By using 1:500 topographic map updating 1:2000 topographic through generalization of automatic cartography, decrease the burden of UBGIS data revision.
2
论述了井下开采矿井矿用地形图的更新方法。
This paper discusses the renewable method of mine topographic map of underground mining.
3
同时还对“3s”技术在地形图快速更新中的综合运用进行了探讨。
At the same time it has also researched on how to apply the "3s" technology to the fast updating of topographic maps synthetically.