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Equal Phase Lines and Phase Invariant in the Sound Field of Deep Water 深水声场中的等相线与相不变性
IF 1.2 4区 物理与天体物理
Acoustical Physics Pub Date : 2025-08-18 DOI: 10.1134/S1063771025600354
S. P. Aksenov, G. N. Kuznetsov, A. N. Stepanov
{"title":"Equal Phase Lines and Phase Invariant in the Sound Field of Deep Water","authors":"S. P. Aksenov,&nbsp;G. N. Kuznetsov,&nbsp;A. N. Stepanov","doi":"10.1134/S1063771025600354","DOIUrl":"10.1134/S1063771025600354","url":null,"abstract":"<div><p>The spatial–frequency responses of the amplitudes and phases of the sound pressure in deep water have been studied. Analytical relationships have been obtained that make it possible to calculate and compare the amplitude–phase structures of water, leaky, and trapped modes, as well as the sound pressure field formed by the sum of the modes. The calculations were performed using the modified WKB (Wentzel–Kramers–Brillouin) approximation. It has been shown that in deep water, as in shallow water, there are stable equal phase lines along which, under certain conditions, coherent summation of complex Fourier components is possible. To describe the equal phase lines, a differential equation has been obtained that uses the phase invariant, already studied in shallow water, as a basic parameter. This has made it possible to study the properties of the phase invariant corresponding to water, leaky, and trapped modes in all zones of the sound field for deep water as well. It is established that at different distances in the field constructed from the sum of all modes, invariant properties are manifested, primarily, the modes that dominate at these distances. It is shown that leaky modes formed in the near illumination zone and in the shadow zone, formed by steep rays reflected from the bottom, have invariant properties only at large distances from the source. Water and trapped modes have invariant properties in full and at all distances. Recommendations are given on the use of equal phase lines and the phase invariant in processing experimental data and modeling.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 2","pages":"201 - 215"},"PeriodicalIF":1.2,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Acoustic Methods of Reagentless Medical Laboratory Diagnostics 无试剂医学实验室诊断的声学方法
IF 1.2 4区 物理与天体物理
Acoustical Physics Pub Date : 2025-05-21 DOI: 10.1134/S1063771024602309
A. V. Klemina, S. N. Gurbatov, V. A. Klemin
{"title":"Acoustic Methods of Reagentless Medical Laboratory Diagnostics","authors":"A. V. Klemina,&nbsp;S. N. Gurbatov,&nbsp;V. A. Klemin","doi":"10.1134/S1063771024602309","DOIUrl":"10.1134/S1063771024602309","url":null,"abstract":"<div><p>Acoustic methods of nonreactive medical laboratory diagnostics were developed using the BIOM acoustic analyzer as a measuring device. The device contains two ultrasmall ultrasonic resonators (about 100 µL) in volume. The device’s microprocessor system controls two ultrathermostats and maintains temperatures in the resonators in the range 20–38°C with an accuracy of ± 0.005°C. The developed special software makes it possible to determine the acoustic characteristics (rate and absorption of ultrasound) in blood serum, whole blood, and plasma with a relative error of ±5 × 10<sup>–4</sup> in terms of speed of ultrasound and ±10<sup>–2</sup> in terms of ultrasound absorption. This made it possible to determine the total protein, protein fractions, parameters of the lipid spectrum, and apolipoproteins A1 and B, as well as the elastic properties of patients' erythrocytes in vitro.The article presents a flowchart of the acoustic analyzer, an algorithm for its functioning, describes acoustic methods for determining total protein, protein fractions, lipid spectrum, and apolipoproteins A1 and B in blood serum and the elasticity of erythrocytes in whole blood in vitro.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 1","pages":"128 - 133"},"PeriodicalIF":1.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the History of Parametric Acoustic Arrays 参数声阵列的历史
IF 1.2 4区 物理与天体物理
Acoustical Physics Pub Date : 2025-05-21 DOI: 10.1134/S1063771024603261
L. A. Ostrovsky
{"title":"On the History of Parametric Acoustic Arrays","authors":"L. A. Ostrovsky","doi":"10.1134/S1063771024603261","DOIUrl":"10.1134/S1063771024603261","url":null,"abstract":"<div><p>The article discusses nontrivial points related to the invention, theory, and applications of radiating and receiving parametric acoustic arrays (PAs) in the United States and Soviet Union.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 1","pages":"18 - 22"},"PeriodicalIF":1.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Acoustic Imaging with Superresolution Techniques Using Nonequidistant Planar Antenna Arrays 基于非等距平面天线阵列的超分辨率声成像技术
IF 1.2 4区 物理与天体物理
Acoustical Physics Pub Date : 2025-05-21 DOI: 10.1134/S1063771024602656
A. A. Rodionov, N. V. Savelev
{"title":"Acoustic Imaging with Superresolution Techniques Using Nonequidistant Planar Antenna Arrays","authors":"A. A. Rodionov,&nbsp;N. V. Savelev","doi":"10.1134/S1063771024602656","DOIUrl":"10.1134/S1063771024602656","url":null,"abstract":"<div><p>The article studies the possibility of using planar nonequidistant antenna arrays in problems of constructing acoustic images. Such antenna arrays can be used, e.g., for diagnostics of various mechanisms in order to determine areas of increased noise emission. Numerical modeling was performed in the paper to determine the advantages of using nonequidistant arrays. Comparisons of modern classical superresolution methods with one of the new methods developed at the Institute of Applied Physics, Russian Academy of Sciences, are given. The results were confirmed in an experiment. The results of the study allow the conclusion that planar sparse nonequidistant antenna arrays make it possible to reduce the number of microphones used or to expand the frequency range in problems of source selection and their spatial resolution.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 1","pages":"42 - 49"},"PeriodicalIF":1.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nonlinear Acoustic Effects in a Resonator with Dislocation Hysteresis and Linear Dissipation 位错迟滞和线性耗散谐振器中的非线性声效应
IF 1.2 4区 物理与天体物理
Acoustical Physics Pub Date : 2025-05-21 DOI: 10.1134/S1063771024602218
V. E. Nazarov, S. B. Kiyashko
{"title":"Nonlinear Acoustic Effects in a Resonator with Dislocation Hysteresis and Linear Dissipation","authors":"V. E. Nazarov,&nbsp;S. B. Kiyashko","doi":"10.1134/S1063771024602218","DOIUrl":"10.1134/S1063771024602218","url":null,"abstract":"<p>A theoretical study of nonlinear acoustic effects arising upon harmonic excitation of a shear wave in rod solid resonator with dislocation hysteresis and linear dissipation has been performed using the perturbation method. The expressions for the resonance curve, amplitude-dependent loss, a shift of resonance frequencies, and amplitude of a third-harmonic wave have been obtained. A graphical and numerical study of the obtained results has been performed.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 1","pages":"11 - 17"},"PeriodicalIF":1.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characteristics of Low-Frequency Ambient Noise in Shallow Water With a Heterogeneous Bottom Structure 具有非均匀底结构的浅水低频环境噪声特性
IF 1.2 4区 物理与天体物理
Acoustical Physics Pub Date : 2025-05-21 DOI: 10.1134/S1063771024602747
S. D. Bodjona, D. D. Sidorov, V. G. Petnikov, A. A. Lunkov
{"title":"Characteristics of Low-Frequency Ambient Noise in Shallow Water With a Heterogeneous Bottom Structure","authors":"S. D. Bodjona,&nbsp;D. D. Sidorov,&nbsp;V. G. Petnikov,&nbsp;A. A. Lunkov","doi":"10.1134/S1063771024602747","DOIUrl":"10.1134/S1063771024602747","url":null,"abstract":"<div><p>The characteristics of low-frequency noise fields in shallow-water acoustic waveguides with a heterogeneous bottom structure in the presence of waterlike areas are analyzed through numerical experiments. Two seabed models are considered: an idealized one with a linear change in the sound speed in the bottom along one of the Cartesian coordinates and a realistic one where the sound speed in the bottom depends on all three coordinates. The second model is close to the real situation in one shallow-water area of the Kara Sea. Noise fields from distributed near-surface sources (surface waves) and a point source (ship noise) are studied. Calculations are performed using the wide-angle parabolic equation method. Averaged horizontal and vertical directivity patterns of the surface wave noise field are obtained, as well as average intensity values depending on the sound frequency and position of the receiving vertical array. Spatial dependence of the local source noise level is constructed for bottom areas with different properties. The possibility of detecting areas with a waterlike bottom by recording the noise of a moving vessel with a stationary vertical acoustic array is demonstrated. In the case of distributed sources, it is shown that the averaged noise characteristics weakly depend on the sound speed in the bottom.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 1","pages":"62 - 70"},"PeriodicalIF":1.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Holographic Methods of Underwater Acoustic Signals Processing: A Review 水声信号全息处理方法综述
IF 1.2 4区 物理与天体物理
Acoustical Physics Pub Date : 2025-05-21 DOI: 10.1134/S106377102460253X
V. M. Kuz’kin, S. A. Pereselkov
{"title":"Holographic Methods of Underwater Acoustic Signals Processing: A Review","authors":"V. M. Kuz’kin,&nbsp;S. A. Pereselkov","doi":"10.1134/S106377102460253X","DOIUrl":"10.1134/S106377102460253X","url":null,"abstract":"<div><p>The current state of the problem of applying holographic interferometry in underwater acoustics is presented. The discussion of holographic signal processing is focused on solving the problem of monitoring the underwater environment, ensuring the detection, resolution, and localization of underwater noise sources under conditions of low signal-to-noise ratio and spatiotemporal perturbations in the oceanic environment. Localization of the sound source is understood as determining the bearing, radial velocity, range, and depth. Single vector–scalar receivers and linear antenna arrays are considered as the receiving modules. The results of theoretical studies, numerical modeling, and field experiments are provided, allowing for assessment of the efficiency of holographic processing under realistic conditions.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 1","pages":"80 - 100"},"PeriodicalIF":1.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental study of a Broadband Active Noise Control Algorithm with Fast Adaptation in the Frequency Domain 频域快速自适应宽带有源噪声控制算法的实验研究
IF 1.2 4区 物理与天体物理
Acoustical Physics Pub Date : 2025-05-21 DOI: 10.1134/S1063771024602693
A. V. Lvov, V. A. Karaseva, A. A. Rodionov, A. G. Okunev
{"title":"Experimental study of a Broadband Active Noise Control Algorithm with Fast Adaptation in the Frequency Domain","authors":"A. V. Lvov,&nbsp;V. A. Karaseva,&nbsp;A. A. Rodionov,&nbsp;A. G. Okunev","doi":"10.1134/S1063771024602693","DOIUrl":"10.1134/S1063771024602693","url":null,"abstract":"<div><p>The article proposes a method for constructing an active cancellation system based on an algorithm with a block adaptation procedure in the frequency domain. The proposed method has a high convergence rate and can be implemented on a general-purpose computer. The results of simulation modeling and experimental study of the efficiency of the proposed active cancellation system on the created setup are presented. It is shown that using this method for constructing an active noise control system, a suppression level up to 20 dB can be achieved on the experimental setup and up to 28 dB in the simulation model. Special attention is paid to the architecture of the experimental setup and software used.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 1","pages":"120 - 127"},"PeriodicalIF":1.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Estimation of the Coefficient of Sound Reflection from the Bottom Based on an Analysis of the Spatial-Angular Field Structure 基于空间角场结构分析的底部声反射系数估算
IF 1.2 4区 物理与天体物理
Acoustical Physics Pub Date : 2025-05-21 DOI: 10.1134/S1063771024602243
A. L. Virovlyansky, A. Yu. Kazarova
{"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,&nbsp;A. Yu. Kazarova","doi":"10.1134/S1063771024602243","DOIUrl":"10.1134/S1063771024602243","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":1.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Use of Rayleigh Wave Dispersion to Localize a Source 使用瑞利波色散来定位源
IF 1.2 4区 物理与天体物理
Acoustical Physics Pub Date : 2025-05-21 DOI: 10.1134/S1063771024602280
A. V. Lebedev, S. A. Manakov, D. V. Dubovoy
{"title":"Use of Rayleigh Wave Dispersion to Localize a Source","authors":"A. V. Lebedev,&nbsp;S. A. Manakov,&nbsp;D. V. Dubovoy","doi":"10.1134/S1063771024602280","DOIUrl":"10.1134/S1063771024602280","url":null,"abstract":"<div><p>The possibility of using Rayleigh wave dispersion to localize a source of seismoacoustic radiation is investigated. Compensation for dispersion distortion is at the heart of the well-known methods of wavefront reversal or time reversal methods. A specific feature of the article is the use of the dispersion dependence, which is measured during seismoacoustic signal recording, with subsequent processing of the data obtained. An example of such processing is presented for data recorded in a field experiment. The results indicate the prospects of developing the data interpretation method for seismoacoustic remote diagnostics of natural environments, e.g., for the search and localization of different types of inclusions.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 1","pages":"112 - 119"},"PeriodicalIF":1.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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