对于地形模型的构造有多种方法,如:规则格网法(GRID)、不规则三角网(TIN)和混合法(GRID-TIN)等.GRID模型具有较小的存储量和简单的数据结构,便于存储和管理.
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Use special calcium lead tin alloy plate grid, more resistant to corrosion, charging accept ability is better.
使用特殊的钙铅锡合金板栅，更耐腐蚀，充电接受能力更好。
Terrain data is organized by grid, the article adopts height weighted average algorithm of elevation based on grid network, to extract feature point of TIN terrain.
采用网格索引来组织地形数据，利用反距离高程加权平均值算法，提取TIN地形的特征点。
Two kinds of main data structures of the DTM are briefly introduced in the paper, which are irregular net of triangulation (TIN) and regular rectangular grid (grid).
文中简要介绍了DTM的两种主要的数据结构：不规则三角网(TIN)和规则矩形格网(GRID)。
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