Propagation of quasi-periodic random sound pulse sequence signals in shallow-water waveguides

• 来源期刊: 声学学报（英文版）
• 年，卷（期）: 2017,（3）
• 页码范围: 328-336
• 页数: 9页
• 语种: 英文

摘要

It is an efficient method to model ship radiated noise as quasi-periodic random sound pulse sequences.Based on the model,this paper discusses the characteristics change of ship noise after through shallow-water waveguides.Theoretical analysis and numerical simulation show that random waveguides and multi-path effects can bring much additional transmission loss for the noise line spectra,demonstrating the instability of ship radiated noise line spectra to a certain extent,and providing some theoretical support for advanced studies of ship radiated noise.