Abstract
The compatibility assessment of the terrestrial reference frames orbital realizations broadcasted by the global navigation satellite systems (GPS, GLONASS, Galileo and BeiDou) with the International terrestrial reference frame ITRF during 2020–2023 was performed. The assessment is based on the analysis of daily Helmert transformation parameters determined in the Information and Analysis Center for Positioning, Navigation and Timing of the Central Research Institute for Machine Building within calculating a posteriori ephemeris and time information for each constellation. Based on the daily Helmert transformation parameters, annual reference frames coincidence parameters RSS7 and Λ and their standard deviations StDRSS7 and StDΛ on the monthly, 10-day and daily averaging intervals were computed, characterizing the stability of terrestrial reference frames orbital realizations. The obtained results show the following level of coincidence between the terrestrial reference frames broadcasted by global navigation satellite systems and ITRF
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