The purpose of this study is to identify and quantify the difference in detections of a subsurface target from a subsurface sensor source between range-independent and range-dependent versions of the same acoustic propagation model. Environmental data were pulled from open source databases to provide ...
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Model-based geoacoustic inversion in range-dependent underwater environments is a challenging task constrained by data quality (synthetic or measured) and propagation-model efficiency and accuracy. The Inversion Techniques Workshop (ITW), held in Gulfport, MS, May 15-18, 2001, was organized for th...
Ray travel times in range-dependent acoustic waveguides An approximate analytical approach to describe the stochastic motion of sound rays in deep ocean is developed. This is done for a realistic propagation model with an internal wave induced perturbation imposed on the smooth background sou... AL...
Lallement, "Parallel implementation of a 3-D range- dependent ray model for replica field generation," in Full Field Inver- sion Methods in Ocean and Seismo-Acoustics, 1995, O. Diachok, A. Caiti, P. Gerstoft, and H. Schmidt, Eds. Norwell, MA, USA: Kluwer, pp. 45-50....
range-dependent environments requires full range-dependent modeling in order to determine the bottom properties. Geo- acoustic inversion for these environments becomes significantly more computationally intensive than range-independent inver- sion. The choice of a propagation model for the geoacoustic ...
While the energy of anti-symmetric mode A could be tracked to identify the liquid, the energy of the acquired signal is highly dependent on coupling strength. During measurement, conventional portable or sliding probe techniques generally exhibit varying acoustic coupling strength with containers, thus...
The paper describes a new broadband tomographic matched field methodfor estimating the geoacoustic properties of a range-dependent shallowwater environment. This method is designed for a multiple acousticelement configuration (several sources and vertical arrays deployed inan ocean region) in order to est...
(1995) their sensitivity is highly dependent on the material’s microstructural properties, e.g. thickness, surface area, porosity and pore size distribution. Sign in to download full-size image 12.4. Humidity sensitivity of MgAl2O4 samples fabricated with different conditions at 80 °C(Source: ...