National software for processing information of the satellite – satellite space geodetic system

The paper presents the principle of operation, the main components and the results of the work of the software designed for processing large amounts of space geodetic information created at SAI MSU. The developed PC was used to process inter-satellite measurements of a space constellation intended to measure the parameters of the Earth’s gravitational field (EGF). The experimental option of the software enables working with both simulated data and real data of GRACE and GRACE-FO missions. This experimental version was used to recover the EGF parameters on real GRACE and GRACE-FO mission data. Solutions were developed for every month within the measurement periods of 2010 and 2021, as well as for extended periods of 4.3 years and 7.6 years. A comparison of the obtained solutions with the results of the EGF recovering obtained by other researchers is presented.