全球地理信息数据建设优先区分析  

Priority area analysis of global geographic information data construction

作　　者：林尚纬 张宏伟[1] 杜晓[1] 陈利军[1] 彭舒[1] 欧阳斯达 张俊辉[1] 郑义[1] 周琦[1] LIN Shangwei;ZHANG Hongwei;DU Xiao;CHEN Lijun;PENG Shu;OUYANG Sida;ZHANG Junhui;ZHENG Yi;ZHOU Qi(National Geomatics Center of China,Beijing 100830,China;Land Satellite Remote Sensing Application Center,MNR,Beijing 100048,China)

机构地区：[1]国家基础地理信息中心,北京100830 [2]自然资源部国土卫星遥感应用中心,北京100048

出　　处：《测绘通报》2020年第7期5-9,共5页Bulletin of Surveying and Mapping

基　　金：全球地理信息资源建设与维护更新(12130040);科技部国家重点研发计划(2016YBF0501401)。

摘　　要：以全球1∶25万分幅地表覆盖类别格网单元数据为基础,本文采用因素组合法对卫星影像获取难度、地形类别、云覆盖、景观破碎度等限制因素进行了分析,采用AHP法确定各限制因子权重、多因素综合指数法计算得分、自然间断点法进行优先区划分,最终将5类测绘地理信息数据(DOM、DSM、DEM、DLG、LC)建设优先区按照由易到难的次序划分为优先建设、适宜建设、困难建设区3类。研究分析能够为国家级测绘地理信息相关项目的任务划分、经费定额、工程实施等提供借鉴和参考依据。Based on the global grid data of 1∶250000 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.

关 键 词：地理信息数据 优先区 格网 限制因素 地表覆盖 

分 类 号：P208[天文地球—地图制图学与地理信息工程]