摘要:As the Russian Federation continues to implement its GLONASS modernization program, which will include newly designed spacecraft and signals, the Russian Federal Space Agency is evaluating methods for improving the system’s performance based on the current generation of GLONASS-M satellites. This effort includes assessing the performance of the network of ground reference stations and options for its improvement as well as using the current GLONASS FDMA signals to precisely determine the orbits of a remote sensing satellite