地球云场景的模拟仿真

为了研究全球的大气运动情况,需要不断观察地球云层的分布状态和运动趋势。运用计算机技术建立了基于八面体剖分法构造的球面网格模型;以全球高程数据为基础进行了三维地球的模拟;利用改进的分形几何算法生成了逼真的静态与动态云图;通过球面纹理映射实现了云场景在球面上的融合;最终给出了逼真的全球云场景的模拟。仿真模拟算法在虚拟战场环境模拟和全球气象环境再现等软件中进行了应用,模拟仿真效果满足了系统的需要。

Simulation of Cloud Field on Earth

For research of atmosphere movement status on the earth,the distributing status and moving trend of clouds need to be observed.The spherical grid model based on the triangulation octahedral was established by using computer technique.Simulation of the earth 3D was realized on base of the global elevation data.The optimization algorithm of fractal geometry created a true static and moved cloud.By texture mapping on surface sphere,and fusion of cloud field was generated.Finally,the simulation reality cloud field on the earth was proposed.The simulation algorithm has been applied on the software of virtual battlefield environment simulation and the global weather environment reproduction.The result of simulation can meet the practical requirement of the simulation system.