Preferably, the method uses {TAIL ~ an adaptive filter} to determine {HEAD ~ the location} of the fault 
Preferably , the method uses { TAIL ~ an adaptive filter } to determine { HEAD ~ the location } of the fault
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH