Autonomous navigation and guidance for pinpoint lunar soft landing

An autonomous navigation and guidance system scheme for pinpoint lunar soft landing is studied in this paper. First, the descriptions of outline of lunar soft landing process are provided. Second, a GNC system scheme for lunar soft landing spacecraft is described. Third, the autonomous navigation based on measurement-updated IMU for lunar soft landing is presented. Fourth, the autonomous explicit guidance for lunar soft landing is provided. Finally, the presented navigation and guidance method are validated by using the simulation and some conclusions are drawn.