Exploració per autor "Juan Zornoza, José Miguel"
Ara es mostren els items 8-27 de 118
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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)
Article
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)
Article
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)
Text en actes de congrés
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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Accés restringit per decisió de l'autor -
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 -
D.01. GPS-DF FE characterisation report
Sanz Subirana, Jaume; Juan Zornoza, José Miguel; Alonso Alonso, María Teresa (2018-01-14)
Report de recerca
Accés restringit per acord de confidencialitat -
Data gathering and methodology
Sanz Subirana, Jaume; Juan Zornoza, José Miguel (2018-10-31)
Report de recerca
Accés obertThe aim of this WP5 is to specify the impact of TID in EGNOS, N-RTK and HF systems through statistical correlation of the performance data recorded from system operators and of TID detection results. The analysis will be ... -
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)
Comunicació de congrés
Accés restringit per política de l'editorialIn 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 ... -
Description of the experiment set-up in Vietnam
Quang, Phuong Xuan; Vinh, La The; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; García Rigo, Alberto; Hai Tung, Ta (2013-07-03)
Report de recerca
Accés restringit per decisió de l'autor -
EGNOS 1046 maritime service assessment
Ibáñez Segura, Deimos; Rovira Garcia, Adrià; Alonso Alonso, María Teresa; Sanz Subirana, Jaume; Juan Zornoza, José Miguel; González Casado, Guillermo; López Martínez, Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2020-01-01)
Article
Accés obertThe present contribution evaluates how the European Geostationary Navigation Overlay System (EGNOS) meets the International Maritime Organization (IMO) requirements established in its Resolution A.1046 for navigation in ... -
Enhanced neural network model for regional ionospheric modeling and evaluation under different solar-geomagnetic conditions
Dong, Yanfeng; Gao, Chengfa; Long, Fengyang; Nie, Wenfeng; Juan Zornoza, José Miguel; Rovira Garcia, Adrià; Zhang, Ruicheng (2023-03-01)
Article
Accés obertMonitoring spatiotemporal variations of ionospheric vertical total electron content (VTEC) is crucial for space weather and satellite positioning. In the present study, an enhanced neural network (ENN) model is proposed ... -
Enhanced precise point positioning for GNSS users
Juan Zornoza, José Miguel; Hernández Pajares, Manuel; Sanz Subirana, Jaume; Ramos Bosch, Pedro; Aragón Ángel, María Ángeles; Orus, R.; Ochieng, W.; Feng, S; Jofre, Martí; Coutinho, P; Samson, Jaron; Tossaint, Michel Mathias Maria (Institute of Electrical and Electronics Engineers (IEEE), 2012-09-21)
Article
Accés restringit per política de l'editorialThis paper summarizes the main results obtained during the development of an Enhanced Precise Point Positioning (EPPP) Global Navigation Satellite Systems multifrequency user algorithm. The main innovations include the ...