Isolation of ionospheric events in GNSS phase scintillation observations in the Arctic

Sarah S. Beeck, Daniel H. Olesen, Cathryn N. Mitchell

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

In the Arctic, space weather poses a threat to satellite-based navigation by inducing fluctuations in the phase of the radio signal, termed phase scintillation. Therefore, reliable space weather alerts and scintillation models are needed for better warnings and understanding of the impact. For real-time space weather alerts to be valuable, identifying and removing high scintillation values caused by other processes is crucial before issuing space weather alerts. Similarly, for a database of a scintillation model, a distinction between the origin of extreme phase scintillation values could increase the model's integrity. This can be a challenge for the phase scintillation index, σϕ, where other events, such as radio-interference, can result in high phase scintillation values that are not space weather related. In this paper, two methods for evaluating the origin of high σϕ values are examined and their use in combination is discussed. The findings show that for three of the station sites in Greenland, less than one percent of high σϕ values were not space-weather related. For the data collected in Kulusuk 46.85 percent of high σϕ were not space weather and 53.15 % were related to space weather. Therefore, isolating these allows for a significant reduction of misassigned σϕ, which can improve both GNSS-based modelling and alert systems.

Original languageEnglish
Title of host publicationProceedings of the International Technical Meeting of The Institute of Navigation
PublisherInstitute of Navigation
Publication date2025
Pages177-188
ISBN (Electronic)978-093640640-4
DOIs
Publication statusPublished - 2025
EventInternational Technical Meeting of the Institute of Navigation 2025 - Long Beach, United States
Duration: 27 Jan 202530 Jan 2025

Conference

ConferenceInternational Technical Meeting of the Institute of Navigation 2025
Country/TerritoryUnited States
CityLong Beach
Period27/01/202530/01/2025
SeriesInternational Technical Meeting (ITM) Proceedings
ISSN2330-3662

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