Wave-off judgment research of carrier-borne aircraft in the landing process led by automatic landing system is made and the conception of security window in automatic Landing of the carrier-borne aircraft is proposed. Through the study of carrier-borne aircraft's landing process under the guidance of automatic landing system, considering on the impact from typical air-wake and aircraft carrier motion on carrier-borne aircraft's automatic landing, this paper analyzes aircraft's automatic safety window landing position, and calculates the boundary of safety window.

The response ability and robust performance of carrier based aircraft landing control system are very high. The existing literature has not considered the discrete sampling of carrier landing control, but in fact the discrete sampling has a great influence on the control performance of the system. In this paper, the error state of the discrete linear system is expanded, and the controller is obtained from the error expanded system. This method is used to design the landing continuous dynamics optimal controller under sampling. The simulation results show that the system has good control effect on initial height deviation correction, ship air wake suppression and model perturbation suppression. And its steady-state accuracy, dynamic performance and robustness are much stronger than the carrier landing engineering PID control, even though PID control has no sampling in simulation. The backside area of landing drag curve and the direct force effect of the elevator will each cause two non-minimum phase zeros for the aircraft dynamics. The sampling optimal control method can eliminate the two zero points, while the PID control can only eliminate the former zero point.

The aim of this study is to analyze the movement model of aircraft carrier and stern flow model under the influence of marine sport. Also, we focus on the influence of marine sports and aft flow on the landing error of the carrier-borne aircraft under the guidance of the automatic landing system in different sea state level by numerical simulation and calculation. The analysis result is meaningful to the aircraft carrier due to the fact that environmental factors have a great influence on the error of carrier-borne aircraft landing on aircraft carrier, especially; marine sports and aft flow always affect the movement of an aircraft carrier and landing process of carrier-borne aircraft.