By using 1:500 topographic map updating 1:2000 topographic through generalization of automatic cartography, decrease the burden of UBGIS data revision.
通过地图自动缩编利用1:50 0地形图更新1:20 00地形图,减少城市基础地理信息系统的更新负担。
By making use of new technique new instrument and new processing mode, alleviate the expenses of UBGIS data revision, and increase the project speed of UBGIS data revision.
利用新技术新仪器和新的作业模式减轻城市基础地理信息系统的更新费用,提高城市基础地理信息系统的更新速度。
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