Ground altitude model Download, grid 1 +

Nationwide elevation data in the form of a regular grid with a resolution of 1 m. A terrain model created on the basis of ground and water points in laser data. Continuously updated on the basis of laser data and image matching.本数据集为分辨率1米的规则网格（regular grid）格式全国高程数据（elevation data），其基于激光数据（laser data）中的地面点与水面点构建地形模型（terrain model），并依托激光数据与影像匹配（image matching）技术持续更新。