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四种时频分析方法的频率分辨率研究
  • 期刊名称：杨哂哂, 李明, 顾学康，四种时频分析方法的频率分辨率研究, 《现代电子技术》, 31(11), 3
  • 时间：0
  • 分类：TN911.72[电子电信—通信与信息系统;电子电信—信息与通信工程]
  • 作者机构：[1]华东师范大学信息科学技术学院,上海200241, [2]中国船舶科学研究中心,江苏无锡214082
  • 相关基金：国家自然科学基金（60573125）;上海重点学科建设项目（B411）
  • 相关项目：长相关网络流量在希尔伯特空间中的最优建模
关键词： 短时傅里叶变换, 小波变换, Choi—Williams分布, Hilbert—Huang变换, 时频分析, 频率分辨率, short-time Fourier transform, wavelet transform, Choi-William distribution, Hilbert-Huang transform, time-frequency analysis, frequency resolution
中文摘要：

时频分析是分析时变谱的有力工具,其频率分辨率是值得研究的关键问题之一。通过对基于短时傅里叶变换、小波变换、Choi-Williams分布和Hilbert-Huang变换的四种时频分析方法的频率分辨率的实验比较，说明Hilbert-Huang变换法具有最高的频率分辨率，其次是Choi-Williams分布，小波紧随其后，最差是短时傅里叶变换。

英文摘要：

Time-Frequency （TF） is a powerful tool for the analysis of time-varying spectrum.One of key issues in this regard is frequency resolution.Experimentally compared the frequency resolution of four types of TF analysis methods,namely,Short Time Fourier Transform （STFT）,Wavelet Transform （WT）,Choi-William Distribution （CWD） and Hilbert-Huang Transform （HHT）.The results suggest that HHT has the highest frequency resolution,CWD is better than WT and STFT is the worst.

同期刊论文项目
长相关网络流量在希尔伯特空间中的最优建模
期刊论文 77 会议论文 31 著作 7
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