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|Type:||Artigo de periódico|
|Title:||Time-reversal multiple signal classification in case of noise: A phase-coherent approach|
|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. (C) 2011 Acoustical Society of America. [DOI: 10.1121/1.3626526]|
|Editor:||Acoustical Soc Amer Amer Inst Physics|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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