Variations in the reflected energy caused by intrusion of {HEAD ~ the area} adjacent {TAIL ~ the coil}, including the areas above or beneath the coil, are processed by detection system signal processing equipment to determine the incidence and location of intrusion events 
adjacent
Variations in the reflected energy caused by intrusion of { HEAD ~ the area } adjacent { TAIL ~ the coil } , including the areas above or beneath the coil , are processed by detection system signal processing equipment to determine the incidence and location of intrusion events
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH