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提出了一种在自旋稳定卫星自旋轴与几何体轴重合或几乎重合时只利用太阳角计算自旋卫星姿态的方法。给出了方法的原理及适用范围。研究表明:定姿精度仅与太敏测量精度有关,减小了传统方法中太敏与地敏两项测量误差产生的误差,方法原理简单、精度高。由实际卫星数据的长期验证可知:方法能在卫星自旋轴与实际几何轴偏差较小时实现快速定姿,定姿结果满足要求。
A method of calculating spin satellite attitude using only the solar angle when the spin axis of the spin-stable satellite coincides with or nearly coincides with the geometric axis is proposed. The principle and scope of the method are given. The results show that the attitude accuracy is only related to the measurement accuracy of Taizimei, which reduces the errors caused by the two measurement errors of Taizhen and Gemin. The method is simple in principle and has high precision. The long-term verification of actual satellite data shows that the method can achieve fast attitude determination when the deviation between the satellite spin axis and the actual geometrical axis is small, and the attitude and posture results meet the requirements.