Resources Contact Us Home
Method and system for detecting objects at or below the water's surface

Image Number 2 for United States Patent #5646907.

A method and system are provided for detecting objects at or below a surf 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.

  Recently Added Patents
Magnifying glass
Information retrieval system, information retrieval method, and information retrieval program
Light emitted diode
Video conference
Live-attenuated compositions for bacterial infections
Post-processing device and image forming system
Mobility management in a communications system
  Randomly Featured Patents
Permanent snap-on, twist-open cap and container
Treatment of toxicant-impregnated filter cake
Refractive-diffractive spectrometer
Oscillating tool
Diffraction grating lens and optical disk recording/reproducing apparatus using the same
Golf repair tool and ball marker presentation case
Flat gasket, in particular, cylinder head gasket
Method of forming contact plug of semiconductor device
Fishing lure with retractable and automatically extendable hook
Bioinformatics research and analysis system and methods associated therewith