Acoustic Wave Correlation Tomography of Time-Varying Disordered Structures

• Autorzy: Samelsohn G. , Tapuchi S.

Identyfikatory

DOI

10.24425/aoa.2018.125158

• Języki publikacji: EN

Abstrakty

EN

An original model based on first principles is constructed for the temporal correlation of acoustic waves propagating in random scattering media. The model describes the dynamics of wave fields in a previously unexplored, moderately strong (mesoscopic) scattering regime, intermediate between those of weak scattering, on the one hand, and diffusing waves, on the other. It is shown that by considering the wave vector as a free parameter that can vary at will, one can provide an additional dimension to the data, resulting in a tomographic-type reconstruction of the full space-time dynamics of a complex structure, instead of a plain spectroscopic technique. In Fourier space, the problem is reduced to a spherical mean transform defined for a family of spheres containing the origin, and therefore is easily invertible. The results may be useful in probing the statistical structure of various random media with both spatial and temporal resolution.

Słowa kluczowe

EN

wave scattering; random media; time correlation; tomographic reconstruction

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2018
• Tom: Vol. 43, No. 4
• Strony: 647--655
• Opis fizyczny: Bibliogr. 38 poz., rys., wykr.

Twórcy

autor

Samelsohn G.

• Center for Advanced Imaging Systems, Department of Electrical and Electronics Engineering, Shamoon College of Engineering, Ashdod 77245, Israel

autor

Tapuchi S.

• Center for Advanced Imaging Systems, Department of Electrical and Electronics Engineering, Shamoon College of Engineering, Ashdod 77245, Israel

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).