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.

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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。

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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。

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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

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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。

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