Satellite Time and Frequency Transfer and Dissemination
Handbook
This is the first ITU Handbook to provide detailed information on the applied methods, technologies, algorithms, data structure and practical use of frequency and timing signals provided by satellite systems.
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National timing centres
As it has been described previously, UTC is established at the BIPM by a post-processing computation based on the data of about 350 atomic frequency standards maintained in about 60 timing laboratories distributed worldwide.
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