Abstract
This paper investigates the attitude estimation problems for nanosatellite with micro sensors based on decentralized information fusion. To improve the precision of attitude estimation for nanosatellite, an attitude estimation decentralized fusion (AEDF) scheme with micro sensors is designed, which is suitable for nanosatellite in view of limited energy and low power consumption. This scheme can fuse the measurements of multiple sensors to compensate flaws in any single sensor. In AEDF scheme, an improved approach of information distribution is designed, which can not only obtain high-precision attitude estimation information, but deal with the singular problem in the process of attitude estimation. Moreover, a new fault detection factor is proposed to make nanosatellite attitude determination system have a certain fault tolerance. Extensive comparative results are given to show the effectiveness of the designed nanosatellite AEDF scheme.
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