STUDY OF THE ACCURACY OF DETERMINING THE ORBITS OF GLONASS SPACECRAFT UNDER VARIOUS CIRCUMSTANCES OF GROUND-BASED OBSERVATIONS

The paper examines the influence of ground-based observation conditions on the accuracy of determining the orbits of GLONASS navigation spacecraft. An indicator of parametric accuracy is introduced. Based on the results of the study, it is shown under what observation conditions, including the optimal placement of ground-based tracking stations, the density of observations, and the measurement interval, the best accuracy of determining the location of spacecraft can be achieved.