geopotential model

The determination of the time-dependent constituents of the inertia tensor was considered. Special attention was given to the computation of temporally varying components of the Earth’s inertia tensor, which are based on the time series of 2nd-degree coefficients through GRACE observations.

The paper is devoted to the modelling of the Earth’s fundamental parameters using recent geodetic  and astronomical data in time. The analysis of modern determinations of fundamental parameters of geodesy, astronomy, and geodynamics have led to the development of new closed expressions and the corresponding approach of their adjustment. The secular variations of basic astrogeodetic parameters were estimated.