针对火炮身管上标记两个点检测调炮精度受制于单个空间点坐标测量精度的问题，提出通过增加身管上标记点的冗余数量来提高调炮精度的检测方法。应用最小二乘原理对多个空间点进行直线拟合，并采用Monte Carlo方法对身管指向的测量精度进行分析。结果表明：标记4个点、5个点、6个点和7个点与标记2个点（传统方法）相比，其身管指向的测量精度分别提高了约6豫、18豫、19豫和21豫。该方法适用于对调炮精度检测要求较高的场合，综合考虑工作效率和测量精度这两个因素，推荐标记5个点测量身管指向。%According to the problem that gun rotated precision detection of two markers on the gun tube is bound to the accuracy of single spatial point coordinate measurement,a method of improving the gun rotated precision detection by increasing the redundancy numbers of marker on the gun tube is put forward. The least square method is applied in linear fitting for multipoint in space,and Monte Carlo method is adopted to analyze accuracy of the gun tube direction measurement. The result shows that the accuracy of the gun tube direction measurement of smarting four points,five points,six points and seven points approximately improved by 6%,18%,19%,21% respectively in compared with two points (traditional method). This method is suitable for the application which requests high gun rotated precision detection. Therefore,considering such two factors of working efficiency and test precision,we suggest marking five points on the gun tube for measuring the gun tube direction.
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