Estimation of the detection range of a hydroacoustic system based on the acoustic power flux receiver

Gordienko, V. A.; Krasnopistsev, N. V.; Наседкин, А. В.; Nekrasov, V. N.

doi:10.1134/s1063771007060103

Cited by 2 publications

(5 citation statements)

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“…In addition, the directivity of the particle velocity channel of the hydrophone is not strictly symmetrical at = 1250 Hz f and = 1600 Hz f , which may lead to the asymmetric errors that are observed in the experimental results in Figure 11b,c. A comparison of the DOA estimation results between the method using the parameter β in this paper and the acoustic intensity method in the free space [27,28] at different incident angles is shown in Figure 12. In addition, the estimation error using the method in this paper is shown in Figure 13.…”

Section: Experiments Resultsmentioning

confidence: 99%

“…Moreover, the DOA cannot be estimated using the acoustic intensity method, as shown in Figure 12, this is because the active intensity direction is not the direction of the target near the baffle. A comparison of the DOA estimation results between the method using the parameter β in this paper and the acoustic intensity method in the free space [27,28] at different incident angles is shown in Figure 12. In addition, the estimation error using the method in this paper is shown in Figure 13.…”

Section: Experiments Resultsmentioning

confidence: 99%

“…A comparison of the DOA estimation results between the method using the ter β in this paper and the acoustic intensity method in the free space [27,28] at incident angles is shown in Figure 12. In addition, the estimation error using the in this paper is shown in Figure 13.…”

Section: Experiments Resultsmentioning

confidence: 99%

“…Therefore, the field can be characterized as purely active intensity, which means the reactive intensity is zero according to Equation (30). In particular, the particle velocity direction and the active intensity direction are consistent with the azimuth of the source, which provides a theoretical support for the DOA estimation using a single vector hydrophone in the free space [27,28]. However, the acoustic field near the planar cavity baffle is determined by the incident wave and the reflected wave together.…”

Section: The Properties Of Pressure Particle Velocity and Complex Intensity Near The Baffle Based On The Euler Descriptionmentioning

confidence: 97%

“…where P is the Fourier transform of p in the time, and V x and V z are the Fourier transform of v x and v z in the time. Moreover, because the combined processing of pressure and particle velocity can obtain a higher output signal-to-noise ratio [27,28], it is the best to use the complex intensity ratio in two directions to calculate parameter β from the acoustic data.…”

Section: The Application Of the Properties Of The Acoustic Vector Field Near The Bafflementioning

confidence: 99%

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Properties of the Acoustic Vector Field near the Underwater Planar Cavity Baffle and Its Application

Chen

Zhu

Yang

2022

JMSE

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In order to apply the acoustic vector hydrophone on a ship, the properties of the acoustic vector field near the underwater planar cavity baffle are studied based on the Euler description and Lagrange description. The acoustic vector field is calculated based on the transfer matrices and matched boundary conditions. It is shown that the interference structure appears in the acoustic field. In particular, the particle velocity direction and intensity vector cannot directly reflect the azimuth of the source. The points at which the particle velocity is zero are saddle points and nodal points in the particle velocity vector field. Moreover, the particle motion is generally an ellipse near the planar cavity baffle. Furthermore, this paper defines a parameter that can fully represent the particle motion, and the direction of arrival (DOA) can be estimated using a single acoustic vector hydrophone using this parameter in some cases. At the end, the validity of the theoretical calculation and the method of using the parameter to estimate the DOA are verified experimentally.

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Section: Experiments Resultsmentioning

confidence: 99%

Section: Experiments Resultsmentioning

confidence: 99%

Section: Experiments Resultsmentioning

confidence: 99%

Section: The Properties Of Pressure Particle Velocity and Complex Intensity Near The Baffle Based On The Euler Descriptionmentioning

confidence: 97%

Section: The Application Of the Properties Of The Acoustic Vector Field Near The Bafflementioning

confidence: 99%

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Properties of the Acoustic Vector Field near the Underwater Planar Cavity Baffle and Its Application

Chen

Zhu

Yang

2022

JMSE

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Estimation of the background noise level with a horizontal array against spatially uncorrelated and structural interferences

2013

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Estimation of the detection range of a hydroacoustic system based on the acoustic power flux receiver

Cited by 2 publications

References 0 publications

Properties of the Acoustic Vector Field near the Underwater Planar Cavity Baffle and Its Application

Properties of the Acoustic Vector Field near the Underwater Planar Cavity Baffle and Its Application

Estimation of the background noise level with a horizontal array against spatially uncorrelated and structural interferences

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