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Separation of dispersive coinciding signals by combining hard and soft modeling
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
2008 (English)In: Proceedings of the International Congress on Ultrasonics: Vienna, April 9-13, 2007, Paper ID 1563, Session R17, 2008Conference paper (Refereed)
Abstract [en]

In some ultrasonic measurement situations, an adequate signal separation is difficult to achieve. A typical situation is material characterization of thin media, relative to the emitted signal's time support. In this paper a new method is proposed that enables accurate signal separation of measured coinciding signals in the postprocessing stage. The method is based on a combination of hard physical and soft empirical models, which allows for a description of both known and unknown dynamics making the separation possible. The proposed technique is verified using real measurements on thin dispersive samples and validated with residual analysis.

Place, publisher, year, edition, pages
Research subject
Signal Processing
URN: urn:nbn:se:ltu:diva-40330DOI: 10.3728/ICUltrasonics.2007.Vienna.1563_martinssonLocal ID: f6ad7eb0-d191-11db-a0b9-000ea68e967bOAI: diva2:1013852
International Congress on Ultrasonics : 09/04/2007 - 12/04/2007
Godkänd; 2007; 20070206 (jesper)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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Martinsson, JesperHägglund, FredrikCarlson, Johan
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