Log in

Relevant bibliographies by topics / Hydroacoustic signal / Journal articles

To see the other types of publications on this topic, follow the link: Hydroacoustic signal.

Journal articles on the topic 'Hydroacoustic signal'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Hydroacoustic signal.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Luo, Yu, Chaoqian Fu, Dongdong Peng, Haotian Wang, Yingshuo Yao, and Lulu Yan. "Design and DSP implementation of signal processing module for underwater acoustic transponder." Journal of Physics: Conference Series 2863, no. 1 (2024): 012026. http://dx.doi.org/10.1088/1742-6596/2863/1/012026.

Full text

Abstract:

Abstract Due to the fact that sound waves are the most effective carrier for underwater information transmission, the detection of underwater acoustic signals has become a key link in optimizing the performance of transponders in underwater positioning systems. In this paper, the signal processing module of the hydroacoustic transponder is designed to address the problem of low detection accuracy of the transponder due to the propagation deformation of hydroacoustic signals in hydroacoustic channels. The module uses the TMS320C6748 processor to achieve the transmission, acquisition, and detect

APA, Harvard, Vancouver, ISO, and other styles

2

Tarasov, Sergei, Petr Pivnev, Wenjian Chen, and Dmitry Durov. "Nonlinear acoustics methods in the investigations of elastic wave interactions in the ocean." E3S Web of Conferences 127 (2019): 02017. http://dx.doi.org/10.1051/e3sconf/201912702017.

Full text

Abstract:

Hydroacoustic parametric systems and methods of nonlinear acoustics in the investigation of the Ocean and the Arctic shelf are considered. A short description of the most promising directions of development of hydroacoustic systems with parametric radiating antennas is given. Characteristics of parametric devices are given, and the results of their applications to solve various problems of hydroacoustics are considered. We discuss new opportunities, which appear when applying parametric antennas, to illuminate underwater environment by autonomous underwater vehicles, and to ensure their naviga

APA, Harvard, Vancouver, ISO, and other styles

3

Павликов, С. Н., Е. Ю. Копаева, Ю. Ю. Колесов, П. Н. Петров, and А. Н. Крючков. "Hydroacoustic communication method." MORSKIE INTELLEKTUAL`NYE TEHNOLOGII)</msg>, no. 1(55) (March 3, 2022): 208–14. http://dx.doi.org/10.37220/mit.2022.55.1.028.

Full text

Abstract:

Развитие инфокоммуникационных систем требует повышения эффективности использования акустических методов. Однако, совершенствование гидроакустической связи связано с высокой нелинейностью и нестационарностью канала. Происходят раскоорреляция сигнала за счет трансформации в пространстве и во времени. Приемник не видит ожидаемого сигнала с заданными параметрами. Морских интеллектуальных систем кроме радиоволн могут и должны использовать гидроакустические сигналы. В работе предлагается новый способ гидроакустической связи, учитывающий высокие требования к мобильности и пропускной способности инфок

APA, Harvard, Vancouver, ISO, and other styles

4

Kasatkin, B. A., N. V. Zlobina, S. B. Kasatkin, and G. V. Kosarev. "Spectral-Correlation Signal Processing in the Infrasonic Frequency Range." IOP Conference Series: Earth and Environmental Science 988, no. 3 (2022): 032065. http://dx.doi.org/10.1088/1755-1315/988/3/032065.

Full text

Abstract:

Abstract The article discusses hydroacoustic receiving systems, consisting of combined receivers, and the processing of the received hydroacoustic signals. Each module of the sonar system has four channels for receiving information. Spectral processing was carried out using sixteen information parameters, which made it possible to achieve the maximum noise immunity of the receiving system. Correlation processing of signals confirmed the high correlation of signals on the elements of the receiving hydroacoustic system.

APA, Harvard, Vancouver, ISO, and other styles

5

Zhang, Jing, Liyuan Lin, and Rui Zhang. "Spectrum-Weighted Fusion Cooperative Detection Algorithm Based on Double Thresholds for Underwater Acoustic Networks." Sensors 23, no. 16 (2023): 7074. http://dx.doi.org/10.3390/s23167074.

Full text

Abstract:

Spectrum-sensing technology is crucial for the development of underwater acoustic communication networks and plays a key role in detecting spectrum holes and channel occupancy. Energy detection technology, as the fundamental spectrum sensing technology in cognitive radio, has reached a mature level of development. Its application in hydroacoustic communications can significantly enhance the utilization of the hydroacoustic spectrum. However, due to the complexity of the hydroacoustic channel compared with that of the radio channel, the traditional double-threshold energy detection technique fa

APA, Harvard, Vancouver, ISO, and other styles

6

Nejevenko, E. S., and A. A. Sotnikov. "Adaptive modeling for hydroacoustic signal processing." Pattern Recognition and Image Analysis 16, no. 1 (2006): 5–8. http://dx.doi.org/10.1134/s1054661806010020.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Lin, Xu, Ruichun Dong, and Zhichao Lv. "Deep Learning-Based Classification of Raw Hydroacoustic Signal: A Review." Journal of Marine Science and Engineering 11, no. 1 (2022): 3. http://dx.doi.org/10.3390/jmse11010003.

Full text

Abstract:

Underwater target recognition is a research component that is crucial to realizing crewless underwater detection missions and has significant prospects in both civil and military applications. This paper provides a comprehensive description of the current stage of deep-learning methods with respect to raw hydroacoustic data classification, focusing mainly on the variety and recognition of vessels and environmental noise from raw hydroacoustic data. This work not only aims to describe the latest research progress in this field but also summarizes three main elements of the current stage of deve

APA, Harvard, Vancouver, ISO, and other styles

8

Zamarenova, L. N., E. V. Kotel'nikova, and M. I. Skipa. "Energy loss model for hydroacoustic information offshore nets." Electronics and Communications 16, no. 5 (2012): 70–74. http://dx.doi.org/10.20535/2312-1807.2011.16.5.247754.

Full text

Abstract:

The power loss model when the signals propagating in the information network hydroacoustic channel on the shelf is considered. The experimental signal propagation power loss data are described by the trend approximated using the functions of the exponential and polynomial type. It is shown that in the case of the signal propagation in the bottom sound channel the trend is described by this approximating functions with the confidence no less than 0,9

APA, Harvard, Vancouver, ISO, and other styles

9

Czapiewska, Agnieszka, Andrzej Luksza, Ryszard Studanski, and Andrzej Zak. "Reduction of the Multipath Propagation Effect in a Hydroacoustic Channel Using Filtration in Cepstrum." Sensors 20, no. 3 (2020): 751. http://dx.doi.org/10.3390/s20030751.

Full text

Abstract:

During data transmission in a hydroacoustic channel, one of the problems is the multipath propagation effect, which leads to a decrease in the transmission parameters and sometimes completely prevents it. Therefore, we have attempted to develop a method, which is based on a recorded hydroacoustic signal, that allows us to recreate the original (generated) signal by eliminating the multipath effect. In our method, we use cepstral analysis to eliminate replicas of the generated signal. The method has been tested in simulation and during measurements in a real environment. Additionally, the influ

APA, Harvard, Vancouver, ISO, and other styles

10

Lillis, Ilse Van, and Olaf Boebel. "Marine soundscape planning: Seeking acoustic niches for anthropogenic sound." Journal of Ecoacoustics 2, no. 1 (2018): 1. http://dx.doi.org/10.22261/jea.5gsnt8.

Full text

Abstract:

Both marine mammals and hydroacoustic instruments employ underwater sound to communicate, navigate or infer information about the marine environment. Concurrent timing of acoustic activities using similar frequency regimes may result in (potentially mutual) interference of acoustic signals when both sources are within audible range of the recipient. While marine mammal fitness might be negatively impacted upon, both on individual and population level, hydroacoustic studies may generate low quality data or suffer data loss as a result of bioacoustic interference. This article pursues, in analog

APA, Harvard, Vancouver, ISO, and other styles

11

Tugbaeva, A. S., A. G. Itskov, V. N. Milich, and V. A. Shirokov. "Underwater Object Identification by Means of Reflected Sonar Signals." Intellekt. Sist. Proizv. 21, no. 4 (2023): 31–41. http://dx.doi.org/10.22213/2410-9304-2023-4-31-41.

Full text

Abstract:

The paper presents the research results of the underwater object identification method on the basis of periodogram analysis of hydroacoustic signals reflected from them with the application of voting algorithm. The identification of an object in the article means making a decision to distinguish it from other objects. Hydroacoustic signals are the main means of obtaining information about the underwater environment, they are also widely used to detect and identify underwater objects, including ships, submarines and underwater structures. The identification of underwater objects is an important

APA, Harvard, Vancouver, ISO, and other styles

12

Dolgikh, Grigory, Mikhail Bolsunovskii, Sergey Budrin, et al. "Transformation of Hydroacoustic Energy into Seismoacoustic Energy at 22 Hz in Medium Depth- and Deep-Sea Conditions." Applied Sciences 15, no. 1 (2024): 267. https://doi.org/10.3390/app15010267.

Full text

Abstract:

This work is devoted to an experiment studying the regularities of the propagation of hydroacoustic low-frequency signals in the conditions of the sea at intermediate depth and deep in terms of their transformation into vibrations in the upper layer of the Earth’s crust. This experiment belongs to the field of acoustic tomography and is aimed at solving the problems of non-contact methods for studying the geological structure of the shelf areas of the World Ocean. The novelty and uniqueness of the work lies in the use of a harmonic low-frequency hydroacoustic signal with a frequency of 22 Hz o

APA, Harvard, Vancouver, ISO, and other styles

13

Tugbaeva, A. S., A. G. Itskov, V. N. Milich, and V. A. Shirokov. "Method for recognizing underwater objects by reflected hydroacoustic signals." Himičeskaâ fizika i mezoskopiâ 27, no. 1 (2025): 62–74. https://doi.org/10.62669/17270227.2025.1.7.

Full text

Abstract:

To solve problems related to the detection, coordination and recognition of underwater objects, hydroacoustic methods are mainly used to obtain information about the underwater environment. The article presents the results of the research of the identification algorithms for underwater objects based on the analysis of hydroacoustic signals reflected from them. As a basis for the analysis of signals reflected from underwater objects it is proposed to use the methods of periodogram analysis, which allow to identify the main frequency and time components in the signal and to distinguish these ref

APA, Harvard, Vancouver, ISO, and other styles

14

Kaplun, Dmitry, Alexander Voznesensky, Sergei Romanov, Valery Andreev, and Denis Butusov. "Classification of Hydroacoustic Signals Based on Harmonic Wavelets and a Deep Learning Artificial Intelligence System." Applied Sciences 10, no. 9 (2020): 3097. http://dx.doi.org/10.3390/app10093097.

Full text

Abstract:

This paper considers two approaches to hydroacoustic signal classification, taking the sounds made by whales as an example: a method based on harmonic wavelets and a technique involving deep learning neural networks. The study deals with the classification of hydroacoustic signals using coefficients of the harmonic wavelet transform (fast computation), short-time Fourier transform (spectrogram) and Fourier transform using a kNN-algorithm. Classification quality metrics (precision, recall and accuracy) are given for different signal-to-noise ratios. ROC curves were also obtained. The use of the

APA, Harvard, Vancouver, ISO, and other styles

15

Rodionov, A. Yu, L. G. Statsenko, A. A. Chusov, D. A. Kuzin, and M. M. Smirnova. "Analysis of the Effectiveness of Multifrequency OFDM Systems with a Constant Envelope in a Hydroacoustic Simulator and During In Situ Tests." Acoustics 6, no. 4 (2024): 1140–53. https://doi.org/10.3390/acoustics6040062.

Full text

Abstract:

The key elements in the operation of modern underwater robotic systems are hydroacoustic communication and navigation systems. Hydroacoustic data transmission channels are designed in such a way that the transmitted information signals must be resistant to various types of interference and distortion, even without preliminary estimates of the channel parameters, due to their significant non-stationarity because of the roughness of the sea surface, currents, and the movement of underwater vehicles. Furthermore, due to the high mobility of underwater vehicles, the transmission time of navigation

APA, Harvard, Vancouver, ISO, and other styles

16

Chupin, V. A., G. I. Dolgikh, S. G. Dolgikh, et al. "Registration and localization of a hydroacoustic source by a coastal measuring complex." Podvodnye issledovaniia i robototehnika, no. 2 (June 28, 2024): 4–11. http://dx.doi.org/10.37102/1992-4429_2024_48_02_01.

Full text

Abstract:

The actual problem of the presented research is to study the peculiarities of acoustic signal transformation at the geosphere boundary in the “water-land” transition zone. The signal energy of a moving hydroacoustic radiation source is transformed in the coastal zone into seismoacoustic oscillations recorded by a coastal two-coordinate laser deformograph. The spatial position of the measuring components of the laser deformograph makes it possible to localize the displacement of an object in the nearby water area based on the study of variations in the amplitude of the recorded signal. The meth

APA, Harvard, Vancouver, ISO, and other styles

17

Budrin, Sergey, Grigory Dolgikh, Vladimir Chupin, and Stanislav Dolgikh. "Some Peculiarities of Low-Frequency Hydroacoustic Signals Behavior in Tomographic Studies of “Sea-Land-Sea” System." Journal of Marine Science and Engineering 10, no. 10 (2022): 1550. http://dx.doi.org/10.3390/jmse10101550.

Full text

Abstract:

In this paper, we analyzed the results of experimental data processing in the study of regularities of propagation and transformation of low-frequency harmonic signals at the boundary of the “sea−land−sea” system. Harmonic signals at a carrier frequency of 33 Hz were generated by a low-frequency hydroacoustic radiator in Vityaz Bay. Then, they passed along the shelf of decreasing depth, transformed into seismoacoustic signals of the upper layer of the Earth’s crust and the bedrocks of Shultz Cape and excited hydroacoustic signals at the corresponding frequency in the shelf waters in the open p

APA, Harvard, Vancouver, ISO, and other styles

18

Koltakov, S. A., and A. A. Cherepnev. "HARDWARE-SOFTWARE COMPLEX FOR DIGITAL PROCESSING OF HYDROACOUSTIC SIGNALS." Issues of radio electronics, no. 5 (June 8, 2019): 60–63. http://dx.doi.org/10.21778/2218-5453-2019-5-60-63.

Full text

Abstract:

The article describes the hardware‑software complex (HSC) based on the debugging stand, its composition, modules and operations. A method for synthesizing the output signal is described, a formula and a table of parameters for its calculation are given. Signals and spectra at the input and output of the developed HSC are shown. The obtained parameters of the performance of various agribusiness, based on the signal processor with a General‑purpose processor and two variants with General‑purpose processors. The proposed version of the HSC2–3 times wins in performance compared to the HSC based on

APA, Harvard, Vancouver, ISO, and other styles

19

Kuznetsov, Mikhail Yu, and Yury A. Kuznetsov. "Hydroacoustic methods and tools for fish stock assessment and fishery maintenance Part 2. Methods and tools of fishery biohydroacoustics." Izvestiya TINRO 184, no. 1 (2016): 264–94. http://dx.doi.org/10.26428/1606-9919-2016-184-264-294.

Full text

Abstract:

Studies on influence of hydroacoustic fields on behaviour of commercial species and using of hydroacoustic tools for management of fish and squids behavior to increase the fishing efficiency are overviewed. The methods and means of fisheries biohydroacoustics are considered critically and the reasons of their unsatisfactory using in fishery are analyzed. Sounds with a certain spectrum and level are still applied for influence on fish behaviour without sufficient scientific and technical substantiation, so a complex approach to development of effective hydroacoustic tools for remote control of

APA, Harvard, Vancouver, ISO, and other styles

20

Burenin, A. V., and V. V. Didenko. "Estimation of the doppler shift by complex signals in a hydroacoustic waveguide." Podvodnye issledovaniia i robototehnika, no. 1 (March 29, 2024): 19–30. http://dx.doi.org/10.37102/1992-4429_2024_47_01_02.

Full text

Abstract:

This paper presents a technique for estimating the Doppler frequency shift of the probing signal. The technique is based on the use of a signal packet consisting of at least two identical complex signals with “good” autocorrelation properties, and the operation of autocorrelation (“convolution” of the received signal with itself) at the receiver. The results of experimental testing of the technique, carried out on August 17, 2013, are presented. The obtained field data are compared with GPS measurements and algorithms for estimating the Doppler shift.

APA, Harvard, Vancouver, ISO, and other styles

21

Zhao, Haotian, and Maofa Wang. "CEEMDAN-SVD Motor Noise Reduction Method and Application Based on Underwater Glider Noise Characteristics." Symmetry 17, no. 3 (2025): 378. https://doi.org/10.3390/sym17030378.

Full text

Abstract:

When utilizing underwater gliders to observe submerged targets, ensuring the quality and reliability of the acquired target characteristic signals is paramount. However, the signal acquisition process is significantly compromised by noise generated from various motors on the platform, which severely contaminates the authentic target signal characteristics, thereby complicating subsequent research efforts such as target identification. Given the limited capability of wavelet transforms in processing complex non-stationary signals, and considering the non-stationary and non-linear nature of the

APA, Harvard, Vancouver, ISO, and other styles

22

Rose, G. A., and W. C. Leggett. "Hydroacoustic Signal Classification of Fish Schools by Species." Canadian Journal of Fisheries and Aquatic Sciences 45, no. 4 (1988): 597–604. http://dx.doi.org/10.1139/f88-073.

Full text

Abstract:

Features extracted from hydroacoustic backscatter from fish schools enabled classification by species. Target species were cod (Gadus morhua), capelin (Mallotus villosus), and mackerel (Scomber scombrus), observed in the northern Gulf of St. Lawrence during 1985–86. Two features of internal school density (20 log R amplification) were the best discriminators. These were mean standardized peak to trough distance (SPT) and mean distance between voltage peaks (PP). Quadratic discriminant functions based on the variables SPT, PP, an inverse coefficient of variation, school depth, and off-bottom di

APA, Harvard, Vancouver, ISO, and other styles

23

Lubis, Muhammad Zainuddin, Ganda Surya, Kasih Anggraini, and Husnul Kausarian. "PENERAPAN TEKNOLOGI HIDROAKUSTIK DI BIDANG ILMU DAN TEKNOLOGI KELAUTAN." OSEANA 42, no. 2 (2019): 34–44. http://dx.doi.org/10.14203/oseana.2017.vol.42no.2.45.

Full text

Abstract:

APPLICATION OF FIELD HYDROACOUSTIC TECHNOLOGY FOR MARINE SCIENCE AND TECHNOLOGY Utilization hydroacoustic methods in recent years have become increasingly effective for estimating the abundance of marine fish, especially fish stocks, where is impossible to do with conventional methods approach. Widely hydroacoustic technology has been used to map and classify the content of the resource base of waters and benthic animals that are on the bottom, type of substrate and benthic biota. Target Strength (TS) is the most important factor in the detection and prediction of fish stocks by using hydroaco

APA, Harvard, Vancouver, ISO, and other styles

24

Deng, Lize, Jiajia Liang, Xueyuan Huang, et al. "Cross air–water interface hydroacoustic signal detection based on laser speckle imaging." Chinese Optics Letters 23, no. 7 (2025): 071201. https://doi.org/10.3788/col202523.071201.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Shirokov, V. A., and V. N. Milich. "Experimental Complex for Studying the Possibilities of Using Hydroacoustic Sensors in Underwater Vision Systems." Vestnik IzhGTU imeni M.T. Kalashnikova 24, no. 4 (2021): 54–64. http://dx.doi.org/10.22213/2413-1172-2021-4-54-64.

Full text

Abstract:

A description of a laboratory experimental and measuring complex is given, including a linear aquatic environment in the form of an extended cylindrical reservoir (hydro wave) and an experimental pool equipped with a system for generating test hydroacoustic signals, a set of electroacoustic and acoustoelectric transducers, and a system for amplifying and digitizing received signals. The results of experimental studies of hydroacoustic piezoelectric sensors and the features of the propagation of the waves generated by them in the described laboratory complex are presented. These results include

APA, Harvard, Vancouver, ISO, and other styles

26

Kebkal, Konstantin, Aleksey Kabanov, Oleg Kramar, et al. "Practical Steps towards Establishing an Underwater Acoustic Network in the Context of the Marine Internet of Things." Applied Sciences 14, no. 8 (2024): 3527. http://dx.doi.org/10.3390/app14083527.

Full text

Abstract:

When several hydroacoustic modems operate simultaneously in an area of mutual coverage, collisions of data packets received from several sources may occur, which lead to information loss. With an increase in the number of simultaneously operating hydroacoustic modems, physical layer algorithms do not provide stable data transmission and the likelihood of collisions increases, which makes the operation of modems ineffective. To ensure effective operation in a hydroacoustic signal propagation environment and to reduce collisions when exchanging data between two modems that do not have the abilit

APA, Harvard, Vancouver, ISO, and other styles

27

Piskur, Pawel, and Marek Gasiorowski. "Digital Signal Processing for Hydroacoustic System in Biomimetic Underwater Vehicle." Naše more 67, no. 1 (2020): 14–18. http://dx.doi.org/10.17818/nm/2020/1.3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Arsent’Ev, V., and G. Krivolapov. "Hydroacoustic phase direction finder with amplitude-modulated navigation signal." Herald of the Siberian State University of Telecommunications and Informatics, no. 2 (June 18, 2021): 14–26. http://dx.doi.org/10.55648/1998-6920-2021-15-2-14-26.

Full text

Abstract:

We consider a phase direction finder with an ultrashort base and the use of an amplitude-modulated navigation signal. It has advanced functionality in positioning systems for underwater objects placed on various surface and underwater carriers.

APA, Harvard, Vancouver, ISO, and other styles

29

Shakhtarin, B. I., K. A. Balakhonov, and K. S. Kalashnikov. "OFDM Signal Synchronization Algorithm in the Multipath Hydroacoustic Channel." Journal of Communications Technology and Electronics 63, no. 4 (2018): 354–60. http://dx.doi.org/10.1134/s1064226918040113.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Zhou, Yubin, Yuexia Zhao, Chengbing Song, Jiancun Wang, Weikun Xu, and Zhengguang Li. "GA-BP-Based Low-Noise FBG Hydroacoustic Monitoring System with Reference Sensor." Sensors 24, no. 17 (2024): 5733. http://dx.doi.org/10.3390/s24175733.

Full text

Abstract:

To address the issue of harsh marine background noise impacting the monitoring signal of fiber-optic hydrophones, we propose a low-noise fiber Bragg grating (FBG) hydroacoustic monitoring system with a reference sensor based on genetic algorithm backpropagation (GA-BP). Through theoretical analysis, we deduce the noise suppression steps of the GA-BP algorithm based on the reference sensor and construct train and test sets based on the data from the reference sensor and monitoring sensor at different times, optimizing the GA-BP algorithm to find the best fitting results and thereby obtaining th

APA, Harvard, Vancouver, ISO, and other styles

31

Kosteev, Dmitry A., Alexey V. Ermoshkin, Vera I. Kalinina, and Mikhail B. Salin. "An Investigation of Reverberation Received by a Vertical Antenna at Short Ranges in Shallow Seas." Journal of Marine Science and Engineering 13, no. 6 (2025): 1122. https://doi.org/10.3390/jmse13061122.

Full text

Abstract:

In this paper, we discuss the results of hydroacoustic sounding in the frequency range of units of kHz, conducted during voyage No. 90 of the research vessel “Akademik Mstislav Keldysh”. The employment of a vertical antenna array and electronic phasing to the recorded data made it possible to determine both the reflection coefficient from the bottom at incidence close to normal, and the diffuse scattering coefficients at oblique angles for the surface and the bottom. Based on the processing of experimental data, and with the help of computer modeling, an analysis of the structure of hydroacous

APA, Harvard, Vancouver, ISO, and other styles

32

Kuz'kin, Venedikt M., Sergey A. Pereselkov, Yuri V. Matvienko, Vladimir I. Grachev, Sergey A. Tkachenko, and Nadezhda P. Stadnaya. "Holographic processing of hydroacoustic information using linear antennas." Radioelectronics. Nanosystems. Information Technologies. 15, no. 2 (2023): 169–78. http://dx.doi.org/10.17725/rensit.2023.15.169.

Full text

Abstract:

The formation of an interferogram and a hologram of a moving underwater noise source using linear antennas is considered. The relationship between the spectral density of the hologram and the aperture and the angular dependence of the received field is derived. Antenna gain has been estimated. The issue of the limiting signal-to-noise ratio at which the holographic processing remains operational is discussed. An analytical expression is obtained that establishes a relationship between the signal/noise ratios at the output and input of the antenna. Conditions are formulated under which the inte

APA, Harvard, Vancouver, ISO, and other styles

33

Parkhomenko, Yevhen, Halyna Lastivka, and Oleksandr Lastivka. "Prospects for the Application of Wavelet Analysis in the Problems of Classification of Hydroacoustic Signals." Security of Infocommunication Systems and Internet of Things 2, no. 2 (2024): 02002. https://doi.org/10.31861/sisiot2024.2.02002.

Full text

Abstract:

Wavelet transformation is widely used for signal analysis, which, unlike the classical Fourier transform, make it possible to simultaneously detect low-frequency and high-frequency characteristics of signals on different time scales (i.e., it is feasible to examine how the frequency spectrum of signals varies over time). The theory of wavelet transformation relies on the concept of multi-scale analysis, which involves examining the signal at various frequencies and resolutions. At the same time, it increases the flexibility of signal processing methods and expands the scope of their applicatio

APA, Harvard, Vancouver, ISO, and other styles

34

Alekseev, G. G., E. A. Alekseeva, P. V. Galagan, A. P. Sorokin, and S. А. Sorokin. "METHODS FOR IMPLEMENTING NEURAL NETWORK HYDROACOUSTICS ALGORITHMS BASED ON HETEROGENEOUS HARDWARE PLATFORM GRIFON." Issues of radio electronics, no. 5 (June 8, 2019): 48–59. http://dx.doi.org/10.21778/2218-5453-2019-5-48-59.

Full text

Abstract:

Recently, there has been an increase of interest in creating new neural network hydroacoustics algorithms, for example, test sites in the Arctic are being created to evaluate the effectiveness of target detection and to ensure the safety of the Canadian North. The open architecture allows you to adapt hardware to new threats or economic interests. Not only the equipment of radiation and reception of hydroacoustic systems is improved, but also their processing. The article discusses the ways of improvement and the principles of building specialized computers based on the GRIFON hardware platfor

APA, Harvard, Vancouver, ISO, and other styles

35

Yan, Huichao, and Linmei Zhang. "Denoising of MEMS Vector Hydrophone Signal Based on Empirical Model Wavelet Method." Proceedings 15, no. 1 (2019): 11. http://dx.doi.org/10.3390/proceedings2019015011.

Full text

Abstract:

Underwater acoustic technology is a major method in current ocean research and exploration, which support the detection of seabed environment and marine life. However, the detection accuracy is directly affected by the quality of underwater acoustic signals collected by hydrophones. Hydrophones are efficient and important tools for collecting underwater acoustic signals. The collected signals of hydrophone often contain lots kinds of noise as the work environment is unknown and complex. Traditional signal denoising methods, such as wavelet analysis and empirical mode decomposition, product uns

APA, Harvard, Vancouver, ISO, and other styles

36

Xing, Chuanxi, Guangzhi Tan, Qiang Meng, Yanling Ran, and Mao Lu. "Off-grid hydroacoustic signal orientation estimation based on interpolation and subspace fitting in coprime arrays." PLOS ONE 19, no. 11 (2024): e0310415. http://dx.doi.org/10.1371/journal.pone.0310415.

Full text

Abstract:

This letter presents a novel approach to sparse Bayesian underwater acoustic signal direction estimation. The proposed method incorporates interpolation of the coprime array and signal subspace fitting. It addresses the limitations of the hydrophone coprime array in utilizing all array elements’ information and mitigates the interference of ocean noise in shallow waters, which impairs the accuracy and resolution of target direction estimation. Firstly, the hydroacoustic signals are received using a coprime array, then the missing information is filled by interpolating the virtual array element

APA, Harvard, Vancouver, ISO, and other styles

37

Filippov, B. I. "THE CHOICE OF SIGNAL SEPARATION METHOD IN HYDROACOUSTIC CONTROL CHANNEL." Vestnik of Ryazan State Radio Engineering University 66-1 (2018): 29–34. http://dx.doi.org/10.21667/1995-4565-2018-66-4-1-29-34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Kuz'kin, Venedikt M., Sergey A. Pereselkov, Yury V. Matvienko, Sergey A. Tkachenko, and Dmitry Yu Prosovetskii. "Noise signal detection by horizontal antenna in ocean waveguide." Radioelectronics. Nanosystems. Information Technologies. 14, no. 1 (2022): 65–72. http://dx.doi.org/10.17725/rensit.2022.14.065.

Full text

Abstract:

Interferometric processing of hydroacoustic information by using a horizontal linear antenna is described. The detection of a noise source signal is considered by using the Neumann-Pearson criterion. The expressions for the probability of correct detection and false alarm are obtained as dependence on the signal/noise (s/n) ratio and the number of antenna elements. Numerical calculations are performed. The curves of the probability of noise signal detection are given. The efficiency of signal detection by using an antenna in relation to a single receiver is estimated.

APA, Harvard, Vancouver, ISO, and other styles

39

Vagin, A. V., and A. S. Vorotyntseva. "Hydroacoustic Bottom Soil Profiling Device with Synthetic Aperture." Journal of the Russian Universities. Radioelectronics 26, no. 1 (2023): 78–86. http://dx.doi.org/10.32603/1993-8985-2023-26-1-78-86.

Full text

Abstract:

Introduction. Acoustic profiling is a conventional method for studying the geological structure of the seabed. To this end, a low-frequency acoustic profiler with an operating frequency range of 1…14 kHz can be used. However, under lower operating frequencies, the difficulty of achieving the required resolution arises. The problem of improving the angular resolution of a hydroacoustic device, particularly in the direction of the carrier movement, remains to be a priority task in the search and detection of objects on the seabed, as well as the study of the bottom soil structure. Angular resolu

APA, Harvard, Vancouver, ISO, and other styles

40

Summerfelt, Steven T., Kyle H. Holland, Joseph A. Hankins, and Martin D. Durant. "A hydroacoustic waste feed controller for tank systems." Water Science and Technology 31, no. 10 (1995): 123–29. http://dx.doi.org/10.2166/wst.1995.0368.

Full text

Abstract:

The objective of this work was to develop a commercially viable method to reduce waste feed and thus improve production efficiency and reduce discharge of solids and nutrients within tank based aquaculture systems. We developed and custom fabricated a feeding controller which uses ultrasound to detect uneaten feed and controls feeding events based upon appetite satiation as measured by the quantity of waste feed detected. During feeding, the developed device functions as a combination ultrasonic detector, feedback controller, and interval timer. The device functions as a feedback controller by

APA, Harvard, Vancouver, ISO, and other styles

41

Gavriliev, S. A., and M. V. Ivanov. "A Method of Analysis of Independent Components for Hydro-Acoustic Control of the Flotation Process." Voprosy sovremennoj nauki i praktiki. Universitet imeni V.I. Vernadskogo, no. 1(83) (2022): 019–26. http://dx.doi.org/10.17277/voprosy.2022.01.pp.019-026.

Full text

Abstract:

The application of algorithms for the analysis of independent components together with a hydroacoustic method for determining the disperse composition of the gas phase in water is proposed. Mathematical modeling of the effect of emission of acoustic waves by bubbles demonstrated the principle of blind separation of the measured signals into components and the possibility of determining the size distribution of air bubbles without taking into account the geometry of the relative position of the flow of bubbles and measuring points. It is proposed to use signal spectra, rather than temporal sign

APA, Harvard, Vancouver, ISO, and other styles

42

Yuan, Jian, Guang Hu Jin, Jun Li Liu, and Zhong Hai Zhou. "A Hydroacoustic Transponder Based on the Principle of Laser Interferometry." Applied Mechanics and Materials 602-605 (August 2014): 2545–48. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.2545.

Full text

Abstract:

The hydroacoustic transponder based on the principle of laser interferometry is investigated, which consists of three parts: 1) the front-end module, which is a signal receiving and pre-processing module, and consists of a laser interferometric receiver and a filter group; 2) the signal processing module, which consists of the data acquisition module and a data processing system; 3) the back-pulse module, which consists of an automatic gain adjustment module, a transmitter module and a back-transducer. We give the detailed designing flow charts of the hardware and software programs.

APA, Harvard, Vancouver, ISO, and other styles

43

Rodionov, A. A., D. A. Nikitin, K. B. Filin, N. N. Shpilev, and E. D. Panicheva. "Hydroacoustic water tank of St. Petersburg Branch of Shirshov Institute of Oceanology of Russian Academy of Sciences." Fundamental and Applied Hydrophysics 17, no. 4 (2025): 109–21. https://doi.org/10.59887/2073-6673.2024.17(4)-9.

Full text

Abstract:

St. Petersburg Branch of Shirshov Institute of Оceanology of Russian Academy of Sciences has constructed and commissioned an acoustically isolated water tank, equipped with an automated system for securing and moving measuring emitters, receivers (hydrophones), and the objects under study. The tank’s equipment includes emitters, hydrophones, multifunctional echosounders with side-scan sonar capabilities, amplifiers for both emitting and receiving channels, analog-to-digital converters, and portable computers with software for generating emitting and recording receiving signals. Functional mode

APA, Harvard, Vancouver, ISO, and other styles

44

Misiurewicz, Jacek, Konrad Bruliński, Wiesław Klembowski, Krzysztof Stefan Kulpa, and Jan Pietrusiewicz. "Multipath Propagation of Acoustic Signal in a Swimming Pool—Source Localization Problem." Sensors 22, no. 3 (2022): 1162. http://dx.doi.org/10.3390/s22031162.

Full text

Abstract:

This paper explores the problem of severe multipath propagation of underwater acoustic signals in a swimming pool. The problem appeared in a study that examined a system used to signal emergency situations (i.e., pre-drowning symptoms detected by a wearable device on a pool user’s wrist) and locate the signal source. A swimming pool acoustic environment is characterized by the presence of large flat reflecting planes surrounding a small volume of water. The reflections are numerous and much stronger than in typical hydroacoustic applications. In this paper, we attempted to create a model of th

APA, Harvard, Vancouver, ISO, and other styles

45

Filippov, Boris I. "DETERMINATION OF CHARACTERISTICS OF UNDERWATER AUTONOMOUS APPARATUS TRANSITORY TO THE DOCKING MODULE FOR HNS WITH ULTRASHORT BASE." T-Comm 15, no. 2 (2021): 11–19. http://dx.doi.org/10.36724/2072-8735-2021-15-2-11-19.

Full text

Abstract:

The expediency of creation of the apparatus of the high-frequency hydroacoustic system of transformation in the form of the jointed information and navigation system combined on base of antennas of system in which hydroacoustic navigation systems with ultrashort base can be used is reasonable; it is offered to use signals of data which the docking module and autonomous underwater apparatus exchange by results of measurement of mutual navigation characteristics as navigation. In a point of reception signals are observed reflected from a bottom and surface in the presence of reflecting surfaces

APA, Harvard, Vancouver, ISO, and other styles

46

Piskur, Pawel, Piotr Szymak, Krzysztof Jaskólski, Leszek Flis, and Marek Gąsiorowski. "Hydroacoustic System in a Biomimetic Underwater Vehicle to Avoid Collision with Vessels with Low-Speed Propellers in a Controlled Environment." Sensors 20, no. 4 (2020): 968. http://dx.doi.org/10.3390/s20040968.

Full text

Abstract:

In this paper, a hydroacoustic system designed for a biomimetic underwater vehicle (BUV) is presented. The Biomimetic Underwater Vehicle No. 2 (BUV2) is a next-generation BUV built within the ambit of SABUVIS, a European Defense Agency project (category B). Our main efforts were devoted to designing the system so that it will avoid collisions with vessels with low-speed propellers, e.g., submarines. Verification measurements were taken in a lake using a propeller-driven pontoon with a spectrum similar to that produced by a submarine propulsion system. Here, we describe the hydroacoustic signal

APA, Harvard, Vancouver, ISO, and other styles

47

Шостак, С. В., А. В. Бенгард та Е. А. Свердлов. "Обработка сложного широкополосного пространственно-временного сигнала с линейной частотной модуляцией". MORSKIE INTELLEKTUAL`NYE TEHNOLOGII)</msg> 1, № 2(68) (2025): 196–200. https://doi.org/10.37220/mit.2025.68.2.024.

Full text

Abstract:

Для решения задач обнаружения подводных целей, а также для решения задач оценки их координат и радиальной скорости необходимо, чтобы сигнал распространялся в гидроакустическом канале с как можно меньшими потерями и искажениями, был способным эффективно отражаться от целей, а также был достаточно энергетичным для обнаружения на фоне шумов и помех. На современном этапе развития в гидроакустике используются сложные широкополосные сигналы и антенные решетки. В данной статье рассматривается формирование пространственно-временного сигнала с линейной частотной модуляцией для решения вышеупомянутых за

APA, Harvard, Vancouver, ISO, and other styles

48

Chen, Shuai, Hongliang Huang, Lingzhi Li, Xin Rao, and Yuqing Zhang. "Research on Marine Environmental Noise Based on Acoustic Bait Domestication Technology." International Journal of Natural Resources and Environmental Studies 3, no. 3 (2024): 101–6. http://dx.doi.org/10.62051/ijnres.v3n3.12.

Full text

Abstract:

Acoustic domestication type of marine pastures are generally established in shallow waters with water depth not exceeding 200 m. In order to study the effect of acoustic domestication, this paper aims to investigate the environmental noise in the shallow waters of the sea. Unlike the stable deep sea environment, the environmental noise in the shallow sea is extremely complex, which has a direct impact on the effect of acoustic domestication. In this paper, in order to study the marine environmental noise, a hydroacoustic signal processing system is established, which is divided into two parts:

APA, Harvard, Vancouver, ISO, and other styles

49

Đoàn, Trung Thành, Tran Quang Giang, Vu Hai Lang, and Bach Nhat Hoang Bạch. "An evaluation research of constant false alarm rate algorithm for the application of underwater vehicles management system based on USBL sonar principles in shallow water." Journal of Military Science and Technology 93, no. 93 (2024): 3–11. http://dx.doi.org/10.54939/1859-1043.j.mst.93.2024.3-11.

Full text

Abstract:

The paper presents an overview of underwater traffic management systems utilizing sonar principles. Based on the evaluation of the current situation both domestically and internationally, the research team has proposed the development of a underwater signal processing algorithm based on an adaptive threshold in the Ultra-short Baseline System (USBL). The theoretical results were implemented on FPGA hardware, not only enhancing signal detection capabilities but also meeting real-time signal processing requirements when deployed in complex underwater conditions in various shallow water regions o

APA, Harvard, Vancouver, ISO, and other styles

50

Kartsan, Igor, and Nikolai Tuzov. "Algorithm of information stability in hydroacoustic control channel for aquaculture." BIO Web of Conferences 130 (2024): 03005. http://dx.doi.org/10.1051/bioconf/202413003005.

Full text

Abstract:

Increasing attention is being paid to the mechanisms of data transfer between ocean research devices and data collection and analysis centers for the subsequent study and theorization of ocean evolution. All transmitted data are vulnerable to interception by unauthorized parties, so one of the main challenges is to protect the transmitted information. The proposed algorithm is based on steganographic method and solves the authentication problem by embedding additional data into the original signal in such a way that it is not empirically detectable. Among the first and best- known methods for

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!