Comparison of Time-Frequency Distributions for Pulse-Echo Ultrasonic Evaluation and Filtering
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F10%3A00169444" target="_blank" >RIV/68407700:21230/10:00169444 - 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 Time-Frequency Distributions for Pulse-Echo Ultrasonic Evaluation and Filtering
Original language description
For a direct evaluation of ultrasonic signals it is necessary to analyse data with an acceptable level of noise. Ultrasonic signals represent a specific category of time domain signals to be analysed. In order to increase difference between the level ofnoise and the amplitude of the ultrasonic pulse a proper method for data differentiation has to be used. Within this article are discussed and compared two time-frequency distributions. The first approach is via wavelet transform. The second proposed method is S-transform. This transformation has been recently introduced for ultrasonic echo analyses. This tool represents intermediate stage between the Fourier transform analysis and the Wavelet transform analysis. In order to filter ultrasonic signals from Electromagnetic Acoustic transducer with a high level of noise, new, different approach was developed. The result showed complexity of the ultrasonic signal and noise in case of the Electromagnetic Acoustic Transducer.
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
Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
IMEKO Symposium TC-4, TC-19 & IWADC Instrumentation for the ICT Area
ISBN
978-80-553-0424-3
ISSN
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e-ISSN
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Number of pages
1
Pages from-to
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Publisher name
Technical University of Košice
Place of publication
Košice
Event location
Košice
Event date
Sep 8, 2010
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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