{"title":"Algorithms for Suppressing Noise from Local Interference Sources in Sonar Active Mode","authors":"A. I. Mashoshin, V. S. Mel’kanovich","doi":"10.1134/S1063771026600658","DOIUrl":null,"url":null,"abstract":"<p>The paper considers the problem of suppressing the noise of local sources of interference in sonar active mode. Three adaptive algorithms for spatial–frequency–time processing of signals from a multielement antenna array—the compensation algorithm, the standard Capon algorithm, and the Capon algorithm with limited levels of the major eigenvalues—are investigated in terms of their noise immunity for detecting echo signals. According to the simulation results, the compensation algorithm provides the highest noise immunity when using both a tone and an chirp probe signal. This algorithm allows for the suppression of noise from intense local sources of interference, including when the angular distance between the directions of arrival of the echo signal and the interference source signal is less than the width of the receiving antenna’s radiation pattern.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"72 2","pages":"172 - 183"},"PeriodicalIF":0.9000,"publicationDate":"2026-10-06","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/S1063771026600658","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
The paper considers the problem of suppressing the noise of local sources of interference in sonar active mode. Three adaptive algorithms for spatial–frequency–time processing of signals from a multielement antenna array—the compensation algorithm, the standard Capon algorithm, and the Capon algorithm with limited levels of the major eigenvalues—are investigated in terms of their noise immunity for detecting echo signals. According to the simulation results, the compensation algorithm provides the highest noise immunity when using both a tone and an chirp probe signal. This algorithm allows for the suppression of noise from intense local sources of interference, including when the angular distance between the directions of arrival of the echo signal and the interference source signal is less than the width of the receiving antenna’s radiation pattern.
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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