Accuracy of the deterministic travel time retrieval from cross-correlations of non-diffuse ambient noise | Zendy

Oleg A. Godin | Zendy

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Accuracy of the deterministic travel time retrieval from cross-correlations of non-diffuse ambient noise

Author(s) -

Oleg A. Godin

Publication year - 2009

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.3258064

Subject(s) - ambient noise level , noise (video) , cross correlation , acoustics , range (aeronautics) , interferometry , function (biology) , correlation function (quantum field theory) , seismic interferometry , environmental science , remote sensing , physics , computer science , optics , geology , mathematics , telecommunications , statistics , materials science , sound (geography) , spectral density , artificial intelligence , composite material , evolutionary biology , image (mathematics) , biology

Measurements of long-range cross-correlations of ambient noise underlie acoustic noise interferometry, a promising technique for passive remote sensing of the environment. Previously established simple, exact relations between deterministic Green's functions and the cross-correlation function of perfectly diffuse noise do not necessarily hold for noise fields in the ocean and atmosphere. Here, the method of a stationary phase is applied to study the information content of the cross-correlation function of non-diffuse noise and to quantify the accuracy of passive measurements of the acoustic travel times.

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