NDLI: Steady-state acoustic reflectometry for the reconstruction of solid cylindrical cavities

Content Provider	IEEE Xplore Digital Library
Author	Ceron, E. Yanez, O. Gonzalez, R.
Copyright Year	2002
Description	Author affiliation: Univ. Autonoma Metropolitana, Mexico City, Mexico (Ceron, E.; Yanez, O.; Gonzalez, R.)
Abstract	Acoustic pulse reflectometry has been used in the past for the indirect determination of the cross-section area vs. distance function describing the geometry of solid cylindrical cavities such as the upper airway tract. Excitation pulse bandwidth, noise and system losses are usually the main experimental issues and sources of reconstruction error in the inverse problem solution. This paper presents an inversion procedure that depends exclusively on pure-tone steady-state excitations, simplifying both the instrumentation and the signal processing requirements of the system while improving the reconstruction performance. Computer simulations indicate that accurate reconstruction is possible if the applied pure tone frequencies are closely spaced and the bandwidth is extended as possible within the experimental limitations. Existing estimation methods such as Ware-Aki or "layer peeling" were compared with the proposed scheme, which presented improved performance under equivalent experimental conditions.
Starting Page	1781
Ending Page	1782
File Size	160642
Page Count	2
File Format	PDF
ISBN	0780376129
ISSN	1094687X
DOI	10.1109/IEMBS.2002.1106650
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Steady-state Acoustic reflection Solids Acoustic pulses Bandwidth Reflectometry Geometry Acoustic noise Computer errors Inverse problems
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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