Distinguishing ionospheric scintillation from multipath in GNSS signals using geodetic receivers
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , |
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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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 |
|
_version_ |
1808129479076216832 |