Patent ID: 7031417

Claim:
A method of synchronizing a plurality of clocks at different locations using a third clock (clock B) comprising the steps of: determining a correction term, ε A for a first one of the plurality of clocks (clock A) the correction term being the difference between the computed arrival time of a signal from clock B to clock A if clock A was synchronized to clock B, defined as s 1 A , minus the observed time by clock A of arrival of the signal from clock B at clock A; determining a correction term, ε C for any selected one or ones of the plurality of clocks (clocks C) to be synchronized, the correction term being the difference between the computed arrival time of a signal from clock B to clock C if clock C was synchronized to clock B, defined as s 2 A minus the observed time by clock C of arrival of the signal from clock B at clock C; applying the difference between the correction terms, ε A and ε C , defining a correction term, ε CA for clock C, to synchronize the selected one or ones of the plurality of clocks C for which ε C has been determined, to clock A.