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Time-reversal multiple signal classification in case of noise: A phase-coherent approach.
- Source :
-
Journal of the Acoustical Society of America . Oct2011, Vol. 130 Issue 4, p2024-2034. 11p. - Publication Year :
- 2011
-
Abstract
- The problem of locating point-like targets beyond the classical resolution limit is revisited. Although time-reversal MUltiple SIgnal Classification (MUSIC) is known for its super-resolution ability in localization of point scatterers, in the presence of noise this super-resolution property will easily break down. In this paper a phase-coherent version of time-reversal MUSIC is proposed, which can overcome this fundamental limit. The algorithm has been tested employing synthetic multiple scattering data based on the Foldy-Lax model, as well as experimental ultrasound data acquired in a water tank. Using a limited frequency band, it was demonstrated that the phase-coherent MUSIC algorithm has the potential of giving significantly better resolved scatterer locations than standard time-reversal MUSIC. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NOISE
*SIGNAL processing
*ALGORITHMS
*MULTIPLE scattering (Physics)
*SOUND
*TANKS
Subjects
Details
- Language :
- English
- ISSN :
- 00014966
- Volume :
- 130
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Journal of the Acoustical Society of America
- Publication Type :
- Academic Journal
- Accession number :
- 66388373
- Full Text :
- https://doi.org/10.1121/1.3626526