Single sensor and compact array localization methods
Abstract
The goal of this project will be to build on Nosal~s theoretical and computational foundation to modify and demonstrate application of model-based localization methods for single hydrophone systems and compact arrays. Previous work by the PI (funded by ONR Oceans Acoustics and Marine Mammal Programs) developed model?based marine mammal tracking methods. Model?based methods incorporate sound propagation models and can consequently account for depth?dependent sound speed profiles and multiple reflections. The past work demonstrated that more sophisticated methods than those typically used in marine mammal tracking (e.g. constant?sound?speed time?of?arrival methods) can offer significant improvements (e.g. tracking over much larger distances and/or with much greater precision) while maintaining a reasonable computational load. Although model?based methods are generally applicable, prior work by the PI targeted large hydrophone ranges (such as AUTEC and PMRF). As a consequence, the details of implementation (which vary depending on array configuration and source characteristics) and applications were limited to these large arrays. Unfortunately such arrays are not widely available; many marine mammal projects make use of smaller arrays. This project will build on the PI’s theoretical and computational foundations to modify, implement and demonstrate application of model?based localization methods for single hydrophone systems and compact arrays.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Nov 23, 2016
- Source ID
- N000141612598
Entities
People
- Eva-Marie Nosal
Organizations
- Office of Naval Research
- United States Navy
- University of Hawaiʻi System