The Mechanism for GNSS‐Based Kinematic Positioning Degradation at High‐Latitudes Under the March 2015 Great Storm
Abstract In this study, we focus on the kinematic precise point positioning (PPP) solutions at high‐latitudes during the March 2015 great geomagnetic storm. We aim to discover the mechanism behind the positioning degradation from the perspective of the impacts of the storm‐induced ionospheric distur...
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| Format: | Article |
| Language: | English |
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Wiley
2022-06-01
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| Series: | Space Weather |
| Online Access: | https://doi.org/10.1029/2022SW003132 |
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| author | Wenfeng Nie Adrià Rovira‐Garcia Mowen Li Zhenlong Fang Yong Wang Dunyong Zheng Tianhe Xu |
| author_facet | Wenfeng Nie Adrià Rovira‐Garcia Mowen Li Zhenlong Fang Yong Wang Dunyong Zheng Tianhe Xu |
| author_sort | Wenfeng Nie |
| collection | DOAJ |
| description | Abstract In this study, we focus on the kinematic precise point positioning (PPP) solutions at high‐latitudes during the March 2015 great geomagnetic storm. We aim to discover the mechanism behind the positioning degradation from the perspective of the impacts of the storm‐induced ionospheric disturbance on the global navigation satellite system (GNSS) data processing. We observed that the phase scintillation dominated the amplitude scintillation at high‐latitudes and the variation pattern of the rate of total electron content index (ROTI) was consistent with that of the phase scintillation during the storm. The kinematic PPP errors at high‐latitudes were almost three times larger than those at the middle‐ and low‐latitude, which were accompanied by large ROTI variations. From the perspective of GNSS data processing, the large positioning errors were also found to be related to the large number of satellites experiencing cycle slips (CSs). Based on the lock time from the ionospheric scintillation monitoring receiver, we found that a large amount of the CSs was falsely detected under the conventional threshold of the CS detector. By increasing such threshold, the kinematic positioning accuracy at high‐latitudes can be improved to obtain similar magnitude as at middle‐ and low‐latitude. The improved positioning accuracy may suggest that the ionospheric disturbance induced by the geomagnetic storm at high‐latitudes has minor effects on triggering the CSs. Therefore, precise positioning can be achieved at high‐latitudes under geomagnetic storms, given that the CS problem is well addressed. |
| format | Article |
| id | doaj-art-46d9e070b4e34f599cc1dddf33ac9ea8 |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2022-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-46d9e070b4e34f599cc1dddf33ac9ea82025-01-14T16:27:09ZengWileySpace Weather1542-73902022-06-01206n/an/a10.1029/2022SW003132The Mechanism for GNSS‐Based Kinematic Positioning Degradation at High‐Latitudes Under the March 2015 Great StormWenfeng Nie0Adrià Rovira‐Garcia1Mowen Li2Zhenlong Fang3Yong Wang4Dunyong Zheng5Tianhe Xu6Institute of Space Sciences Shandong University Weihai ChinaResearch Group of Astronomy and Geomatics (gAGE) Universitat Politecnica de Catalunya (UPC) Barcelona SpainInstitute of Space Sciences Shandong University Weihai ChinaInstitute of Space Sciences Shandong University Weihai ChinaInstitute of Space Sciences Shandong University Weihai ChinaNational‐Local Joint Engineering Laboratory of Geo‐Spatial Information Technology Hunan University of Science and Technology Xiangtan ChinaInstitute of Space Sciences Shandong University Weihai ChinaAbstract In this study, we focus on the kinematic precise point positioning (PPP) solutions at high‐latitudes during the March 2015 great geomagnetic storm. We aim to discover the mechanism behind the positioning degradation from the perspective of the impacts of the storm‐induced ionospheric disturbance on the global navigation satellite system (GNSS) data processing. We observed that the phase scintillation dominated the amplitude scintillation at high‐latitudes and the variation pattern of the rate of total electron content index (ROTI) was consistent with that of the phase scintillation during the storm. The kinematic PPP errors at high‐latitudes were almost three times larger than those at the middle‐ and low‐latitude, which were accompanied by large ROTI variations. From the perspective of GNSS data processing, the large positioning errors were also found to be related to the large number of satellites experiencing cycle slips (CSs). Based on the lock time from the ionospheric scintillation monitoring receiver, we found that a large amount of the CSs was falsely detected under the conventional threshold of the CS detector. By increasing such threshold, the kinematic positioning accuracy at high‐latitudes can be improved to obtain similar magnitude as at middle‐ and low‐latitude. The improved positioning accuracy may suggest that the ionospheric disturbance induced by the geomagnetic storm at high‐latitudes has minor effects on triggering the CSs. Therefore, precise positioning can be achieved at high‐latitudes under geomagnetic storms, given that the CS problem is well addressed.https://doi.org/10.1029/2022SW003132 |
| spellingShingle | Wenfeng Nie Adrià Rovira‐Garcia Mowen Li Zhenlong Fang Yong Wang Dunyong Zheng Tianhe Xu The Mechanism for GNSS‐Based Kinematic Positioning Degradation at High‐Latitudes Under the March 2015 Great Storm Space Weather |
| title | The Mechanism for GNSS‐Based Kinematic Positioning Degradation at High‐Latitudes Under the March 2015 Great Storm |
| title_full | The Mechanism for GNSS‐Based Kinematic Positioning Degradation at High‐Latitudes Under the March 2015 Great Storm |
| title_fullStr | The Mechanism for GNSS‐Based Kinematic Positioning Degradation at High‐Latitudes Under the March 2015 Great Storm |
| title_full_unstemmed | The Mechanism for GNSS‐Based Kinematic Positioning Degradation at High‐Latitudes Under the March 2015 Great Storm |
| title_short | The Mechanism for GNSS‐Based Kinematic Positioning Degradation at High‐Latitudes Under the March 2015 Great Storm |
| title_sort | mechanism for gnss based kinematic positioning degradation at high latitudes under the march 2015 great storm |
| url | https://doi.org/10.1029/2022SW003132 |
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