Sliding windows in non-destructive testing systems

It is very important to improve noise immunity in ultrasonic nondestructive testing systems. This objective is achieved by reflected signal de-noising. The wavelets transform based methods are widely used for noise reduction in recent time. Effectiveness of the wavelets transform based de-noising pr...

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Bibliographic Details
Main Authors: Kazanavicius, E., Mikuckas, A., Mikuckiene, L.
Format: Conference Proceeding
Language:English
Subjects:
Applied sciences
Computer science
control theory
systems
Control theory. Systems
Electronic equipment testing
Exact sciences and technology
Laboratories
Noise cancellation
Noise reduction
Nondestructive testing
Signal processing
Signal to noise ratio
System testing
Wavelet transforms
Working environment noise
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Description
Summary:It is very important to improve noise immunity in ultrasonic nondestructive testing systems. This objective is achieved by reflected signal de-noising. The wavelets transform based methods are widely used for noise reduction in recent time. Effectiveness of the wavelets transform based de-noising procedure depends on the signal to noise ratio. The signal to noise ratio in a non-destructive testing system depends not only on the noise level, but also on the length of the signal to be processed. Reducing the length of the signal to be processed may increase noise immunity. sliding windows allow reducing the length of the signal to be processed. Execution of this method not only improves noise immunity of the system, but also requires fewer amounts of calculations.
ISSN:2158-9860
2158-9879
DOI:10.1109/ISIC.2004.1387725