Resources Contact Us Home
Method of mixed data assisted and non data assisted navigation signal acquisition, tracking and reacquisition

Image Number 2 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
Systems, methods, and computer readable media for providing information related to virtual environments to wireless devices
Synchronous rectifier network unit circuit and method
Method for improving the performance of browser-based, formula-driven parametric objects
Controlling generation of debug exceptions
Method and apparatus for monitoring for a radio link failure
Transferring storage devices within storage device testing systems
Block copolymer nanoparticle compositions
  Randomly Featured Patents
Collapsible urology drain pan assembly with retention mechanism
Method of operating tonometer
Gas generating composition for air bags
Method and apparatus for generating images using a color field sequential display
Pontoon vehicle
Collapsible light fixture with resilient mounting
Combination key ring
Method to enable user selection of segments in an instant messaging application for integration in other applications
Automated synchronization of orders represented in multiple markets
Structural support for char derived from intumescent coatings