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An EISCAT UHF/ESR Experiment That Explains How Ionospheric Irregularities Induce GPS Phase Fluctuations at Auroral and Polar Latitudes

John, Habila and Forte, Biagio and Astin, Ivan and Allbrook, T. and Arnold, A. and Vani, Bruno and Häggström, Ingemar and Sato, Hiroatsu (2021) An EISCAT UHF/ESR Experiment That Explains How Ionospheric Irregularities Induce GPS Phase Fluctuations at Auroral and Polar Latitudes. Radio Science. Wiley. doi: 10.1029/2020RS007236. ISSN 0048-6604.

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Official URL: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020RS007236


A limitation to the use of Global Navigation Satellite System (GNSS) for precise and real-time services is introduced by irregularities in the ionospheric plasma density. An EISCAT UHF/ESR experiment was conducted to characterize the effect of electron density irregularities on temporal fluctuations in TEC along directions transverse to GPS ray paths in the high latitudes ionosphere. Two representative case studies are described: Enhancements in temporal TEC fluctuations originating (a) in the auroral ionosphere following auroral particle precipitation and (b) in the polar ionosphere following the drift of a polar patch as well as particle precipitation. The results indicate that the origin of enhancements in TEC fluctuations is due to the propagation through large-to-medium scale irregularities (i.e., ranging from few kilometres in the E region to few tens of kilometres in the F region) and occurring over spatial distances of up to approximately 400 km in the E region and up to approximately 800 km in the F region with a patchy distribution. Furthermore, the results indicate that enhancements in TEC fluctuations produced by polar plasma patches and particle precipitation occur over similar temporal scales, thus explaining the overall observation of higher phase scintillation indices in the high-latitude ionosphere. The similarity in the temporal scales over which enhancements in TEC fluctuations occur in the presence of both particle precipitation and plasma patches suggests an intrinsic limitation in the monitoring and tracking of plasma patches through ground GNSS observations.

Item URL in elib:https://elib.dlr.de/143901/
Document Type:Article
Title:An EISCAT UHF/ESR Experiment That Explains How Ionospheric Irregularities Induce GPS Phase Fluctuations at Auroral and Polar Latitudes
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
John, HabilaUniv. of Bathhttps://orcid.org/0000-0003-2877-8511
Forte, BiagioUniv. of Bathhttps://orcid.org/0000-0003-1682-1930
Astin, IvanUniv. of Bathhttps://orcid.org/0000-0001-8964-6286
Allbrook, T.Independent Scholar, Rochester, UKUNSPECIFIED
Arnold, A.Independent Scholar, Bristol, UKUNSPECIFIED
Vani, BrunoFederal Institute of Education, Science and Technology of São Paulohttps://orcid.org/0000-0002-4022-9227
Häggström, IngemarEISCAT Scientific Association, Swedenhttps://orcid.org/0000-0003-1070-6915
Sato, HiroatsuUNSPECIFIEDhttps://orcid.org/0000-0002-5886-2768
Date:August 2021
Journal or Publication Title:Radio Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:EISCAT, GNSS, Ionospheric Irregularities
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Solar-Terrestrial Physics SO
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics
Deposited By: Sato, Hiroatsu
Deposited On:18 Oct 2021 08:17
Last Modified:15 Nov 2021 11:44

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