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超声多普勒信号的频谱分析
引用本文:汪源源,刘斌.超声多普勒信号的频谱分析[J].声学技术,1998,17(2):57-62.
作者姓名:汪源源  刘斌
作者单位:复旦大学电子工程系
摘    要:超声多普勒信号具有非平稳性,利用传统的短时傅里叶变换分析该信号不能同时得到较高的时间频率精度,为克服这一缺点,本文简要介绍了多普勒信号频谱分析的几种新方法,并将它们和传统的方法进行性能的比较。

关 键 词:频谱分析  超声多普勒信号  血管疾病  无损诊断

Spectral analysis for Doppler ultrasound signals
WANG Yuanyuan,LIU Bin,WU Xiaofeng,WANG Weiqi.Spectral analysis for Doppler ultrasound signals[J].Technical Acoustics,1998,17(2):57-62.
Authors:WANG Yuanyuan  LIU Bin  WU Xiaofeng  WANG Weiqi
Abstract:Doppler ultrasound signals are nonstationary. Analysis of these signals using the conventional short time Fourier transform could not lead to higher resolution both in time and frequency domain simultaneously. To overcome this shortcoming, several new spectral analysis methods are briefly described in this paper. Their performances are also compared with that of conventional method.
Keywords:ultrasound  Doppler  spectral analysis  
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