旋转靶标是一种室内检测光电经纬仪跟踪性能的常用设备。本文介绍了旋转靶标的基本组成结构和影响靶标运动特性(方位俯仰角速度、角加速度)的基本参数, 应用球面三角几何建立了旋转靶标的方位俯仰角坐标方程。依据方位俯仰角坐标方程分析靶标的特性参数对靶标运动特性的影响, 说明旋转靶标存在运动特性与实际跟踪目标特性不一致的问题, 得出应用旋转靶标评价光电经纬跟踪性能是不全面充分的结论。

Rotating target is the common equipment used to test tracking performance of photoelectric theodolite indoor. With the aim to study the impact of rotating target characteristics on target tracking performance of photoelectric theodolite, we introduced the basic structure of rotating target and the core parameters which can impact the motion features of rotating target. Using the method of spherical trigonometry, we established the coordinate equation for the angle of azimuth and elevation. According to the coordinate equation, we presented how the parameters of rotating target take responsible for the target motion features. Finally, we demonstrate the difference of motion features between rotating target and actual tracking target; suggesting that using rotating target to test the tracking performance of photoelectric theodolite is inaccurate.