In this paper, the methods of drawing contour line from terrain map, the vector of contour line and generating elevation data from vector data are discussed.

论述了从地形图中提取等高线、对等高线矢量化以及通过矢量数据生成高程数据的实现方法。

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The methods to obtain the Digital Terrain Model (DTM) from contour map by scan digitizing were studied.

本文还研究了通过扫描数字化等高线图建立数字地形模型的方法。

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Each missile comes with a terrain contour matching radar, which compares a stored map reference with the actual terrain to fix the missile's position.

BBC: Tomahawk cruise missile