Research Article
A Factor Graph-Based Attitude Determination Approach for Microsatellite with Star Sensor and Gyros
@INPROCEEDINGS{10.1007/978-3-030-94551-0_6, author={Xiwei Wu and Dechao Ran and Lu Cao and Bing Xiao}, title={A Factor Graph-Based Attitude Determination Approach for Microsatellite with Star Sensor and Gyros}, proceedings={Advanced Hybrid Information Processing. 5th EAI International Conference, ADHIP 2021, Virtual Event, October 22-24, 2021, Proceedings, Part I}, proceedings_a={ADHIP}, year={2022}, month={1}, keywords={Microsatellite Attitude determination Factor graph Smooth optimization Star sensor Gyro}, doi={10.1007/978-3-030-94551-0_6} }- Xiwei Wu
Dechao Ran
Lu Cao
Bing Xiao
Year: 2022
A Factor Graph-Based Attitude Determination Approach for Microsatellite with Star Sensor and Gyros
ADHIP
Springer
DOI: 10.1007/978-3-030-94551-0_6
Abstract
Attitude determination is an important part of microsatellite attitude control system. Its determination accuracy directly affects microsatellite’s attitude control performance. Hence, a novel attitude determination approach is presented in this work for microsatellites with star sensor and gyros fixed. The factor graph representing the probabilistic graphical model as a bipartite graph is applied to solve the attitude estimation problem. This allows multi-rate, asynchronous, and possible delayed measurements to be incorporated in a natural way. An incremental smoothing algorithm is then proposed to achieve optimal estimation. Simulation results are finally presented to verify that the proposed approach can significantly improve the attitude determination accuracy.
