Accession Number : ADD017914

Title :   Method and System for Detecting Objects at or Below the Water's Surface.

Descriptive Note : Patent Application, filed 9 Sep 95,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Maccabee, Bruce S

PDF Url : ADD017914

Report Date : 09 Sep 1995

Pagination or Media Count : 16

Abstract : A method and system are provided for detecting objects at or below a surface of a body of water. A focused beam of amplitude varying electromagnetic radiation, e.g., a pulsed laser beam, is directed through the air towards the water's surface. Acoustic energy under the water's surface is monitored for any acoustic return that may be generated in the water as a result of the beam being incident on either an object at the water's surface or the water's surface above an object.

Descriptors :   *PATENT APPLICATIONS, *ACOUSTIC DETECTION, *PULSED LASERS, *LASER BEAMS, *UNDERWATER, WATER, ACOUSTIC WAVES, SURFACES, ELECTROMAGNETIC RADIATION, AMPLITUDE

Subject Categories : Lasers and Masers
      Acoustic Detection and Detectors
      Hydrology, Limnology and Potamology

Distribution Statement : APPROVED FOR PUBLIC RELEASE