An ionospheric scintillation index derived from dual-frequency Doppler measurements released by geodetic GNSS receivers operating at 1 Hz

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 opera...

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Bibliographic Details
Published in:Journal of geodesy 2023-07, Vol.97 (7), Article 70
Main Authors: Luo, Xiaomin, Xie, Zichun, Monico, João Francisco Galera, Zhang, Baocheng, Pereira, Vinícius Amadeu Stuani, Lou, Yidong
Format: Article
Language:English
Subjects:
Coefficients
Correlation coefficient
Doppler sonar
Earth and Environmental Science
Earth Sciences
Geodetics
Geophysics/Geodesy
Original Article
Scintillation
Statistical methods
Tracking
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Summary: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 σ φ outputted by the ionospheric scintillation monitoring receivers (ISMRs) as well as the indexes ROTI and S 4 c derived from geodetic GNSS receivers. Experimental results suggest that there is strong correlation between DI and the common scintillation indexes S 4 , σ φ , and ROTI . The statistics indicate that the mean values of correlation coefficients between DI and S 4 / σ φ 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 μ + 3 σ can be used as the threshold of DI in ionospheric scintillation monitoring.
ISSN:0949-7714
1432-1394
DOI:10.1007/s00190-023-01760-y