Research on the construction and hierarchical expression of 3D geo-name entity
Fundamental geo-entity is the positioning framework and bearing foundation of other geo-entity and related information.The new fundamental surveying and mapping system for the first time includes the geo-name entity into the classification of fundamental geo-entity,associates the geometric abstract model of geographic objects with attribute information,and realizes the comprehensive expression of the geo-name information of geographic objects.This paper collects and sorts out the latest electronic map database and point of interest database of Xiaoshan District,as the data source of the extraction of the geo-name information of geographic objects such as residential land,territory,transportation,water system,airport,housing estate,buildings,hotels,parks and scenic spots.The geo-entity is constructed by using the geo-entity abstract modeling and the entitative transformation of stock data.The geo-name entity elevation is assigned through the digital elevation model of Xiaoshan District,and the 3D geo-name entity data of Xiaoshan District is obtained,providing support for the special work of digital enabling social governance in Xiaoshan District.
new fundamental surveying and mapping systemfundamental geo-entity3D geo-name entityhierarchical expression
万方数据
维普
