Abstract
Global navigation satellite system (GNSS) Doppler measurements are immune to cycle slips, providing a robust way to detect ionospheric variations. In this study, we explore the feasibility of utilizing GNSS Doppler measurements to detect medium-scale traveling ionospheric disturbance (MSTID). First, the method for MSTID detection based on Doppler measurements is introduced. Subsequently, the theoretical formula on the relationship between MSTID signals extracted from Doppler measurements and those obtained from carrier-phase observations is deduced. To validate the method, data from HKSL GNSS station located in Hong Kong during 2018 and 2023 are utilized. The results show the theoretical formula is valid, and the occurrences of MSTID events detected by Doppler measurements are totally consistent to that of by phase measurements. Furthermore, the characteristics of the MSTID occurrence rate closely resemble those observed in previous studies. These results confirm the feasibility and reliability of using GNSS Doppler measurements for MSTID detection.
| Original language | English |
|---|---|
| Article number | 5802406 |
| Journal | IEEE Transactions on Geoscience and Remote Sensing |
| Volume | 62 |
| DOIs | |
| Publication status | Published - 1 Oct 2024 |
Keywords
- Doppler measurements
- global navigation satellite system (GNSS)
- medium-scale traveling ionospheric disturbance (MSTID)
- rate of total electron content (RTEC)
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- General Earth and Planetary Sciences
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