Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Harbor radio navigation system










Image Number 6 for United States Patent #4071845.

A radio beacon navigation system wherein buoys placed at predetermined locations in a harbor or channel transmit identification signals. Every buoy is assigned a unique carrier frequency upon which is transmitted a signal capable of identifying the buoy. Each buoy is shown on harbor charts according to the unique properties of its signal. Radio receiving means carried aboard vessels navigating through the harbor or channel include means for determining the identity of the buoy from which signals are received and the direction from which the received signals emanate.








 
 
  Recently Added Patents
Method for producing a sulfonated polyarylether block copolymer
Method of preparing MgB.sub.2 superconducting wire and the MgB.sub.2 superconducting wire prepared thereby
Monitoring and correcting upstream packet loss
Vehicle and communication monitoring
Pulsed plasma with low wafer temperature for ultra thin layer etches
Mineral, nutritional, cosmetic, pharmaceutical, and agricultural compositions and methods for producing the same
Integrated circuit package system with bonding lands
  Randomly Featured Patents
Aggregating location accuracy data to estimate accuracy of a wireless locating system
Method and system for offset estimation and alignment
Missile warheads
Chime generating circuit
System and method for building a target operating system from a source operating system
Seat
Topology aware route control
Weight-discriminating bird feeder
Non-cyclic hindered ketones as perfuming ingredient
Method and apparatus for verification of a gate oxide fuse element