Parameters of the Earth’s rotation taken into account in high-precision simulation of the GLONASS satellites motion in the interests of civil consumers

Abstract

The purpose of the study was to consider the parameters of the Earth’s rotation in solving the problem of high-precision simulation of the GLONASS navigation spacecraft motion. The paper introduces an algorithm for the operation of a program-algorithm complex for predicting the motion of the GLONASS satellite, taking into account the mathematical models recommended by the International Earth Rotation Service. The study presents the results of estimating the influence of the Earth’s pole motion, uneven rotation of the Earth, precession and nutation on the GLONASS satellite orbit in the form of errors for longitudinal range, vertical and lateral range. The values of the disturbing accelerations and the degree of their influence on the motion of the GLONASS satellite were estimated. The results of deviations of the orbital parameters are obtained: semi-major axis, eccentricity, inclination, longitude of the ascending node, the argument of the pericenter and the focal parameter at an interval of 30 days under the influence of the parameters of the Earth’s orientation.