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A noise-tolerant group delay estimator applied to dispersion measurement in gases
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0002-6216-6132
Luleå tekniska universitet.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
2003 (English)In: Proceedings, 2003 IEEE Ultrasonics Symposium: October 5 - 8, 2003, Hilton Hawaiian Village, Honolulu, Hawaii ; an international symposium / / [ed] Donald E. Yuhas, Piscataway, NJ: IEEE Communications Society, 2003, p. 254-257Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we present a model-based group velocity estimator, that can be used to measure speed of sound in ultrasonic pulse-echo systems as a function of ultrasound frequency. The estimation of group velocities involves numerical differentiation of the phase difference. In the presence of noise, this becomes numerically unstable. The model-based approach presented herein, shows better tolerance to experimental noise. The performance of the estimator is evaluated with simulations as function of pulse bandwidth and SNR. Finally, the estimator applied to real data and compared with other methods for measuring speed of sound in Ethane and Oxygen.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2003. p. 254-257
National Category
Signal Processing
Research subject
Signal Processing
Identifiers
URN: urn:nbn:se:ltu:diva-37165DOI: 10.1109/ULTSYM.2003.1293401Scopus ID: 4143056048Local ID: b1835880-547a-11db-9592-000ea68e967bISBN: 0-7803-7922-5 (print)OAI: oai:DiVA.org:ltu-37165DiVA, id: diva2:1010663
Conference
IEEE Ultrasonics Symposium : 05/10/2003 - 08/10/2003
Note

Godkänd; 2003; 20061005 (ysko)

Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2018-02-06Bibliographically approved

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