Abstract
Abstract The radio link between a GPS satellite and a GPS receiver is appropriate for bistatic radar sounding of the Earth's atmosphere, ionosphere, and ocean surface (latter in case of GPS reflection). Measurements of GPS phases and amplitudes are currently performed by spaceborne, airborne, mountain- and ground-based GPS receivers. In the present paper, an uniform approach based on geometrical optics and spherical symmetry of the atmosphere is applied to various GPS observation configurations. Atmospheric mapping function, influence and retrieval of ionospheric layers/disturbances, tropospheric water vapor, and possible measurement of vertical winds and wave velocities are investigated by use of simulation data of GPS phase path excess and bending angle.
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