Non-Linear Optoacoustic Narrowband Communications Technique
Abstract
The present invention includes a system and method of use for communications from an in-air platform to a submerged platform. The system includes a laser positionable on the in-air platform above a water medium that sends a pulsed information-bearing laser beam containing a modulated communications signal to create and react in a non-linear regime manner with the water medium at an air/water interface. The beam vaporizes and optically breaks down a portion of the water medium, creates a shock wave and generates bubble oscillations at the vaporized portion. An acoustic sensor on the submerged platform detects these shock wave oscillations within the water medium and a demodulator- decoder that identifies these broadband acoustic transients that contain deterministically placed energy and demodulates-decodes the acoustic transients into the transmitted communications signals from the in-air platform.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 03, 2006
- Accession Number
- ADD020244
Entities
People
- Fletcher A. Blackmon
Organizations
- United States Department of the Navy