A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases

The 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-constel...

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Autores: Rovira Garcia, Adrià|||0000-0002-7320-5029, Juan Zornoza, José Miguel|||0000-0003-1126-2367, Sanz Subirana, Jaume|||0000-0001-8880-7084, González Casado, Guillermo|||0000-0001-6765-2407, Ventura Traveset, Javier, Cacciapuoti, Luigi, Schoenemann, Erik
Tipo de documento: artigo
Data de publicação:2021
País:España
Recursos:Universitat Politècnica de Catalunya (UPC)
Repositório:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglês
OAI Identifier:oai:upcommons.upc.edu:2117/358993
Acesso em linha:https://hdl.handle.net/2117/358993
https://dx.doi.org/10.1002/navi.453
Access Level:Acceso aberto
Palavra-chave:Artificial satellites in navigation
Data transmission systems
Global Positioning System
Clock stability
Day boundary discontinuity (DBD)
Global Navigation Satellite Systems (GNSS)
Integer ambiguity resolution (IAR)
International GNSS Service (IGS)
Phase biases
Satèl·lits artificials en navegació
Dades--Transmissió
Sistema de posicionament global
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
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spelling A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biasesRovira Garcia, Adrià|||0000-0002-7320-5029Juan Zornoza, José Miguel|||0000-0003-1126-2367Sanz Subirana, Jaume|||0000-0001-8880-7084González Casado, Guillermo|||0000-0001-6765-2407Ventura Traveset, JavierCacciapuoti, LuigiSchoenemann, ErikArtificial satellites in navigationData transmission systemsGlobal Positioning SystemClock stabilityDay boundary discontinuity (DBD)Global Navigation Satellite Systems (GNSS)Integer ambiguity resolution (IAR)International GNSS Service (IGS)Phase biasesSatèl·lits artificials en navegacióDades--TransmissióSistema de posicionament globalÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaçosÀrees temàtiques de la UPC::Física::Astronomia i astrofísicaThe 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.The 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 ServicePeer Reviewed20212021-12-0120212021-12-21journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/358993https://dx.doi.org/10.1002/navi.453reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengEuropean Commission http://doi.org/10.13039/100010661 Horizon 2020 Framework Programme 797461 High Accuracy Navigation under Scintillation ConditionsAgencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 RTI2018-094295-B-I00 DESARROLLO DE UN SISTEMA INTEGRADO DE NAVEGACION POR SATELITE Y NAVEGACION INERCIAL PARA LA NAVEGACION AUTONOMA DE VEHICULOS A ESCALA MUNDIALopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial 4.0 Internationalhttps://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3589932026-05-27T15:37:01Z
dc.title.none.fl_str_mv A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases
title A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases
spellingShingle A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases
Rovira Garcia, Adrià|||0000-0002-7320-5029
Artificial satellites in navigation
Data transmission systems
Global Positioning System
Clock stability
Day boundary discontinuity (DBD)
Global Navigation Satellite Systems (GNSS)
Integer ambiguity resolution (IAR)
International GNSS Service (IGS)
Phase biases
Satèl·lits artificials en navegació
Dades--Transmissió
Sistema de posicionament global
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
title_short A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases
title_full A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases
title_fullStr A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases
title_full_unstemmed A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases
title_sort A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases
dc.creator.none.fl_str_mv Rovira Garcia, Adrià|||0000-0002-7320-5029
Juan Zornoza, José Miguel|||0000-0003-1126-2367
Sanz Subirana, Jaume|||0000-0001-8880-7084
González Casado, Guillermo|||0000-0001-6765-2407
Ventura Traveset, Javier
Cacciapuoti, Luigi
Schoenemann, Erik
author Rovira Garcia, Adrià|||0000-0002-7320-5029
author_facet Rovira Garcia, Adrià|||0000-0002-7320-5029
Juan Zornoza, José Miguel|||0000-0003-1126-2367
Sanz Subirana, Jaume|||0000-0001-8880-7084
González Casado, Guillermo|||0000-0001-6765-2407
Ventura Traveset, Javier
Cacciapuoti, Luigi
Schoenemann, Erik
author_role author
author2 Juan Zornoza, José Miguel|||0000-0003-1126-2367
Sanz Subirana, Jaume|||0000-0001-8880-7084
González Casado, Guillermo|||0000-0001-6765-2407
Ventura Traveset, Javier
Cacciapuoti, Luigi
Schoenemann, Erik
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Artificial satellites in navigation
Data transmission systems
Global Positioning System
Clock stability
Day boundary discontinuity (DBD)
Global Navigation Satellite Systems (GNSS)
Integer ambiguity resolution (IAR)
International GNSS Service (IGS)
Phase biases
Satèl·lits artificials en navegació
Dades--Transmissió
Sistema de posicionament global
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
topic Artificial satellites in navigation
Data transmission systems
Global Positioning System
Clock stability
Day boundary discontinuity (DBD)
Global Navigation Satellite Systems (GNSS)
Integer ambiguity resolution (IAR)
International GNSS Service (IGS)
Phase biases
Satèl·lits artificials en navegació
Dades--Transmissió
Sistema de posicionament global
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
description The 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.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-12-01
2021
2021-12-21
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/358993
https://dx.doi.org/10.1002/navi.453
url https://hdl.handle.net/2117/358993
https://dx.doi.org/10.1002/navi.453
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission http://doi.org/10.13039/100010661 Horizon 2020 Framework Programme 797461 High Accuracy Navigation under Scintillation Conditions
Agencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 RTI2018-094295-B-I00 DESARROLLO DE UN SISTEMA INTEGRADO DE NAVEGACION POR SATELITE Y NAVEGACION INERCIAL PARA LA NAVEGACION AUTONOMA DE VEHICULOS A ESCALA MUNDIAL
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial 4.0 International
https://creativecommons.org/licenses/by-nc/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial 4.0 International
https://creativecommons.org/licenses/by-nc/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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