| 胡园,李天星,曹建国,郭龙翔.沉底矢量水听器阵的辐射噪声测量系统[J].,2025,44(1):182-190 |
| 沉底矢量水听器阵的辐射噪声测量系统 |
| Radiation noise measurement system of bottom-mounted vector hydrophone array |
| 投稿时间：2023-09-13 修订日期：2024-12-25 |
| 中文摘要: |
| 矢量水听器可以同步共点测量声场的声压和振速的各正交分量，具有与频率无关的偶极子指向性，有益于小尺度矢量水听器阵获取较高空间增益和测量目标低频段低辐射噪声。本文依据安静型水下航行器低频段辐射噪声测量的需求，进行了矢量阵测量增益的理论分析和仿真计算，并结合小尺寸水下目标低辐射噪声测量实际应用，设计了一种刚性沉底式矢量水听器阵低频辐射噪声测量系统。该系统实现了水下目标辐射噪声数据的同步采集、存储和实时传输。在千岛湖对测量系统进行了性能初步测试，结果表明，湖试环境中，相同孔径下，其指向性和近场聚焦性能优于声压阵，具有更好的空间增益，预计在水下目标低频段辐射噪声测量实际工程应用中有明显优势。 |
| 英文摘要: |
| Vector hydrophones can simultaneously measure the orthogonal components of sound pressure and particle velocity in a sound field. They demonstrate frequency-independent dipole directivity, which is advantageous for small-scale vector hydrophone arrays in achieving higher spatial gain and accurately measuring low-frequency and low-radiation noise from the target. This article addresses the need for measuring low-frequency radiation noise from silent underwater vehicles through theoretical analysis and simulation calculations. It also presents the design of a rigid-bottom-mounted vector hydrophone array system specifically tailored for low-frequency radiation noise measurement, considering the practical application of measuring low-radiation noise from small-sized underwater targets. The system achieved synchronized acquisition, storage, and real-time transmission of underwater target radiation noise data. The performance of the measurement system was preliminarily evaluated in Qiandao Lake, demonstrating superior directivity and near-field focusing capabilities when compared to the sound pressure array with the same aperture. Additionally, it showcased enhanced spatial gain and exhibited apparent advantages for practical engineering applications in measuring low-frequency radiation noise from underwater targets. |
| DOI：10.11684/j.issn.1000-310X.2025.01.019 |
| 中文关键词: 辐射噪声 矢量水听器阵 测量系统 空间增益 |
| 英文关键词: Radiation noise Vector hydrophone array Measurement system Spatial gain |
| 基金项目: |
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