Comparison of Cascade and Concurrent Signal Denoising Methods
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F12%3A00183500" target="_blank" >RIV/68407700:21230/12:00183500 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Comparison of Cascade and Concurrent Signal Denoising Methods
Original language description
An~important issue in ultrasonic nondestructive testing is the~detection of flaw echoes in the~presence of background noise created by instrumentation and by clutter noise. Signal averaging, autoregressive analysis, spectrum analysis, matched filtering and the~wavelet transform have all been used to filter noise in~ultrasonic signals. Widely-used wavelet threshold estimation algorithms are not designed for EMAT pulse-echo signals, and therefore do not exploit their unique impulse nature. The~approachesto ultrasonic signal filtering proposed in this paper are based on wavelet denoising combined with other denoising algorithms. The~denoising algorithms are combined with a~knowledge ultrasonic echo detection and system frequency characteristics. The~compared methods were evaluated on signals measured with EMAT probes and under various Signal-to-Noise Ratio (SNR) conditions, and they~outperform the~wavelet transform with the~UNIVERSAL threshold estimation method.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JB - Sensors, detecting elements, measurement and regulation
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GD102%2F09%2FH082" target="_blank" >GD102/09/H082: Sensors and intelligent sensor systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
2011 IEEE International Ultrasonics Symposium (IUS)
ISBN
978-1-4577-1252-4
ISSN
1948-5719
e-ISSN
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Number of pages
4
Pages from-to
516-519
Publisher name
IEEE
Place of publication
New York
Event location
Orlando
Event date
Oct 18, 2011
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000309918400122