Measurements of three-dimensional, high-frequency, acoustic propagation in highly stratified and dynamic littoral environments from autonomous platforms
Abstract
The long-term goal of the proposed work is to understand the hydrodynamic processescontrolling the three-dimensional propagation a"nd variability of acoustic fields in highlystratifiedand dynamic littoral environments. Littoral environments, such as estuaries, i""nlets,open coast, fjords, sounds, and rivers, are often characterized by three-dimensional structuresincluding fronts, plumes, sal""t-wedges, shear-instabilities, and non-hydrostatic internal jumpsresulting in variability across brad spatial and temporal time sca"les with frequency-dependentimpacts on propagation and associated acoustic variability. These signature hydrodynamicprocesses can" degrade the performance of high-frequency forward looking navy sonar systems(e.g. ATLAS/LCSAS system), as well as having deleterio""us effects on high-frequency, highdata-rate, acoustic communications systems. The last decade has ushered in a new era of mobilean"d autonomous platforms and technology that enable the impact of these physical processes onthe three-dimensional acoustic propagati"on and variability in the acoustic fields to be effectivelysampled, obviating the need for multiple, fixed, costly, assets that wou""ld otherwise be necessaryto sample the fully three-dimensional acoustic environment.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 07, 2017
- Source ID
- N000141712634
Entities
People
- Andone Lavery
Organizations
- Office of Naval Research
- United States Navy
- Woods Hole Oceanographic Institution