低频声信号跨海底界面传播特性  

Propagation Characteristics of Low Frequency Acoustic Signals Across Seabed Interface

作　　者：张振华[1] 史雪辉 晏谢飞 ZHANG Zhenhua;SHI Xuehui;YAN Xiefei(The 28th Research Institute of China Electronics Technology Group Corporation,Nanjing 210007,China;The Second Military Representative Office of Navy Equipment Department in Nanjing,Nanjing 210007,China)

机构地区：[1]中国电子科技集团公司第二十八研究所,南京210007 [2]海军装备部驻南京地区第二军事代表室,南京210007

出　　处：《指挥信息系统与技术》2020年第6期81-86,共6页Command Information System and Technology

基　　金：装备发展部中国电科联合基金资助项目。

摘　　要：潜艇在水下产生的低频声信号具有强穿透性,并以界面波形式传播。为了在近海合理布放海底监听换能器,研究了低频声信号跨海底界面传播特性。基于波数积分法和快速声场程序,建立了半无限弹性海底环境模型;对比了多种环境要素对低频声信号跨海底界面传播的影响并进行了分析。分析结果表明,弹性海底、频率低和海底沉积层薄有利于激发海底界面波的传播。The low frequency acoustic signals generated by the submarines under water have strong penetrability,and propagate in the form of interface waves.To deploy the submarine monitoring transducers in the offshore,the propagation characteristics of low frequency acoustic signals across the seabed interface are studied.Based on the wavenumber integration method and the fast sound field program,a semi-infinite elastic seabed environment model is established.The influences of various environmental factors on the propagation of low frequency acoustic signals across the seabed interface are compared and analyzed.The analysis results show that the elastic seafloor with low frequency and thin seafloor sediment is beneficial to facilitate the propagation of the seabed interface waves.

关 键 词：低频声信号 声透射 快速场算法 弹性海底模型 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]