The resulting doppler video signal is supplied to an analog to digital converter which converts {HEAD ~ this signal} to {TAIL ~ an equivalent doppler digital signal} 
to
The resulting doppler video signal is supplied to an analog to digital converter which converts { HEAD ~ this signal } to { TAIL ~ an equivalent doppler digital signal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL