基于PSD的激光跟踪仪光电瞄准技术应用与研究

Application and Research of Laser Tracker's Optoelectronic Aiming Technology Based on PSD

光电瞄准与定位技术是空间运动目标动态跟踪测量的关键技术,起到目标捕获与运动位置偏差精确指向作用。基于光电位置传感器(PSD)对激光跟踪仪的光电瞄准和跟踪定位控制技术进行了分析研究与设计,提出了光电瞄准控制方案,设计了探测光路,分析了PSD误差修正与信号处理。经过实际样机测试,静态定位测量精度达到6μm,随机动态跟踪测量速度大于1 m/s。

Optoelectronic aiming and positioning technology is the key technology of space moving target＇s dynamic tracking measurement,it plays a role of target acquisition and motion position deviation＇s accurate aiming. Laser tracker＇s optoelectronic aiming and target control scheme were analyzed and designed based on photoelectric position sensor（ PSD）,optoelectronic aiming control scheme was presented,detection optical path was designed,and PSD error correction and signal processing were analyzed.Through actual prototype tests,system＇s static positioning measurement precision reached 6？ m,and the stochastic dynamic tracking measurement speed was greater than 1 m / s.