| 汪源源,王威琪.超声Doppler血流信号瞬时频率的研究[J].声学技术,1993,(4):4~9 |
| 超声Doppler血流信号瞬时频率的研究 |
| Research of instantaneous frequency for Doppler ultrasound flow signals |
| 投稿时间：1993-07-05 修订日期：1993-08-11 |
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| 中文摘要: |
| 本文介绍了利用超声Doppler血流信号瞬时频率估计其平均频率的方法,通过计算机模拟实验和物理流速校刻实验,对比了频谱法、时间域法和瞬时频率法估计超声Doppler血流信号平均频率的精度,指出了瞬时频率法的优点和局限性. |
| 英文摘要: |
| The method to estimate the mean frequency of Doppler ultrasound flow signals with instantaneous frequency is described in this paper. The estimation accuracy of spectrum method, time-domain method and instantaneous frequency method are compared by computer simulation experiments and physical velocity experiments. The virtue and limitation of instantaneous frequency method are also pointed out. |
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