首页 | 官方网站   微博 | 高级检索  
     

超声多普勒信号的频谱分析
引用本文:汪源源,刘斌,吴晓峰,王威琪.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  吴晓峰  王威琪
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
收稿时间:1997/4/28 0:00:00
修稿时间:1997/8/11 0:00:00

Spectral analysis for Doppler ultrasound signals
WANG Yuanyuan,LIU Bin,WU Xiaofeng and WANG Weiqi.Spectral analysis for Doppler ultrasound signals[J].Technical Acoustics,1998,17(2):57-62.
Authors:WANG Yuanyuan  LIU Bin  WU Xiaofeng and WANG Weiqi
Affiliation:Dept.of Elec. Engn., Fudan University, Shanghai 200433;Dept.of Elec. Engn., Fudan University, Shanghai 200433;Dept.of Elec. Engn., Fudan University, Shanghai 200433;Dept.of Elec. Engn., Fudan University, Shanghai 200433
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  
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《声学技术》浏览原始摘要信息
点击此处可从《声学技术》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号