TY - JOUR
T1 - A study on ionospheric irregularities and associated scintillations using multi-constellation GNSS observations
AU - Liu, Zhizhao
AU - Yang, Zhe
AU - Chen, Wu
N1 - Funding Information:
He was the recipient of the inaugural Early Career Award of the Hong Kong Research Grants Council (RGC), Hong Kong, in 2012 and was the recipient of the inaugural Best Conference Paper of the China Satellite Navigation Conference (CSNC), China, in 2013. In 2014, he was nominated by the Hong Kong Observatory for the World Meteorological Organization (WMO) “Norbert Gerbier-MUMM International Award for 2015” for his paper that has developed a method to evaluate the absolute accuracy of water vapor measurements.
Funding Information:
The supports from the National Natural Science Foundation of China (Grant No. 41274039) are gratefully acknowledged. This work is supported by the Hong Kong Research Grants Council (RGC) projects (PolyU 5325/12E,
Publisher Copyright:
© 2017 Proceedings of the Institute of Navigation Pacific Positioning, Navigation and Timing Meeting, Pacific PNT.
PY - 2017
Y1 - 2017
N2 - Ionospheric scintillation as one of the earliest known effects of space weather is a major issue in the Global Navigation Satellite System (GNSS). While being vulnerable to ionospheric scintillations, GNSS signals in return provide valuable information for understanding ionospheric variability and space weather. By taking advantage of multi-constellation GNSS observations from a variety of receivers (i.e., Javad, Leica, Trimble and Septentrio) equipped at zero baseline or a short baseline, the impacts of associated scintillations on GNSS signals and the ionospheric plasma irregularities are investigated in the present study. The 1-sec rate of change of total electron content (TEC) index is utilized to characterize the ionospheric plasma irregularities. It is found that the GLONASS L2 signal is the most vulnerable to ionospheric scintillation effects, and the Beidou B1 and B2 signals are subject to more scintillations than GPS L1, L2 signals, GLONASS L1 signal. Among the signals of each GNSS system, the largest strength of scintillations is observed by the GPS L5 signal, the GLONASS L1 signal and the Beidou B2 signal. In general, the strength of the amplitude scintillation of GNSS signals decreases with the increase frequency. Besides the impact of ionospheric scintillations on multi-GNSS signals, an inconsistent representation in ionospheric plasma irregularities by 1-sec ROTI derived from multi-constellation GNSS measurements is found among the diverse GNSS receivers (i.e. Javad, Leica, Trimble and Septentrio receivers). It is suspected that the various tracking techniques adopted in those receivers may be responsible for the discrepancy. Further study is still needed for seeking the possible reasons. This study contributes to the knowledge of ionospheric irregularities and associated scintillations using multi-constellation GNSS observations.
AB - Ionospheric scintillation as one of the earliest known effects of space weather is a major issue in the Global Navigation Satellite System (GNSS). While being vulnerable to ionospheric scintillations, GNSS signals in return provide valuable information for understanding ionospheric variability and space weather. By taking advantage of multi-constellation GNSS observations from a variety of receivers (i.e., Javad, Leica, Trimble and Septentrio) equipped at zero baseline or a short baseline, the impacts of associated scintillations on GNSS signals and the ionospheric plasma irregularities are investigated in the present study. The 1-sec rate of change of total electron content (TEC) index is utilized to characterize the ionospheric plasma irregularities. It is found that the GLONASS L2 signal is the most vulnerable to ionospheric scintillation effects, and the Beidou B1 and B2 signals are subject to more scintillations than GPS L1, L2 signals, GLONASS L1 signal. Among the signals of each GNSS system, the largest strength of scintillations is observed by the GPS L5 signal, the GLONASS L1 signal and the Beidou B2 signal. In general, the strength of the amplitude scintillation of GNSS signals decreases with the increase frequency. Besides the impact of ionospheric scintillations on multi-GNSS signals, an inconsistent representation in ionospheric plasma irregularities by 1-sec ROTI derived from multi-constellation GNSS measurements is found among the diverse GNSS receivers (i.e. Javad, Leica, Trimble and Septentrio receivers). It is suspected that the various tracking techniques adopted in those receivers may be responsible for the discrepancy. Further study is still needed for seeking the possible reasons. This study contributes to the knowledge of ionospheric irregularities and associated scintillations using multi-constellation GNSS observations.
UR - http://www.scopus.com/inward/record.url?scp=85086848815&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:85086848815
SN - 2331-6284
VL - 2017-May
SP - 851
EP - 865
JO - Proceedings of the Institute of Navigation Pacific Positioning, Navigation and Timing Meeting, Pacific PNT
JF - Proceedings of the Institute of Navigation Pacific Positioning, Navigation and Timing Meeting, Pacific PNT
T2 - Institute of Navigation Pacific Positioning, Navigation and Timing Meeting, PACIFIC PNT 2017
Y2 - 1 May 2017 through 4 May 2017
ER -