| 时频分析与小波变换及其应用 |
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| 引用本文： | 孙云莲,刘敦敏.时频分析与小波变换及其应用[J].武汉大学学报(工学版),2003,36(2):103-106. |
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| 作者姓名： | 孙云莲 刘敦敏 |
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| 作者单位： | 武汉大学电气工程学院,湖北,武汉,430072 |
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| 摘 要： | 详细分析了小波变换、短时傅立叶变换和Gabor展开 3种变换形式 ,介绍了它们在工程中的应用 .认为传统的信号分析和处理是在信号的时域或频域上进行的 ,其基础是假设信号或随机过程均为平稳或时不变的信号 ,而时频变换对于非平稳或时变信号的分析和处理有效
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| 关 键 词： | 时频分析 小波变换 短时傅立叶变换 |
| 文章编号： | 1671-8844(2003)02-103-04 |
| 修稿时间： | 2002年8月15日 |
Time-frequency analysis and wavelet transform and their applications |
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| SUN Yun_lian,LIU Dun_min.Time-frequency analysis and wavelet transform and their applications[J].Engineering Journal of Wuhan University,2003,36(2):103-106. |
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| Authors: | SUN Yun_lian LIU Dun_min |
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| Abstract: | The wavelet transform, short_time Fourier transform and Gabor expansion are analyzed in detail; and their applications are introduced. The authors think that traditional methods to analyze and process signal are carried through in time or frequency domain; their basis is the hypothesis that singal or stochastic process is steady. The time_frequency transform is effect on the analysis and processing of unsteady signals. |
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| Keywords: | time_frequency analysis wavelet transform short_time Fourier transform |
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