Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method of mixed data assisted and non data assisted navigation signal acquisition, tracking and reacquisition










Image Number 4 for United States Patent #7859456.

The present invention provides systems and methods for enabling a navigation signal receiver to perform both data assisted and non-data assisted integration to provide better integration during signal acquisition, reacquisition and tracking. In data assisted integration mode, a receiver uses known or predicted data bits to remove the modulated data bits of a received signal prior to integration. In non data assisted integration mode, when the data bits are not known or predictable, the receiver uses an optimal estimation or maximum likelihood algorithm to determine the polarities of the modulated data bits of the received signal. This may be done by determining which of various possible bit pattern yields the maximum integrated power. When the modulated data bits are not known or predictable over a limited range, the receiver carries out data assisted integration over the known or predictable data bits and additional non data assisted integration.








 
 
  Recently Added Patents
Hydroxyl-terminated thiocarbonate containing compounds, polymers, and copolymers, and polyurethanes and urethane acrylics made therefrom
Lock
Lightning-protective explosion-preventive fastener
Fluorine-free fused ring heteroaromatic photoacid generators and resist compositions containing the same
Therapeutic rinse in a self-heating package
Query optimization with awareness of limited resource usage
Server chassis
  Randomly Featured Patents
Epoxy-polysiloxane polymer composition
Sealer for side gusseted bags
Inbred maize variety PHCGM
Cutting machine
Garment waistband
Photosensitive material processor
Processes for producing branched compounds via condensation and hydrogenation
Universal seismic data acquisition module
Supported fischer-tropsch catalyst and method of making the catalyst
Multifolded composite tape for use in cable manufacture and methods for making same