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An ionospheric scintillation index derived from dual-frequency Doppler measurements released by geodetic GNSS receivers operating at 1 Hz
Abstract Doppler measurements are immune to cycle slips, which offers great potential for constructing the ionospheric scintillation indexes. This study proposes a new scintillation index referred to as Doppler Index ($$DI$$) derived from dual-frequency Doppler measurements released by geodetic receivers operating at 1 Hz. The reliability of $$DI$$ is compared with the dedicated scintillation indexes $${S}_{4}$$ and $${\sigma }_{\varphi }$$ outputted by the ionospheric scintillation monitoring receivers (ISMRs) as well as the indexes $$ROTI$$ and $${S}_{4c}$$ derived from geodetic GNSS receivers. Experimental results suggest that there is strong correlation between $$DI$$ and the common scintillation indexes $${S}_{4}$$, $${\sigma }_{\varphi }$$, and $$ROTI$$. The statistics indicate that the mean values of correlation coefficients between $$DI$$ and $${S}_{4}$$/$${\sigma }_{\varphi }$$ are around 0.6–0.8 based on three ISMR stations data located at low, middle, and high latitudes. Using different types of geodetic GNSS receivers (Septentrio, Javad, Leica, and Trimble) data, the mean values of correlation coefficients between $$DI$$ and $$ROTI$$ can reach around 0.9. In addition, due to the different tracking technologies and locations for the different receiver types, the features of scintillation occurrence thresholds based on $$DI$$ are also analyzed in this study. Statistical results suggest that for the Septentrio, Javad, Leica, and Trimble receivers, the $$\mu +3\sigma $$ can be used as the threshold of $$DI$$ in ionospheric scintillation monitoring.
An ionospheric scintillation index derived from dual-frequency Doppler measurements released by geodetic GNSS receivers operating at 1 Hz
Abstract Doppler measurements are immune to cycle slips, which offers great potential for constructing the ionospheric scintillation indexes. This study proposes a new scintillation index referred to as Doppler Index ($$DI$$) derived from dual-frequency Doppler measurements released by geodetic receivers operating at 1 Hz. The reliability of $$DI$$ is compared with the dedicated scintillation indexes $${S}_{4}$$ and $${\sigma }_{\varphi }$$ outputted by the ionospheric scintillation monitoring receivers (ISMRs) as well as the indexes $$ROTI$$ and $${S}_{4c}$$ derived from geodetic GNSS receivers. Experimental results suggest that there is strong correlation between $$DI$$ and the common scintillation indexes $${S}_{4}$$, $${\sigma }_{\varphi }$$, and $$ROTI$$. The statistics indicate that the mean values of correlation coefficients between $$DI$$ and $${S}_{4}$$/$${\sigma }_{\varphi }$$ are around 0.6–0.8 based on three ISMR stations data located at low, middle, and high latitudes. Using different types of geodetic GNSS receivers (Septentrio, Javad, Leica, and Trimble) data, the mean values of correlation coefficients between $$DI$$ and $$ROTI$$ can reach around 0.9. In addition, due to the different tracking technologies and locations for the different receiver types, the features of scintillation occurrence thresholds based on $$DI$$ are also analyzed in this study. Statistical results suggest that for the Septentrio, Javad, Leica, and Trimble receivers, the $$\mu +3\sigma $$ can be used as the threshold of $$DI$$ in ionospheric scintillation monitoring.
An ionospheric scintillation index derived from dual-frequency Doppler measurements released by geodetic GNSS receivers operating at 1 Hz
Luo, Xiaomin (author) / Xie, Zichun (author) / Monico, João Francisco Galera (author) / Zhang, Baocheng (author) / Pereira, Vinícius Amadeu Stuani (author) / Lou, Yidong (author)
Journal of Geodesy ; 97
2023
Article (Journal)
Electronic Resource
English
A method for scintillation characterization using geodetic receivers operating at 1 Hz
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A method for scintillation characterization using geodetic receivers operating at 1 Hz
| Online Contents | 2017
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