A Comparative Study of Triple Frequency GPS Scintillation Signal Amplitude Fading Characteristics at Low Latitudes

Yu Jiao, Yu Morton, Dennis Akos, Todd Walter

Peer Reviewed

Abstract:	Deep signal fading during ionospheric scintillation imposes a major threat to GNSS signal processing and accuracy, availability, and integrity of GNSS PVT solutions. In this paper, triple-frequency GPS data collected in Ascension Island, Brazil, Singapore, and Hong Kong are processed to characterize signal fading across GPS signal bands. Based on tens of thousands of fading events observed on the signal intensity measurements, a variety of fading features under different fading levels are analyzed, which include fading duration, time separation between fades, and fading overlap. The results will provide useful guidance in the development of inter-frequency aiding algorithms in signal reacquisition and tracking in future GNSS receivers. This paper also discusses external interferences affecting data availability in urban sites such as Singapore and Hong Kong, which will influence the future deployment of our data collection systems.
Published in:	Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015) September 14 - 18, 2015 Tampa Convention Center Tampa, Florida
Pages:	3819 - 3825
Cite this article:	Jiao, Yu, Morton, Yu, Akos, Dennis, Walter, Todd, "A Comparative Study of Triple Frequency GPS Scintillation Signal Amplitude Fading Characteristics at Low Latitudes," Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015), Tampa, Florida, September 2015, pp. 3819-3825.
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