深海海底山引起的混响杂波联合预报方法  

Joint prediction method of bottom reverberation andseamount clutter in deep sea

作　　者：杨华 秦继兴[1,2] 莫东鹏 高博 YANG Hua;QIN Jixing;MO Dongpeng;GAO Bo(State Key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;College of Physical Science,University of Chinese Academy of Sciences,Beijing 100190,China;Unit 92578 of People’s Liberation Army of China,Beijing 100161,China;College of Marine Technology,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国科学院声学研究所声场声信息国家重点实验室,北京100190 [2]中国科学院大学物理学院,北京100190 [3]中国人民解放军92578部队,北京100161 [4]中国海洋大学信息海洋技术学院,山东青岛266100

出　　处：《哈尔滨工程大学学报》2024年第3期466-473,共8页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(12274385);中国科学院青年创新促进会项目(2021023)。

摘　　要：针对深海复杂海域的主动探测混响杂波干扰的联合工程预报问题,本文基于三维射线-简正波理论建立了深海海底山引起的混响杂波联合预报方法,将海底山当作一类具有强散射特征的体积散射源,提出了对海底山的体积散射函数在水平和垂直维度上进行网格划分的数值积分方法。研究了不同水平方位,不同地形条件下的海底混响和海底山杂波强度特征。实现了小起伏水平海底和海底山地形的深海海底混响和海底山杂波的统一预报。研究结果表明:海底山的体积散射源经过水平和垂直维度的划分后,可以和水平海底的小尺度散射过程形成有效耦合,而海底山杂波的时间尺度和包络强度分别受海底山的水平宽度和垂直高度影响。通过海上实验数据比对,验证了本文所提预报方法的准确性。To address the problem of joint engineering prediction for the active detection of reverberation clutter interference in deep-sea complex waters,a joint prediction method for reverberation clutter caused by deep-sea seamounts 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 volume 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 orientations 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 horizontal 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 

分 类 号：O427.2[理学—声学]