...空位置数据 ; 地理位置数据 ; 3G/4G; LBS [gap=1231]Key words: Semantic Data; Spatio-temporal Data; General-geographic Data; 3G/4G; LBS( Location-Based Service) ..
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General Geographic Data Engine 通用地理数据引擎
This paper compared the navigable data with general geographic information data in data model, accuracy and structure, etc.
本文对导航数据与一般的地理信息数据在数据模型、数据的准确性、数据的组织方法等方面进行了比较。
The research on massive-scale geographic data was carried on for a long time. But general formation data has not been studied carefully.
国内外对海量地形数据的研究比较深入，但对具有一般意义的海量地层数据研究较少。
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