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
System and method for displaying a constant time selection context menu interface
Distortion compensation device, distortion compensation method, and radio transmitter
Cable exit trough with insert
Method of targeting hydrophobic drugs to vascular lesions
Data processing system, data processing method, and image forming apparatus
Image forming unit having agitating portion and image forming apparatus
System and method for transferring data in storage controllers
  Randomly Featured Patents
Capillary rheometer having disposable capillary tube
Draw latch
Battery tester with promotion feature
Furnace for producing steel from scrap steel and the like
Water filter housing cap
Perfluorinated surface-active oligomers and compositions for treating hair containing these oligomers
Air conditioning appliance
Apparatus for manufacturing microcrystal particles and manufacturing method for the microcrystal particles
Cigar
Method and apparatus for grinding the tip of a twist drill