As documented in this report, the development of suitable methods for synchronizing remotely-located clocks has, in recent years, been the objective of a large number of investigators. The solutions proposed range from com¬paratively simple to quite complex techniques for overcoming the problems involved.nIn order to reach the conclusions of this study, the report first discusses time scale functions, the characteristics of radio propagation, frequency standards, and portable clocks. The characteristics of currently available or proposed time synchronization systems in all major frequency bands are then surveyed - as well as those of line-of-sight and satellite systems. Fundamental considerations of time synchronization are reviewed in detail and the design for an OMEGA timing receiver is fully discussed.
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