地理信息资源建设与维护更新项目中DSM、DEM数据质量检查方法  

Quality inspection method of DSM and DEM data in the geographic information resource construction and maintenance renewal project

作　　者：李锋 白晓晶 LI Feng;BAI Xiaojing(The First Topographic Surveying Brigade,MNR,Xi′an,Shaanxi 710054,China;Shaanxi Surveying and Mapping Production Supervision and Inspection Station,MNR,Xi′an,Shaanxi 710054,China)

机构地区：[1]自然资源部第一大地测量队,陕西西安710054 [2]自然资源部陕西测绘产品质量监督检验站,陕西西安710054

出　　处：《测绘标准化》2023年第2期116-119,共4页Standardization of Surveying and Mapping

摘　　要：地理信息资源建设与维护更新项目测区范围广,各地区地形地貌、自然条件的差异决定了在对DSM、DEM数据成果进行质量检查时,除设计要求的中误差、最大误差等基本指标必须满足精度要求外,DSM数据匹配后细节纹理的体现程度、DEM数据的滤波尺度等问题也是产品质量的关键点。本文针对DSM、DEM数据检查环节质量关键点的检查,分析总结出一些检查方法和技巧,对具体质量问题作了对比展示,为后期成果数据质量的提升提供参考借鉴。The geographic information resources construction and maintenance renewal project has a wide range of survey areas.The differences of topography condition,natural conditions in various regions determine that in the quality inspection of DSM and DEM data,the basic accuracy indexes such as the mean square error and the maximum error required by the design must meet the accuracy requirements,and the degree of detail texture after DSM data matching and the filtering scale of DEM data are also the key points of product quality.In this paper,some inspection methods and techniques are analyzed and summarized for the inspection of the key points of the quality in DSM and DEM data production and inspection,and the specific quality problems are compared and displayed,which provides reference for the improvement of the quality of the later results data.

关 键 词：DSM DEM 质量检查 精度指标 细节纹理 滤波尺度 

分 类 号：P208[天文地球—地图制图学与地理信息工程]