Time Transfer Scheme in Power Line based on Narrow Electric Pulse

SummaryWe demonstrated a time transfer scheme in power line based on narrow electric pulse. With this scheme, we have transmitted a narrow pulse of 100 ns across a 50-meter power line. The preliminary experimental result shows that the time deviation of the transmission link is 20.9 ps at 0.1-ms averaging time and down to 1.2 ps at ~1s averaging time. The deviation of the time difference and the quality of transmission implies the technique shown in this paper has potential to be directly used in the high-precision time synchronization across power line in a medium and short distance transmission.