期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2006
卷号：XXXVI Part 4
出版社：Copernicus Publications
摘要：Spot Image and French National Geographic Institute (IGN) are currently populating a worldwide accurate database named Reference3D.. This database consists in three information layers : Digital Elevation Model at 1 arc-second resolution, High Resolution Orthoimage (1/6 of arc-second) and Quality Masks. Wide coverage (Dec. 05 : 11 millions km2 ; annual raise of 7 M km2) and tough requirements (circular horizontal accuracy better than 16 m for 90 % of the points and vertical accuracy better than 10 m for 90% of the points) are Reference3D key advantages.
