Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate
2006-09-05
2006-09-05
Camby, Richard M. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
C701S221000, C073S488000
Reexamination Certificate
active
07103477
ABSTRACT:
An exemplary inertial measurement apparatus incorporates self-calibrating bias correction signals. First and second inertial instruments generate respective input signals representative of an inertial attribute to be measured. A bias estimator generates first and second bias correction signals. First and second summation nodes receive the respective input signals and the respective first and second bias correction signals. The first and second summation nodes provide respective summed signals to the first and second inertial instruments. The first and second inertial instruments generate respective output signals representative of a value of the inertial attribute based on the respective summed signals. The bias estimator calculates the first and second bias correction signals based on first and second measurements made during respective first and second time intervals where a sign of one of the first and second bias error signals changes from one state during the first time interval to the other state during the second time interval.
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Camby Richard M.
Carmen B. Patti & Assoc. LLC
Northrop Grumman Corporation
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