基于矢量声压组合基阵的柱面分布噪声源近场高分辨定位方法  

Near-field and high-resolution cylindrical noise source location method based on vector sound pressure array

作　　者：左翔[1] 陈欢[2] ZUO Xiang;CHEN Huan(Naval Military Representative Office in Jiangnan Shipyard(Group)Co.,Ltd.,Shanghai 201913,China;China Ship Development and Design Center,Wuhan 430064,China)

机构地区：[1]海军驻上海江南造船(集团)有限责任公司军事代表室,上海201913 [2]中国舰船研究设计中心,湖北武汉430064

出　　处：《中国舰船研究》2017年第4期147-150,共4页Chinese Journal of Ship Research

摘　　要：[目的]现有的水下噪声源近场定位方法通常假设测量面为平面,较难应用于柱面分布的水下噪声源目标测试中,同时常规近场聚焦波束形成应用于柱面分布水下噪声源定位时空间分辨率较低,基于声压基阵的水下噪声源近场定位方法则存在左右舷模糊的问题。为解决这一问题,[方法]通过建立测量面为柱面分布的噪声源近场测量模型,结合矢量水听器的单边指向性和MUSIC算法的高分辨率特性,提出基于矢量声压组合基阵的柱面分布噪声源近场高分辨定位方法,并进行计算机仿真验证。[结果]研究结果表明,该方法采用较小的基阵孔径即可实现柱面分布的水下噪声源近场精确定位,[结论]可应用于大型圆柱类复杂系统的噪声源定位识别。The existing underwater noise source near-field location method usually assumes that the measurement plane is flat,which increases the difficulty of applying the underwater noise target test for cylindrical distribution.Simultaneously,the conventional near-field focused beam has a lower spatial resolution when used to locate an underwater noise source with cylindrical distribution.Moreover,the near-field underwater noise source location method based on the sound pressure array has a left and right side fuzzy problem.In order to solve these problems,by establishing the near-field measurement model of the noise source with cylindrical distribution as the measurement surface,and combining the unilateral directivity of the vector hydrophone and the high resolution characteristics of the MUSIC algorithm,a near-field and high resolution location method is proposed for cylindrical distribution based on vector sound pressure,and a computer simulation is carried out.The results show that the method can use a smaller array aperture to locate the underwater noise source,enabling it to be used to locate and recognize the noise sources of complex and large-scale cylindrical systems.

关 键 词：水下噪声源 近场 柱面分布 矢量声压组合基阵 高分辨定位 

分 类 号：TB535[理学—物理] U661.44[理学—声学]