The measurement of the depth of a body of water or the distance to an object in a body of water by measuring the time it takes sound or electromagnetic waves of known velocity to reflect from the bottom of the water body or from the distant object . Note: In echo sounding , damped cw transmission is usually used.
ECHO SOUNDING
Meaning of ECHO SOUNDING in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012