Effect of turbulence on underwater targets recognition

This paper provides an analysis of the echo structures returning from underwater targets, then it describes the effect of turbulence on underwater target recognition. The sonar signal recognition system deals with the echoes received from complex geometrical shapes of underwater targets. Practical measurements were carried out in the Naval Research Center (NRC) in Alexandria that is supported by a standard water tank. When the vibration system in the water tank started, the effect of turbulence on the received echoes that returned from the targets was included.