| 小波变换在水下目标回波奇异性检测中的应用 |
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| 引用本文： | 聂双双,邓跃红.小波变换在水下目标回波奇异性检测中的应用[J].海洋技术,2007,26(4):47-50. |
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| 作者姓名： | 聂双双 邓跃红 |
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| 作者单位： | 中南大学机电工程学院,湖南,长沙,410083 |
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| 摘 要： | 小波变换突破了传统Fourier变换等信号处理方法均限制,具有表征信号局部特征的能力,信号的局部奇异性包含了信号的许多重要信息,论文研究了信号的奇异性检测问题。给出小波变换和信号奇异性的关系,实现小波分析对信号各类奇异间断点的有效检测,最后进行实例分析,说明此理论与方法适用于对边缘信号与突变信号的处理和提取,为海底底质识别提供理论依据。
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| 关 键 词： | 小波变换 奇异性检测 Lipschitz指数 回波信号 |
| 文章编号： | 1003-2029（2007）04-0047-04 |
| 收稿时间： | 2007-06-11 |
| 修稿时间： | 2007年6月11日 |
Application of Wavelet Transform in Detection of Signal Singularity of Underwater Target Echo |
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| NIE Shuang-shuang,DENG Yue-hong.Application of Wavelet Transform in Detection of Signal Singularity of Underwater Target Echo[J].Ocean Technology,2007,26(4):47-50. |
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| Authors: | NIE Shuang-shuang DENG Yue-hong |
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| Abstract: | Unlike traditional Fourier transform,the wavelet transform has good localization property.Singular signals often carry a lot of important information.The problem on signal singularity detection is presented.The relation between wavelet transformation and signal singularity is given,and all kinds of singularity discontinuous point are detected by wavelet analysis effectively.An illustration validates this method.The wavelet transform technique is adapted to processing the brim signal and the sudden signal and supplies the theory gist for the bottom sediments classification. |
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| Keywords: | wavelet transform singularity detection Lipschitz exponent echo signal |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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