sonar dome

8.17  sonar dome. Nominally acoustically transparent enclosure used to minimize noise by reduction of turbulence and cavitation arising from motion in the water and separating receive sensor from flow of...

sea noise

8.16  sea noise. Sound in the sea emitted by natural sources such as currents, rain, water waves, wind, and...

noise-limited condition

8.15  noise-limited condition. Condition in which detection is limited by sonar background noise other than...

reverberation-limited condition

8.14  reverberation-limited condition. Condition in which detection by an active sonar is limited by the reverberation part of the sonar background...

relative reverberation level

8.13  relative reverberation level. Difference, on a reference axis of the source, between the sound pressure level due to reverberation and the sound pressure level due to the direct wave. Unit, decibel...

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