Correlation between ionospheric scintillation effects and GNSS positioning over Brazil during the last solar maximum (2012–2014)

Detalhes bibliográficos
Autor(a) principal: Alves, Daniele Barroca Marra [UNESP]
Data de Publicação: 2019
Outros Autores: de Souza, Eniuce Menezes, Gouveia, Tayná Aparecida Ferreira [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.jastp.2019.03.013
http://hdl.handle.net/11449/187809
Resumo: GNSS (Global Navigation Satellite Systems) can provide high accuracy positioning at low cost. But, depending on the sources of error, e.g. the atmospheric effects, this accuracy can be degraded. The ionosphere is one of the most important error sources in GNSS positioning. Among several effects caused by the ionosphere, irregularities such as ionospheric scintillations are very relevant. They can cause cycle slips, degrade the positioning accuracy and, when severe enough, can even lead to a complete loss of signal lock. Brazil, in particular, is located in one of the regions most affected by ionospheric scintillations and these effects were intensified during the last solar maximum. The main goal of this paper is to evaluate the impact of scintillation effects on the degradation of positioning during the last solar maximum. Data from 2012 to 2014 of three reference stations located in different regions of Brazil was used. Statistically significant correlations were identified from Spearman's correlation coefficient. Using Odds Ratio, an effect-size statistic, it was possible to see that the chance of large discrepancies in 3D positioning coordinates could be three times greater under strong scintillation effects (S4 ≥ 1) than under moderate ones (0.5<S4<1).
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spelling Correlation between ionospheric scintillation effects and GNSS positioning over Brazil during the last solar maximum (2012–2014)GNSS positioningIonosphereOdds ratioScintillationSpearman correlationTime seriesGNSS (Global Navigation Satellite Systems) can provide high accuracy positioning at low cost. But, depending on the sources of error, e.g. the atmospheric effects, this accuracy can be degraded. The ionosphere is one of the most important error sources in GNSS positioning. Among several effects caused by the ionosphere, irregularities such as ionospheric scintillations are very relevant. They can cause cycle slips, degrade the positioning accuracy and, when severe enough, can even lead to a complete loss of signal lock. Brazil, in particular, is located in one of the regions most affected by ionospheric scintillations and these effects were intensified during the last solar maximum. The main goal of this paper is to evaluate the impact of scintillation effects on the degradation of positioning during the last solar maximum. Data from 2012 to 2014 of three reference stations located in different regions of Brazil was used. Statistically significant correlations were identified from Spearman's correlation coefficient. Using Odds Ratio, an effect-size statistic, it was possible to see that the chance of large discrepancies in 3D positioning coordinates could be three times greater under strong scintillation effects (S4 ≥ 1) than under moderate ones (0.5<S4<1).Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)European CommissionUNESP - São Paulo State University School of Technology and Sciences, Roberto Simonsen, 305Maringa State University - UEM – Brazil, Colombo Av., 5790UNESP - São Paulo State University School of Technology and Sciences, Roberto Simonsen, 305FAPESP: 06/04008-2FAPESP: 2012/19906-7CNPq: 303079/2011-8CNPq: 304247/2012-0CNPq: 473973/2012European Commission: FP7-GALILEO-2009-GSAEuropean Commission: FP7–GALILEO–2011–GSA–1aUniversidade Estadual Paulista (Unesp)Universidade Estadual de Maringá (UEM)Alves, Daniele Barroca Marra [UNESP]de Souza, Eniuce MenezesGouveia, Tayná Aparecida Ferreira [UNESP]2019-10-06T15:47:52Z2019-10-06T15:47:52Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.jastp.2019.03.013Journal of Atmospheric and Solar-Terrestrial Physics.1364-6826http://hdl.handle.net/11449/18780910.1016/j.jastp.2019.03.0132-s2.0-85067960144Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Atmospheric and Solar-Terrestrial Physicsinfo:eu-repo/semantics/openAccess2021-10-23T19:02:08Zoai:repositorio.unesp.br:11449/187809Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:58:34.018574Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Correlation between ionospheric scintillation effects and GNSS positioning over Brazil during the last solar maximum (2012–2014)
title Correlation between ionospheric scintillation effects and GNSS positioning over Brazil during the last solar maximum (2012–2014)
spellingShingle Correlation between ionospheric scintillation effects and GNSS positioning over Brazil during the last solar maximum (2012–2014)
Alves, Daniele Barroca Marra [UNESP]
GNSS positioning
Ionosphere
Odds ratio
Scintillation
Spearman correlation
Time series
title_short Correlation between ionospheric scintillation effects and GNSS positioning over Brazil during the last solar maximum (2012–2014)
title_full Correlation between ionospheric scintillation effects and GNSS positioning over Brazil during the last solar maximum (2012–2014)
title_fullStr Correlation between ionospheric scintillation effects and GNSS positioning over Brazil during the last solar maximum (2012–2014)
title_full_unstemmed Correlation between ionospheric scintillation effects and GNSS positioning over Brazil during the last solar maximum (2012–2014)
title_sort Correlation between ionospheric scintillation effects and GNSS positioning over Brazil during the last solar maximum (2012–2014)
author Alves, Daniele Barroca Marra [UNESP]
author_facet Alves, Daniele Barroca Marra [UNESP]
de Souza, Eniuce Menezes
Gouveia, Tayná Aparecida Ferreira [UNESP]
author_role author
author2 de Souza, Eniuce Menezes
Gouveia, Tayná Aparecida Ferreira [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade Estadual de Maringá (UEM)
dc.contributor.author.fl_str_mv Alves, Daniele Barroca Marra [UNESP]
de Souza, Eniuce Menezes
Gouveia, Tayná Aparecida Ferreira [UNESP]
dc.subject.por.fl_str_mv GNSS positioning
Ionosphere
Odds ratio
Scintillation
Spearman correlation
Time series
topic GNSS positioning
Ionosphere
Odds ratio
Scintillation
Spearman correlation
Time series
description GNSS (Global Navigation Satellite Systems) can provide high accuracy positioning at low cost. But, depending on the sources of error, e.g. the atmospheric effects, this accuracy can be degraded. The ionosphere is one of the most important error sources in GNSS positioning. Among several effects caused by the ionosphere, irregularities such as ionospheric scintillations are very relevant. They can cause cycle slips, degrade the positioning accuracy and, when severe enough, can even lead to a complete loss of signal lock. Brazil, in particular, is located in one of the regions most affected by ionospheric scintillations and these effects were intensified during the last solar maximum. The main goal of this paper is to evaluate the impact of scintillation effects on the degradation of positioning during the last solar maximum. Data from 2012 to 2014 of three reference stations located in different regions of Brazil was used. Statistically significant correlations were identified from Spearman's correlation coefficient. Using Odds Ratio, an effect-size statistic, it was possible to see that the chance of large discrepancies in 3D positioning coordinates could be three times greater under strong scintillation effects (S4 ≥ 1) than under moderate ones (0.5<S4<1).
publishDate 2019
dc.date.none.fl_str_mv 2019-10-06T15:47:52Z
2019-10-06T15:47:52Z
2019-01-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.jastp.2019.03.013
Journal of Atmospheric and Solar-Terrestrial Physics.
1364-6826
http://hdl.handle.net/11449/187809
10.1016/j.jastp.2019.03.013
2-s2.0-85067960144
url http://dx.doi.org/10.1016/j.jastp.2019.03.013
http://hdl.handle.net/11449/187809
identifier_str_mv Journal of Atmospheric and Solar-Terrestrial Physics.
1364-6826
10.1016/j.jastp.2019.03.013
2-s2.0-85067960144
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Atmospheric and Solar-Terrestrial Physics
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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