Abstract

The atmospheric refraction on occultation paths between GPS satellites and Formosat-3 low-earth-orbit satellites is analyzed. The dependences of the bending angle on the minimum height of the ray path for the European part of Russia are presented. An analytical approximation of the mean vertical profile of the refractive angle for a four-year period is given, and data on slow seasonal and diurnal variations and rapid bending-angle fluctuations observed in the troposphere are presented. It is pointed out that the height profile of the angle of refraction is a good candidate for an indicator of long-term climatic changes in the state of the atmosphere.

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