The Influence Analysis Of The Combined Attitude Measurement And Intelligent Decision-making Of Missile Terminal Sensitive Projectile

The attitude information in the steady-state scanning stage is of great significance to the research of missile-sensitive missiles.The attitude information mainly includes the altitude,attitude angle,rotation speed,and falling speed when entering the steady-state scanning state.A projectile target crossing model can be effectively established through the attitude information.Based on the steady-state scanning parameters,the scanning characteristics of the detection system can be studied and analyzed,which helps to improve the system's detection probability and recognition ability to the target,and then analyzes and calculates the fuze initiating warhead delay time to achieve maximum damage to the target.Based on the measurement principle of magnetometer,inertial component and barometer,this paper designs a missile-borne combined attitude measurement device.Firstly,based on the principle of geomagnetic orientation,the attitude angle calculation method of the terminal sensitive projectile in the geomagnetic field is studied,and the error compensation is performed by using the ellipse effect error model.Secondly,the quaternion method is used to study the solution method of the inertial component from the input information through the quaternion to the output of the attitude angle.Then the height and fall speed were calculated through realtime temperature and pressure changes of the barometer.Based on the attitude calculation of the magnetometer and the inertial component,an extended Kalman filter algorithm is designed to fuse the attitude information.Through simulation experiments and the UAV airdrop test,the feasibility of the device and algorithm is verified,and the fusion information is significantly better than the single sensor solution before.Next,the influence of steady-state scanning on intelligent decision-making is studied.Analyze the influencing factors of fuse-warhead coordination and establish a model for the intersection of the missile-sensitive bullet and the armored target.Based on the measured attitude,a steady-state scan analysis of the system is conducted.In combination with the actual situation of unstable attitude,the influence of unstable attitude scanning on target detection and recognition is studied,and then the influence of the unstable attitude on the delayed initiation warhead is analyzed.