INFLUENCE OF THE BROADBAND OCEAN AMBIENT NOISE COHERENCE VARIABILITY FOR DISTRIBUTED VECTOR SENSOR ARRAYS
Abstract
Experimentally characterize the inherent variability of the broadband spatial coherence of the ambient noise field measured in deep water on both fixed or drifting (e.g. sonobuoys) distributed sensor arrays (using either conventional hydrophones or vector sensors) in order to quantify the impact of the non-stationarity and non-ergodicity of ocean ambient noise and the actual short-term deviations of the noise covariance matrix from theoretical expected values on coherent array processing. The proposed research effort will develop a methodology for optimally processing recordings made by drifting vector-sensor arrays (e.g. as deployed on autonomous drifting platforms or tactical sonobuoys) to form an adhoc passive volumetric arrays with enhanced detection and localization performance.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 07, 2019
- Source ID
- N000141912105
Entities
People
- Karim G. Sabra
Organizations
- Georgia Tech Research Corporation
- Office of Naval Research
- United States Navy