Accession Number:

ADD014494

Title:

Underwater Object Detection System.

Descriptive Note:

Patent Application, Filed 7 Nov 89,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

• Maccabee, Bruce S.

Report Date:

1989-11-07

Pagination or Media Count:

13.0

Abstract:

Propagation of modulated radiation from a platform is substantially limited to unidirectional transmission through a body of water. Acoustical energy is generated at the surface of a remote object submerged in the water in response to impingement and absorption of the modulated radiation from the platform. Radiation of the acoustical energy generated adjacent the object is detected at the platform to extract data therefrom from which the location of the object relative to the platform is indicated. Patent applications. jhd

Descriptors:

• *INTERFACES
• *ACOUSTOOPTICS
• *ACOUSTIC DETECTION
• *PATENT APPLICATIONS
• *UNDERWATER OBJECTS
• ABSORPTION
• ACOUSTIC WAVES
• IMPINGEMENT
• MODULATION
• PROPAGATION
• RADIATION
• RESPONSE
• SURFACES
• TRANSMITTANCE
• UNIDIRECTIONAL
• WATER

Subject Categories:

• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE