Peak-time sensitivity kernels for noise cross-correlation patterns (PTSK)
Abstract
This proposal aims at studying the sensitivity of peak arrival times defined on the noise cross-correlationpattern the envelope of the cross-correlation function of an underwater noise field between two locations with respect to changes in the sound-speed field in refractive underwater environments as well as noise sourcestrengths and locations. A wave-theoretic scheme allowing for finite-frequency calculations in 2 and 3dimensions combined with the Born approximation for perturbations of the Greens function and the peakarrivalapproach will be used to obtain peak-time sensitivity kernels (PTSKs) with respect to environmental(sound-speed) changes. This will pave the way for obtaining environmental information from noisemeasurements. The PTSKs will be derived and studied for different propagation conditions and noise-sourcedistributions, ranging from spatial distributions of uncorrelated noise sources to point sources such asindividual ships.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Oct 19, 2020
- Source ID
- N629092012084
Entities
People
- Emmanuel Skarsoulis
Organizations
- Foundation for Research and Technology – Hellas
- Office of Naval Research
- United States Navy