Performance analysis of digital acoustic communication in a shallow water channel

Zieliński, A.; Yoon, Young-Hoon; Wu, Lixue

doi:10.1109/48.468243

Cited by 105 publications

(44 citation statements)

References 8 publications

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“…Li et al [18] used the boundary element method (BEM) to model acoustic radiation and scattering from bodies of arbitrary shape in close proximity of an infinite plane that has a general impedance boundary condition. In a series of papers, Gaunaurd and Huang [19][20][21] employed translational addition theorems for spherical wave functions to study acoustic scattering by a hard spherical body near a hard flat boundary, by a thin spherical shell near a free surface and by an ideal air bubble near the sea surface. Bishop and Smith [22] developed a null-field T-matrix formalism to investigate plane-wave scattering from an elastic spherical shell near a sediment boundary with an arbitrary roughness profile.…”

Section: Introductionmentioning

confidence: 99%

Diffraction of sound by a poroelastic cylindrical absorber near an impedance plane

Hasheminejad¹,

Alibakhshi²

2007

International Journal of Mechanical Sciences

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Section: Introductionmentioning

confidence: 99%

Diffraction of sound by a poroelastic cylindrical absorber near an impedance plane

Hasheminejad¹,

Alibakhshi²

2007

International Journal of Mechanical Sciences

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“…It is clear that the proximity of the wall makes the problem more difficult to solve. If the wall is initially idealized as rigid, planar, and of infinite extent, a very simple theoretical device known as the method of images can smoothly take its presence into account [3]- [5], [21]. This method substitutes the original boundary value problem by one with two sources in an unbounded medium (i.e., the original source and the mirror image source).…”

Section: Mathematical Formulationmentioning

confidence: 99%

“…References [1] and [2] have each employed distinct analytical methods to examine acoustic scattering of plane compressional waves by two identical rigid and elastic spheres, respectively. The method of images in combination with the translational addition theorems for the spherical wave functions are extensively employed to study acoustic scattering by a hard spherical body near a hard flat boundary [3], by a thin spherical shell near a free (pressure release) surface [4], and by an ideal air-bubble near the sea surface [5]. Axisymmetric acoustic radiation from a spherical source vibrating with an arbitrary, time-harmonic velocity distribution while positioned wholly outside a fluid sphere is examined in [6].…”

mentioning

confidence: 99%

Acoustic Radiation From a Pulsating Spherical Cap Set on a Spherical Baffle Near a Hard/Soft Flat Surface

Hasheminejad

Azarpeyvand

2004

IEEE J. Oceanic Eng.

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Abstract-Radiation of sound from a spherical piston, set in the side of a rigid sphere, undergoing harmonic radial surface vibrations in an acoustic halfspace is analyzed in an exact fashion using the classical method of separation of variables. The method of images in combination with the translational addition theorems for spherical wave functions is employed to take the presence of the flat boundary into account. The analytical results are illustrated with numerical examples in which the piston is pulsating near the rigid/compliant boundary of a water-filled halfspace. Subsequently, the basic acoustic field quantities such as the acoustic radiation impedance load and the radiation intensity distribution are evaluated for representative values of the parameters characterizing the system. Numerical results reveal the important effects of excitation frequency, source position, and cap angle on the acoustic radiation impedance load and the radiation intensity distribution. The presented work can lead to a better understanding of dynamic response of near-surface underwater transducers.

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“…The most relevant acoustic field quantities are the scattering form-function, the scattered far-field pressure, and the scattered intensity. The standard definition of the form-function amplitude with respect to the real sphere is written as (4) …”

Section: (I)mentioning

confidence: 99%

“…Gaunaurd and Huang (2) employed the translational addition theorems for the spherical wave functions to study acoustic scattering by a hard spherical body near a hard flat boundary. They also considered acoustic scattering by a thin spherical elastic shell near a free surface (3) , and by an ideal air-bubble near the sea surface (4) . More recently, Hasheminejad (5) examined acoustic radiation from a spherical surface undergoing harmonic modal vibrations near a locally reacting (finite impedance) planar boundary.…”

Section: Introductionmentioning

confidence: 99%

Scattering of Plane Waves by a Rigid Sphere in an Acoustic Quarterspace

Hasheminejad

Badsar

2005

JSME international journal. Ser. B, Fluids and thermal engineer

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The acoustic scattering by a submerged spherical rigid obstacle near an acoustically hard concave corner, which is insonified by plane waves at arbitrary angles of incidence, is studied. The formulation utilizes the appropriate wave-harmonic field expansions and the classical method of images in combination with the translational addition theorems for spherical wave functions to develop a closed-form solution in form of infinite series. The analytical results are illustrated by numerical examples where the spherical object is located near the rigid boundary of a fluid-filled quarterspace and is insonified by plane waves at oblique angles of incidence. Subsequently, the basic acoustic field quantities such as the form function amplitude, the scattered far-field pressure, and the scattered acoustic intensity are evaluated for representative values of the parameters characterizing the system. The limiting case involving a spherical object submerged in an acoustic halfspace is considered and good agreement with a well-known solution is established.

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Performance analysis of digital acoustic communication in a shallow water channel

Cited by 105 publications

References 8 publications

Diffraction of sound by a poroelastic cylindrical absorber near an impedance plane

Diffraction of sound by a poroelastic cylindrical absorber near an impedance plane

Acoustic Radiation From a Pulsating Spherical Cap Set on a Spherical Baffle Near a Hard/Soft Flat Surface

Scattering of Plane Waves by a Rigid Sphere in an Acoustic Quarterspace

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