深圳市数字表面模型数据

（1）城市规划与建设 三维城市建模：构建城市数字孪生基底，精确还原建筑物高度、轮廓及植被分布，支持日照分析（如计算高层建筑阴影对周边区域的影响）、容积率测算（通过建筑物屋顶高程与占地面积计算建筑面积）。 工程施工与管理：监测施工进度通过对比施工前后DSM，计算土方开挖/填筑量（精度可达±3%），评估基坑深度、地基平整度； 管线规划：结合地下管线数据，分析地表建筑物与地下管线的垂直距离，避免施工挖断管线。 （2）测绘与地理信息 地形图更新与正射影像制作：生成高精度数字正射影像（DOM），尤其在城市区域通过DSM消除建筑物倾斜和遮挡，制作真正射影像（TDOM），用于1:500-1:2000大比例尺地形图更新。

(1) Urban Planning and Construction
3D Urban Modeling: Establish the digital twin foundation of the city, accurately restore building heights, outlines and vegetation distribution, and support sunlight analysis (e.g., calculating the impact of shadows from high-rise buildings on surrounding areas) and floor area ratio calculation (calculating building floor area based on the roof elevation and covered land area of buildings).
Engineering Construction and Management: Monitor construction progress by comparing pre- and post-construction Digital Surface Models (DSMs), calculate earthwork cut and fill volume with an accuracy of up to ±3%, and assess foundation pit depth and foundation flatness.
Pipeline Planning: Combine with underground pipeline data to analyze the vertical distance between surface buildings and underground pipelines, thereby avoiding pipeline damage during construction.

(2) Surveying, Mapping and Geographic Information
Topographic Map Updating and Orthophoto Production: Generate high-precision Digital Orthophoto Maps (DOMs). Especially in urban areas, use DSMs to eliminate building tilt and occlusion, and produce True Digital Orthophoto Maps (TDOMs), which are applied to updating large-scale topographic maps at scales of 1:500 to 1:2000.

搜集汇总

背景与挑战

背景概述

该数据集为深圳市数字表面模型数据，采用无人机航空摄影技术生成，覆盖深圳全域（大亚湾除外），包含地形和地表地物的高程信息。数据格式主要为GeoTIFF，适用于城市规划、测绘等领域，但公开信息中缺乏完整的技术参数和应用细节说明。