介绍了火箭炮摇架水平台与基准管轴线一致性的光电检测技术原理和方法。采用1”激光自准直仪和四象限硅光电池确定基准管轴线，由2”电子水平仪测量并显示基准管轴线与摇架水平台的夹角值和倾斜方向，该测量值可实时传送给计算机处理。设计了包括炮口定位瞄准装置和摇架定位调整装置在内的测量系统，并进行了精度分析，其测量精度为σ≤11.8”．

The photoelectric detection principle and method of the uniformity between the cradle hori?zontal platform and the fiducial barrel axis of the rocket were presented. It is the procedure of the method that the fiducial barrel axis is established by the laser autocollimation with the precision of I" and the silicon bell of four quadrants, the angle included between the cradle horizontal platform and the fiducial barrel axis of the rocket and the inclined aspect are measured and displayed by the electro-gra- dienter with the precision of 2〃 and sent to the computer ana processed in real time. The measurement system including localized calibrating equipment in the front of the barrel and the localized adjusting equipment in the back of the barrel was designed. The measurement accuracy of the system was ana?lyzed, which is σ≤ 11.8".