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基于多圆迭代和H∞滤波的捷联/天文定位算法研究

, PP. 717-720

Keywords: 天文导航,多圆交汇,组合导航,自适应,H∞滤波

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Abstract:

针对现有天文定位算法的缺点,提出一种多圆交汇迭代天文定位算法.该算法能够充分利用可观测恒星,同时能计算出定位误差协方差阵.针对提出的算法定位误差非线性的特点,提出了基于??∞滤波器的捷联/天文自适应组合导航算法,根据定位误差协方差阵实现量测自适应.仿真结果表明,天文定位算法模型准确,组合导航算法定位精度小于20m,定位误差稳定.

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