Time Synchronization of Primary Geodetic Sites Through Use of Artificial Satellites

摘要

Geodetic measuring techniques, especially those making use of the artificial satellite, have advanced to the point where timing requirements once fulfilled by such systems as WWV no longer can provide the accuracies currently required. Geodetic field teams, dispersed on a worldwide basis, have in their inventory time standards ranging from crystal oscillators to cesium beam standards. Each must be synchronized to some basic standard. The advent of the synchronous communications satellite has provided the geodetic community and others with a real time, economical and highly precise means of synchronizing these same time standards. One such technique utilizing these communications satellites as a link in the synchronization process is reviewed. (Author)