methods for determining tropospheric delay

The purpose of this work is to build 3D models of components of zenith tropospheric delay (ZTD) according to the surface measurements of meteorological values obtained at 100 points, which is almost evenly distributed throughout Ukraine. Method. Saastamoinen formulas calculated dry and wet components of the zenith tropospheric delay. According to the obtained results, the fields of dry and wet components of tropospheric delay were compiled, the fields of their change were constructed using a different number of studied points.

The aim of this work is the research of the magnitude of the components change of the zenith tropospheric delay for the territory of Ukraine according to several-day terrestrial meteorological measurements, as well as the construction and study of the field of their change.  Method. The accuracy of the determination of the tropospheric delay and its components depends on the amount of meteorological data that can be used for its caclulation.