Stable Components of the Sound Field at the Aperture of an Array under Multipath Propagation Conditions

The paper discusses representation of the wave field on a vertical array in an underwater sound channel as the superposition of components stable with respect to large-scale perturbations of the sound velocity field. Each such component is formed by a narrow beam of rays incident on the array apertu...

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Bibliographic Details
Published inAcoustical physics Vol. 68; no. 2; pp. 162 - 174
Main Authors Virovlyansky, A. L., Kazarova, A. Yu
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.04.2022
Springer
Springer Nature B.V
Subjects
Acoustic velocity
Acoustics
Apertures
Arrays
Ocean Acoustics. Hydroacoustics
Perturbation
Physics
Physics and Astronomy
Representations
Sound fields
Underwater acoustics
Velocity distribution
Wave propagation
coherent states
array
signal processing
underwater sound channel
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Summary:The paper discusses representation of the wave field on a vertical array in an underwater sound channel as the superposition of components stable with respect to large-scale perturbations of the sound velocity field. Each such component is formed by a narrow beam of rays incident on the array aperture. This representation makes it possible to modify traditional matched field processing by switching from comparison of the measured and calculated fields at the array to comparison of the stable components of these fields. It is shown that the modified approach in solving the problem of source localization makes it possible to weaken the requirements on the accuracy of the mathematical model of the medium.
ISSN:1063-7710
1562-6865
DOI:10.1134/S1063771022020117