Radiative transfer theory applied to ocean bottom modeling

Quijano, Jorge E.; Zurk, Lisa M.

doi:10.1121/1.3203992

Cited by 17 publications

(11 citation statements)

References 30 publications

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“…Table 1 summarizes the parameters for the validation experiments. Comparison of the measured vs modeled scattering cross section was presented in previous reports and publications 8,10 . These experiments show that the RT model is able to support a variety of experimental conditions:…”

Section: Resultsmentioning

confidence: 99%

“…Details of the theory and implementation of the RT equation for steady state excitations are explained in a published paper 9 . In summary, the RT equation gives a solution to the general problem depicted in [ ]…”

Section: Description Of the Rt Modelmentioning

confidence: 99%

“…The solution given by this model corresponds to steady-state excitations. The RT formulation for ocean bottom scattering and demonstration of the conservation of power in lossless media are explained in detail in Quijano et al [9][10] .…”

Section: Work Completedmentioning

confidence: 99%

“…) or for transient sources (mathematical details discussed elsewhere 9,10 ). When comparing the RT model to results from experimental data, the received power is found as:…”

Section: Description Of the Rt Modelmentioning

confidence: 99%

“…• The RT model was further validated by comparing to field measurements of angle-dependent backscattering from sediments containing trapped gas bubbles 10 .…”

Section: Work Completedmentioning

confidence: 99%

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A Radiative Transfer Model for Acoustic Propagation in Ocean Sediment Layers

Zurk¹

2012

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The propagation of mid-frequency (1-10 kHz) acoustic waves in shallow water regions (depths of 100-200 m) is strongly influenced by the characteristics of the ocean bottom. While there has been much progress in developing and validating bottom scattering models, much of the focus has been in the high frequency regime with comparatively less focus in the mid-frequency. This is an important topic, since in the mid-frequency regime the acoustic field can penetrate the rough interface into the sediment and undergo multiple scattering from sediment stratification and volume inhomogeneities. In this work, the long-term goal is to develop an understanding of the spatial and temporal characteristics of the acoustic field through a rigorous modeling and measurement effort. In addition, the feasibility of using tools such as chirp sonar for bottom characterization will be considered and assessed. OBJECTIVESThe objective of this research is to examine the acoustic scattering physics in the mid-frequency regime to isolate and characterize the scattering contributions due to bottom roughness, sediment stratification, and embedded volume scatterers. A further objective is to evaluate the use of a chirp sonar system for characterization of the ocean bottom. This will provide a means for accurately quantifying parameters such as reflection losses and bottom penetration over a broad frequency range in support of Navy sonar applications.

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Section: Resultsmentioning

confidence: 99%

Section: Description Of the Rt Modelmentioning

confidence: 99%

Section: Work Completedmentioning

confidence: 99%

“…) or for transient sources (mathematical details discussed elsewhere 9,10 ). When comparing the RT model to results from experimental data, the received power is found as:…”

Section: Description Of the Rt Modelmentioning

confidence: 99%

“…• The RT model was further validated by comparing to field measurements of angle-dependent backscattering from sediments containing trapped gas bubbles 10 .…”

Section: Work Completedmentioning

confidence: 99%

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A Radiative Transfer Model for Acoustic Propagation in Ocean Sediment Layers

Zurk¹

2012

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Determination of the bottom scattering coefficient discontinuity lines in the multibeam ocean sounding

Kovalenko

Прохоров

2021

J. Phys.: Conf. Ser.

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In this paper the problems of constructing sonar images of the seabed according to measurements of the multibeam side scan sonar are considered. The inverse problem for the non-stationary equation of radiation transfer with the diffuse reflection conditions at the boundary which consists in finding the discontinuity lines of the bottom scattering coefficient is investigated. A numerical algorithm for solving the inverse problem is developed, and an analysis of the quality of reconstructing the boundaries of inhomogeneities of the seabed is carried out, depending on the number of views and the width of a radiation pattern and the sounding range.

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Methods of the Theory of Radiation Transfer for Bathymetry Problems

Sushchenko¹,

Lyu

Kan

2019

IOP Conf. Ser.: Earth Environ. Sci.

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Based on the mathematical model of the propagation of an acoustic signal in a fluctuating medium, the inverse problem is formulated, which includes determination a function that describes the deviation of the bottom level from the average specified horizontal plane. In the double scattering approximation and the narrow directivity pattern of the receiving antenna, the solution of the direct problem is obtained. As a solution of the inverse problem, a nonlinear differential equation is obtained for the function describing the deviation of the seabottom relief. A numerical analysis of the solution is carried out.

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Radiative transfer theory applied to ocean bottom modeling

Cited by 17 publications

References 30 publications

A Radiative Transfer Model for Acoustic Propagation in Ocean Sediment Layers

A Radiative Transfer Model for Acoustic Propagation in Ocean Sediment Layers

Determination of the bottom scattering coefficient discontinuity lines in the multibeam ocean sounding

Methods of the Theory of Radiation Transfer for Bathymetry Problems

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