基于特征点的地形数据存储模型

低空突防在现代战争中发挥着越来越重要的作用，而机载数字地图是现代自主式低空突防系统的一个关键子系统。突防区域内的三维地形数据是数字地图最重要的信息源，故数字地图子系统的成功构筑有赖于在机载环境下有效地存储三维地形数据。本文提出了一种基于地形特征点的三维地形存储模型，其中给出了地形特征点的提取方法及地形特征点的存储编码方式。研究表明，该存储模型可大大减小地形数据的存储空间，并有利于提高三维地形的显示速度。

Terrain elevation data storage model based on feature points

The low altitude penetration plays a more and more important role in modern war.The airborne digital map is a key subsystem of the modern autonomous low altitude penetration system.Because the three dimensional terrain data in penetration area is the most important information in the airborne digital map,the successful realization of the airborne digital map subsystem depends on the effective storage of three dimensional terrain data in the airborne atmosphere.A storage model of three dimensional terrain data based on terrain feature points is presented,including the obtaining method and the storage coding method of the terrain feature points.