×

Method and apparatus for improving performance of an inertial navigation system having global positioning system corrections

  • US 6,631,323 B2
  • Filed: 05/23/2001
  • Issued: 10/07/2003
  • Est. Priority Date: 05/30/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. In an inertial navigation system (INS), at an INS location, of the type having inertial sensors coupled to a navigator, the navigator having an output at which position data is provided, said navigator output coupled to a differencing element to which an output, providing position data, of a global positioning system (GPS) receiver, at a GPS location, is also coupled, the differencing element providing GPS-INS position difference data that is coupled to a Kalman filter, the Kalman filter having an output from which correction position data is provided to the navigator, the improvement comprising:

  • a filter coupled to receive said GPS-INS position difference data and provide filtered position difference data; and

    means for adding said GPS-INS filtered position difference data to position data provided by said navigator to provide navigator corrected position data.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×