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改进的单轴旋转SINS初始对准方法

DOI: 10.3969/j.issn.1006-7043.201312021

Keywords: 捷联惯导系统, 单轴旋转, 初始对准, 误差修正, 静基座, 失准角

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Abstract:

针对单轴旋转捷联惯导系统中,传统静基座对准的极限精度受器件误差制约的问题,在对静基座初始对准进行误差分析的基础上,提出了一种利用单轴转台实现的初始对准误差修正技术。利用单轴旋转捷联惯导系统本身具有的转动控制机构,通过转位操作,根据对准稳态误差在不同位置的投影关系计算出误差大小,并对系统加以补偿,从而提高系统对准精度。通过仿真试验可以看出:与两位置对准方法相比,该初始对准误差修正技术能够提高精度,并减少对准时间,同时,可以使水平失准角和方位失准角的对准误差显著下降。

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