Reference system, earth rotation parameters

Information data bases of space geodesy and geodynamics:

• International earth rotation and reference system service, IERS.
• Ukrainian centre of earth rotation parameters defining.

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):

• Radio engineering observations of global navigation satellite system satellites (GNSS):
  • global positioning system observations (GPS-observations);
  • global navigation satellite system observations(GLONASS-observations);
• Laser-location observations of Earth special artificial satellites (LLS-observations).
• Extragalactic radiation sources observations using the method of very-long-base-line radiointerferometry (VDBLR-observations).

Reference system, earth rotation parameters:

• International celestial reference frame.
• International terrestrial reference frame.
• Earth rotation parameters (according to International earth rotation and reference system service).

Time reference system:

• International Bureau of Weights and Measures.
• NTP-service of time of the main astronomic observatory NAS of Ukraine.