Research On Performance Analysis Of Terminal Guidance And Compensation Method Baesd On Lateral-Jets

The main research of this thesis is focused on the terminal guidance of endo-atmospheric airdefence missile. The main researches and achievements are as follows.First, the model of the terminal guidance system is constructed, and the terminal guidance precision of the conventional aerodynamic control missile is analyzed by using the adjoint method. The line-of-sight rate is analyzed for the influences of the airframe, radome effects and target glint.Second, the compensation of the miss distance based on trajectory-control lateral-jets is researched. Endgame controlling with trajectory-control lateral-jets is proposed to compensate the miss distance, which is predicted based on the information provided by the seeker before its shutdown.Then, the terminal guidance precision of the blended attitude-control lateral-jets and aerodynamic control system is analyzed. The structure of flight control system is given. The transfer functions of flight control system are derived, and the time constants are compared, based on which, the guidance precision of the blended control system is analyzed.At last, system simulation and analysis are conducted. In order to validate the effectiveness of the lateral-jets, The simulation models are constructed and simulation is conducted. The results show that the guidance precision is improved with the application of lateral-jets.