Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Method for producing semiconductor substrate, semiconductor substrate, method for manufacturing electronic device, and reaction apparatus
Charging current control method and charging system
Administrable compositions
Disk drive to enable defect margining
Method for producing a sulfonated polyarylether block copolymer
Method and apparatus for coordinating hopping of resources in wireless communication systems
Decision management system and method
  Randomly Featured Patents
Apparatus for position detection using multiple antennas
Collagen matrix beads for soft tissue repair
Voice frequency response system
Method of making an electrical switch and chemically milled contacts
Multi-saddle rack
Front-end gateway unit for remote ecological environment monitoring system
Turn-on controller for switch-mode regulator
Opto-electronic semiconductor device including an integrated mode transformer
Increasing lifespan by modulation of WWP-1 and UBC-18
Methods and therapeutic compositions for treating cystic fibrosis