| 基于Matlab方法水下爆炸声信号的特征提取及其分析 |
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| 引用本文： | 吴成,廖莎莎,李华新,张向荣,张渝霞,史京住. 基于Matlab方法水下爆炸声信号的特征提取及其分析[J]. 北京理工大学学报, 2008, 28(10): 851-855 |
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| 作者姓名： | 吴成 廖莎莎 李华新 张向荣 张渝霞 史京住 |
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| 作者单位： | 北京理工大学,爆炸科学与技术国家重点实验室,北京,100081;国营5013厂,重庆,230056 |
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| 摘 要： | 为了解水下爆炸声信号的特征, 采用Welch法实现对水下爆炸声信号的特征提取,然后利用Mallat算法,采用一维离散小波变换对爆炸信号进行逐级过程提取分析,将信号中的平滑分量和细节分量分离开来. 研究结果表明, 该方法可以更加合理地得到水下爆炸信号的全部特征,从而达到准确分析信号特性的目的.
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| 关 键 词： | 谱估计 离散小波变换 特征提取 |
| 收稿时间： | 2008-05-22 |
Extraction and Analysis of the Features of Underwater Explosion Signal Based on the Matlab Method |
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| WU Cheng,LIAO Sha-sh,LI Hua-xin,ZHANG Xiang-rong,ZHANG Yu-xia and SHI Jing-zhu. Extraction and Analysis of the Features of Underwater Explosion Signal Based on the Matlab Method[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2008, 28(10): 851-855 |
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| Authors: | WU Cheng LIAO Sha-sh LI Hua-xin ZHANG Xiang-rong ZHANG Yu-xia SHI Jing-zhu |
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| Affiliation: | State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;Factory 5013, Chongqing 230056, China;State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | To analyze underwater explosion signal effectively,the Welch spectrum method had been used to extract the signal features,and by the Mallat algorithm,the whole underwater explosion signal have been gradually extracted by means of one dimensional discrete wavelet transformation.The smooth and detailed parts of the signal had been separated so that the whole signal's features could be more reasonably,precisely extracted. |
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| Keywords: | spectrum estimation discrete wavelet transform feature extraction |
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