基于浅海声信道特征测量的舰船水下辐射噪声源级获取方法  

Method for Acquiring Ship Underwater Noise Source Level based on Measurement of Shallow Sea Acoustic Channel Characteristics

作　　者：刘玉财 陈毅[1] 易文胜 LIU Yu-cai;CHEN Yi;YI Wen-sheng(Hangzhou Applied Acoustics Institute,Hangzhou 310023,China)

机构地区：[1]杭州应用声学研究所,浙江杭州310023

出　　处：《宇航计测技术》2021年第1期95-100,共6页Journal of Astronautic Metrology and Measurement

基　　金：国家重点研发计划项目(2016YFF0200900)资助。

摘　　要：针对浅海信道环境下舰船水下辐射噪声测量问题,介绍了一种基于水域声信道传播特征的舰船噪声源级工程测试方法,该方法通过多基元空间能量平均方法来实现。通过探讨以能量平均声压级曲线来表征浅水域水下声传播特征,提出了一个适用于浅水域声传播规律的计算经验公式。对所提测量方法的可行性和准确性进行了仿真分析和湖上试验,结果证明了采用空间能量平均处理方法可以很好的抑制因浅水域声场起伏而带来的高测量误差,对于提高舰船水下辐射噪声测量的准确性具有一定的参考价值。This paper introduces a ship noise source-level engineering test method based on the propagation characteristics of the water acoustic channel to solve the problem of ship underwater radiated noise measurement in the shallow water channel environment.The method is realized by the multi-element space energy averaging.the energy average sound pressure level curve is used to express the characterize of underwater sound propagation in shallow water,and a calculation experience formula suitable for the law of sound propagation in shallow water is proposed.The feasibility and accuracy of the proposed measurement method are verified by simulation and lake experiments.The results prove that the space energy average processing method can suppress the high measurement error caused by the fluctuation of the sound field in shallow water,this method has certain reference value for improving the accuracy of ship radiated noise measurement.

关 键 词：声源级 舰船噪声 浅海 信道 

分 类 号：O427.5[理学—声学]