Research And Application In 3D Scene Simulation System For Lunar Softlanding

In the project of lunar exploration, visual simulation demonstrates the process of lunar softlanding with scene simulation technique. That can not only found an integrated information exhibition platform, but also accelerate and intensify understanding of changes of objects in simulation, and improve design level and automatization level of lunar exploration project. Based on research of the scene simulation technique, this paper applies scene simulation to demonstrate the process of lunar softlanding, and develops a 3D scene simulation system for lunar softlanding under distributed environment.Firstly, based on the characteristics of high real-time and interaction, this paper designs system target and function, analyzes technology course, advances holistic system frame, and confirms the development environment with MultiGen Creator/Vega Prime.Secondly, this paper analyzes 3D model in system and induces the blue print, based on the principle of 3D modeling, establishes 3D model of system with MultiGen Creator. The 3D model included: explorer, moon, lunar rover.Thirdly, considered the demands of system, this paper studies the theory of 3D terrain modeling, designs lunar terrain model. Based on Delaunay triangle net generating arithmetic, this paper establishes lunar terrain 3D model with lunar digital elevation data, which generated by lunar gray image.Finally, based on MFC/Vega Prime, this paper designs and implements the simulation program, develops a three-channel system project, and describes the details of implementation of simulation program. At last, in the distribute environment HLA, scene simulation system demonstrates the process of lunar softlanding.