2022年第46卷第10期14水声工程nderwaterAcousticEngineeringU文献引用格式:张敬礼.船舶辐射噪声无失真获取技术[J].电声技术,2022,46(10):14-16.ZHANGJL.Undistortedmeasurementtechniquesforship-radiatednoise[J].AudioEngineering,2022,46(10):14-16.中图分类号:TB532文献标识码:ADOI:10.16311/j.audioe.2022.10.004船舶辐射噪声无失真获取技术张敬礼(大连测控技术研究所,辽宁大连116013)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。关键词:水下辐射噪声;恒定束宽波束形成;规范化流程UndistortedMeasurementTechniquesforShip-RadiatedNoiseZHANGJingli(DalianScientificTestandControlTechnologyInstitute,Dalian116013,China)Abstract:Theunderwaterradiatednoiseofshipshasthecharacteristicsofwidefrequencybandcoverageandlargeamplitudedynamicrange.Inordertoaccuratelyobtainthespectrumcharacteristicsoftheunderwaterradiatednoiseofthemeasuredship,itisnecessarytostudytheunderwateracousticarrayprocessingoftheunderwaterradiatednoiseoftheshipinawidefrequencyband.Thispapermainlystudiestheunderwateracousticarrayprocessingmethodofshipbroadbandunderwaterradiatednoise.Firstly,theprincipleofconstantbeamwidthbeamformingbasedonnestedlineararrayisstudied,andthesimulationmodelisestablished;Secondly,basedontheobtainednestedarraymodel,abroadbandconstantbeamwidthbeamformerunderfar-fieldconditionsisdesigned;Finally,thevalidityoftheproposedmethodisverifiedbydatasimulation.Keywords:radiatednoise;beamform;broadbandarrayprocessing0引言随着现代船舶设计水平提高,建造技术进步,船舶减振降噪技术得到了快速发展,船舶水下辐射噪声水平显著降低。美、俄等世界海军强国纷纷推出低噪声军用/民用船舶[1]。船舶水下辐射噪声的特点是覆盖的频带范围较宽。因此,为了准确、全面地评价船舶水下...