提出了采用比例失效率模型和马尔可夫决策模型进行惯性导航设备维修决策控制。

A maintenance decision control method is put forward, which combines the proportional hazards model with Markov decision model.

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据军标显示和推演特性，其基本数据分为位置、属性和放大比例、旋转角度等。并把界面切分为军标索引区、地图导航区、标绘工作区。

According to peculiarity of military plotting display and infer and deduct, basic data was fallen into position, attribute and enlarging scale and revolving angle.

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陀螺仪的零偏漂移（biasdrift）误差和比例因子（scalefactor）误差直接决定了DR（deadreckoning）导航的精度。

The parameters of bias drift and the scale-factor are the key factors determining the precision of vehicle navigation.

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