哈尔滨工程大学学报2024，Vol.45Issue(3)：466-473,8.DOI:10.11990/jheu.202304043
深海海底山引起的混响杂波联合预报方法
Joint prediction method of bottom reverberation and seamount clutter in deep sea
摘要
Abstract
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.关键词
深海混响/海底山/杂波/混响杂波模型/射线理论/主动声呐/体积散射/混响预报Key words
reverberation in deep sea/seamount/clutter/reverberation and clutter model/ray theory/active sonar/volume scattering/reverberation prediction分类
数理科学引用本文复制引用
杨华,秦继兴,莫东鹏,高博..深海海底山引起的混响杂波联合预报方法[J].哈尔滨工程大学学报,2024,45(3):466-473,8.基金项目
国家自然科学基金项目(12274385) （12274385）
中国科学院青年创新促进会项目(2021023). （2021023）
