摘要
根据超声检测脉冲回波信号的特点,提出了基于小波变换的超声脉冲回波的去噪方法。结果表明,它能较好地抑制噪声,使用该法处理的信号的信噪比明显提高,并且具有较高的定位精度和纵向分辨率。
A method based on wavelet transform according to the characteristics of ultrasonic flaw echoes was put forward for signal de-noising in ultrasonic testing. Test results showed that noises were depressed well, signal-to-noise ratio was improved obviously, and flaw location accuracy and longitudinal resolution were improved by using the method.
出处
《机械工程与自动化》
2009年第6期50-52,共3页
Mechanical Engineering & Automation
关键词
超声检测
小波变换
信号处理
回波信号
ultrasonic testing
wavelet transform
signal processing
echo signal
