I.V. Bezmenov

FSUE “VNIIFTRI”, Mendeleevo, Moscow region
isaev@vniiftri.ru

Al’manac of Modern Metrology № 1 (21) 2020, pages 83–100

In the article have been presented results on development of the algorithm and the program for calculation in ultra-rapid regime of ephemerides and time information (orbits and clocks correc-tions) for GLONASS and GPS satellites performed in the Main Metrological Centre of the State Service of Time and Frequency (MMC SSTF) of Federal State Unitary Enterprise “VNIIFTRI”. The calculations are based on observation data in hourly RINEX-files received from tracking sta-tions of IGS network. Test results are presented. The analysis of the accuracy of the obtained re-sults compared to the final data of other Analysis Centers is given.

Key words: Navigation satellite, Global Navigation Satellite Systems (GNSS), ephemerids and clock corrections, Analysis Centers, hourly RINEX-files.

Full texts of articles are available only in Russian in printed issues of the magazine.