b) a reflected energy pulse from {HEAD ~ said target} over {TAIL ~ the open gated range} as an integrated first gate image 
over
b ) a reflected energy pulse from { HEAD ~ said target } over { TAIL ~ the open gated range } as an integrated first gate image
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH