针对瞄准镜在射击前后会有一定的变动量即零位走动量。文中介绍了一种测量零位走动量的方法, 该方法采用CCD测量总的零位变化量, 再通过光电自准直仪测量出重复装卡时产生的误差, 两者的差值即为纯粹的零位走动量。针对之前无法剔除重复装卡引起误差的方法, 该测量方法的优势在于可以测量纯粹的零位走动量, 通过对工作原理的介绍以及实验分析, 结果表明, 白光瞄具的纯粹零位走动量[σ]值不大于6.48″(0.03 mil); 该方法所测得的零位走动量精度高, 符合技术指标要求。

According to a certain variational momentum of the zero position in a sighting telescope before and after shooting, a method for measuring the variational momentum of the zero position is introduced. Charge coupled device (CCD) is used to measure the total variational momentum of the zero position, and then an optoelectronic autocollimator is used to measure the repeat installation error, the difference of these two measurements is the pure variational momentum of the zero position. Comparing to the traditional measurement method with non-eliminated repeat installation error, the advantage of the method is to measure the pure variational momentum of the zero position. Through the operation principle introduction and experiment analysis, the results show that the pure variational momentum of the zero position σ is less than 6.48″ (0.03 mil). The measured variational momentum of the zero position through the method has high accuracy and meets the requirements performance.