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Application of Maximum Lenght Sequence in Silent Sonar

Abstract

Silent sonars are designed to reduce the distance over which their sounding pulses can be detected by intercept sonars. In order to meet this objective, we can use periodical sounding signals that have low power, a very long duration and wide spectrum. If used in the silent sonar's receiver, matched filtration ensures very good detection of motionless or slow moving targets. However, it is more difficult to detect echo signals of fast moving targets with Doppler effect causing significant error in target distance measurements. In an effort to find signals that can better resist Doppler effect, maximum length sequence was tested for its application in silent sonar. It has an elementary signal which includes linear frequency modulation. It was demonstrated that the signal produces much better results than those obtained with simple frequency modulation signals.

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Category:
Articles
Type:
artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
Published in:
HYDROACOUSTICS no. 15, pages 143 - 152,
ISSN: 1642-1817
Language:
English
Publication year:
2012
Bibliographic description:
Marszal J., Salamon R., Kilian L.: Application of Maximum Lenght Sequence in Silent Sonar// HYDROACOUSTICS. -Vol. 15., (2012), s.143-152
Verified by:
Gdańsk University of Technology

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