In order to study influence of sound absorption wedge on acoustic environment of ship sonar platform

experimental research of influence of sound absorption wedge on sound scattering field of sonar platform is carried out

by supposing entry angles of incident waves are 0°

90°

180°

respectively; while the arrangement density of sound absorption wedge is 0 %

100 %

sound pressure distribution of typical part is thus obtained. Study also shows that sound absorption wedge can change pressure distribution of sonar platform

and reduce self-noise level at least 5dB

and over 20dB with special location

however

the effect varies with the hot spot location and the frequency of acoustic wave.