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
Method and apparatus for exercise monitoring combining exercise monitoring and visual data with wireless internet connectivity
Method and apparatus for transmitting and receiving a signal in a communication system
Efficient forward ranking in a search engine
Content distribution system, mobile communication terminal device, and computer readable medium
Method and system for calibrating laser profiling systems
Approaching object detection system
Methods for non-linear image blending, adjustment and display
  Randomly Featured Patents
Floating type magnetic head having a magnetic gap for recording tracks at the outer periphery of a magnetic disk
Treatment of fluorocarbon feedstocks
Method for manufacturing a thin film head
Cool down temperature control system for clothes dryer
Wipes container
Hardware implementation of a Galois field multiplier
Plant gene construct encoding a protein capable of disrupting the biogenesis of viable pollen
Hypolipidaemic compositions
Actuator using magnetic force, and drive device and sensor using the same
Method of making stacked textured container capacitor