Distinguishing ionospheric scintillation from multipath in GNSS signals using geodetic receivers

Detalhes bibliográficos
Autor(a) principal: Li, Chendong
Data de Publicação: 2022
Outros Autores: Hancock, Craig M., Vadakke Veettil, Sreeja, Zhao, Dongsheng, Galera Monico, João F. [UNESP], Hamm, Nicholas A. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s10291-022-01328-x
http://hdl.handle.net/11449/247719
Resumo: Ionospheric scintillation is an important phenomenon affecting GNSS positioning accuracy. Scintillation parameters, S4 and σφ, are usually used to characterize scintillation in amplitude and phase, respectively. S4 and σφ can be contaminated by multipath effects in certain circumstances. Similarly, the multipath parameter (MP) can also be affected by scintillation. Therefore, it is difficult to distinguish whether an increase in the scintillation parameters and MP is caused by scintillation or multipath. However, it is important to know the type of interference to apply appropriate mitigation measures. It is known that the multipath effect is periodic as compared to scintillation if the receiver location is fixed. Based on this peculiar feature, this article proposes to use parameters MP, S4, σφ and the rate of change of total electron content index (ROTI) characterize the receiver station surroundings so that multipath and scintillation effects can be distinguished. The Global Positioning System (GPS) data for two one-month records at two pairs of low-latitude stations, namely SAO0P-SJCU and SJCU-SJCE, located in Sao Paulo, Brazil, were used to generate elevation layered plots and parameter values against elevation and azimuth (PEA) plots for each satellite on each day. The second station was used as a reference for validating the conclusion. The results provide evidence that the proposed methodology can identify all multipath, scintillation and hybrid (of multipath and scintillation) events using scintillation indices and identify some multipath, scintillation and hybrid events using MP and ROTI. For hybrid events below 30° elevation, this methodology is not effective.
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spelling Distinguishing ionospheric scintillation from multipath in GNSS signals using geodetic receiversGNSSMultipathROTIScintillation eventScintillation parametersIonospheric scintillation is an important phenomenon affecting GNSS positioning accuracy. Scintillation parameters, S4 and σφ, are usually used to characterize scintillation in amplitude and phase, respectively. S4 and σφ can be contaminated by multipath effects in certain circumstances. Similarly, the multipath parameter (MP) can also be affected by scintillation. Therefore, it is difficult to distinguish whether an increase in the scintillation parameters and MP is caused by scintillation or multipath. However, it is important to know the type of interference to apply appropriate mitigation measures. It is known that the multipath effect is periodic as compared to scintillation if the receiver location is fixed. Based on this peculiar feature, this article proposes to use parameters MP, S4, σφ and the rate of change of total electron content index (ROTI) characterize the receiver station surroundings so that multipath and scintillation effects can be distinguished. The Global Positioning System (GPS) data for two one-month records at two pairs of low-latitude stations, namely SAO0P-SJCU and SJCU-SJCE, located in Sao Paulo, Brazil, were used to generate elevation layered plots and parameter values against elevation and azimuth (PEA) plots for each satellite on each day. The second station was used as a reference for validating the conclusion. The results provide evidence that the proposed methodology can identify all multipath, scintillation and hybrid (of multipath and scintillation) events using scintillation indices and identify some multipath, scintillation and hybrid events using MP and ROTI. For hybrid events below 30° elevation, this methodology is not effective.Key Laboratory of Geospace Environment and Geodesy, Ministry of EducationNatural Science Foundation of Jiangsu ProvinceFaculty of Science and Engineering University of NottinghamSchool of Architecture Building and Civil Engineering Loughborough UniversityNottingham Geospatial Institute University of NottinghamNASG Key Laboratory of Land Environment and Disaster Monitoring China University of Mining and TechnologySchool of Environment and Spatial Informatics China University of Mining and TechnologyDepartamento de Cartografia Universidade Estadual Paulista (UNESP)Departamento de Cartografia Universidade Estadual Paulista (UNESP)Key Laboratory of Geospace Environment and Geodesy, Ministry of Education: 20-01-09Natural Science Foundation of Jiangsu Province: BK20200664University of NottinghamLoughborough UniversityChina University of Mining and TechnologyUniversidade Estadual Paulista (UNESP)Li, ChendongHancock, Craig M.Vadakke Veettil, SreejaZhao, DongshengGalera Monico, João F. [UNESP]Hamm, Nicholas A. S.2023-07-29T13:24:00Z2023-07-29T13:24:00Z2022-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s10291-022-01328-xGPS Solutions, v. 26, n. 4, 2022.1521-18861080-5370http://hdl.handle.net/11449/24771910.1007/s10291-022-01328-x2-s2.0-85139413759Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGPS Solutionsinfo:eu-repo/semantics/openAccess2024-06-18T15:01:54Zoai:repositorio.unesp.br:11449/247719Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:59:19.194813Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Distinguishing ionospheric scintillation from multipath in GNSS signals using geodetic receivers
title Distinguishing ionospheric scintillation from multipath in GNSS signals using geodetic receivers
spellingShingle Distinguishing ionospheric scintillation from multipath in GNSS signals using geodetic receivers
Li, Chendong
GNSS
Multipath
ROTI
Scintillation event
Scintillation parameters
title_short Distinguishing ionospheric scintillation from multipath in GNSS signals using geodetic receivers
title_full Distinguishing ionospheric scintillation from multipath in GNSS signals using geodetic receivers
title_fullStr Distinguishing ionospheric scintillation from multipath in GNSS signals using geodetic receivers
title_full_unstemmed Distinguishing ionospheric scintillation from multipath in GNSS signals using geodetic receivers
title_sort Distinguishing ionospheric scintillation from multipath in GNSS signals using geodetic receivers
author Li, Chendong
author_facet Li, Chendong
Hancock, Craig M.
Vadakke Veettil, Sreeja
Zhao, Dongsheng
Galera Monico, João F. [UNESP]
Hamm, Nicholas A. S.
author_role author
author2 Hancock, Craig M.
Vadakke Veettil, Sreeja
Zhao, Dongsheng
Galera Monico, João F. [UNESP]
Hamm, Nicholas A. S.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv University of Nottingham
Loughborough University
China University of Mining and Technology
Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Li, Chendong
Hancock, Craig M.
Vadakke Veettil, Sreeja
Zhao, Dongsheng
Galera Monico, João F. [UNESP]
Hamm, Nicholas A. S.
dc.subject.por.fl_str_mv GNSS
Multipath
ROTI
Scintillation event
Scintillation parameters
topic GNSS
Multipath
ROTI
Scintillation event
Scintillation parameters
description Ionospheric scintillation is an important phenomenon affecting GNSS positioning accuracy. Scintillation parameters, S4 and σφ, are usually used to characterize scintillation in amplitude and phase, respectively. S4 and σφ can be contaminated by multipath effects in certain circumstances. Similarly, the multipath parameter (MP) can also be affected by scintillation. Therefore, it is difficult to distinguish whether an increase in the scintillation parameters and MP is caused by scintillation or multipath. However, it is important to know the type of interference to apply appropriate mitigation measures. It is known that the multipath effect is periodic as compared to scintillation if the receiver location is fixed. Based on this peculiar feature, this article proposes to use parameters MP, S4, σφ and the rate of change of total electron content index (ROTI) characterize the receiver station surroundings so that multipath and scintillation effects can be distinguished. The Global Positioning System (GPS) data for two one-month records at two pairs of low-latitude stations, namely SAO0P-SJCU and SJCU-SJCE, located in Sao Paulo, Brazil, were used to generate elevation layered plots and parameter values against elevation and azimuth (PEA) plots for each satellite on each day. The second station was used as a reference for validating the conclusion. The results provide evidence that the proposed methodology can identify all multipath, scintillation and hybrid (of multipath and scintillation) events using scintillation indices and identify some multipath, scintillation and hybrid events using MP and ROTI. For hybrid events below 30° elevation, this methodology is not effective.
publishDate 2022
dc.date.none.fl_str_mv 2022-10-01
2023-07-29T13:24:00Z
2023-07-29T13:24:00Z
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/10.1007/s10291-022-01328-x
GPS Solutions, v. 26, n. 4, 2022.
1521-1886
1080-5370
http://hdl.handle.net/11449/247719
10.1007/s10291-022-01328-x
2-s2.0-85139413759
url http://dx.doi.org/10.1007/s10291-022-01328-x
http://hdl.handle.net/11449/247719
identifier_str_mv GPS Solutions, v. 26, n. 4, 2022.
1521-1886
1080-5370
10.1007/s10291-022-01328-x
2-s2.0-85139413759
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv GPS Solutions
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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