{TAIL ~ A machine} implemented method of simulating an acoustic received signal arising from {HEAD ~ an acoustic source signal} scattered by a target having a plurality of highlights, the method comprising the unordered steps of: 
{ TAIL ~ A machine } implemented method of simulating an acoustic received signal arising from { HEAD ~ an acoustic source signal } scattered by a target having a plurality of highlights , the method comprising the unordered steps of :
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH