terrain illumination

For terrain observation and reconnaissance under natural starlight and moonlight illumination.

本夜视仪可供在自然星光和月光照明下进行地形观察和侦察.

Because the cloudy and sunny slope, the different terrain feature height influence as well as the sunlight illumination, presents the terrain feature camouflage and the shadow phenomenon.

由于阴阳坡、地物高低不等的影响以及太阳光的照射，出现地物遮蔽和阴影现象。

A new method of 3 D terrain model of illumination and dynamic display

三维地形模型光照和动态显示的新方法

A method for measurment of terrain scattering coefficient is presented. In addition, a calculable method of effective illumination area for microwave scatterometer is discussed.

本文主要探讨用微波地面散射计测量地物散射系数方法，还讨论了散射计的有效照射面积的计算方法。

In this paper, we summarize the key methods to the realization of 3D terrain Flythrough: DTM, terrain simplification, terrain illumination, texture mapping and terrain dynamic display, the selection of fly's track and the set of viewport.

论述了三维地形飞行浏览实现的各个阶段的关键技术：地形可视化的数字地形模型、地形的简化、地形的光照处理、纹理映射、动态显示，实现飞行浏览的轨迹设置、视点选择等。