Real-Time Ionospheric Scintillation Monitoring

摘要: As the millennium approaches we are faced with a period of increasing solar flux and intense ionospheric scintillation. Not only single-frequency, but also dualfrequency GPS measurements will be badly affected by deep scintillation, due to its temporal spatial decorrelation characteristics. Using scintillation observables derived from dual-frequency phase signal-to-noise ratio measurements, real-time detection, tracking indication algorithms have been developed. By an orthonormal projection timefrequency spaces different scales, using multiscale statistical hypothesis tesing, fast reliable detection can achieved. A fuzzy expression for “scintillation depth” is developed overcome ambiguity existing in numerical linguistic definitions intensity.