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Proceedings Paper

A remote optical system for port and harbor defense
Author(s): Fletcher A. Blackmon; Lynn T. Antonelli; Anthony Kalinowski
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Paper Abstract

A remote, aerial, laser-based sonar method for detecting and locating underwater targets from the air is discussed. The aerial sonar system combines two independent laser technologies. First, a high power laser is used to remotely generate underwater sound from the air by converting the optical energy into an acoustic pressure wave at the water surface. Second, a low power laser monitors water surface vibrations to detect and localize underwater sound. The aerial (opto-acoustic) generation and (acousto-optic) detection of underwater sound provides a non-contact means for active and passive sonar that does not currently exist. The laser systems could be mounted on an in-air or an above surface platform to search an area to provide intelligence information about the presence and location of underwater objects. Such data could be used for targeting for air-dropped munitions, port defense by monitoring friendly waters, or for area clearance for fleet operations in foreign ports. This transformational capability offers a covert, rapidly deployable, highly distributed, sensor field along the water surface.

Paper Details

Date Published: 19 May 2005
PDF: 8 pages
Proc. SPIE 5780, Photonics for Port and Harbor Security, (19 May 2005); doi: 10.1117/12.606822
Show Author Affiliations
Fletcher A. Blackmon, Naval Undersea Warfare Ctr. (United States)
Lynn T. Antonelli, Naval Undersea Warfare Ctr. (United States)
Anthony Kalinowski, Naval Undersea Warfare Ctr. (United States)

Published in SPIE Proceedings Vol. 5780:
Photonics for Port and Harbor Security
Michael J. DeWeert; Theodore T. Saito, Editor(s)

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