Joint prediction method of bottom reverberation and seamount clutter in deep sea
To address the problem of joint engineering prediction for the active detection of reverberation clutter in-terference in deep-sea complex waters,a joint prediction method for reverberation clutter caused by deep-sea sea-mounts is established based on three-dimensional(3D)ray-normal mode theory.Seamounts are considered a kind of volume scattering source with strong scattering characteristics.A numerical integral method for meshing the vol-ume scattering function of seamounts in horizontal and vertical dimensions is proposed in this paper.In particular,this work examines the characteristics of reverberation and seamount clutter intensity under different horizontal ori-entations and terrain conditions.As such,the unified prediction of the deep sea floor reverberation and seamount clutter of the small fluctuation and seamount clutter is realized.The results show that after the division of the hori-zontal and vertical dimensions,the volume scattering source of the seamount can be effectively coupled with the small-scale scattering of the horizontal seabed.Furthermore,the time scale and envelope intensity of the seamount clutter are affected by the horizontal width and vertical height of the seamount,respectively.The accuracy of the proposed prediction method is then verified by comparing the results with the sea experimental data.
reverberation in deep seaseamountclutterreverberation and clutter modelray theoryactive sonarvolume scatteringreverberation prediction
国家科技期刊平台
NSTL
万方数据
维普
