| 超声多普勒信号平均频率估计方法的比较研究 |
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| 引用本文： | 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,2000,19(3):127-130. |
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| 作者姓名： | 张羽 汪源源 王威琪 余建国 |
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| 作者单位： | 复旦大学电子工程系,上海,200433 |
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| 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 |
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| 摘 要： | 本文介绍了一些常用的超声多谱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。
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| 关 键 词： | 平均频率 超声多普勒血流信号 估计法 诊断 |
| 收稿时间： | 1999/12/6 0:00:00 |
| 修稿时间： | 99-12-06 |
The comparison research of mean frequency estimation methods for Doppler ultrasound signals |
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| ZHANG Yu,WANG Yuan-yuan,WANG Wei-qi and YU Jian-guo.The comparison research of mean frequency estimation methods for Doppler ultrasound signals[J].Technical Acoustics,2000,19(3):127-130. |
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| Authors: | ZHANG Yu WANG Yuan-yuan WANG Wei-qi and YU Jian-guo |
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| Affiliation: | Department of Electrical Engineering, Fudan University, shanghai 200433, China;Department of Electrical Engineering, Fudan University, shanghai 200433, China;Department of Electrical Engineering, Fudan University, shanghai 200433, China;Department of Electrical Engineering, Fudan University, shanghai 200433, China |
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| Abstract: | 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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| Keywords: | Doppler ultrasound mean frequency instantaneous frequency |
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