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 and device for generating low-jitter clock
Method and apparatus for web crawling
Reading apparatus and reading method
Distylium plant named `PIIDIST-I`
Packaging for socks
Analysis of stress impact on transistor performance
Bi-level switching with power packs
  Randomly Featured Patents
Method of absorbing grease during cooking
Hydraulic connector apparatus and method
System to monitor the health of a structure, sensor nodes, program product, and related methods
N-heteroaryl-N'-(pyrid-2-ylsulfonyl)ureas, processes for their preparation, and their use as herbicides and plant growth regulators
Ethernet switch interface for use in optical nodes
Adjustable hanger assembly
Transventricular implant tools and devices
Toner particle having a hardnes of 6.0 to 24.0 mN and a circularity of 0.92 to 0.99
Sheet stack and dispenser package therefor
Roofing or sheathing