Estimating the Phase Signature of the Earth’s Ionosphere Using Gps Carrier Phase Measurement
نویسندگان
چکیده
Interferometric Synthetic Aperture Radar (InSAR) and the Global Positioning System (GPS) are commonly used to obtain surface topography and surface motions for the study of crustal deformation. Because both of these systems operate from satellites high above the Earth’s surface, the arrival time of the propagating signals is delayed as the signals travel through the Earth’s ionosphere. As a result, it is necessary to consider the total electron content (TEC) of the ionosphere, and predict the corresponding ionospheric delay in interferograms or GPS data, to properly interpret the measurements.
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