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System for standard positioning service and precise positioning service cooperative operation

  • US 20090135054A1
  • Filed: 09/04/2007
  • Published: 05/28/2009
  • Est. Priority Date: 12/24/2003
  • Status: Active Grant
First Claim
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1. A system for clear and secure cooperative operation comprising:

  • a secure receiver to process an secure data portion of a first positioning signal; and

    an clear receiver to process an clear data portion of a second positioning signal, wherein the secure receiver and the clear receiver are communicatively coupled such that the secure data portion from the secure receiver is cross validated with the clear data portion from the clear receiver thereby corroborating the accuracy of either the first positioning signal or the second positioning signal.

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