote Bejarano, Cristhian Camilo; Orús Pérez, Raul (2022-11)
Article
Accés obertGlobal Navigation Satellite System signals have been used for years to study high-frequency fluctuations (f>0.1Hz)intheionosphere. The customary procedure uses the geometry-free (GF) combination ofL1andL2carriers, for which ... -
Assessing the quality of ionospheric models through GNSS positioning error: methodology and results
Rovira Garcia, Adrià; Ibáñez Segura, Deimos; Orús Pérez, Raul; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo (2020-01-01)
Article
Accés obertSingle-frequency users of the global navigation satellite system (GNSS) must correct for the ionospheric delay. These corrections are available from global ionospheric models (GIMs). Therefore, the accuracy of the GIM is ... -
Automated GPS Signal-in-Space anomalies monitoring over more than 11 years
Sanz Subirana, Jaume; Juan Zornoza, José Miguel; López de Echazarreta, Carlos; González Casado, Guillermo; Rovira Garcia, Adrià; Alonso Alonso, María Teresa; Ibáñez Segura, Deimos (ION Publications (The Institute of navigation), 2019)
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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)
Comunicació de congrés
Accés restringit per política de l'editorialThe 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 ... -
Climatology of High and Low Latitude Scintillation in the Last Solar Cycle by Means of the Geodetic Detrending Technique
Rovira Garcia, Adrià; González Casado, Guillermo; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Orús Pérez, Raul (ION Publications (The Institute of navigation), 2020)
Text en actes de congrés
Accés restringit per política de l'editorialSignals from a Global Navigation Satellite System (GNSS) can be disturbed along the propagation ray path from the satellites to the receivers. The presence of irregularities in the electron density in the near-Earth space ... -
Confirming geomagnetic Sfe by means of a solar flare detector based on GNSS
Curto Subirats, Juan Jose; Juan Zornoza, José Miguel; Timote Bejarano, Cristhian Camilo (2019-11-28)
Article
Accés obertSolar Flares (SF) refer to sudden increases of electromagnetic radiation from the Sun lasting from minutes to hours. Irradiance in the Extremely Ultra-Violet (EUV) or X band is enhanced and it can produce a sudden ... -
Consolidated characterisation of an ionospheric indicator for the definition of EGNOS Ionospheric Conditions
Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2014-04-29)
Report de recerca
Accés restringit per acord de confidencialitat