Towards forecasting and mitigating ionospheric scintillation effects on GNSS
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1109/ELMAR.2007.4418801 http://hdl.handle.net/11449/70014 |
Resumo: | The effect of the ionosphere on the signals of Global Navigation Satellite Systems (GNSS), such as the Global Positionig System (GPS) and the proposed European Galileo, is dependent on the ionospheric electron density, given by its Total Electron Content (TEC). Ionospheric time-varying density irregularities may cause scintillations, which are fluctuations in phase and amplitude of the signals. Scintillations occur more often at equatorial and high latitudes. They can degrade navigation and positioning accuracy and may cause loss of signal tracking, disrupting safety-critical applications, such as marine navigation and civil aviation. This paper addresses the results of initial research carried out on two fronts that are relevant to GNSS users if they are to counter ionospheric scintillations, i.e. forecasting and mitigating their effects. On the forecasting front, the dynamics of scintillation occurrence were analysed during the severe ionospheric storm that took place on the evening of 30 October 2003, using data from a network of GPS Ionospheric Scintillation and TEC Monitor (GISTM) receivers set up in Northern Europe. Previous results [1] indicated that GPS scintillations in that region can originate from ionospheric plasma structures from the American sector. In this paper we describe experiments that enabled confirmation of those findings. On the mitigation front we used the variance of the output error of the GPS receiver DLL (Delay Locked Loop) to modify the least squares stochastic model applied by an ordinary receiver to compute position. This error was modelled according to [2], as a function of the S4 amplitude scintillation index measured by the GISTM receivers. An improvement of up to 21% in relative positioning accuracy was achieved with this technnique. |
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Towards forecasting and mitigating ionospheric scintillation effects on GNSSGalileoGNSSGPSIonosphereIonospheric scintillationTotal Electron Content (TEC)Atmospheric electricityCurve fittingError analysisForecastingGlobal positioning systemIonospheric measurementLeast squares approximationsLight emissionLuminescenceMarine applicationsMathematical modelsNavigationResearchSatellite navigation aidsStochastic modelsAmplitude scintillation indexDelay-locked loop (DLL)Density irregularitiesEuropeanGalileo (CO)Global navigation satellite systems (GLONASS)GPS receiversHigh LatitudesIn phase (IP)International symposiumIonospheric electronIonospheric plasmasIonospheric scintillationsIonospheric stormLeast squares (LS)Loss of signalMarine navigationMobile multimediaMonitor (CO)Navigation and positioningOutput error (OE)Paper addressesRelative positioningSafety critical applicationsTime-varyingTotal electron content (TEC)ScintillationThe effect of the ionosphere on the signals of Global Navigation Satellite Systems (GNSS), such as the Global Positionig System (GPS) and the proposed European Galileo, is dependent on the ionospheric electron density, given by its Total Electron Content (TEC). Ionospheric time-varying density irregularities may cause scintillations, which are fluctuations in phase and amplitude of the signals. Scintillations occur more often at equatorial and high latitudes. They can degrade navigation and positioning accuracy and may cause loss of signal tracking, disrupting safety-critical applications, such as marine navigation and civil aviation. This paper addresses the results of initial research carried out on two fronts that are relevant to GNSS users if they are to counter ionospheric scintillations, i.e. forecasting and mitigating their effects. On the forecasting front, the dynamics of scintillation occurrence were analysed during the severe ionospheric storm that took place on the evening of 30 October 2003, using data from a network of GPS Ionospheric Scintillation and TEC Monitor (GISTM) receivers set up in Northern Europe. Previous results [1] indicated that GPS scintillations in that region can originate from ionospheric plasma structures from the American sector. In this paper we describe experiments that enabled confirmation of those findings. On the mitigation front we used the variance of the output error of the GPS receiver DLL (Delay Locked Loop) to modify the least squares stochastic model applied by an ordinary receiver to compute position. This error was modelled according to [2], as a function of the S4 amplitude scintillation index measured by the GISTM receivers. An improvement of up to 21% in relative positioning accuracy was achieved with this technnique.Institute of Engineering Surveying and Space Geodesy University of Nottingham, University Park, Nottingham, NG7 2RDNational Institute for Geophysics and Volcanology (INGV), Via di Vigna Murata 605, Rome, 00143Department of Cartography Sao Paulo State University (UNESP) at Presidente Prudente, 19060-900, Sao PauloDepartment of Electronic and Electrical Engineering University of Bath, Bath, BA2 7AYDepartment of Cartography Sao Paulo State University (UNESP) at Presidente Prudente, 19060-900, Sao PauloUniversity of NottinghamNational Institute for Geophysics and Volcanology (INGV)Universidade Estadual Paulista (Unesp)University of BathAquino, M.Dodson, A.DeFranceschi, G.Alfonsi, L.Romano, V.Monico, J. F G [UNESP]Marques, H. [UNESP]Mitchell, C.2014-05-27T11:22:39Z2014-05-27T11:22:39Z2007-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject63-67http://dx.doi.org/10.1109/ELMAR.2007.4418801Proceedings Elmar - International Symposium Electronics in Marine, p. 63-67.1334-2630http://hdl.handle.net/11449/7001410.1109/ELMAR.2007.44188012-s2.0-473490893897180879644760038Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProceedings Elmar - International Symposium Electronics in Marine0,187info:eu-repo/semantics/openAccess2021-10-23T21:44:11Zoai:repositorio.unesp.br:11449/70014Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T21:44:11Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Towards forecasting and mitigating ionospheric scintillation effects on GNSS |
title |
Towards forecasting and mitigating ionospheric scintillation effects on GNSS |
spellingShingle |
Towards forecasting and mitigating ionospheric scintillation effects on GNSS Aquino, M. Galileo GNSS GPS Ionosphere Ionospheric scintillation Total Electron Content (TEC) Atmospheric electricity Curve fitting Error analysis Forecasting Global positioning system Ionospheric measurement Least squares approximations Light emission Luminescence Marine applications Mathematical models Navigation Research Satellite navigation aids Stochastic models Amplitude scintillation index Delay-locked loop (DLL) Density irregularities European Galileo (CO) Global navigation satellite systems (GLONASS) GPS receivers High Latitudes In phase (IP) International symposium Ionospheric electron Ionospheric plasmas Ionospheric scintillations Ionospheric storm Least squares (LS) Loss of signal Marine navigation Mobile multimedia Monitor (CO) Navigation and positioning Output error (OE) Paper addresses Relative positioning Safety critical applications Time-varying Total electron content (TEC) Scintillation |
title_short |
Towards forecasting and mitigating ionospheric scintillation effects on GNSS |
title_full |
Towards forecasting and mitigating ionospheric scintillation effects on GNSS |
title_fullStr |
Towards forecasting and mitigating ionospheric scintillation effects on GNSS |
title_full_unstemmed |
Towards forecasting and mitigating ionospheric scintillation effects on GNSS |
title_sort |
Towards forecasting and mitigating ionospheric scintillation effects on GNSS |
author |
Aquino, M. |
author_facet |
Aquino, M. Dodson, A. DeFranceschi, G. Alfonsi, L. Romano, V. Monico, J. F G [UNESP] Marques, H. [UNESP] Mitchell, C. |
author_role |
author |
author2 |
Dodson, A. DeFranceschi, G. Alfonsi, L. Romano, V. Monico, J. F G [UNESP] Marques, H. [UNESP] Mitchell, C. |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
University of Nottingham National Institute for Geophysics and Volcanology (INGV) Universidade Estadual Paulista (Unesp) University of Bath |
dc.contributor.author.fl_str_mv |
Aquino, M. Dodson, A. DeFranceschi, G. Alfonsi, L. Romano, V. Monico, J. F G [UNESP] Marques, H. [UNESP] Mitchell, C. |
dc.subject.por.fl_str_mv |
Galileo GNSS GPS Ionosphere Ionospheric scintillation Total Electron Content (TEC) Atmospheric electricity Curve fitting Error analysis Forecasting Global positioning system Ionospheric measurement Least squares approximations Light emission Luminescence Marine applications Mathematical models Navigation Research Satellite navigation aids Stochastic models Amplitude scintillation index Delay-locked loop (DLL) Density irregularities European Galileo (CO) Global navigation satellite systems (GLONASS) GPS receivers High Latitudes In phase (IP) International symposium Ionospheric electron Ionospheric plasmas Ionospheric scintillations Ionospheric storm Least squares (LS) Loss of signal Marine navigation Mobile multimedia Monitor (CO) Navigation and positioning Output error (OE) Paper addresses Relative positioning Safety critical applications Time-varying Total electron content (TEC) Scintillation |
topic |
Galileo GNSS GPS Ionosphere Ionospheric scintillation Total Electron Content (TEC) Atmospheric electricity Curve fitting Error analysis Forecasting Global positioning system Ionospheric measurement Least squares approximations Light emission Luminescence Marine applications Mathematical models Navigation Research Satellite navigation aids Stochastic models Amplitude scintillation index Delay-locked loop (DLL) Density irregularities European Galileo (CO) Global navigation satellite systems (GLONASS) GPS receivers High Latitudes In phase (IP) International symposium Ionospheric electron Ionospheric plasmas Ionospheric scintillations Ionospheric storm Least squares (LS) Loss of signal Marine navigation Mobile multimedia Monitor (CO) Navigation and positioning Output error (OE) Paper addresses Relative positioning Safety critical applications Time-varying Total electron content (TEC) Scintillation |
description |
The effect of the ionosphere on the signals of Global Navigation Satellite Systems (GNSS), such as the Global Positionig System (GPS) and the proposed European Galileo, is dependent on the ionospheric electron density, given by its Total Electron Content (TEC). Ionospheric time-varying density irregularities may cause scintillations, which are fluctuations in phase and amplitude of the signals. Scintillations occur more often at equatorial and high latitudes. They can degrade navigation and positioning accuracy and may cause loss of signal tracking, disrupting safety-critical applications, such as marine navigation and civil aviation. This paper addresses the results of initial research carried out on two fronts that are relevant to GNSS users if they are to counter ionospheric scintillations, i.e. forecasting and mitigating their effects. On the forecasting front, the dynamics of scintillation occurrence were analysed during the severe ionospheric storm that took place on the evening of 30 October 2003, using data from a network of GPS Ionospheric Scintillation and TEC Monitor (GISTM) receivers set up in Northern Europe. Previous results [1] indicated that GPS scintillations in that region can originate from ionospheric plasma structures from the American sector. In this paper we describe experiments that enabled confirmation of those findings. On the mitigation front we used the variance of the output error of the GPS receiver DLL (Delay Locked Loop) to modify the least squares stochastic model applied by an ordinary receiver to compute position. This error was modelled according to [2], as a function of the S4 amplitude scintillation index measured by the GISTM receivers. An improvement of up to 21% in relative positioning accuracy was achieved with this technnique. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-12-01 2014-05-27T11:22:39Z 2014-05-27T11:22:39Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1109/ELMAR.2007.4418801 Proceedings Elmar - International Symposium Electronics in Marine, p. 63-67. 1334-2630 http://hdl.handle.net/11449/70014 10.1109/ELMAR.2007.4418801 2-s2.0-47349089389 7180879644760038 |
url |
http://dx.doi.org/10.1109/ELMAR.2007.4418801 http://hdl.handle.net/11449/70014 |
identifier_str_mv |
Proceedings Elmar - International Symposium Electronics in Marine, p. 63-67. 1334-2630 10.1109/ELMAR.2007.4418801 2-s2.0-47349089389 7180879644760038 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Proceedings Elmar - International Symposium Electronics in Marine 0,187 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
63-67 |
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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1792962379469815808 |