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- W1515679726 abstract "Future space missions call for unprecedented levels of autonomy, reliability and precision, thereby increasing the demands on spacecraft failure detection, identification and compensation (FDIC) systems. We address the problems of spacecraft attitude determination (AD) and FDI for sensors and actuators by developing: 1) a nonlinear extended Kalman filter (EKF) which does not require a small angle approximation; 2) a method for online tuning of noise covariances; and 3) a multi-hypothesis extended Kalman filter (MEKF) for detection and identification of sensor (gyro, Star tracker) and actuator (thruster) failures. A nonlinear EKF is designed for AD using angular rates, quaternions and the gyro biases as state variables. It is shown to provide more accurate estimates of the attitude angles and can be used for the detection and removal of bad gyro and Star-tracker measurements. The MEKF approach is used for the detection and identification of gyro, Star-tracker and thruster failures. Gyro failures are the quickest to detect and identify, followed by thruster and star tracker failures." @default.
- W1515679726 created "2016-06-24" @default.
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- W1515679726 date "2002-11-19" @default.
- W1515679726 modified "2023-09-27" @default.
- W1515679726 title "Adaptive Kalman filtering, failure detection and identification for spacecraft attitude estimation" @default.
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- W1515679726 doi "https://doi.org/10.1109/cca.1995.555664" @default.
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