| 奇异信号的谐波小波分析 |
| |
| 引用本文： | 赵玉成,袁树清,许庆余.奇异信号的谐波小波分析[J].工程力学,2000,17(3):60-65. |
| |
| 作者姓名： | 赵玉成 袁树清 许庆余 |
| |
| 作者单位： | 西安交通大学建力学院,西安,710049 |
| |
| 基金项目： | 西安交通大学博士学位论文基金，国家自然科学基金!5987608 |
| |
| 摘 要： | 研究稳定信号的理想工具为Fpurier变换。但对于非平稳信号，需要一种具有良好时频特性的函数基来进行分解，Fourier变换所用的三角函数基不能满足此要求。而近些年提出的小波函数很好地解决了非平稳信号的分解问题。在本文中通过对具有奇异信号的非平稳信号进行谐波小波分析，最后根据分解结果可很好地确定信号中出现奇异的时域和频域位置．
|
| 关 键 词： | 谐波小波 奇异信号 时频域 |
| 文章编号： | ： |
HARMONIC WAVELET ANALYSIS OF SINGULAR SIGNAL |
| |
| ZHAO Yu-cheng,YUAN Shu-qing,XU Qing-yu.HARMONIC WAVELET ANALYSIS OF SINGULAR SIGNAL[J].Engineering Mechanics,2000,17(3):60-65. |
| |
| Authors: | ZHAO Yu-cheng YUAN Shu-qing XU Qing-yu |
| |
| Affiliation: | Department of Engineering Mechanics of XI'an Jiaotong University 710049 |
| |
| Abstract: | Fourier transformation is an ideal analghtial tool to process stable. For the analysis of non-stable signals, base functions with well behaved time frequency charecteristics is required In comparison with the harmonic base functions of FFT, the wavelet function bases are suitable for non-stable signal analysis . In this paper, the harmonic wavelet is used to study local singular non-stable signal. The time-frequency position of singular non-stable signal is determined by means of the decomposition results. |
| |
| Keywords: | harmonic wavelet singular signal time-frequency domain |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
