The Anti-radiation Missile Distributed Virtual Simulation System Research

In modern battlefield conditions, missile system training simulation has become the important means of the latest missile weapon development and research. For missile weapon performance examination also has the extremely vital significance. This article mainly from the angle of system analysis and design, take the anti-radiation missile composite guidance as background and carry out the research. In view of the characteristics of the composite guidance anti-radiation missile, develop systems research in the area of application requirements and solutions, design anti-radiation missile composite guidance in distributed virtual simulation platform, and emphatically from the visual angle of virtual scene research and construction of large scale terrain accelerated drawing method.Composite distributed virtual simulation system combined the missile attitude dynamics, kinematics with guidance control theory and computer simulation technology formed the combination of missile trajectory design, system development, simulation validation, demonstration in the integration of comprehensive simulation environment. The training system simulation provide visualized results, assist complete flight design, verification, demonstration and determination. System using object-oriented modular design thought, designed distributed simulation system structure based on network. And focused on missile movement modeling, the implementation technology of virtual scene. In the simulation system, multiple nodes execute harmoniously, provide visualization output. It's an interactive, artificial control dynamic simulation system.Aiming at processing the variety of different precision, data forms of compound data in missile guidance system, put forward the simulation platform, missile composite guidance based on the high level architecture, designed the distributed simulation system frame, and combined with the actual situation of missile composite guidance, from function module, the system performance, introduces the system structure, the design and development processes. Illustrates the simulation system dynamic model to join, simulation function execution, interactive communication problem solutions between subsystems, Established the distributed simulation system composed of federal members, meanwhile designed subsystem interactive way based on HLA rules.Missile trajectory simulation is a very complicated process, Based on the simulation requirements, this article analyzed of kinematics and dynamics characteristics of the missile, and proposed simplified missile trajectory simulation model, through analysing the missile guidance control system composing and feedback role established control circuit model, control missile movement, real-time output missile position and posture, speed, etc.The real-time rendering of 3d terrain is the important content of the scene visualization. Around missile training virtual simulation system construction, this article studied missile simulation system virtual battle environment modeling. Analyses the existing terrain modeling drawing method, put forward the method of Using different data formed realistic terrain,and proposed accelerated terrain drawing method.In not decrease graphic display quality premise, Research and applicate some efficient model scene organization, data processing and graphics drawing method, enhance rendering speed, solve big data set scene simulation contradiction in rendering quality, complexity and the speed.Based on multi-resolution model, to optimize the terrain rendering, proposed the big range terrain view-dependent multi-resolution representation and surface features keep DVMR algorithm. The algorithm adopted four quadtree structure, with the different area, according to view point and surface roughness using different terrain levels.Algorithm improved the model vertex error evaluation method, using screen approximation error metric, makes the computational complexity achieve real-time simplified requirements. Compared with the general method, the algorithm can guarantee terrain local characteristics to real-time rendering requirements. Meanwhile algorithm considered the boundary constraint conditions, eliminate the cracks between adjacent terrain blocks, realized the smooth transition between terrain blocks. Apply simplified virtual terrain in missile simulation, on the premise of keeping the model appearance, reduced the triangle model in the scene, and achieved the goal of generate different details hierarchical mode.Distributed missile virtual simulation provides the simulation platform for system performance verification and study, this paper established the ballistic simulation, multi-mode subsystem guiding, visual simulation etc. simulated the multi-mode composite terminal-guidance missile attack target ship. The system creates the federal executive process and time promoting mechanism, simulate the missile trajectory and composite guidance capture target process. System based on VC++ and Vega,OpenGL realized the large scope scene virtual dynamic simulation.