文章摘要
张羽,汪源源,王威琪,余建国.超声多普勒信号平均频率估计方法的比较研究[J].声学技术,2000,(3):127~130
超声多普勒信号平均频率估计方法的比较研究
The comparison research of mean frequency estimation methods for Doppler ultrasound signals
投稿时间:1999-12-06  修订日期:2000-01-28
DOI:
中文关键词: 超声多普勒  平均频率  瞬时频率
英文关键词: Doppler ultrasound  mean frequency  instantaneous frequency
基金项目:教育部优秀年轻教师基金;上海青年科技启明星计划资助项目
作者单位
张羽 复旦大学电子工程系, 上海 200433 
汪源源 复旦大学电子工程系, 上海 200433 
王威琪 复旦大学电子工程系, 上海 200433 
余建国 复旦大学电子工程系, 上海 200433 
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中文摘要:
      本文介绍了一些常用的超声多普勒信号平均频率估计法,并引入一种新的估计法:基于Teager算法的平均频率估计,然后分别对计算机模拟的多普勒信号和流速校刻系统的多普勒信号进行平均频率的估计和比较,给出了不同估计方法的优缺点和适用范围。
英文摘要:
      Several mean frequency estimation methods for Doppler ultrasound signals have been introduced in this paper,then a new mean frequency estimation method based on Teager algorithm is proposed.With the comparison of the experiments results of computer simulated Doppler signals and Doppler signals from the flow velocity calibration system,the advantages,disadvantages,and applicable range of these methods are presented.
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