Abstract
With the rapid development of earth observation, remote sensing and geographic information system technology, human can achieve a huge sum of spatial data. Spatial data distribution is the main aspect of spatial information services. One of the main contradictions is that the current limited network bandwidth cannot meet the request for achieving realtime space data. Global Subdivision proposed a new theory of spatial division and data organization. The patches in subdivision grids have the similar size and can cover the globe isotropic and seamlessly. Every patch's identification contains the location and scale information. So, the distribution system based on Global subdivision grid model can flexibly choose the different scale conditions and different spatial resolution data according to the user's interested region and real-time communications. Ultimately, through the multi-scale spatial distribution and progressive transmission, users can achieve the spatial data they want at anytime and anywhere.
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