Fig. 1. LFC synchronous mode image. (a) Light spot image in bare mountain area; (b) light spot image in forest area

Fig. 2. Grayscale histogram of spot ROI region under different noise conditions. (a) Low noise; (b) medium noise; (c) high noise

Fig. 3. X-direction and Y-direction statistical image of the six-track quality spot center

Fig. 4. X-direction contrast of orbit 2107 spot center. (a) All spot X position on orbit 2107; (b) all quality spot X position on orbit 2107

Fig. 5. Typical LFC image. (a) Image 339; (b) image 610; (c) image 621

Fig. 6. Fitting line in the X direction of orbit 2107 spot center

Fig. 7. X-direction contrast of orbit 2107 in optical axis surveillance camera

Fig. 8. X-direction spot center of orbit 4871 and 4947

Fig. 9. Transit areas of orbit 4871 and orbit 4947

Fig. 10. All spot centers on orbit 4871 in X direction

Fig. 11. Emits laser energy changes of orbit 4871