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
Process for producing .beta.-sialon fluorescent material
Method for operation of multi-layer-multi-turn high efficiency inductors
White polyester film and surface light source therewith
MEMS structure and method for making the same
Carbonate and carbamate modified forms of glucocorticoids in combination with .beta..sub.2 adrenergic agonists
Client network device and method for adjusting parameters of client traffic windows based on discovery of other network devices
Multi-state DC-DC converter having undirectional switches
  Randomly Featured Patents
Clamping pin
Thermoplastic and low modulus thermoplastics for appliance handles
Oxide/nitride stacked gate dielectric and associated methods
Novel spiro-oxazolidinediones
Contactor for testing integrated circuit chips mounted in molded carrier rings
Post chemical mechanical polish (CMP) planarizing substrate cleaning method employing enhanced substrate hydrophilicity
Form for use in fabricating wall structures and a wall structure fabrication system employing said form
Waste plumbing installation and fittings therefor
Faucet
Information processing apparatus and method