By correlating the signals, it is possible to determine {TAIL ~ the actual impedance} of {HEAD ~ the power line} 
By correlating the signals , it is possible to determine { TAIL ~ the actual impedance } of { HEAD ~ the power line }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD