计算机技术与发展2012，Vol.22Issue(3)：125-128,4.
基于LabVIEW的超声信号小波阈值去噪方法
Wavelet Threshold De-Noising Method of Ultrasonic Signal Based on LabVIEW
张燕 1周西峰 1郭前岗1
作者信息
- 1. 南京邮电大学自动化学院,江苏南京210046
- 折叠
摘要
Abstract
Graphical programming software LabVIEW has a very strong signal acquisition function,but to process large amounts of data computing for complex applications.it becomes powerless. Mathematical tool software MATLAB with powerful computing and higher programming efficiency can make up for the lack of LabVIEW development. Absorbing the advantages of the two software, use the hybrid programming approach to practical engineering de-noising. At the same time,signal to noise ratio for ultrasonic flaw echo signal is low, and the signal is easy to be drowned by the noise. Owe to the characteristics,select the method of wavelet threshold,by calling the MAT-LAB Script node for signal simulation. Simulation result shows that the stein's unbiased risk threshold method can get better de-noising effect,and it gets a higher signal to noise ratio.关键词
LabVIEW/MATLAB/超声探伤信号/小波变换/阈值去噪Key words
LabVIEW/MATLAB/ultrasonic flaw detection signal/wavelet/threshold de-nosing分类
信息技术与安全科学引用本文复制引用
张燕,周西峰,郭前岗..基于LabVIEW的超声信号小波阈值去噪方法[J].计算机技术与发展,2012,22(3):125-128,4.
