提出了一种用电影经纬仪等光测设备获得的图像确定火箭等空间轴对称目标的俯仰角和偏航角的新方法——中轴线法 ;并对此方法进行了误差分析。此方法利用了目标图像上的大量信息 ,测量精度高。采用了间接的方法提取目标的中轴线 ,避免了多相机目标匹配的问题 A new method, such as the central axis method, which is used to determine the pitch angle and the yaw angle of an axisymmetric object such as a rocket space, is proposed based on the images obtained by optical theodolite such as movie theodolite. The error analysis of this method is also made. This method uses a large amount of information on the target image and has high measurement accuracy. Using an indirect method to extract the axis of the target, avoiding the problem of multi-camera target matching