Ocean Acoustic Ambient Noise Studies
Abstract
The goal of the proposed work is to develop passive acoustic approaches to determining seabed properties such as sound speed, and attenuation and for source localization. For the seabed characterization work, the primary sound source for sensing is ocean noise# either natural occurring (e.g., breaking waves) or from ships. The work being proposed is based on a phenomenon widely studied in the seismic community and is referred to as the virtual refracted wave. This wave contains valuable information about the seabed properties and developing techniques to measure it could lead to important new tools for seabed characterization. A second component of this proposal is to continue developing the fundamental techniques needed for seabed characterization and source localization methods appropriate for autonomous underwater vehicles. This is work that has been progressing in collaboration with the NATO Centre for Maritime Research and Experimentation. Gliders are very quiet when operating and when equipped with hydrophones make an excellent platform for passive acoustic techniques. The work in this three year period will expand the techniques for passive acoustics from gliders and other autonomous vehicles.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 10, 2018
- Source ID
- N000141812327
Entities
People
- Martin Siderius
Organizations
- Office of Naval Research
- Portland State University
- United States Navy