大战场局部地表面视景仿真

分析了大视景战场内局部地表面变化的特点，建立了描述大视景战场的一级坐标系和描述战场内局部地表面变化的二级坐标系。对二级坐标系下的土壤表面的形状特征进行了分析，在不影响土壤表面的视觉效果前提下，对土壤表面的形状特征进行了简化处理。以工兵战场仿真中挖土作业时土壤表面视景仿真为例，介绍了纹理映射技术在模拟土壤变形过程中的运用。仿真效果表明，该方法有效地减少了生成大视景战场仿真画面时的计算量，画面的实时性和逼真性达到较好效果。

Scene Simulation on the Part Surface of Ground in Big Battlefield

The characteristics are analyzed on partly changed surface of ground in big scene battlefield. It is established that the first coordinate to describe big battlefield and the second coordinate to describe part surface of ground in big battlefield. By analyzing the characteristic shapes of surface soil in the second coordinate, the characteristics of surface soil are simplified while not affecting the visual effect of the soil surface. The application technique of texture mapping on imitating the soil surface is introduced for an example of the soil surface changed in the engineering corps battlefield. The application results show that the calculation work for making scene battlefield is reduced, and that real-time and reality of scene simulation come to ideal results.