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Application of a noise signal in acoustic tomography of the arctic basin

Application of a noise signal in acoustic tomography of the arctic basin Abstract The time correlation function of a noise signal propagating in an arctic-type waveguide is considered. For a coherent signal, the time cross-correlation function is formed with the use of either the total signal, or a single selected mode, or a reference signal at one of the correlator inputs. The use of narrow-band signals is shown to be preferable, because the waveguide dispersion affects the waveguide response. It is demonstrated that, for tomographic investigations in a waveguide irregular along the path, it is expedient to correlate the signals received at two different points that are selected on the path so as to enclose the waveguide part the variability of whose parameters is the object of interest. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acoustical Physics Springer Journals

Application of a noise signal in acoustic tomography of the arctic basin

Kudryashov, V. M.
Acoustical Physics , Volume 48 (2): 7 – Mar 1, 2002
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References (10)

Publisher
Springer Journals
Copyright
2002 MAIK "Nauka/Interperiodica"
ISSN
1063-7710
eISSN
1562-6865
DOI
10.1134/1.1460955
Publisher site
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Abstract

Abstract The time correlation function of a noise signal propagating in an arctic-type waveguide is considered. For a coherent signal, the time cross-correlation function is formed with the use of either the total signal, or a single selected mode, or a reference signal at one of the correlator inputs. The use of narrow-band signals is shown to be preferable, because the waveguide dispersion affects the waveguide response. It is demonstrated that, for tomographic investigations in a waveguide irregular along the path, it is expedient to correlate the signals received at two different points that are selected on the path so as to enclose the waveguide part the variability of whose parameters is the object of interest.

Journal

Acoustical Physics – Springer Journals

Published: Mar 1, 2002

Keywords: Acoustics

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