| 一种用于声目标识别的小波变换去噪方法 |
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| 引用本文： | 周忠来,施聚生,栗苹.一种用于声目标识别的小波变换去噪方法[J].军械工程学院学报,1999(3). |
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| 作者姓名： | 周忠来 施聚生 栗苹 |
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| 作者单位： | 军械工程学院弹药技术处理教研室!石家庄，050003(周忠来)，北京理工大学机电工程系!北京，100081(施聚生，栗苹) |
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| 摘 要： | 根据受噪声污染信号的小波变换系数中对信号有贡献的仅占其很小一部分的事实，提出了一种基于系数门限值去噪的方法。对不同信号的仿真结果表明该方法去噪效果明显，运算量小，适合用于对声目标识别系统的噪声去除。这对于改善声目标识别系统的抗噪性能是十分有意义的。
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| 关 键 词： | 声目标识别 小波变换 噪声去除 |
A DE-NOISING METHOD OF WAVELET TRANSFORM FOR ACOUSTIC TARGET IDENTIFICATION |
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| Zhou Zhonglai, Shi Jusheng, Li Ping.A DE-NOISING METHOD OF WAVELET TRANSFORM FOR ACOUSTIC TARGET IDENTIFICATION[J].Journal of Ordnance Engineering College,1999(3). |
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| Authors: | Zhou Zhonglai Shi Jusheng Li Ping |
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| Abstract: | Based on the fact that signal features can be reprasented by just a few wavelet coefficients, a de - noising method using a wavelet coefficient threshold is presented in this paper.The method is simple and can be easily realized by the system of acoustic target identification.The results of simulation demonstrate that de - noising effects of the method are very significant and it is suitable for acoustic target identification. These advantages are important to improve anti - noise performance of acoustic recognition system. |
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| Keywords: | acoustic target identification wavelet transform de-noise |
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