Priority area analysis of global geographic information data construction

doi:10.13474/j.cnki.11-2246.2020.0204

Abstract

Abstract: Based on the global grid data of 1:250 000 surface coverage categories, this paper analyzes the factors such as the difficulty of satellite image acquisition, terrain category, cloud coverage, landscape fragmentation, and so on, by determining the weight of each limiting factor by AHP method, calculating the score by multi factor composite index method, dividing the priority areas by natural discontinuity point method, and finally the priority areas of five types of surveying and mapping geographic information data products (DOM, DSM, DEM, DLG, LC) are divided into three levels according to the order from easy to difficult. The research and analysis can provide reference for the task division, budget quota and project implementation of national mapping geographic information related projects.

Key words: geographic information data, priority area, grid, limiting factor, land cover

CLC Number:

P208

LIN Shangwei, ZHANG Hongwei, DU Xiao, CHEN Lijun, PENG Shu, OUYANG Sida, ZHANG Junhui, ZHENG Yi, ZHOU Qi. Priority area analysis of global geographic information data construction[J]. Bulletin of Surveying and Mapping, 2020, 0(7): 5-9.

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