The disclosure relates to the field of time synchronization between two geographically separated clocks, such as the stationary clocks of the phasor measurement units of {TAIL ~ a wide area monitoring system} for {HEAD ~ a power transmission network} 
The disclosure relates to the field of time synchronization between two geographically separated clocks , such as the stationary clocks of the phasor measurement units of { TAIL ~ a wide area monitoring system } for { HEAD ~ a power transmission network }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD