The distance between incident Gaussian laser beam waist radius of the active laser reconnaissance/warning system and the secondary telescope mirror has an effect on the collimation ratio of the outgoing Gaussian beam. If the distance is much larger than the focal length of the secondary telescope mirror, the ratio of the primary telescope mirror and the secondary telescope mirror will be greater, and the outgoing Gaussian beam collimation will get better. Simulation was made for the situation that the distance is not much larger than the focal length of the secondary telescope mirror, and the influence of the telescope horizontal alignment errors on the Gaussian beam spot size of collimator was analyzed. The effect of the position deviation between the front focal plane of the primary mirror and the focal plane of Gaussian beam through the secondary plane on the laser alignment characteristic was also studied through numerical simulation. The result provides a theoretical basis for the design and alignment of laser alignment optical system in the active laser detection and alarm system.%探讨了主动式激光侦察告警系统入射高斯光束腰斑与望远镜副镜的距离对出射高斯光束准直倍率的影响.在满足入射高斯光束腰斑与望远镜副镜的距离远大于望远镜副镜的焦距的条件下,望远镜主镜的焦距与望远镜副镜的焦距的比值越大,出射高斯光束的准直效果越好.在不满足入射高斯光束的腰斑与望远镜副镜的距离远大于副镜的焦距的条件下,仿真分析了望远镜水平方向的装调误差对高斯光束准直光斑尺寸的影响.望远镜主镜的前焦面与高斯光束经过副镜后的焦平面的位置偏差对激光准直特性的影响进行了数值仿真.对于激光准直光学系统的设计、装调及其在主动式激光侦察告警系统中的应用提供了理论依据,具有一定的工程实用价值.
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