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基于HMM/KF滤波的捷联惯组快速标定方法

, PP. 567-570

Keywords: 捷联惯组,零位偏置,六位置标定,粗对准,隐式马尔科夫模型,卡尔曼滤波

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Abstract:

提出一种快速标定捷联惯组常值零偏的六位置测试法.首先在传统解析式粗对准的基础上引入HMM/KF滤波器,利用HMM/KF滤波器滤除对准环境中的干扰噪声,实现捷联系统粗对准;然后分析利用粗对准的对准精度与惯性器件误差之间的关系,推导出求取捷联惯组常值零偏的数学表达式.对比实验分析结果表明,采用滤波技术的对准方法能够提高方位对准精度,而且能够快速有效地标定和补偿上一标定阶段残留的惯性器件常值零偏,改善导航性能.

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