Mitigation of ionospheric effects on GNSS positioning at low latitudes
Ionospheric conditions at low latitudes are extremely harsh due to the frequent occurrence of scintillation and the presence of strong TEC gradients. For this study, the São Paulo state region in Brazil is chosen as a test area. This study presents a strategy to mitigate the ionospheric impact on RT...
| Main Authors: | , , , , |
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| Format: | Article |
| Published: |
Wiley
2017
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| Online Access: | https://eprints.nottingham.ac.uk/44978/ |
| _version_ | 1848797042330042368 |
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| author | Park, J. Vadakke Veettil, Sreeja Aquino, Marcio Yang, Lei Cesaroni, Claudio |
| author_facet | Park, J. Vadakke Veettil, Sreeja Aquino, Marcio Yang, Lei Cesaroni, Claudio |
| author_sort | Park, J. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Ionospheric conditions at low latitudes are extremely harsh due to the frequent occurrence of scintillation and the presence of strong TEC gradients. For this study, the São Paulo state region in Brazil is chosen as a test area. This study presents a strategy to mitigate the ionospheric impact on RTK positioning with an experimental result. The proposed strategy explores two approaches that can be applied simultaneously: a) to mitigate the scintillation effect on the GNSS signals by refining the stochastic model of the corresponding observations and b) to precisely estimate the residual double difference ionospheric delay by exploiting an accurate TEC map.
The strategy was tested on a long baseline kinematic processing under strong scintillation conditions (DOY21 in 2014). Significant improvements were observed when the combined use of the two mitigation approaches described above was compared with the use of conventional state-of-the-art approaches. |
| first_indexed | 2025-11-14T19:57:35Z |
| format | Article |
| id | nottingham-44978 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:57:35Z |
| publishDate | 2017 |
| publisher | Wiley |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-449782020-05-04T18:45:10Z https://eprints.nottingham.ac.uk/44978/ Mitigation of ionospheric effects on GNSS positioning at low latitudes Park, J. Vadakke Veettil, Sreeja Aquino, Marcio Yang, Lei Cesaroni, Claudio Ionospheric conditions at low latitudes are extremely harsh due to the frequent occurrence of scintillation and the presence of strong TEC gradients. For this study, the São Paulo state region in Brazil is chosen as a test area. This study presents a strategy to mitigate the ionospheric impact on RTK positioning with an experimental result. The proposed strategy explores two approaches that can be applied simultaneously: a) to mitigate the scintillation effect on the GNSS signals by refining the stochastic model of the corresponding observations and b) to precisely estimate the residual double difference ionospheric delay by exploiting an accurate TEC map. The strategy was tested on a long baseline kinematic processing under strong scintillation conditions (DOY21 in 2014). Significant improvements were observed when the combined use of the two mitigation approaches described above was compared with the use of conventional state-of-the-art approaches. Wiley 2017-05-07 Article PeerReviewed Park, J., Vadakke Veettil, Sreeja, Aquino, Marcio, Yang, Lei and Cesaroni, Claudio (2017) Mitigation of ionospheric effects on GNSS positioning at low latitudes. Navigation, 64 (1). pp. 67-74. ISSN 2161-4296 http://onlinelibrary.wiley.com/doi/10.1002/navi.177/abstract doi:10.1002/navi.177 doi:10.1002/navi.177 |
| spellingShingle | Park, J. Vadakke Veettil, Sreeja Aquino, Marcio Yang, Lei Cesaroni, Claudio Mitigation of ionospheric effects on GNSS positioning at low latitudes |
| title | Mitigation of ionospheric effects on GNSS positioning at low latitudes |
| title_full | Mitigation of ionospheric effects on GNSS positioning at low latitudes |
| title_fullStr | Mitigation of ionospheric effects on GNSS positioning at low latitudes |
| title_full_unstemmed | Mitigation of ionospheric effects on GNSS positioning at low latitudes |
| title_short | Mitigation of ionospheric effects on GNSS positioning at low latitudes |
| title_sort | mitigation of ionospheric effects on gnss positioning at low latitudes |
| url | https://eprints.nottingham.ac.uk/44978/ https://eprints.nottingham.ac.uk/44978/ https://eprints.nottingham.ac.uk/44978/ |