基于单元辐射叠加法的水下矩形板声场重建  

Sound field reconstruction of an underwater rectangular plate based on the element radiation superposition method

作　　者：高塬 杨博全 郭强 时胜国[1,3,4] GAO Yuan;YANG Boquan;GUO Qiang;SHI Shengguo(College of Underwater Acoustic Engineering,Harbin Engineering University,Harbin 150001,China;Guangdong Institute of In-telligent Unmanned System(Nansha),Guangzhou 511458,China;National Key Laboratory of Underwater Acoustic Technology,Harbin Engineering University,Harbin 150001,China;Key Laboratory of Marine Information Acquisition and Security(Harbin En-gineering University),Ministry of Industry and Information Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学水声工程学院,黑龙江哈尔滨150001 [2]广东智能无人系统研究院(南沙),广东广州511458 [3]哈尔滨工程大学水声技术全国重点实验室,黑龙江哈尔滨150001 [4]海洋信息获取与安全工业和信息化部重点实验室(哈尔滨工程大学),黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2024年第5期922-929,共8页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(61701133)。

摘　　要：为解决等效源法在水下结构声源声场重建中存在的虚拟等效源配置位置难以确定、求逆过程中传递矩阵病态性过大的问题,本文提出了基于单元辐射叠加法的水下结构声源声场重建方法。该方法利用结构声源边界元法建模思想与声场波叠加原理,建立了声源表面振动与辐射声场之间的振声传递关系,得到可快速计算的振声传递函数,并利用该函数作为传递算子进行声场重建。通过对矩形板的声场重建仿真,验证了本文方法相比等效点源近场声全息具有更高的重建精度,且具有更大的有效全息距离。通过在不同阵元数、信噪比情况下的仿真分析,进一步证明了本文方法能够改善水下结构声源的声场重建精度。Due to the problems of the equivalent source method(ESM)in sound field reconstruction of underwater structural sound sources-it is difficult to determine the configuration position of the virtual equivalent source,and the transfer matrix is too ill-conditioned in the process of inversion-a sound field reconstruction method of an un-derwater structure sound source is presented based on the element radiation superposition method(ERSM).Here-in,the vibration and acoustic transfer model is established between the surface vibration of the sound source and the radiation acoustic field,deriving a vibroacoustic transfer function,which can be calculated rapidly.This function is used as a transfer operator for the reconstruction of the acoustic field.Numerical simulations for an underwater rec-tangular plate were performed to demonstrate the advantages of the proposed method.Results validate that ERSM displays higher accuracy of reconstruction and larger valid hologram distance than ESM.Moreover,the simulation results with different numbers of array elements and signal-noise ratios further verify that the proposed method can improve the reconstruction accuracy of the acoustic fields of underwater structures.

关 键 词：单元辐射叠加法 声场重建 结构声源 近场声全息 振声传递函数 求逆问题 矩阵病态性 参数分析 

分 类 号：TB566[交通运输工程—水声工程]