The UAV and the shipboard system form an aircraft- ship closed-loop control loop to simulate the fully automatic landing process of shipboard aircraft, achieve the integrated verification of key technologies for fully automatic landing guidance, and test the functions and performance of the shipboard system. The UAV is used as the aerial test node of a small closed-loop test in the shipboard system. Equipped with sea-based airborne test equipment, the UAV can complete such test missions as takeoff and landing on the land-based airport, and ship contact escape and go-round on the offshore moving base platform, and cooperate to complete the demonstration and verification of the fully automatic landing technology.