| 基于小波变换的非平稳信号瞬时频率分析方法 |
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| 引用本文： | 王正林.基于小波变换的非平稳信号瞬时频率分析方法[J].舰船电子对抗,2007,30(5):110-112. |
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| 作者姓名： | 王正林 |
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| 作者单位： | 解放军91404部队,秦皇岛,066001 |
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| 摘 要： | 利用小波变换的优越时频分辨特性,对非平稳信号的瞬时频率进行了分析,给出了模拟仿真结果,并与短时傅立叶变换作比较,得出了两者对信号瞬时频率分析的适用范围及各自的优缺点。
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| 关 键 词： | 小波变换 快速傅立叶变换 瞬时频率 |
| 文章编号： | CN32-1413（2007）05-0110-03 |
| 修稿时间： | 2006-12-11 |
Analysis Method of Instantaneous Frequency of Unsteady signal Based on Wavelet Transform |
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| WANG Zheng-lin.Analysis Method of Instantaneous Frequency of Unsteady signal Based on Wavelet Transform[J].Shipboard Electronic Countermeasure,2007,30(5):110-112. |
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| Authors: | WANG Zheng-lin |
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| Affiliation: | Unit 91404 of PLA,Qinhuangdao 066001,China |
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| Abstract: | This paper analyzes the instantaneous frequency of unsteady signal by means of the superiority time-frequency discrimination characteristic of wavelet transform, gives out the simulation result,and compares it with the result of fast Fourier transform, obtains the application range of the two methods to analyze the instantaneous frequency of signal I; their merits and demerits. |
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| Keywords: | wavelet transform fast Fourier transform instantaneous frequency |
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