Research on Vector Data Fusion Processing between "Tianditu·Chengdu" and Provincial-level Node
Since the data resources of each node of "Tianditu"are relatively independent, in order to promote the intensive sharing, transformation and upgrading of "Tianditu", a long-term and stable operation mechanism of upper and lower linkage is established to form a reasonable service, and to further promote the integration of "Tianditu"construction. Based on the municipal level, this paper analyzesthe city-level node "Tianditu·Chengdu"and provincial-level node of "Tianditu" from the aspects of data content, up-to-dateness, and accuracy. According to the requirements of national and provincial nodes, the data fusion technology design of city-lev-el nodes is determined, and processing methods such as attribute structure standardization, attribute full-width and half-width conver-sion, and fusion of place name addresses and points of interest are studied. It provides ideas for municipalities to carry out "Tianditu" data fusionand provides Chengdu data base for upper-level nodes.
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