全国2米格网精度DEM

       2米DEM数据主要是以0.3米超高分辨率多视角卫星影像/无人机机载激光点云数据、高精度地面控制点等数据为基础，依托自研“星图地球超算数据工场”，结合智能化人机协同编辑技术，通过影像空三解算、DSM产品生成、DEM滤波处理、DEM精细化编辑、DEM拼接等技术流程，构建形成的2m格网尺寸高精度数字高程模型成果。数据参数参数名称参数值数据分辨率5米格网高程基准大地/1985高程基准时效性按项目需求时间范围定制覆盖区域按项目需要区域范围定制数据来源0.3米多视角卫星/无人机机载激光点云数据数据格式tif实体数据/terrain地形瓦片数据图 2米格网DEM数据示例1图 2米格网DEM数据示例2The 2-meter Digital Elevation Model (DEM) data is a high-precision DEM product with a 2m grid size. It is developed based on data sources including 0.3m ultra-high-resolution multi-view satellite imagery, unmanned aerial vehicle (UAV) airborne LiDAR point cloud data, and high-precision ground control points. Relying on the self-developed "Xingtu Earth Supercomputing Data Workshop" platform, combined with intelligent human-machine collaborative editing technology, it is constructed through technical workflows such as image aerial triangulation, DSM product generation, DEM filtering processing, DEM fine editing, and DEM mosaicking. **Data Parameters** - Data Resolution: 5-meter grid - Elevation Reference: China 1985 National Elevation Datum - Timeliness: Customized based on project requirements - Coverage Area: Customized based on project-specified regions - Data Source: 0.3m multi-view satellite/UAV airborne LiDAR point cloud data - Data Format: TIF physical data / terrain tile data Figure 1: Example of 2-meter grid DEM data; Figure 2: Example of 2-meter grid DEM data

搜集汇总

背景与挑战

背景概述

全国2米格网精度DEM是一个高精度数字高程模型数据集，基于0.3米超高分辨率多视角卫星影像和无人机机载激光点云数据构建，通过自研技术流程生成2米格网尺寸的高程数据。该数据集提供大地和1985两种高程基准选项，数据格式包括tif实体数据和terrain地形瓦片，覆盖区域和时效性可根据项目需求定制，适用于需要精细地形分析的应用场景。