Application of empirical mode decomposition to ultrasonic signal

被引：0

作者：

Zhang, Q ^{[1
]}

Que, PW ^{[1
]}

Liu, QK ^{[1
]}

Chen, TL ^{[1
]}

Han, T ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Inst Automot Detect, Shanghai, Peoples R China

来源：

2005 IEEE Ultrasonics Symposium, Vols 1-4 | 2005年

关键词：

ultrasonic signal; denoising; empirical mode decomposition;

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

In ultrasonic nondestructive testing, the ultrasonic echo-signal of pulse reflection is often disturbed by electronic noise, structure noise and so on. In order to improve signal detection and analysis the ultrasonic defect echo-signal must be denoised. In this paper, a new noise cancellation of empirical mode decomposition is proposed for enhancing signal-to-noise ration of the ultrasonic echo-signal. The ultrasonic echo-signal was collected by experimental system of ultrasonic data acquisition. The signal-to-noise ratio was enhanced about 6db by using this method and it is easy to identify the ultrasonic defect signal.

引用

页码：1789 / 1792

页数：4

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