Abstract:The distribution and number of monitoring stations directly affect the orbit determination accuracy, parameter calculation and status monitoring of navigation satellites. A method for evaluating the coverage of monitoring stations is provided, and real Global Navigation Satellite Systems (GNSS) orbit data is used and Low Earth Orbit (LEO) constellations are simulated to conduct simulation experiments on enhancing the coverage range and depth, tracking average, and visible arc proportion of monitoring stations in different numbers of areas. The conclusion drawn is that increasing the number of regional monitoring stations only improves the coverage of GNSS satellites to a certain extent, but cannot effectively improve LEO satellites. Therefore, global station deployment or further analysis based on satellite receiver data is needed