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Attitude estimation for a spin stabilized spacecraft from Doppler shift

机译:多普勒换档旋转稳定航天器的姿态估计

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An optical sensor or a magnetometer has been used to determine the attitude of a spacecraft. However, a small spin stabilized satellite such as a sub-satellite of the Japanese lunar explorer SELENE has no attitude sensor, because the weight and electric energy are limited. An observed Doppler frequency shift results from the orbital motion and the spin of an antenna. Therefore, the attitude or the direction of the spin axis can be estimated from the analysis of Doppler shift caused by spin motion. There are some examples of attitude estimation from Doppler, but the nutation and an antenna phase pattern were not taken into account. In this paper, the new attitude estimation method is proposed considering the two effects. The simulation shows that the attitude can be estimated within the error of 0.5 degrees from Doppler data.
机译:光学传感器或磁力计已被用于确定航天器的姿态。 然而,小型旋转稳定的卫星,例如日本月球探险家Selene的亚卫星没有姿态传感器,因为重量和电能受到限制。 观察到的多普勒频移由轨道运动和天线的旋转产生。 因此,可以从旋转运动引起的多普勒频移分析来估计旋转轴的姿态或方向。 来自多普勒有一些姿态估计的例子,但没有考虑询问和天线相模式。 在本文中,提出了一种考虑两种效应的新姿态估计方法。 模拟表明,可以在多普勒数据估计误差0.5度的误差中。

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