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