Mode sensing and prediction in deep ocean environments
Abstract
This project is a three year basic research effort on deep water acoustics in temperate and arctic environments, focusing primarilyon mode sensing and prediction. The first objective of the project is to develop novel signal processing algorithms for tomographicsensors that facilitate interpretation of the mode arrival structure. Understanding mode propagation is vital for ocean acoustic applications in deep temperate waters and in the rapidly changing Arctic. We will focus on a class of universal algorithms that automatically adapt to changes in the environment, require minimal training data, and are robust to sensor perturbations. The second objective of the project is to develop efficient models for long range propagation through internal waves that can predict receptions on autonomous vehicles or ambient noise in the SOFAR channel due to thesuperposition of many distant sources. While parabolic equation simulations provide accurate results, they are computationally intensive andmay be prohibitive to implement for applications involving variable source ranges and/or large numbers of sources. We will apply resultsfrom random matrix theory to develop approximate mode scattering models that require minimal computation and produce accurate statistics that can be verified with observed data from prior experiments. The third objective focuses on ocean acoustics education. Ocean acoustics is designated as a National Naval Responsibility. In addition to preparing a graduate student for a career in the field, this project will explore new collaborative approaches to teaching. The goal is to help students strengthen their understanding of the fundamentals, explore advanced topics, and synthesize knowledge from multiple disciplines so that they have the skills necessary to plan, implement, and analyze ocean experiments.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 24, 2023
- Source ID
- N000142312709
Entities
People
- Kathleen E Wage
Organizations
- George Mason University
- Office of Naval Research
- United States Navy