{"title":"基于空间角场结构分析的底部声反射系数估算","authors":"A. L. Virovlyansky, A. Yu. Kazarova","doi":"10.1134/S1063771024602243","DOIUrl":null,"url":null,"abstract":"<div><p>A method for estimating the coefficient of sound reflection from the bottom of a waveguide based on field measurements using a vertical array at various distances from the source is discussed. To analyze the spatial-angular structure of the recorded field, the method of coherent states, borrowed from quantum theory, is used. The acoustic analogue of the coherent state expansion allows one to construct a filter to isolate the field component representing the contribution of a given narrow beam of rays. The ratio of the amplitudes of such a field component before and after reflection from the lakebed gives an estimate of the reflection coefficient of the central ray. The efficiency of the approach was tested using numerical simulation data. The results of its application for processing data from a lake experiment are presented.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 1","pages":"71 - 79"},"PeriodicalIF":1.2000,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Estimation of the Coefficient of Sound Reflection from the Bottom Based on an Analysis of the Spatial-Angular Field Structure\",\"authors\":\"A. L. Virovlyansky, A. Yu. Kazarova\",\"doi\":\"10.1134/S1063771024602243\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A method for estimating the coefficient of sound reflection from the bottom of a waveguide based on field measurements using a vertical array at various distances from the source is discussed. To analyze the spatial-angular structure of the recorded field, the method of coherent states, borrowed from quantum theory, is used. The acoustic analogue of the coherent state expansion allows one to construct a filter to isolate the field component representing the contribution of a given narrow beam of rays. The ratio of the amplitudes of such a field component before and after reflection from the lakebed gives an estimate of the reflection coefficient of the central ray. The efficiency of the approach was tested using numerical simulation data. The results of its application for processing data from a lake experiment are presented.</p></div>\",\"PeriodicalId\":455,\"journal\":{\"name\":\"Acoustical Physics\",\"volume\":\"71 1\",\"pages\":\"71 - 79\"},\"PeriodicalIF\":1.2000,\"publicationDate\":\"2025-05-21\",\"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/S1063771024602243\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acoustical Physics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063771024602243","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}
Estimation of the Coefficient of Sound Reflection from the Bottom Based on an Analysis of the Spatial-Angular Field Structure
A method for estimating the coefficient of sound reflection from the bottom of a waveguide based on field measurements using a vertical array at various distances from the source is discussed. To analyze the spatial-angular structure of the recorded field, the method of coherent states, borrowed from quantum theory, is used. The acoustic analogue of the coherent state expansion allows one to construct a filter to isolate the field component representing the contribution of a given narrow beam of rays. The ratio of the amplitudes of such a field component before and after reflection from the lakebed gives an estimate of the reflection coefficient of the central ray. The efficiency of the approach was tested using numerical simulation data. The results of its application for processing data from a lake experiment are presented.
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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