Research On Seeker, Guidance And Control Technology For Loitering Munition

Based on the research status and development trend of the domestic and foreign loitering munition, combined with the development requirement analysis of beforehand research and model project in China, this paper studied the key technologies of seeker,guidance and control system for loitering munition.The research background of this paper and the research status and development trend of the domestic and foreign loitering munition were reviewed, the key technologies and relevant technical problems of loitering munition, seeker, guidance and control system of loitering munition were summarized in detail.Relevant coordinates of missile and seeker were difined, and their transformational relations were deduced. The 6 DOF model was established. Command model and transfer fuction were exhibited. These contents given above were the premise of the research in this paper.Aimed at the combat characteristics of loitering munition, this paper maily studied the key technologies of seeker which including searching potential, scaning patten and target positioning. The research results could be instructional to engineering practice.The typical flight process of loitering munition was analyzed, and the guidance and control system was designed in the following. The coupling effect of loitering munition was briefly studied, and that the autopilot and pole assignment method of two-loop autopilot were studied. Three-channel-autopilot of loitering munition was designed with the classic control method. It was concluded that coordinated turn was very necessary for BTT missile. Some common methods of coordinated turn were discussed including their advantages and disadvatages. Furher more, a coordinated turn method which contains compensation of kinematics coupling was put forward.The simulation results showed that this method was very helpful.To solve trajectory tracking requirement of loitering munition, a new method based on navigation coordinates was put forward. The basic idea and specific design process of trajectory tracking were provided. The 6 DOF simulation results showed that the method given in this paper was effective. Meanwhile, it was indicated that the guidance and control system designed above worked.