New GPS/IMU fusion system improves the precision of GPS in vehicles in cities by up to 90%; implications for connected vehicles, autonomy and ITS
Green Car Congress
FEBRUARY 12, 2013
The system is a fusion of a GPS (or GNSS, Global Navigation Satellite System) and an Inertial Measurement Unit (IMU) integrating three accelerometers and three gyroscopes, based on a context-aided Unscented Kalman filter for navigation in urban conditions. The result of attitude estimation is fed back into the sensor refinement process.
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