Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and apparatus for determining location using signals-of-opportunity










Image Number 18 for United States Patent #8018383.

A signal-of-opportunity location device (SOLD) that may be situated in a complex radio propagation environment with multiple RF signal obstructions receives RF signals from a distant transmitter. The RF signals from the distant transmitter interact with obstructions in the propagation environment local to the SOLD. The local obstructions perturb the RF signals causing the RF signals to exhibit near field behavior in the complex radio propagation environment. The SOLD receives the locally perturbed signals. The SOLD detects signal characteristics of RF signal components of the received signals and compares these signal characteristics with reference data in a reference data store to determine the current location of the SOLD.








 
 
  Recently Added Patents
Vehicles with electric motor
Content output control device and content output control method
Printing device, printing system, program, and printing method for printing based on print data from a user authorized to issue a print instruction for the print data
Method and device for generating low-jitter clock
Credit flow control scheme in a router with flexible link widths utilizing minimal storage
Method for producing purified influenza virus antigen
Communication device and method for detecting a radio signal
  Randomly Featured Patents
Pin
Axially split clamp for push-on couplings
Sunglasses
Computer rack cart
Playback control methods and arrangements for a DVD player
Solid particle coupler dispersions for color diffusion transfer elements
System for remote loading of objects or files in order to update software
Methods and apparatus for eyeglass lens curing using ultraviolet light
Information processing apparatus, method for controlling thereof and computer program
Ink jet printhead having a unitary actuator with a plurality of active sections