{"title":"On a Method for Classifying Hydroacoustic Radiation Sources at the Output of Adaptive Spatial Processing","authors":"G. S. Malyshkin","doi":"10.1134/S1063771025600482","DOIUrl":null,"url":null,"abstract":"<p>This paper describes the methodology and results of marine experiments on the construction and analysis of direction-finding reliefs and recorded trajectories from the standpoint of classifying observed sources (surface and underwater objects) in noise direction-finding mode as applied to autumn conditions in a coastal wedge area. It is shown that, in noise direction-finding mode, trajectory bearing modulation occurring when signals propagate with reflection from boundaries, namely, the surface and bottom, can be used in addition to the known classification features for distinguishing surface and underwater objects. This modulation is efficiently detected after the power of strong signals is limited.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"453 - 466"},"PeriodicalIF":1.2000,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acoustical Physics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063771025600482","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ACOUSTICS","Score":null,"Total":0}
引用次数: 0
Abstract
This paper describes the methodology and results of marine experiments on the construction and analysis of direction-finding reliefs and recorded trajectories from the standpoint of classifying observed sources (surface and underwater objects) in noise direction-finding mode as applied to autumn conditions in a coastal wedge area. It is shown that, in noise direction-finding mode, trajectory bearing modulation occurring when signals propagate with reflection from boundaries, namely, the surface and bottom, can be used in addition to the known classification features for distinguishing surface and underwater objects. This modulation is efficiently detected after the power of strong signals is limited.
期刊介绍：
Acoustical Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It covers theoretical and experimental aspects of basic and applied acoustics: classical problems of linear acoustics and wave theory; nonlinear acoustics; physical acoustics; ocean acoustics and hydroacoustics; atmospheric and aeroacoustics; acoustics of structurally inhomogeneous solids; geological acoustics; acoustical ecology, noise and vibration; chamber acoustics, musical acoustics; acoustic signals processing, computer simulations; acoustics of living systems, biomedical acoustics; physical principles of engineering acoustics. The journal publishes critical reviews, original articles, short communications, and letters to the editor. It covers theoretical and experimental aspects of basic and applied acoustics. The journal welcomes manuscripts from all countries in the English or Russian language.
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