三维地形是虚拟自然环境中不可缺少的因素，也是虚拟仿真领域中视景系统的重要组成部分。
Three-dimensional terrain is one of important factors of the natural scenes in virtual environment. It is also a significant composition of view system in virtual simulation field.
实现了三维虚拟空防作战仿真系统，满足视景仿真和联邦成员交互控制的功能需求，具有较好的运行效率。
The 3d air defense combat simulation system is realized. This system meets the requirements of simulation and interaction of federation and has the better running efficiency.
介绍了雷达电子战实时三维视景仿真系统的框架设计，设计了基于分步调入的实时三维视景仿真驱动算法。
The frame design of real-time three-dimension scene simulation system in radar EW is described and the driving algorithm of the scene simulation based on folding according to step is given.
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