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Chen Dan

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Proceedings Article | 16 October 2009 Paper

Research on the key technology of update of land survey spatial data based on embedded GIS and GPS

Dan Chen, Yanfang Liu, Hai Yu, Yin Xia

Proceedings Volume 7492, 749250 (2009) https://doi.org/10.1117/12.838362

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According to the actual needs of the second land-use survey and the PDA's characteristics of small volume and small memory, it can be analyzed that the key technology of the data collection system of field survey based on GPS-PDA is the read speed of the data. In order to enhance the speed and efficiency of the analysis of the spatial data on mobile devices, we classify the layers of spatial data; get the Layer-Grid Index by getting the different levels and blocks of the layer of spatial data; then get the R-TREE index of the spatial data objects. Different scale levels of space are used in different levels management. The grid method is used to do the block management.

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