Reference system, earth rotation parameters

Information data bases of space geodesy and geodynamics:

Data bases of observation results, gained with the methods of space geodesy and geodynamics with stations of ukrgeokosmomerezha (data bases of the main astronomic observatory of NAS of Ukraine):

  • Radio engineering observations of global navigation satellite system satellites (GNSS): global positioning system observations (GPS-observations).
  • Laser-location observations of Earth special artificial satellites (LLS-observations).

Data bases of observation results, gained with the methods of space geodesy and geodynamics with international station networks (international data bases):

Reference system, earth rotation parameters:

Time reference system: