Event-Triggered Moving Horizon Pose Estimation for Spacecraft Systems |
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Authors: | Shuangxi Li Hengguang Zou Dawei Shi Junzheng Wang |
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Abstract: | An event-triggered moving horizon estimation strategy is proposed for spacecraft pose estimation. The error dual quaternion is used to describe the system state and construct the spacecraft attitude-orbit coupled model. In order to reduce the energy consumption on spacecraft, an event-triggered moving horizon estimator (MHE) is designed for real-time pose estimation with limited communication resources. The model mismatch caused by event-triggered is finally solved by solving the cost function of the min-max optimization problem. The system simulation model is built in Matlab/Simulink, and the spacecraft pose estimation simulation is carried out. The numerical results demonstrate that the designed estimator could ensure the estimation effect and save spacecraft communication and computing resources effectively. |
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Keywords: | state estimation pose estimation event-triggered moving horizon estimation |
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