GPS Scintillations and Losses of Signal Lock at High Latitudes During the 2015 St. Patrick's Day Storm
We investigate the Global Positioning System (GPS) amplitude and phase scintillations during a severe geomagnetic storm on 17 March 2015. The auroral oval expanded significantly due to a strongly southward interplanetary magnetic field (Bz was −25 nT). When the auroral oval was over Skibotn in north...
Published in: | Journal of Geophysical Research: Space Physics |
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Language: | English |
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2019
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Online Access: | https://hdl.handle.net/1956/19715 https://doi.org/10.1029/2018ja025933 |
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ftunivbergen:oai:bora.uib.no:1956/19715 2023-05-15T17:43:31+02:00 GPS Scintillations and Losses of Signal Lock at High Latitudes During the 2015 St. Patrick's Day Storm Jin, Yaqi Oksavik, Kjellmar 2019-01-02T14:47:40Z application/pdf https://hdl.handle.net/1956/19715 https://doi.org/10.1029/2018ja025933 eng eng Wiley urn:issn:2169-9402 urn:issn:2169-9380 https://hdl.handle.net/1956/19715 https://doi.org/10.1029/2018ja025933 cristin:1621179 Copyright 2018. American Geophysical Union. All Rights Reserved. Journal of Geophysical Research - Space Physics Peer reviewed Journal article 2019 ftunivbergen https://doi.org/10.1029/2018ja025933 2023-03-14T17:40:27Z We investigate the Global Positioning System (GPS) amplitude and phase scintillations during a severe geomagnetic storm on 17 March 2015. The auroral oval expanded significantly due to a strongly southward interplanetary magnetic field (Bz was −25 nT). When the auroral oval was over Skibotn in northern Norway, significant enhancements in total electron content (TEC) fluctuations, amplitude, and phase scintillation were observed. The strongest amplitude and phase scintillations were observed when a TEC blob propagated across the field of view. Strong amplitude and phase scintillations were observed near the edges of the TEC blob. The European Incoherent SCATter ultrahigh frequency radar observed significant enhancement of electron density (from 0.8 × 1011 to 1.6 × 1011 m−3) near the edge of the TEC blob in the F2 region, while the E region was only slightly enhanced. This indicates that the plasma processes and instability modes, which accounted for the strong GPS scintillations, should involve the F2 region ionosphere. We also analyzed the tracking performance of the GPS receiver during strong ionospheric scintillation condition. While the receiver maintained tracking of the GPS L1 signal, the strong amplitude scintillation resulted in a power fade up to 12 dB‐Hz. Losses of lock occurred in the GPS L2 band. Both the power fade and rapid phase fluctuation should contribute to losses of lock. publishedVersion Article in Journal/Newspaper Northern Norway Skibotn University of Bergen: Bergen Open Research Archive (BORA-UiB) Blob The ENVELOPE(-124.933,-124.933,-73.400,-73.400) Norway Journal of Geophysical Research: Space Physics 123 9 7943 7957 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
We investigate the Global Positioning System (GPS) amplitude and phase scintillations during a severe geomagnetic storm on 17 March 2015. The auroral oval expanded significantly due to a strongly southward interplanetary magnetic field (Bz was −25 nT). When the auroral oval was over Skibotn in northern Norway, significant enhancements in total electron content (TEC) fluctuations, amplitude, and phase scintillation were observed. The strongest amplitude and phase scintillations were observed when a TEC blob propagated across the field of view. Strong amplitude and phase scintillations were observed near the edges of the TEC blob. The European Incoherent SCATter ultrahigh frequency radar observed significant enhancement of electron density (from 0.8 × 1011 to 1.6 × 1011 m−3) near the edge of the TEC blob in the F2 region, while the E region was only slightly enhanced. This indicates that the plasma processes and instability modes, which accounted for the strong GPS scintillations, should involve the F2 region ionosphere. We also analyzed the tracking performance of the GPS receiver during strong ionospheric scintillation condition. While the receiver maintained tracking of the GPS L1 signal, the strong amplitude scintillation resulted in a power fade up to 12 dB‐Hz. Losses of lock occurred in the GPS L2 band. Both the power fade and rapid phase fluctuation should contribute to losses of lock. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Jin, Yaqi Oksavik, Kjellmar |
spellingShingle |
Jin, Yaqi Oksavik, Kjellmar GPS Scintillations and Losses of Signal Lock at High Latitudes During the 2015 St. Patrick's Day Storm |
author_facet |
Jin, Yaqi Oksavik, Kjellmar |
author_sort |
Jin, Yaqi |
title |
GPS Scintillations and Losses of Signal Lock at High Latitudes During the 2015 St. Patrick's Day Storm |
title_short |
GPS Scintillations and Losses of Signal Lock at High Latitudes During the 2015 St. Patrick's Day Storm |
title_full |
GPS Scintillations and Losses of Signal Lock at High Latitudes During the 2015 St. Patrick's Day Storm |
title_fullStr |
GPS Scintillations and Losses of Signal Lock at High Latitudes During the 2015 St. Patrick's Day Storm |
title_full_unstemmed |
GPS Scintillations and Losses of Signal Lock at High Latitudes During the 2015 St. Patrick's Day Storm |
title_sort |
gps scintillations and losses of signal lock at high latitudes during the 2015 st. patrick's day storm |
publisher |
Wiley |
publishDate |
2019 |
url |
https://hdl.handle.net/1956/19715 https://doi.org/10.1029/2018ja025933 |
long_lat |
ENVELOPE(-124.933,-124.933,-73.400,-73.400) |
geographic |
Blob The Norway |
geographic_facet |
Blob The Norway |
genre |
Northern Norway Skibotn |
genre_facet |
Northern Norway Skibotn |
op_source |
Journal of Geophysical Research - Space Physics |
op_relation |
urn:issn:2169-9402 urn:issn:2169-9380 https://hdl.handle.net/1956/19715 https://doi.org/10.1029/2018ja025933 cristin:1621179 |
op_rights |
Copyright 2018. American Geophysical Union. All Rights Reserved. |
op_doi |
https://doi.org/10.1029/2018ja025933 |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
123 |
container_issue |
9 |
container_start_page |
7943 |
op_container_end_page |
7957 |
_version_ |
1766145618590302208 |