Real-Time Ionospheric Scintillation Monitoring

Wanxuan Fu, Shaowei Han and Chris Rizos, Mark Knight and Anthony Finn

Abstract:	As the millennium approaches we are faced with a period of increasing solar flux and intense ionospheric scintilla-tion. Not only single-frequency, but also dual-frequency GPS measurements will be badly affected by deep scin-tillation, due to its temporal and spatial decorrelation characteristics. Using the scintillation observables derived from dual-frequency phase and signal-to-noise ratio measurements, real-time scintillation detection, tracking and indication algorithms have been developed. By an orthonormal projection of the scintillation observables to the time-frequency spaces of different scales, and using multi-scale statistical hypothesis tesing, a fast and reliable scintillation detection and tracking can be achieved. A fuzzy expression for “scintillation depth” is also devel-oped to overcome the ambiguity existing in the numerical and linguistic definitions of scintillation intensity.
Published in:	Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999) September 14 - 17, 1999 Nashville, TN
Pages:	1461 - 1472
Cite this article:	Fu, Wanxuan, Han, Shaowei, Rizos, Chris, Knight, Mark, Finn, Anthony, "Real-Time Ionospheric Scintillation Monitoring," Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999), Nashville, TN, September 1999, pp. 1461-1472.
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