– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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CCTF working groups

The CCTF's Working Groups are listed below in alphabetical order of their abbreviation. Some of the Working Groups have restricted-access websites containing their working documents. Where access is restricted to working group members, a username and password are required.


  CCTF Working Group on Time Scale Algorithms (CCTF-WG-ALGO)
  CCTF Working Group on Coordination of the Development of Advanced Time and Frequency Transfer Techniques (CCTF-WGATFT)
  CCL-CCTF Frequency Standards Working Group (CCL-CCTF-WGFS)
  CCTF Working Group on GNSS Time Transfer (CCTF-WGGNSS)
  CCTF Working Group on the CIPM MRA (CCTF-WGMRA)
  CCTF Working Group on Primary and Secondary Frequency Standards (CCTF-WGPSFS)
  CCTF Working Group on Strategic Planning (CCTF-WGSP)
  CCTF Working Group on TAI (CCTF-WGTAI)
  CCTF Working Group on Two-Way Satellite Time and Frequency Transfer (CCTF-WGTWSTFT)