Shallow-Water Acoustics: Proceedings of the Second International Shallow-water Acoustics Conference (SWAC'09) Shanghai, China 16-20 September 2009
by Simmen, Jeffrey; Livingston, Ellen S.; Zhou, Ji-Xun; Li, Feng-HuaFormat: Hardcover
Pub. Date: 2010-10-01
Publisher(s): Amer Inst of Physics
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Summary
Undersea acoustic applications in shallow water, to detect, communicate, navigate, monitor and measure, are dependent upon a good physical understanding of sound propagation and scattering in this highly dynamic and inhomogeneous waveguide. Achieving such an understanding requires an interdisciplinary approach encompassing acoustics, physical oceanography, marine geophysics, marine biology, ocean engineering, and signal processing, as well as the underlying physics and mathematics of the integrated theory.
Table of Contents
| Preface | p. ix |
| Overview Papers | |
| Fifteen Years of U.S.-China Cooperative Research in Underwater Acoustics: 1995-2010 | p. 1 |
| Finite-Element Modeling in Ocean Acoustics: Where are We Heading? | p. 11 |
| Nonlinear Internal Wave Interactions with Low Frequency Shallow Water Sound-What is Left to Do? | p. 23 |
| Mid-Frequency Acoustics in SW06 | p. 28 |
| Sound Propagation in Shallow-Water Waveguides | |
| Prufer Transformations for the Normal Modes in Ocean Acoustics | p. 35 |
| Accounting for Water-Column Variability in Shallow-Water Waveguide Characterizations Based on Modal Eigenvalues | p. 46 |
| Theory and Modeling the Horizontal Refraction in Shallow Water | p. 53 |
| The Effects of Sloping Bottoms on the Vertical Correlation | p. 61 |
| Investigation of Interference Phenomena of Broadband Acoustic Vector Signals in Shallow Water | p. 69 |
| Gaussian Beam Tracing for Ocean Acoustics | p. 81 |
| Coupled Mode Modeling of 3-D Propagation and Scattering around Conical Seamount | p. 89 |
| Transport Theory for Shallow Water Propagation with Rough Boundaries | p. 99 |
| Extension of Coupled-Modes Method to Waveguides with Elastic Bottom | p. 106 |
| Temporal Coherence of Normal Modes in an Ocean Waveguide | p. 115 |
| Shallow-Water Waveguide Boundaries | |
| Wave Propagation in Water-Saturated Sand and Grain Contact Physics | p. 125 |
| Observations of 0th Order Head Waves in the Yellow Sea | p. 133 |
| Seabed Attenuation in Water Saturated Sands on New Jersey Continental Shelf in 50-3000 Hz Bands | p. 140 |
| Data-Model Comparisons for Sea Surface Waves from the ASIAEX East China Sea Experiment | p. 149 |
| Physical Parameters for Four Seabed Geoacoustic Models from Low-Frequency Measurements | p. 163 |
| Internal Waves and Water Column Effects | |
| Experimental Observations of Internal Wave Influence on Acoustic Propagation in Shallow Water | p. 173 |
| Nonlinear Internal Wave Behavior Near the South of Hai-Nan Island and Simulating the Effect on Acoustic Propagation | p. 183 |
| Effect of Tidal Internal Wave Fields on Shallow Water Acoustic Propagation | p. 191 |
| Sound Velocity Fluctuation Due to Linear Internal Waves in North Yellow Sea | p. 199 |
| The Effects of Internal Waves on the Signal Temporal Correlation Length in the South China Sea | p. 204 |
| Geoacoustic Inversion | |
| Geoacoustic Doppler Spectroscopy: A Novel Acoustic Technique for Surveying the Seabed | p. 212 |
| Geoacoustic Inversion in a Spatially and Temporally Variable Shallow Water Environment | p. 219 |
| Estimating Marine Sediment Properties in a Temporally Varying Water Column Environment | p. 226 |
| Geoacoustic Inversion Using Shallow Water Ambient Noise and Analysis of Uncertainty | p. 234 |
| Bottom Parameters Inversion Research Based Tow-Ship Noise | p. 242 |
| Matched-Field Geoacoustic Inversion by Inverting Ship-Noise Data | p. 247 |
| Long-Range Sediment Tomography in the East China Sea | p. 255 |
| Acoustic Remote Sensing of the Seabed Using Ambient Noise | p. 262 |
| Seabed Geoacoustic Inversion from Long-Range Broadband Sound Propagation in the Yellow Sea | p. 270 |
| An Inversion Method of Geoacoustic Properties Based on Towed Tilted Line Array in Shallow Water | p. 278 |
| Sound Speed Profiles Inversion in Shallow Water Using a Parallel Genetic Algorithm | p. 286 |
| Reverberation and Scattering | |
| Study on Geoacoustics Interface Wave Scattering Characteristic | p. 294 |
| Coherent Reverberation Model Based on Adiabatic Normal Mode Theory in a Range Dependent Shallow Water Environment | p. 300 |
| Low-Frequency Volume Reverberation Measurements in Turbid Seawater | p. 308 |
| Shallow Water Reverberation Model Based on Bottom Reflection Parameters | p. 314 |
| T-Matrix Formulation of Scattering by an Obstacle Near a Planar Sediment Boundary and Application to Detection Using Iterative Time Reversal | p. 323 |
| Signal Processing, Engineering and Applications | |
| Adaptive Bubble Pulse Cancellation and Its Applications | p. 331 |
| Signal Recovery Technique Based on a Physical Method of Underwater Acoustics | p. 339 |
| Studies of the Characteristics of a Densely-Coupled Array of Underwater Acoustic Transmitting Transducers | p. 345 |
| Statistical Estimation of Source Location in Presence of Geoacoustic Inversion Uncertainty | p. 353 |
| An Improved Passive Phase Conjugation Array Communication Algorithm | p. 360 |
| Joint Time-Reversal Processing and Spatial Diversity for Distributed Target Detection in Shallow Water | p. 367 |
| Sonar Detection Range Index Estimation Approach in Uncertain Environments | p. 375 |
| Analysis on Sound Field Recorded with Vector Sensors | p. 383 |
| Inversion of Ocean Environmental Variations via Time Reversal Acoustics | p. 390 |
| Underwater Time Service and Synchronization Based on Time Reversal Technique | p. 397 |
| Single-Mode Closed-Loop Excitation in Shallow Water Using Two Vertical Hydrophone Arrays | p. 405 |
| Target Detection by Receiving-Transmitting-United MVDR TRBF under Environmental Mismatch | p. 411 |
| An Experiment on Passive Synthetic Aperture Time Reversal Communications in Shallow Water | p. 420 |
| Extraction of the Waveguide Invariant from a Shallow-Water Acoustical Experiment | p. 425 |
| A Robust Separating and Tracking Method on Two Wideband Sources by Subspace Rotation with One Vector Hydrophone | p. 431 |
| A Design of Direct-Sequence Spread-Spectrum Acoustic Communication System | p. 439 |
| A Design of Direct-Sequence Spread-Spectrum Acoustic Communication System | p. 439 |
| Active Matched Field Localization by a Horizontal Receiving Array | p. 447 |
| Improvement of Longitudinal Correlation of Explosive Signals by Using Waveguide Invariance | p. 454 |
| Uncertain Acoustic Field Modeling and Robust Source Localization in Shallow Water | p. 462 |
| Author Index | p. 471 |
| Table of Contents provided by Ingram. All Rights Reserved. |
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