Fig. 1. Principle of laser tracker

Fig. 2. Servo tracking control scheme

Fig. 3. Difference in mirror movement between proximal and distal targets

Fig. 4. Flow chart of range adaptive tracking strategy

Fig. 5. Physical diagram of laser tracking system experimental device

Fig. 6. Range adaptive parameter fitting model

Fig. 7. PSD tracking error at different distances. (a) Tracking error at 3 m; (b) tracking error at 12 m; (c) tracking error at 19 m; (d) tracking error at 27 m; (e) tracking error at 37 m; (f) tracking error at 48 m

Fig. 8. Dynamic trajectory measurement experiment. (a) Target mirror trajectory coordinates; (b) fitted circle on the projection plane