[1]邓跃红,聂双双..基于小波变换的水下超声波测距方法研究[J].郑州大学学报(工学版),2007,28(04):75-79.[doi:10.3969/j.issn.1671-6833.2007.04.019]
　Deng Yuehong,Nie Shuangshuang.Research on underwater ultrasonic ranging method based on wavelet transform[J].Journal of Zhengzhou University (Engineering Science),2007,28(04):75-79.[doi:10.3969/j.issn.1671-6833.2007.04.019]
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基于小波变换的水下超声波测距方法研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
28卷
期数:
2007年04期
页码:
75-79
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Research on underwater ultrasonic ranging method based on wavelet transform
作者:
邓跃红; 聂双双.
中南大学,机电工程学院,湖南,长沙,410083, 中南大学,机电工程学院,湖南,长沙,410083
Author(s):
Deng Yuehong; Nie Shuangshuang
关键词:
超声波;  小波变换;  阈值检测;  测距
Keywords:
DOI:
10.3969/j.issn.1671-6833.2007.04.019
文献标志码:
A
摘要:
通过分析传统的阈值检测法超声波测距的缺点,提出了基于小波变换的水下超声波测距方法.应用数字信号处理技术,设计出基于Hamming窗函数的数字带通滤波器,对采样信号进行数字滤波,构造高斯小波基.介绍了一种将采样信号与小波基做卷积进行小波变换,精确捕捉回波信号到达时刻的超声波水下测距系统.在实验室水池中分别用传统的阈值检测法和基于小波变换的超声波测距法进行了实验测量,并对测量数据进行了比较,验证了基于小波变换的水下超声波测距可以达到更高的测量精度,优于传统的阈值检测法.
Abstract:

By analyzing the shortcomings of ultrasonic ranging by the traditional threshold detection method, an underwater ultrasonic ranging method based on wavelet transform is proposed. Using digital signal processing technology, a digital band-pass filter based on Hamming’s window function is designed to digitally filter the sampled signal and construct a Gaussian wavelet base. An ultrasonic underwater ranging system that convolves the sampled signal with the wavelet base for wavelet transformation and accurately captures the arrival time of the echo signal is introduced. The traditional threshold detection method and the ultrasonic ranging method based on wavelet transform were used in the laboratory pool, and the measurement data were compared, which verified that the underwater ultrasonic ranging based on wavelet transform could achieve higher measurement accuracy and was better than the traditional threshold detection method.

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更新日期/Last Update: 1900-01-01