日本30m分辨率数字高程模型（DEM）数据

本数据集基于国内外立体成像卫星数据成果进行优化、局部修正与纠偏，采取粗差修正、空值填充和水域数值异常剔除等处理方法，经过图像拼接、投影转化、裁剪等步骤，生成了优化的30m分辨率数字高程模型（DEM），数据成像时间为2019年。

This dataset is developed based on domestic and international stereoscopic imaging satellite data products, with the products having undergone optimization, partial correction and rectification. Processing techniques including gross error correction, null value filling and elimination of abnormal numerical values in water areas are adopted, followed by procedures such as image mosaicking, projection transformation and clipping. Finally, an optimized 30-meter resolution Digital Elevation Model (DEM) is generated, and the data acquisition time is 2019.

搜集汇总

背景与挑战

背景概述

日本30m分辨率数字高程模型（DEM）数据是基于国内外卫星数据优化生成的，空间分辨率为30m，垂直精度20m，水平精度30m，适用于地理分析和地形研究。