Exploració per autor "Hernández Pajares, Manuel"
Ara es mostren els items 68-87 de 202
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IGS real-time service for global ionospheric total electron content modeling
Li, Zishen; Wang, Ningbo; Hernández Pajares, Manuel; Yuan, Yunbin; Krankowski, Andrzej; Liu, Ang; Zha, Jiuping; García Rigo, Alberto; Roma Dollase, David; Yang, Heng (2020-02-18)
Article
Accés restringit per política de l'editorialBenefiting from global multi-frequency and multi-constellation GNSS measurements provided by the experimental International GNSS real-time service (IGS RTS), a predicting-plus-modeling approach employed by Chinese Academy ... -
Impact and implementation of higher-order ionospheric effects on precise GNSS applications
Hadas, Tomasz; Krypiak-Gregorczyk, Anna; Hernández Pajares, Manuel; Kaplon, Jan; Paziewski, Jacek; Wielgosz, Pawel; García Rigo, Alberto; Kazmierski, K.; Sosnica, Krzysztof; Kwasniak, D.; Sierny, J.; Bosy, Jaroslaw; Pucilowski, Marcin; Szyszko, Robert; Portasiak, Krystian; Olivares, German; Gulyaeva, Tamara L.; Orús Pérez, Raul (2017-11)
Article
Accés obertHigh precision Global Navigation Satellite Systems (GNSS) positioning and time transfer require correcting signal delays, in particular higher-order ionospheric (I2+) terms. We present a consolidated model to correct second- ... -
Impact and synergies of GIM error estimates on the VTEC interpolation and single-frequency PPP at low latitude region
Jerez, Gabriel Olivera; Hernández Pajares, Manuel; Goss, Andreas; Menezes da Silva, Crislaine; Alves, Daniele Barroca Marra; Monico, João Francisco Galera (2022-04-01)
Article
Accés obertThe vertical total electron content (VTEC) is one of the key quantities to describe variations of the ionosphere and can be pro- vided to users to correct the ionospheric disturbances for GNSS (Global Navigation Satellite ... -
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)
Text en actes de congrés
Accés obert -
Improved Abel transform inversion: application to COSMIC/FORMOSAT-3 ionospheric occultations
Aragón Ángel, María Ángeles; Hernández Pajares, Manuel; Miguel Juan, Miguel; Sanz Subirana, Jaume; Altadill, David; Liou, YueiAn; Lee, ChienChih (2008-10-02)
Comunicació de congrés
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Improved MSTID modelling and impact on precise GNSS processing
Hernández Pajares, Manuel; Wielgosz, Pawel; Paziewski, Jacek; Krypiak-Gregorczyk, Anna; Stepniak, Katarzyna; Bosy, Jaroslaw; Kaplon, Jan; Hadas, Tomasz; Orús Pérez, Raul; Monte Moreno, Enrique; Yang, Heng; Olivares Pulido, Germán; García Rigo, Alberto (2015)
Comunicació de congrés
Accés restringit per política de l'editorial -
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
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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 obertIn 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 obertInversion 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 ... -
Influence of temporal resolution on the performance of global ionospheric maps
Liu, Qi; Hernández Pajares, Manuel; Lyu, Haixia; Goss, Andreas (2021-03)
Article
Accés obertGlobal ionosphere maps (GIM) computed from dual-frequency GNSS measurements have been widely used for monitoring ionosphere as well as providing ionospheric corrections in Space Geodesy since 1998. This work focuses on a ... -
Inputs received from Ionospheric research groups on activities related with RT global electron content determination
Hernández Pajares, Manuel (2014)
Text en actes de congrés
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INSPIRE: DI 1-1 Technical Note with assessment of state-of-the-art of earthquake precursors identification
Krankowski, Andrzej; Pulinets, Sergey; Cherniak, Iurii; Hernández Pajares, Manuel; Rothkael, Hanna; Rojas Gregorio, José Ignacio; García Rigo, Alberto (2014-12-25)
Report de recerca
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INSPIRE: DI 1-2 Technical Note with definition of methodology for identification of earthquake signatures
Krankowski, Andrzej; Pulinets, Sergey; Cherniak, Iurii; Hernández Pajares, Manuel; Rothkael, Hanna; García Rigo, Alberto (2014-12-25)
Report de recerca
Accés restringit per acord de confidencialitat -
INSPIRE: DI 2-1 Technical Note describing the design and development of the database with performance criteria
Krankowski, Andrzej; Hernández Pajares, Manuel; Pulinets, Sergey; Cherniak, Iurii; Rothkael, Hanna; Rojas Gregorio, José Ignacio; García Rigo, Alberto (2015-01-26)
Report de recerca
Accés restringit per acord de confidencialitat -
Integrity monitoring for carrier phase ambiguities
Jofre, Martí; Ramos Bosch, Pedro; Feng, S.; Ochieng, W.; Samson, J; Tossaint, M; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Aragón Ángel, María Ángeles (2012-01)
Article
Accés obertThe determination of the correct integer number of carrier cycles (integer ambiguity) is the key to high accuracy positioning with carrier phase measurements from Global Navigation Satellite Systems (GNSS). There are a ... -
Internal report. Numerical methods for medium scale traveling ionospheric disturbances signal pre-processing
Yang, Heng; Monte Moreno, Enrique; Hernández Pajares, Manuel (2015-01-15)
Report de recerca
Accés obertIn this paper we discuss the e ects of several signal preprocessing methods for enhancing the Medium Scale Traveling Ionospheric Dis- turbances (MSTIDs) signal. The MSTIDs signal are the ionospheric signatures of waves ... -
Internal report. Solving mixed integer non-linear programming problem applied to GNSS data
Yang, Heng; Monte Moreno, Enrique; Hernández Pajares, Manuel (2014-11-07)
Report de recerca
Accés obertThe purpose of this paper is to characterize Medium Scale Trav- eling Ionospheric Disturbances (MSTIDs), by means of Mixed Integer Nonlinear Programming (MINLP). The MINLP techniques are used to for estimating the ... -
Internal report. Spectral methods for time delay estimation of MSTIDs signal
Yang, Heng; Monte Moreno, Enrique; Hernández Pajares, Manuel (2015-02-14)
Report de recerca
Accés obertThe primary goal of this work is to summarize spectral meth- ods to estimate the time delay variations of the detrended Medium Scale Traveling Ionospheric Disturbances (MSTIDs) signals and pre- liminarily discuss the ... -
Interpretation of the tropospheric gradients estimated with GPS during hurricane Harvey
Graffigna, Victoria; Hernández Pajares, Manuel; Gende, Mauricio; Azpilicueta, Francisco; Antico, Pablo (2019-01-01)
Article
Accés obertDuring the last decade Global Positioning System (GPS) Continuous Operating Reference Stations networks have become a new important data source for meteorology. This has dramatically improved the ability to remotely sense ... -
Ionosphere monitoring and forecast activities within the IAG working group “Ionosphere Prediction”
Hoque, Mainul; García Rigo, Alberto; Erdogan, Eren; Cueto, M.; Jakowski, Norbert; Berdermann, Jens; Hernández Pajares, Manuel; Schmidt, Michael; Wilken, Volken (2017)
Comunicació de congrés
Accés obertIonospheric disturbances can affect technologies in space and on Earth disrupting satellite and airline operations, communications networks, navigation systems. As the world becomes ever more dependent on these technologies, ...