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DATEM overview 
Digital  Adaptive  Tracking  of  Echo  Movement,  or  DATEM,  is  a  powerful 
algorithm unique to Pulsar’s ultra range of products. Care should always be taken 
when  adjusting  and  analysing  echo  profiles,  if  in  doubt,  please  contact  Pulsar 
technical department. 
 
Fig 1: A typical echo trace. 
 
 
 
Fig 1 (above) is a typical echo profile showing all four traces from the unit, the 
gate is wrapped around the echo with the blue marker indicating the distance. The 
signal strength is good and there are no competing echoes in front of the true 
echo.