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
Semiconductor fin device and method for forming the same using high tilt angle implant
Optical modulator module
(4949
(4933
Reception method and reception apparatus
Model matching for trace link generation
Calibration method for non-ideal transceivers
  Randomly Featured Patents
Injectable meclizine formulations and methods
Feeding carded fiber to an airlay
Tapered hemostatic device for use in conjunction with a catheter for alleviating blood leakage and method for using same
Automatic shut-off nozzle having an independent sensor arrangement for sensing the presence of liquid in vapor return means of the nozzle
Personal care compositions containing quaternary ammonium trihydroxy substituted dipropyl ether
Average responding RMS indicating type transducer
Gas phase alkylation-liquid phase transalkylation process
Data multiplexing method, field programmable gate array, and optical network
Automatic performance apparatus
Gussetted plastic bags having relief seals and method of making same