Fig. 1. Schematic of laser spots of LOLA on lunar's surface and FOV of detector^[11]

Fig. 2. Relationship between coefficient C of detector 3 in an orbit and time when LOLA is in the moon's daytime

Fig. 3. Schematic of overlapping area between laser spot on lunar's surface and FOV of detector

Fig. 4. Relationship between relative energy received by detector and offset distance

Fig. 5. Flow chart of estimating laser pointing error

Fig. 6. Introduction to Aestuum area. (a) Location of Aestuum area on map; (b) optical image of Aestuum area

Fig. 7. All tracks during process of surveying. (a) Distance between spot 2 and actual receiving FOV 3; (b) distance between spot 5 and actual receiving FOV 4

Fig. 8. Method of laser pointing error estimation based on distance from spot to actual receiving FOV

Fig. 9. All tracks in same night. (a) Distance between spot 2 and actual receiving FOV 3; (b) distance between spot 5 and actual receiving FOV 4