Abstract
The curvature of the trajectories of propagation of optical rays in the atmosphere (refraction) is one of the basic effects which causes systematic errors in the height determination by leveling and moreover which is very difficult to take into account. In spite of quite intensive investigations during many years, it remained a problem that could not obtain practical solution. Using the methodological principles of the theory of similarity and modeling, the author succeeded in obtaining a basically new solution of the task. This solution enabled the development of a technological method to determine refraction in high precision and trigonometric leveling. The application of the method needs negligible surplus measurements.
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