Paper Info
Title
Ionospheric S4 Scintillations from GNSS Radio Occultation (RO) at Slant Path
Abstract
Ionospheric scintillation can significantly degrade the performance and the usability of space-based communication and navigation signals. Characterization and prediction of ionospheric scintillation can be made from the Global Navigation Satellite System (GNSS) radio occultation (RO) technique using the measurement from a deep slant path where the RO tangent height (h(t)) is far below the ionospheric sources. In this study, the L-band S4 from the RO measurements ath(t)= 30 km is used to infer the amplitude scintillation on the ground. The analysis of global RO data ath(t)= 30 km shows that sporadic-E (Es), equatorial plasma bubbles (EPBs), and equatorial spread-F (ESF) produce most of the significant S4 enhancements, although the polar S4 is generally weak. The enhanced S4 is a strong function of local time and magnetic dip angle. The Es-induced daytime S4 tends to have a negative correlation with the solar cycle at low latitudes but a positive correlation at high latitudes. The nighttime S4 is dominated by a strong semiannual variation at low latitudes.
Year
DOI
Venue
2020
10.3390/rs12152373
REMOTE SENSING
Keywords
DocType
Volume
GPS radio occultation,ionospheric scintillation,electron density,plasma bubbles,polar scintillation,solar cycle
Journal
12
Issue
Citations 
PageRank 
15
0
0.34
References 
Authors
0
1
Name
Order
Citations
PageRank
Dong L. Wu100.34