Acoustic Noise Interferometry
Abstract
Acoustic noise interferometry uses long time series recordings of ambient and shipping noise, which are concurrently captured at two locations, to measure the acoustic Greens function. With this technique, each hydrophone becomes a virtual acoustic transceivera combination of a source and a receiverwhich can be used for passive acoustic remote sensing of the ocean. Compared to active techniques, passive remote sensing greatly reduces costs and allows for undetected, surreptitious monitoring of acoustic non-reciprocity, a sensitive measure of the velocity of oceanic currents.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2020
- Accession Number
- AD1114725
Entities
People
- Rodney D Thatcher
Organizations
- Naval Postgraduate School