为了能够准确的测量出单轴光电测量系统的视轴，根据主光轴上的点在线阵CCD 上的成像位置不随物距的变化而改变这一特性，提出了一种利用合作目标测量视轴的方法，并对其进行了理论推导。把合作目标固定在某一位置上，把单轴光电测量系统放置在可移动的水平平台上，移动单轴光电测量系统只改变单轴光电测量系统到合作目标之间的距离，不改变单轴光电测量系统的光轴与合作目标的高度差。最后利用某一实际光电测量系统和合作目标做了实验验证。实验结果表明，利用该测量方法的测量精度可以达到-0.84″。

In order to accurately measure the sight axis of the single axis photoelectric measuring system, based on the invariability of the point on principal optical axis of linear CCD imaging position when the object distance varies, a measurement method of sight axis on cooperative target is presented, and its theoretical derivation is done. Fix the cooperative target in a position, and place the uniaxial optical measuring system on a movable horizontal platform. While mobile the uniaxial optical measurement system follows the slideway, it will only change the distance between the optical measuring system to cooperative target, without changing the height between the axis of optical and cooperation target. Finally, conduct an experiment use of a practical photoelectric measuring system and cooperation objectives. The experimental results show that the accuracy of the measurement method can achieve -0.84".