| 小波分析在超声回波测量中的应用 |
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| 引用本文： | 邹晓红.小波分析在超声回波测量中的应用[J].传感器与微系统,2005,24(7):78-79,82. |
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| 作者姓名： | 邹晓红 |
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| 作者单位： | 燕山大学,信息工程学院,河北,秦皇岛,066004 |
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| 摘 要： | 利用小波变换的时频局部化性质,对超声回波弱信号特征进行提取,得到了较好的边缘信号,从而对信号进行全面细致的分析.用LabWIEW采集系统和小波软件算法验证了这种方法的有效性.实验结果表明:这种小波分析方法适合于超声回波信号的检测和特征提取,在改善了信噪比的同时,还保持了很高的时间(空间)分辨力,具有准确度高、抗噪声性能好等优点,并将该技术应用于水中距离测量,提高了系统测量的准确度.
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| 关 键 词： | 超声波 小波分析 距离测量 小波分析 超声回波 系统测量 技术应用 echo ultrasonic measurement wavelet analysis 距离测量 噪声性能 分辨力 空间 时间 信噪比 改善 特征提取 检测 回波信号 结果 实验 |
| 文章编号： | 1000-9787(2005)07-0078-02 |
Application of wavelet analysis in measurement of ultrasonic echo |
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| ZOU Xiao-hong.Application of wavelet analysis in measurement of ultrasonic echo[J].Transducer and Microsystem Technology,2005,24(7):78-79,82. |
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| Authors: | ZOU Xiao-hong |
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| Abstract: | Ultrasonic echo characteristic is extracted by using part characteristic of wavelet time-frequent,so as to get a better echo signal,and particularity signal is completely analyzed.The availability of the method is validated by LabVIEW collection system and wavelet soft arithmetic.The test result shows that the wavelet method can be applied to measurement of ultrasonic echo signal and characteristic extraction,at the same time,when signal noise ratio is improved,higher time (space) resolution is remained.The method has the advantage of higher precision,better disturbance resistance.The method is used to distance measurement in water to improve the accuracy of measurement system. |
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| Keywords: | ultrasonic wave wavelet analysis distance measurement |
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