| 从时频分布到连续子波变换 |
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| 引用本文： | 张晓平,田立生,彭应宁.从时频分布到连续子波变换[J].电子与信息学报,1994,16(6):631-640. |
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| 作者姓名： | 张晓平 田立生 彭应宁 |
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| 作者单位： | 清华大学电子工程系，清华大学电子工程系，清华大学电子工程系 北京 100084，北京 100084，北京 100084 |
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| 摘 要： | 本文从时频分布的物理概念出发,首先指出了各种时频分析方法的内在联系和差别,然后着重从连续子波变换在信号分析中的物理意义来讨论它的数学表示和特有性质,并和短时傅里叶变换作了比较。接着对连续子波变换在时间尺度平面上的离散化的概念作了扼要描述。最后,基于文中叙述的物理概念,对子波变换的应用和进展作了简要评述。
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| 关 键 词： | 时频分布 短时傅里叶变换 子波变换 |
| 收稿时间： | 1994-1-21 |
| 修稿时间： | 1994-7-1 |
FROM TIME-FREQUENCY DISTRIBUTION TO CONTINUOUS WAVELET TRANSFORM |
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| Zhang Xiaoping,Tian Lisheng,Peng Yingning.FROM TIME-FREQUENCY DISTRIBUTION TO CONTINUOUS WAVELET TRANSFORM[J].Journal of Electronics & Information Technology,1994,16(6):631-640. |
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| Authors: | Zhang Xiaoping Tian Lisheng Peng Yingning |
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| Affiliation: | Department of Electronic Engineering,Tsinghua University, Beijing 100084 |
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| Abstract: | Based on the concept of time-frequency distribution, the relationship and differences among various time-frequency methods are described. Then the mathematical expression of continuous wavelet transform and its significant meaning in signal processing are discussed. Compared with short-time Fourier transform the special characteristics of continuous wavelet transform are shown. The concept of-the discrete case of continuous wavelet transform in time-scale plane is introduced. Finally, some applications and advances of wavelet transforms are reviewed based on concepts proposed in this paper. |
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| Keywords: | Time-frequency distribution Short-time Fourier transform Wavelet transform |
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