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Modeling Ionospheric Scintillation and its Effects on GPS Carrier Tracking Loops and Two Other Applications of Modeling and Estimation

Author
Humphreys, Todd
Abstract
Four papers are presented that introduce several applications of
modeling and estimation with emphasis on the Global Positioning
System (GPS). The main thrust of this work, contained in the first
two papers, concerns modeling ionosphere-induced scintillation in
GPS radio waves and modeling the effect of scintillation on GPS
receiver carrier tracking loops. The third paper introduces a novel
magnetometer-based attitude and rate estimation strategy for
application to spacecraft with wire booms. The fourth paper
investigates certain anomalous peaks in the power spectra of
GPS-derived zenith neutral delay measurements and concludes that
these peaks are caused by atmospheric pressure tides.
Date Issued
2007-10-16Subject
GPS; Scintillation; phase tracking loop