水下运载器声学性能预估

傅晓晗; 付学志; 王敏庆

doi:10.11993/j.issn.2096-3920.2022-0094

水下运载器声学性能预估

doi: 10.11993/j.issn.2096-3920.2022-0094

1.
西北工业大学航海学院, 陕西西安, 710072
2.
中国人民解放军92228部队, 北京, 100072

基金项目: 陕西省自然科学基金资助项目(2021JLM-39)

详细信息

作者简介:
傅晓晗(1995-), 女, 在读博士，主要研究方向为噪声与振动控制

通讯作者:
王敏庆(1970-), 男, 博士, 教授, 主要研究领域为声信息处理与控制

中图分类号: TJ630.34; U674.76
计量
- 文章访问数: 144
- HTML全文浏览量: 24
- PDF下载量: 55
- 被引次数: 0
出版历程
- 收稿日期: 2022-12-09
- 修回日期: 2022-12-18
- 录用日期: 2023-04-07
- 网络出版日期: 2023-11-17

Acoustic Performance Prediction of Undersea Vehicles

1.
School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China
2.
Unit 92228^th, the People’s Liberation Army of China, Beijing 100072, China

摘要

摘要: 随着深海捕捞和海洋牧场的发展, 运载器水下辐射噪声对鱼类等海洋生物的影响不可忽视。为评估水下运载器的辐射噪声对海洋生物的影响, 根据被动声呐方程和水下辐射噪声传播损失特性建立了运载器的安全工作半径计算模型, 量化了水下运载器的安全工作区域。以商用水下运载器G1和对动力系统进行了声学优化设计的G2为研究对象, 在声学性能试验的基础上分析了2种运载器的声辐射特性, 进一步分别计算、对比了2种运载器与海洋鱼类和水下设备之间的安全工作半径。研究表明, 运载器的辐射噪声由宽频噪声和线谱噪声组成, 低频线谱噪声是影响运载器声学性能的主要因素, 优化动力系统有效改进了运载器的安全工作半径, 降低了其对海洋生物的影响。文中工作可为海洋声学牧场的商用运载器声学性能评估及优化提供参考。
- 水下运载器 /
- 水下辐射噪声 /
- 安全工作半径 /
- 海洋声学牧场
Abstract: With the development of deep-sea fishing and marine ranching, the impact of undersea radiation noise of vehicles on marine organisms such as fish cannot be ignored . In order to assess the impact of radiation noise from undersea vehicles on marine life, the calculation model of safe working radius for an undersea vehicle was established according to the passive sonar equation and propagation loss characteristics of undersea radiation noise, and the safe working area of undersea vehicles was quantified. Two kinds of commercial undersea vehicles G1 and G2 with acoustic optimization design for the power system were studied. Based on the acoustic performance test, the acoustic radiation characteristics of the two vehicles were analyzed, and the safe working radius between the two undersea vehicles and marine fish as well as undersea equipment were further calculated. The research shows that the radiated noise of the vehicles consists of broadband noise and line spectrum noise, and the line spectrum noise within the low-frequency range is the main factor affecting the acoustic performance of undersea vehicles. The safe working radius of the undersea vehicles is effectively improved by optimizing the power system, thus reducing its impact on marine life. The results of this study provide a reference for the evaluation and optimization of the acoustic performance of commercial vehicles in marine acoustic ranch.
- undersea vehicle /
- undersea radiation noise /
- safe working radius /
- marine acoustic ranching

HTML全文

图 1 声波吸收系数随频率变化曲线

Figure 1. Curve of acoustic absorption coefficient versus frequencies

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图 2 运载器辐射噪声指向性分析场点示意图

Figure 2. Field points for directional analysis of radiated noise of vehicle

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图 3 运载器垂直方向辐射噪声指向性

Figure 3. Directionality of radiation noise in vertical direction of avehicle

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图 4 运载器水平方向辐射噪声指向性

Figure 4. Directionality of radiation noise in horizontal direction of avehicle

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图 5 水下辐射噪声测试方案示意图

Figure 5. Undersea radiation noise test scheme

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图 6 测试系统示意图

Figure 6. Test system

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图 7 2种商用运载器噪声频谱

Figure 7. Noise spectrum of two commercial vehicles

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图 8 接收机性能曲线

Figure 8. Performance curves of a receiver

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图 9 2种水下运载器安全工作半径对比

Figure 9. Comparison of safe working radius of two vehicles

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表 1 G1线谱噪声SNR

Table 1. Signal-to-noise ratio of line spectrum noise of vehicle G1

频点	SNR/dB	频点	SNR/dB
${f_{{\text{1 - 1}}}}$	37.9	${f_{{\text{1 - 4}}}}$	60.2
${f_{{\text{1 - 2}}}}$	52.9	${f_{{\text{1 - 5}}}}$	68.6
${f_{{\text{1 - 3}}}}$	60.1	${f_{{\text{1 - 6}}}}$	64.3

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表 2 G2线谱噪声SNR

Table 2. Signal-to-noise ratio of line spectrum noise of vehicle G2

频点	SNR/dB	频点	SNR/dB
${f_{2{\text{ - 1}}}}$	28.9	${f_{2{\text{ - 5}}}}$	51.7
${f_{2{\text{ - 2}}}}$	30.8	${f_{2{\text{ - 6}}}}$	58.4
${f_{2{\text{ - 3}}}}$	49.4	$ {f_{2{\text{ - }}7}} $	85.3
${f_{2{\text{ - 4}}}}$	55.2

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