Abstract
An adaptive modal MUSIC algorithm is constructed to localize an acoustic source by a vertical array operating under conditions of incomplete information on a waveguide propagation channel . The results of statistical modeling are presented, which demonstrate the probabilities of correct source localization versus the input signal-to-noise ratio and the sample size. The method is validated by its application to the experimental data observed in the Ladoga Lake. It is shown that this method ensures greater stability of the estimation procedure to mismatch between the true and expected signal replica compared to the conventional element-space MUSIC.
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Notes
The corresponding procedure is referred as matched mode processing.
The localization of a source with a central frequency of 2625 Hz (also used in this experiment) using an adaptive lower rank algorithm was considered in [30].
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This study was carried out under the state task of the Institute of Applied Physics, Russian Academy of Sciences (project no. 0035–2014–0011).
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Translated by E. Chernokozhin
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Sazontov, A.G., Smirnov, I.P. Source Localization in an Acoustic Waveguide with Inaccurately Known Parameters Using Matched Processing in the Mode Space. Acoust. Phys. 65, 450–459 (2019). https://doi.org/10.1134/S1063771019040171
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DOI: https://doi.org/10.1134/S1063771019040171