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为检验扫描镜的动态性能,提出了一种动态自准直检测方法,该方法巧妙地将被检扫描镜和动态靶标上目标模拟反射镜纳入动态光电自准直仪准直光束的传播路径中,并构成闭合的光学自准直测量回路。设计了扫描镜动态性能的自准直检测装置,并利用自准直方法对动态靶标的自身精度进行标定。实验结果表明,动态靶标在360°的范围内的动态精度为±15μrad,可检测最大速度为80°/s,最大加速度为50°/s2。将该检测方法和装置应用于某型号空间激光照明成像跟踪系统中扫描镜的方位轴、俯仰轴独立性能的检验,获得了相应的静态轴系晃动、阶跃响应和连续跟踪等性能数据,为扫描镜的性能改进提供了参考和帮助。
In order to test the dynamic performance of the scanning mirror, a dynamic self-collimation method is proposed. The method cleverly incorporates the target simulated mirror on the scanned scan target and the dynamic target into the propagation path of the collimated beam of the dynamic photoelectric autocollimator , And constitutes a closed optical self-collimation measurement loop. The self-collimation detection system of scanning mirror dynamic performance was designed and the self-collimation method was used to calibrate the dynamic target’s own accuracy. The experimental results show that the dynamic target has a dynamic accuracy of ± 15μrad over 360 °, a maximum detectable speed of 80 ° / s and a maximum acceleration of 50 ° / s2. The detection method and device are applied to the performance test of azimuth axis and pitch axis independent performance of the scanning mirror in a model space laser illumination imaging tracking system. The corresponding performance data of static shaft sway, step response and continuous tracking are obtained. Scanning mirror performance improvement provides a reference and help.