Archives of Acoustics, 45, 4, pp. 709–720, 2020
10.24425/aoa.2020.135277

Impact of Spatial Noise Correlation on Bearing Accuracy in DIFAR Systems

Mariusz RUDNICKI
Gdańsk University of Technology
Poland

Jacek MARSZAL
Gdańsk University of Technology
Poland

Roman SALAMON
Gdańsk University of Technology
Poland

DIFAR type underwater passive systems are one of the more commonly used tools for detecting submarines. At the design stage, which usually uses computer simulations, it is necessary to generate acoustic noise of the sea. It has been shown that correlating noise significantly reduces these errors compared to the assumption that noise is uncorrelated. In addition, bearing errors have been shown to be the same in systems with a commonly used antenna containing five hydrophones, as in a system without a central hydrophone, which may be useful in some DIFAR system design solutions.
Keywords: underwater noise; noise correlation; DIFAR sonobuoys; bearing accuracy
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Copyright © The Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0).

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DOI: 10.24425/aoa.2020.135277