提出了一种用于火炮炮膛轴线偏离射面的角度测量的数字化测试系统，该系统基于激光跟踪仪空间点坐标测量原理，通过对火炮身管指定点三维坐标的测量，结算出调炮前后空间直线方程，从而计算出火炮偏离角，并针对目前GJB方法对火炮炮膛轴线偏离射面的偏离角度测量方法中存在的精度不高、效率低、工作人员多、结构分散等问题进行了分析。与现行GJB方法进行测量实验比较，实验数据表明使用该方法对火炮偏离角进行测量，效率和精度都有明显提高。

A digital test system was presented, used to measure the angle of shot gun bore axis deviates from exit surface. Based on the principle of laser tracker space coordinates measurement, by measuring the 3D coordinates of the gun barrel, the system accounts for the linear equation of space before and after the adjustment of gun, thus the deviation angle of the gun was calculated, and the problems of low precision, low efficiency, too much staff and structure dispersion were analyzed in the measurement method of gun bore axis deviation angle from the exit surface in view of the current GJB method. Comparing the experimental measurements with the current GJB method, the experimental data show that by using this method to measure the deviation angle of the gun, the efficiency and accuracy are improved obviously.