×

Phase step alert signal for GPS integrity monitoring

  • US 7,095,369 B1
  • Filed: 06/15/2004
  • Issued: 08/22/2006
  • Est. Priority Date: 06/15/2004
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for alerting a user of an integrity error in a global positioning system (GPS) signal transmitted from a transmitter in a global positioning system (GPS) satellite, the method comprising the steps of:

  • detecting an error in the global positioning system (GPS) signal;

    alerting the user of the error by shifting a phase of the global positioning system (GPS) signal from an initial value by a predetermined phase-shift amount; and

    returning, in the case that the detected error is corrected, the phase of the global positioning system (GPS) signal to the initial value.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×