Resources Contact Us Home
Frequency hopping data link approach to autonomous GPS denied relative navigation determination

Image Number 2 for United States Patent #8010287.

The present invention is directed to accurate GPS (global positioning system)-free relative navigation between an unmanned aerial vehicle (UAV) and a tanker aircraft. The UAV transmits a signal which is received by an antenna array at the tanker aircraft. Horizontal relative position of the UAV is determined by calculating range and bearing based on time and phase differences in the received signal. Vertical relative position of the UAV is determined by comparing the altitude of the UAV with the altitude of the tanker aircraft. The tanker aircraft then transmits a navigation solution based on the relative position of the UAV which is received by the UAV. The UAV may utilize the navigation solution transmitted by the tanker aircraft as a backup to a GPS determined navigation solution, in a GPS denied scenario, or in combination with an INS (inertial navigation system) determined navigation solution.

  Recently Added Patents
Integrated circuit packaging system with laser hole and method of manufacture thereof
Caprazene as a novel compound and derivatives thereof, and caprazol as a novel compound and derivatives thereof
System and method for enhanced artificial bandwidth expansion
Fuser member
Error correct coding device, error correct coding method, and error correct coding program
Mobile application for calendar sharing and scheduling
Synthesis of 8-amino boron dipyrromethenes having blue fluorescence
  Randomly Featured Patents
Optical-scanning system employing laser and laser safety control
Software debugger and software development support system for microcomputer operable to execute conditional execution instruction
Apparatus and method for illuminating articles of jewelry
Extraction of carboxylic acids from dilute aqueous solutions
Managing lean air/fuel transients in coordinated torque control
Astilbe plant named `Fireberry`
Closed space structures
Compositions, methods and devices for control and clean-up of hazardous spills
Electromagnetic pump stator frame having power crossover struts
Satellite broadcasting receiving system