NDLI: High Frequency Acoustic Propagation using Level Set Methods

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OCEANS'11 MTS/IEEE KONA

OCEANS 2010 MTS/IEEE SEATTLE

Contrasts of Fluid Chemistry, Isotope Compositions and Temperature in Modern Seafloor Hydrothermal Systems

Reduced-Recoil-Risk Rope Test Method

Large Scale Ocean Based Ice Structures for Habitats, Storm and Flood Protection, and Industrial, Energy, and Transport Applications

BP's AUV Development program, Long Term Goals - Short Term Wins

Considerations in Marine Sand Mining and Beach Nourishment

High Bandwidth Optical Networking for Underwater Untethered TeleRobotic Operation

Rediscovery of airship USS Macon: The first archaeological survey within the boundaries of the Monterey Bay National Marine Sanctuary

A Digital Thin Line Towed Array for Small Autonomous Underwater Platforms

Composite Pressure Hulls for Autonomous Underwater Vehicles

The Deepglider: A Full Ocean Depth Glider for Oceanographic Research

Reliable Seabed Characterization for MCM Operations

The Towed Torpedo Emulator (TOTEM) System

Effects of transducer geometry and beam spreading on acoustic Doppler velocity measurements near boundaries

Economic Validation Analyses of Japan's Proposed Nodule, Crust, and Kuroko-type SMS Mining in 2006

Assessing Design Tradeoffs in Deploying Undersea Distributed Sensor Networks

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3D Sidescan with a Small Aperture: Imaging Microbialites at Pavilion Lake

The Romanian Marine Ecosystem - an Important Source for the Pharmaceutical Industry

The Inventory of the Marine Habitats on the Romanian Littoral with Significance in Marine Conservation and Exploitation

Real-Time Image and Status Transmission from a UUV during a Ship Hull Inspection in a Port Environment using a High-Speed High-Frequency Acoustic Modem

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3D Flow and Sediment Transport Modelling at the Reversing Falls - Saint John Harbour, New Brunswick

Certification for Oceanographic Professionals: A Needs Assessment Study

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Automated Coordinator Synthesis for Mission Control of Autonomous Underwater Vehicles

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Aerosol Impact on Remote Sensing in the Coastal Atmosphere Surface Layer

Design and testing of Control and Positioning System for Underwater mining Machine

Utilization of LIDAR and NOAA's Vertical Datum Transformation Tool (VDatum) for Shoreline Delineation

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Wind-up AUVs: Combined energy storage and attitude control using control moment gyros

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Underwater Acoustic Communications Performance Modeling in Support of Ad Hoc Network Design

Acoustic Monitoring of the Juvenile Pink Salmon Food Supply and Predators in Prince William Sound, Alaska

Parametrical and Textural Analysis of Sidescan Sonar Images of the Seafloor

An Adaptive Algorithm for Amplitude and Phase Measurements Based on Multiple Sampling

Variable Step Size Adaptive Sub-Sample Delay Estimation Using a Quadrature Phase Detector

A Precise Acoustic Distance Measuring System for Tectonic Plate Motion

Seaweed Bioethanol Production in Japan - The Ocean Sunrise Project

Resolved Acceleration Control of Underwater Vehicle-Manipulator Systems using Momentum Equation

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Monitoring Suspended Sediment Plumes Using an Acoustic Doppler Current Profiler

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An Augmented Reality Architecture for the Creation of Hardware-in-the-Loop & Hybrid Simulation Test Scenarios for Unmanned Underwater Vehicles

Study of a Three Point Mooring of an Open Ocean Aquaculture Feed Buoy

Practical Use of Personal Buoy System for Fishery Using Sensor Network Technologies

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Sensor Repositioning to Improve Undersea Sensor Field Coverage

Phase Coherent Digital Communications for Wireless Optical Links in Turbid Underwater Environments

Preliminary model tests for the design of a gliding deep water elevator

Design and initial in-water testing of advanced non-linear control algorithms onto an Unmanned Underwater Vehicle (UUV)

Re-analysis of the "Akron" Airship Pressure Data to Design Pressure Measurement Experiments on an Underwater Vehicle

An Improved Location-Aware Routing Protocol for Mobile Underwater Acoustic Networks

The Ocean Technology Test Bed - An Underwater Laboratory

Deployment of the junction unit for Off-Toyohashi cabled observatory

Mathematics of Aquatic Ecosystems - A Curriculum: Integration of Math Instruction Using a Sequence of 16 Hands-On Aquatic Ecosystem Projects

Data Analysis of a Low-Cost Bathymetry System Using Fishing Echo Sounders

Physical and Chemical Deterioration Characterization of Concrete Reefs in Tongyeong Coastal Waters, Korea

Investigation of under-ice thermal structure: small AUV deployment in Pavilion Lake, BC, Canada

An AUV-deployable pulsed laser line scan (PLLS) imaging sensor

Monitoring the Spring Bloom in an Ice Covered Fjord with the Land/Ocean Biogeochemical Observatory (LOBO)

Underwater Vehicle Positioning Based on Time of Arrival Measurements from a Single Beacon

Detecting Class-Independent Linear Relationships within an Arbitrary Set of Features

Battery Systems for Maritime AUVs

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Theoretical Passive Sonar Performance of a Cluster of UUV Towed Line Arrays Employing Orientation Diversity

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Inverted Echo Sounder on a Cabled Observatory

Maximum Likelihood Estimates and Cramer-Rao Bounds for Map-Matching Based Self-Localization

Improvements in Upward Looking Sonar-Based Sea-Ice Measurements: A Case Study for 2007 Ice Features in Northumberland Strait, Canada

Effects of Electromagnetic Fields on the Bioluminescence of Dinoflagellates

Ocean Surface Wave Energy Harnessing Development at Stevens Institute of Technology (SIT)

Analysis of In-situ Microscopic Organism Behavior in Data Acquired Using a Free-drifting Submersible Holographic Imaging System

The U.S. National Science Foundation's Ocean Observatories Initiative at Preliminary Design

A technique for optimizing the placement of oceanographic sensors with example case studies for the New York Harbor region

Passive acoustic detection of modulated underwater sounds from biological and anthropogenic sources

Automated Change Detection in an Undersea Environment using a Statistical Background Model

Braitenbergian experiments with simple aquatic robots

Probabilistic analysis of a passive acoustic diver detection system for optimal sensor placement and extensions to localization and tracking

Toward a Neurocognitive Agent Architecture for AUVs

Echosounder Depth Tracking with the Extended Kalman Filter

The Deployment of a Long-Term Seafloor Seismic Network on the Juan de Fuca Ridge

RCOOS and Ocean Information Tools for Decision Makers

Tsunami Detection Systems for International Requirements

Implementing a New Paradigm in Ocean Observing: A View from the Coolroom

Offshore Wind Resource Potential of the United States

Full-Scale Measurements of High Speed Passenger Ferry Performance and Wake Signature

AUV Operations at MBARI

Application of Radiative Transfer Theory to Acoustic Propagation in the Ocean Bottom

Capacity of a Relay Acoustic Channel

First Middle-Eastern Cabled Seabed Observatory: Oman Deployment Provides Insights Into Long-Term Arabian Sea Environmental Conditions

The SSBL Positioning for The AUV with Data Transmission

Energy-Efficient Joint Source-Channel Coding for Optical Wireless Underwater Networks

A Wireless Internet-Based Observatory: The Real-time Coastal Observation Network (ReCON)

Inductive Power System for Autonomous Underwater Vehicles

Coral Fish Shoal Detection from Acoustic Echograms

Broadband Transduction Implementation and System Impact

Chesapeake Inundation Prediction System (CIPS): A Regional Prototype for a National Problem

NOAA's New IOOS Program

Navigation Simulation of a VLMOS for Wind Power Generation

SmartBay, Ireland: Design and Planning for a Cabled Ocean Observatory off the West coast of Ireland

A Detailed Simulation Study of the UWAN-MAC Protocol for Underwater Acoustic Networks

Using Observing System Data in STEM Education

A Simple Sparse Channel Estimator for Underwater Acoustic Channels

Demonstration of a Novel Man-Portable Magnetic STAR Technology for Real Time Localization of Unexploded Ordnance

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Broadband acoustic transmission measurements in surface ship wakes

An Advanced Measurement System for Vortex-Induced-Vibrations Characterization in Large-Scale Risers

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High Mode Vortex Induced Vibration (VIV) Experiments on a Large-Scale Riser

QTC DEEP - A ROV-Mounted Single Beam Acoustic Seabed Classification System for High-Resolution Mapping

Monitoring and Controlling System Performance in the Pioneer Buoy

Ocean Outfall Mapping Using an Autonomous Underwater Vehicle

Phase-Mode Circular Multi-channel Hydrophone with Super Directivity

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Optimizing the Transmission Range in an Underwater Acoustic Network

Measurements of the turbulent microstructure of a buoyant salinity plume using acoustics

Integrating passive and active acoustics for the assessment of fish stocks

Array Modeling of Active Sonar Clutter

Biomimetic Propulsion Systems for Mini-Autonomous Underwater Vehicles

Acoustic Positioning and Tracking in Portsmouth Harbor, New Hampshire

Frequency-Domain Channel Estimation and Equalization for Single Carrier Underwater Acoustic Communications

Propagation-Invariant Classification of Signals in Channels with Dispersion and Damping

Phase Space Approach and Approximations for Wave Propagation

Acoustic Classification with Single-Beam Echosounders: Processing Methods and Theory for Isolating Effects of the Seabed on Echoes

A critical overview of bistatic scattering wave from oceans surface

Application of decision tree techniques for the Prediction of Significant Wave Height

An Automated Visual Event Detection System for Cabled Observatory Video

Comparison of Non-hurricane and Hurricane Induced Near Inertial Oscillations in Deep Water of Gulf of Mexico

Exploiting the Bandwidth-Distance Relationship in Underwater Acoustic Networks

Measurements of Ambient Noise during Extreme Wind Conditions in the Gulf of Mexico

Estimates of Radial Current Error from High Frequency Radar using MUSIC for Bearing Determination

ADCP Deployments near Offshore Structures

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Design of a Subsurface Moored Acoustic Array in Deep Water

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An Efficient Algorithm for the Radar Recognition of Ships on the Sea Surface

Data Exploration for Multidisciplinary Research

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Time-Series Data Exchange Using the Geography Markup Language

Packet Scheduling for Multihopped Underwater Acoustic Communication Networks

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Underwater Acoustic Imaging by Diversity Techniques

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Observations from Demonstrations of Several Commercial Diver Detection Sonar Systems

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Measurements of Waves and Current in Support of Coastal Projects on Nantucket and Martha's Vineyard

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Time-varying Underwater Acoustic Channel Modeling for Moving Platform

Coordinated Operation of Autonomous Underwater and Surface Vehicles

Development of a Self-Contained, Satellite Based, Moored Surface Buoy Position Tracking Device

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Characterization of the range dependence of an ocean environment to reduce acoustic estimation time

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The Ocean Studies Institute's Ocean Observatory Program: CICORE in San Pedro Bay, California

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Making AUVs Truly Autonomous

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NUROV: The Network-controlled Underwater Remote Observation Vehicle

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Table of contents

Welcome from the Conference Chair

Welcome from the Technical Chair

Welcome to Vancouver

Useful Information

General Conference Information

T1 - AUV Technology and Application Basics

T2 - Acoustic Seabed Classification with Multibeam and Sidescan Images

T3 - Signal Processing Methods for Underwater Acoustic Communications

T4 - Outline for Workshop on Airborne Hyperspectral Imaging

T5 - Sonar Signal / Image Processing and Communication

T6 - High Frequency Over-the-Horizon Radar Applications I Oceanography

T7 - End User Application of Underwater Cable and Connectors

T8 - Bayesian Signal Processing

T9 - Signal Waveform Design for Underwater Acoustic Communications

Technical program

Student Poster Program and Competition

Exhibitor Booth List

Exhibitor Profiles

Level 1 [floorplan]

Vancouver Convention and Exhibition Centre: exhibition map

2007 MTS Awards/Fellows

Proceedings of OCEANS 2005 MTS/IEEE

Oceans '04 MTS/IEEE Techno-Ocean '04 (IEEE Cat. No.04CH37600)

Oceans 2003. Celebrating the Past ... Teaming Toward the Future (IEEE Cat. No.03CH37492)

OCEANS '02 MTS/IEEE

MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295)

OCEANS 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings (Cat. No.00CH37158)

Oceans '99. MTS/IEEE. Riding the Crest into the 21st Century. Conference and Exhibition. Conference Proceedings (IEEE Cat. No.99CH37008)

IEEE Oceanic Engineering Society. OCEANS'98. Conference Proceedings (Cat. No.98CH36259)

Oceans '97. MTS/IEEE Conference Proceedings

OCEANS 96 MTS/IEEE Conference Proceedings. The Coastal Ocean - Prospects for the 21st Century

'Challenges of Our Changing Global Environment'. Conference Proceedings. OCEANS '95 MTS/IEEE

Proceedings of OCEANS'94

Proceedings of OCEANS '93

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology

OCEANS 91 Proceedings

Conference Proceedings on Engineering in the Ocean Environment

Proceedings OCEANS

OCEANS '88. 'A Partnership of Marine Interests'. Proceedings

OCEANS '85 - Ocean Engineering and the Environment

Proceedings OCEANS '83

OCEANS '77 Conference Record

OCEAN 75 Conference

Ocean '74 - IEEE International Conference on Engineering in the Ocean Environment

Ocean 73 - IEEE International Conference on Engineering in the Ocean Environment

Ocean 72 - IEEE International Conference on Engineering in the Ocean Environment

IEEE 1971 Conference on Engineering in the Ocean Environment

1970 IEEE International Conference on Engineering in the Ocean Environment - Digest of Technical Papers

High Frequency Acoustic Propagation using Level Set Methods

Content Provider	IEEE Xplore Digital Library
Author	Doran, S.L. Fredricks, A.J.
Copyright Year	2007
Description	Author affiliation: Naval Undersea Warfare Center, Newport (Doran, S.L.; Fredricks, A.J.)
Abstract	This paper describes a new approach to numerical solution of the high frequency approximation to the wave equation. Traditional solutions to the Eikonal equation in high frequency acoustics are obtained via ray tracing. In ray tracing, the numerical grid on which solutions are computed becomes distorted over time as rays diverge from the initial wavefront, reducing the accuracy of the solution. The level set method is a fixed grid method, whereby the user controls the underlying grid, and hence the accuracy, of the solution
Starting Page	1
Ending Page	7
File Size	3257883
Page Count	7
File Format	PDF
ISBN	9780933957350
DOI	10.1109/OCEANS.2007.4449166
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-09-29
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	MTS
Subject Keyword	Frequency Acoustic propagation Level set Ray tracing Optical surface waves Partial differential equations Surface acoustic waves Grid computing Computational modeling Geometrical optics
Content Type	Text
Resource Type	Article

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