实测时变深海声速剖面对声线到达结构影响的分析  

Sound diffusion structure based on time-varying sound speed profile of deep ocean

作　　者：李启飞 李智生[1] 张旭[1] 张志伟 范赵鹏 LI Qifei;LI Zhisheng;ZHANG Xu;ZHANG Zhiwei;FAN Zhaopeng(PLA 91550 Unit,Dalian 116000,China;PLA 91001 Unit,Beijing 100000,China)

机构地区：[1]中国人民解放军91550部队,大连116000 [2]中国人民解放军91001部队,北京100000

出　　处：《应用声学》2024年第5期1152-1159,共8页Journal of Applied Acoustics

基　　金：国家自然科学基金资助项目(61971424)。

摘　　要：在对水下目标进行探测时,往往需要先对目标所在海域的声场进行测量,从而极大地提高了探测目标的成本。该文探讨了同一地理位置处,使用公开声速数据和实测声速数据、不同时间段测量的实测声速数据场景下,声线到达结构的差异,从而揭示时变深海声速剖面变化对声波传播的影响,以期优化声学测量作业流程,降低实验成本。计算结果显示,当存在直达声线时,临近几日测量的声速剖面数据可满足声传播距离测量的要求,否则,需要对声速剖面重新测定。In underwater target detection,measuring the sound field in the target area is often necessary,which significantly increases the cost.This study investigates the differences in ray paths due to variations in time-varying deep-sea sound speed profiles using publicly available and measured sound speed data at the same geographic location.The aim is to optimize acoustic measurement procedures and reduce experimental costs.The computational results indicate that when direct ray paths exist,the sound speed profiles measured in the past few days can meet the requirements for sound propagation distance measurement;otherwise,the sound speed profiles need to be re-determined.

关 键 词：声线到达结构 时变声速剖面 声学测量 

分 类 号：O427.1[理学—声学]