空间旋转多光轴系统光轴平行性影响系统指向精度且校准难度高、耗时。基于空间旋转多光轴系统光轴校准原理, 获得了校准理论模型; 结合实验研究, 建立了高精度光轴校准方案; 以机械回转轴为基准, 粗调准和精调准结合, 以调整传感器安装面为粗调, 借助双光楔实现光学量级的精校准; 先校正可见光光轴与机械回转轴的平行性, 再保证激光光轴与机械回转轴的平行性, 最终保证可见光光轴与激光光轴的平行性。试验结果表明, 该校准方案精度高, 指标优于0.1 mrad, 可用于实际工程装调。

The optical axis parallelism of the spatial rotating multi-optical axis system affects the pointing accuracy of the system and is difficult and time consuming to calibrate.Based on the optical axis calibration principle of the spatial rotating multi-optical axis system, the calibration theoretical model was obtained. Combined with the experimental research, a high-precision optical axis calibration scheme was established. Taken the mechanical rotation axis as the reference target, the coarse and fine adjustments were combined , the coarse adjustment was performed for the sensor mounting surface and the fine alignment of optical magnitude was implemented by means of double wedges. Firstly, the parallelism between the visible light axis and the mechanical rotary axis was calibrated, then the parallelism between the laser axis and the mechanical rotary axis was guaranteed, and finally the parallelism between the visible light axis and the laser axis was guaranteed. The experimental results show that the calibration scheme is accurate and efficient,the index is better than 0.1 mrad, which can be used for practical engineering.