An IMU sensor fault detection method and apparatus for a multiple IMUs and GNSS integrated navigation system is disclosed. The method is based on a decentralized Kalman filter. In a navigation system in which multiple IMU sensors and GNSS sensors are integrated, a fault of an IMU sensor is detected through correlation analysis between fault detection test statistics of each sub-filter consisting of each IMU sensor.An IMU sensor fault can be detected and meet the navigation continuity probability requirement required by the system to support the operation of high-safety autonomous vehicles. By considering the correlation between the sub-filters, the continuity requirement assigned to each sub-filter is relaxed, and the relaxed continuity requirement has a direct effect on the improvement of the navigation system availability, contributing to the increase of the system availability.
IMU FAULT MONITORING METHOD AND APPARATUS FOR MULTIPLE IMUS/GNSS INTEGRATED NAVIGATION SYSTEM
2021-12-23
Patent
Elektronische Ressource
Englisch
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