Comparison and Accuracy Estimation of Modern Models of the Earth’s Gravitational Potential

Abstract

The paper presents a brief overview of new models of the Earth’s gravitational potential constructed based on satellite-to-satellite tracking, satellite gradiometry, satellite altimetry, as well as ground gravimetric and satellite laser ranging. Inherent accuracy estimation of the described models and criteria for comparison of these models with each other have been considered. The obtained results of the comparison and accuracy estimation of the harmonic expansion coefficients depending on the n degree index showed the contribution of each coefficient and its error into the geopotential value and allowed to select an optimal model for solving applied problems of geodesy.

Keywords

• gravitational potential model
• Earth
• comparison
• accuracy estimation