Experimental Study on the Impact of Seasonal Sound Speed Variability on Signal Detection Range in Arabian Sea
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Published:2022-08-26
Issue:4
Volume:72
Page:647-653
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ISSN:0976-464X
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Container-title:Defence Science Journal
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language:
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Short-container-title:Def. Sc. J.
Author:
Shani N X ElizabethORCID,
R Nair NimmiORCID,
Raju RPORCID,
R SajeevORCID
Abstract
Temporal variability of Signal Detection Range (SDR) with respect to measured noise level and sound speed is examined. An N x 2D acoustic model which included bathymetric variations, was used to study detection ranges for an area in Arabian Sea. Azimuthal and seasonal SDR at octave bands within 500 Hz were determined at different receiver depths. Study shows that seasonal change in sound speed profile resulted in high SDR and noise level in winter at the location. Study also confirms the significant seasonal difference in detection range corresponds to the cut off frequency at 160 Hz. Detection range for a receiver at a depth 40 m is observed to be high across the azimuth and seasons of study.
Publisher
Defence Scientific Information and Documentation Centre
Subject
Electrical and Electronic Engineering,Computer Science Applications,General Physics and Astronomy,Mechanical Engineering,Biomedical Engineering,General Chemical Engineering
Cited by
1 articles.
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