Exploiting non-linear acoustical effects of air bubbles for sonar object detection
Abstract
The long-term scientific objective of the proposed project is to develop mathematical models that will lead to a better quantitative understanding and hence exploitation of sonar-induced nonlinear acoustical effects (NLEs) of bubbles. This will benefit sonar operation near the seabed in littoral and other areas where bubbles are present due to hydrodynamic, geophysical, and biological processes, where some combination of these NLEs can be exploited for mine detection in the presence of bubbles, seagrass, or gas-bearing sediments. The near term objective is to conduct laboratory measurements and mathematical modeling of the nonlinear acoustic properties of bubbly liquids to determine how to best exploit these properties to enhance sonar-based mine detection in cluttered environments. Because of the potential application of bubble/mine-discriminating sonar in biologically active areas near the seabed, the project leaders will also participate in meetings and consult with a Specialist Team (ST) formed by NATO Underwater Warfare Capabilities Group (UWW CG), whose purpose is to examine the impact of biological processes on the seafloor and related acoustics.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2016
- Source ID
- N000141512596
Entities
People
- Preston S Wilson
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at Austin