船舶辐射噪声无失真获取技术  

Undistorted Measurement Techniques for Ship-Radiated Noise

作　　者：张敬礼 ZHANG Jingli(Dalian Scientific Test and Control Technology Institute,Dalian 116013,China)

机构地区：[1]大连测控技术研究所,辽宁大连116013

出　　处：《电声技术》2022年第10期14-16,共3页Audio Engineering

摘　　要：船舶水下辐射噪声具有频带覆盖范围宽、幅值动态范围大等特点。为了准确地获取被测船舶的水下辐射噪声的频谱特征,需要在较宽的频带上研究船舶水下辐射噪声的水声阵列处理问题。本文主要研究船舶宽频带水下辐射噪声的水声阵列处理方法。首先研究基于嵌套直线阵的恒定束宽波束形成原理,建立仿真模型;其次,在获得的嵌套阵模型基础上,设计远场条件下的宽频带恒定束宽波束形成器;最后通过数据仿真验证文中所提方法的有效性。The underwater radiated noise of ships has the characteristics of wide frequency band coverage and large amplitude dynamic range.In order to accurately obtain the spectrum characteristics of the underwater radiated noise of the measured ship,it is necessary to study the underwater acoustic array processing of the underwater radiated noise of the ship in a wide frequency band.This paper mainly studies the underwater acoustic array processing method of ship broadband underwater radiated noise.Firstly,the principle of constant beamwidth beamforming based on nested linear array is studied,and the simulation model is established;Secondly,based on the obtained nested array model,a broadband constant beamwidth beamformer under far-field conditions is designed;Finally,the validity of the proposed method is verified by data simulation.

关 键 词：水下辐射噪声 恒定束宽波束形成 规范化流程 

分 类 号：TB532[理学—物理]