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Abstract

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.

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Authors and Affiliations

Mariusz Rudnicki
Jacek Marszal
Roman Salamon
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Abstract

Various types of passive sonar systems are used to detect submarines. These activities are complex and demanding. Therefore, computer simulations are most often used at the design stage of these systems. For this reason, it is also necessary to simulate the acoustic ambient noise of the sea. The article proposes a new numerical model of surface and quasi-spherical sea noise and presents its statistical parameters. The results of the application of the developed noise model to analyse the received signals of the DIFAR sonobuoy are also presented.
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Bibliography

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Authors and Affiliations

Mariusz Rudnicki
1
Roman Salamon
1
Jacek Marszal
1

  1. Gdansk University of Technology, Faculty of Electronics, Telecommunications and Informatics, Department of Sonar Systems, Gdansk, Poland

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