描述地球表面的基础地理信息数据是国家空间数据基础设施建设中的重要组成部分。
National Digital Geospatial data Framework is the important component of National spatial data infrastructure, and will serve widely to ITS.
空间数据交换标准是国家空间数据基础设施的一个重要组成部分,也是目前实现空间数据共享的一个必要手段。
Geo Spatial data Transfer Standard is an important part of "National Spatial data Infrastructure (NSDI)", as well as a necessary means for data sharing.
SAGE系统采用来自国家地理空间情报局的国土安全基础设施计划的地理空间数据。
SAGE USES geospatial data from the National geospatial Intelligence Agency's Homeland Security Infrastructure Program.
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