Estimation of positions of local narrow-band sources on a ship hull using a vertical antenna array

Authors

  • Denis A. Orlov Institute of Applied Physics of the Russian Academy of Sciences, Russian Federation
  • A. A. Rodionov Institute of Applied Physics of the Russian Academy of Sciences, Russian Federation
  • V. I. Turchin Institute of Applied Physics of the Russian Academy of Sciences, Russian Federation

DOI:

https://doi.org/10.1109/ICATT.2009.4435164

Keywords:

acoustic array systems and processing, source localization and parameter estimation

Abstract

A method for estimation of positions of local narrow-band sources on a moving ship, allowing one to identify the mechanisms making the greatest contribution to its sound pressure level, is proposed in the article. The actuality of this problem is related to strengthening the requirements imposed on the sound pressure level of ships because of ecological and other requirements. The method is based on space-time filtering of the signal received by the elements of a vertical antenna array. The ship is supposed to move straightly and uniformly at a short distance from the array; the track parameters are supposed to be known. The results of the method testing with the use of the data obtained in sea experiment are presented in the article. The testing has shown that the source localizing precision is close to the theoretically achievable one.

An analysis of the method error is performed in a wide frequency range using numerical modeling.

References

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VAN TREES, H.L. Detection, Estimation, and Modulation Theory. Part I. New York: John Wiley & Sons Inc., 1968.

ORLOV, D.; RODIONOV, A. Tracking of underwater acoustic tone sources with linear antenna arrays. Proc. of Acoustics, Paris, 2008, p.2459-2464.

ZVEREV, V.A. Aperture synthesis in acoustics. Acoustical Physics, 1995, v.41, p.696-699.

FIKS, I.S.; TURCHIN, V.I. The near-field acoustic measurements. In: The formation of Acoustical Fields in Oceanic Waveguides. Collected scientific papers. Institute of Applied Physics of the Russian Academy of Sciences, 1995.

Published

2009-10-10

Issue

Section

Remote sensing and hydroacoustic antennas