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dc.contributor.authorRovira Garcia, Adrià
dc.contributor.authorJuan Zornoza, José Miguel
dc.contributor.authorSanz Subirana, Jaume
dc.contributor.authorGonzález Casado, Guillermo
dc.contributor.authorVentura Traveset, Javier
dc.contributor.authorCacciapuoti, Luigi
dc.contributor.authorSchoenemann, Erik
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Matemàtiques
dc.date.accessioned2021-12-21T15:40:59Z
dc.date.available2021-12-21T15:40:59Z
dc.date.issued2021-12
dc.identifier.citationRovira-Garcia, A. [et al.]. A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases. "Navigation (Washington)", Desembre 2021, vol. 68, núm. 4, p. 815-828.
dc.identifier.issn0028-1522
dc.identifier.urihttp://hdl.handle.net/2117/358993
dc.description.abstractThe 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 accurately as possible. This work presents a multi-frequency and multi-constellation method for estimating satellite and receiver clock corrections, starting from unambiguous, uncombined, and undifferenced carrier-phase measurements. A byproduct of the estimation process is phase biases (i.e., the hardware delays of the carrier-phase measurements occurring at receivers and satellites). The stability and predictability of our clock estimates for receivers and satellites (GPS and Galileo) are compared with those obtained by the International GNSS Service (IGS), whereas the phase biases are assessed against two independent determinations involving combinations of carrier-phase measurements. We conclude that the method reduces day boundary discontinuities in the clock corrections, and that the estimated phase biases reproduce variabilities already observed by other authors.
dc.description.sponsorshipThe present work was supported in part by the Euro-pean Space Agency contract (REL-GAL) N.4000122402/17/NL/IB, by the project RTI2018-094295-B-I00 funded bytheMCIN/AEI10.13039/501100011033whichisco-foundedby the FEDER programme, and by the Horizon 2020 MarieSkłodowska-Curie Individual Global Fellowship 797461NAVSCIN. The authors acknowledge the use of data andproducts provided by the International GNSS Service
dc.format.extent14 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços
dc.subjectÀrees temàtiques de la UPC::Física::Astronomia i astrofísica
dc.subject.lcshArtificial satellites in navigation
dc.subject.lcshData transmission systems
dc.subject.lcshGlobal Positioning System
dc.subject.otherClock stability
dc.subject.otherDay boundary discontinuity (DBD)
dc.subject.otherGlobal Navigation Satellite Systems (GNSS)
dc.subject.otherInteger ambiguity resolution (IAR)
dc.subject.otherInternational GNSS Service (IGS)
dc.subject.otherPhase biases
dc.titleA multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases
dc.typeArticle
dc.subject.lemacSatèl·lits artificials en navegació
dc.subject.lemacDades--Transmissió
dc.subject.lemacSistema de posicionament global
dc.contributor.groupUniversitat Politècnica de Catalunya. gAGE - Grup d'Astronomia i Geomàtica
dc.identifier.doi10.1002/navi.453
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://onlinelibrary.wiley.com/doi/full/10.1002/navi.453
dc.rights.accessOpen Access
local.identifier.drac32415679
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020/797461/EU/High Accuracy Navigation under Scintillation Conditions/NAVSCIN
dc.relation.projectidinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-094295-B-I00/ES/DESARROLLO DE UN SISTEMA INTEGRADO DE NAVEGACION POR SATELITE Y NAVEGACION INERCIAL PARA LA NAVEGACION AUTONOMA DE VEHICULOS A ESCALA MUNDIAL/
local.citation.authorRovira-Garcia, A.; Juan, J.; Sanz, J.; Gonzalez-Casado, G.; Ventura, J.; Cacciapuoti, L.; Schoenemann, E.
local.citation.publicationNameNavigation (Washington)
local.citation.volume68
local.citation.number4
local.citation.startingPage815
local.citation.endingPage828


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