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- W2181395536 abstract "Post-sunset disturbances in the equatorial ionosphere routinely cause rapid phase and amplitude fluctuation (i.e. Scintillation) of radio waves propagating through the disturbed regions. The phenomenon of scintillations particularly in the L-band has received considerable attention in recent years because of its detrimental effects on communication and navigational systems like GPS (Global Positioning System). Amplitude scintillations induce signal fading and when the depth of fading exceeds the fade margin of a receiving system, message errors in satellite communication systems are introduced. Scintillation is not a transient phenomenon like the geomagnetic storms but is prevalent mostly during quiet periods of equinoctial months. This paper presents a study of L-band scintillations for the year 2005 from Bhopal (23.2o N, 77.6o E) which is located under the equatorial anomaly crest. A GSV4004A GPS receiver has been operational which provides the total electron content and L-band scintillation. The variations of occurrence of scintillation with time, season and magnetic activity has been discussed with the responses of dual frequency GPS receiver during severe scintillation. The result shows that very intense scintillation can degrade GPS location accuracy by limiting the number of satellites available for position fixes." @default.
- W2181395536 created "2016-06-24" @default.
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- W2181395536 date "2010-01-01" @default.
- W2181395536 modified "2023-09-28" @default.
- W2181395536 title "Study of GPS based ionospheric scintillation and its effects on dual frequency receiver" @default.
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