| 多普勒超声信号时间序列数据的计算机提取 |
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| 引用本文： | 王平立,单华宁,王珏. 多普勒超声信号时间序列数据的计算机提取[J]. 电脑开发与应用, 2004, 17(10): 29-30,33 |
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| 作者姓名： | 王平立 单华宁 王珏 |
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| 作者单位： | 南京理工大学,南京,210094;江苏省中医院,南京,210029 |
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| 摘 要： | 设计了一套采集系统 ,将多普勒超声信号时间序列提取出来 ,应用小波包分析算法 ,提出了一种对含噪信号进行去噪的方法 ,并对所获得的数据利用小波包分析进行去噪处理。实践表明 ,系统能比较准确获取血流信号的时间序列数据 ,可以对实验数据进行非线性分析 ,观察其变化规律 ,对进一步研究心脑血管疾病起到一定的作用。
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| 关 键 词： | 小波包分析 信号提取 时间序列 去噪处理 血流信号 多普勒超声 |
Acquisition of Time Series from Doppler Ultrasound by Computer |
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| Abstract: | This paper design a digital system that can get time serie of Doppler Ultrasound's activities and with the wavelet package analysis,a noise reduction method is presented for signal with noise,and the noise is reduced with the wavelet package analysis for the time serial data.It is proved by an example that the system can obtained exactly the time series data of the blood flow activity and can analyze the experimented data with nonlinear mode to find out the various rules.The system will offer assistance for the future study of the cardiovascular and cerebrovascular disease. |
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| Keywords: | wavelet package analysis signal extraction time serial noise reduction processing flood flow signal Doppler ultrasound |
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