| 基于声暴露级向量的海洋工程噪声信号自动提取方法 |
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| 引用本文： | 张小康,钟双莲,黄身钦,苏颖,童峰.基于声暴露级向量的海洋工程噪声信号自动提取方法[J].海洋开发与管理,2022,39(2):34-38. |
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| 作者姓名： | 张小康 钟双莲 黄身钦 苏颖 童峰 |
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| 作者单位： | 厦门大学水声通信与海洋信息技术教育部重点实验室 厦门 361005 |
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| 基金项目： | 国家重点研发计划项目（2018YFE0110000）；福建省自然科学基金资助项目（2018J05071）. |
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| 摘 要： | 为从海量的海洋原始噪声数据中快速和准确地提取海洋工程噪声信号,完善大型海洋工程的海洋噪声评估方法,文章提出基于声暴露级向量的海洋工程噪声信号自动提取方法,并进行实验验证。研究结果表明:基于声暴露级向量的信号自动提取方法实现的核心是计算疑似信号与样本信号声暴露级向量(包括声暴露级和有效时间长度)的标准化欧氏距离,结合变步长截取分析、半波包络双阈值触发和中心位置触发等方法,提高信号提取的效率和准确率;与传统的人工提取方法相比,该自动提取方法具有稳健、准确和高效的性能,可替代人工提取方法并广泛应用。
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| 关 键 词： | 信号自动提取 声暴露级向量 双阈值触发 标准化欧氏距离 海洋噪声 |
Automatic Extraction Method of Marine Engineering Noise Signal Based on Sound Exposure Level Vector |
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| ZHANG Xiaokang,ZHONG Shuanglian,HUANG Shenqin,SU Ying,TONG Feng.Automatic Extraction Method of Marine Engineering Noise Signal Based on Sound Exposure Level Vector[J].Ocean Development and Management,2022,39(2):34-38. |
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| Authors: | ZHANG Xiaokang ZHONG Shuanglian HUANG Shenqin SU Ying TONG Feng |
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| Institution: | (Key Laboratory of Underwater Acoustic Communication and Marine Information Technology Ministry of Education,Xiamen University,Xiamen 361005,China) |
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| Abstract: | In order to extract the ocean engineering noise signal quickly and accurately from the massive ocean original noise data, this paper proposed an automatic signal extraction method based on acoustic exposure level vector. The results showed that the core of the method was to calculate the standardized Euclidean distance of the acoustic exposure level vector between the suspected signal and the sample signal. By combining the techniques of variable step size interception analysis, double-threshold trigger based on half-wave envelope and center position trigger, the method could effectively improve the efficiency and accuracy of signal extraction. Compared with the traditional manual extraction method, this automatic extraction method was robust, accurate and efficient, which could replace the manual extraction method and be widely used. |
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| Keywords: | Automatic signal extraction Sound exposure level vector Dual-threshold trigger Standardized Euclidean distance Ocean noise |
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