Visual Presentation Of Guided Munitions Digital Simulation System

At present,the research on visual simulation technology by scholars at home and abroad has been applied in many aspects,such as flight simulation of guided weapons,combat use and so on.However,most of the methods used are numerical simulation,hardware in the loop simulation and experimental simulation,which can not present the principle or data intuitively and efficiently.If we can establish a simulation platform to show the principle,data,simulation results and other functions in real time on the basis of visual simulation,we can provide a more useful research scheme for the simulation and R ＆ D of guided weapons.According to the aerodynamic and motion characteristics of guided projectile,this paper defines the coordinate system used to describe its motion,analyzes the transformation relationship between each coordinate system,analyzes the force of projectile in a certain coordinate system,decomposes the motion of projectile into particle motion and rotation around particle,constructs their dynamic and kinematic equations respectively,and further obtains the external ballistic motion equations of projectile.On this basis,the Simulink simulation tool is used to establish the model in modules and package each sub model.Through the Matlab tool,the rigid exterior ballistic solution program of the guided projectile is converted into C + + code that can be called by QT to provide the flight parameters of the projectile movement,so as to obtain the correct flight orbit and flight attitude of the projectile.Then it discusses how to build the scene and set the model attitude in the OpenGL environment,establishes the shell model by using the method of digital driving to automatically generate the three-dimensional model,and studies the key technologies such as how to dynamically load the massive data,how to realize the real-time simulation,how to realize the visualization and human-computer interaction function,as well as the accelerated processing and model elimination in the simulation process.Finally,the visual simulation system of guided ammunition is established on the QT software platform.The visual simulation module,ballistic data real-time display module,ballistic curve drawing module and projectile model display module are designed and generated,and the visual presentation of the digital simulation system is realized.The simulation software intuitively shows the flight process of the projectile from launching to hitting the target,and observes the flight state of the projectile from different angles,which achieves a good display effect.