2019年雅砻江90m数字高程数据

SRTM（Shuttle Radar Topography Mission），由美国太空总署（NASA）和国家测绘局（NIMA）联合测量。SRTM2-DEM以独立的栅格像元文件组织数据，并用规则格网像元的灰度值来表征地形高程值。采样间隔为经纬方向各1°，即1°×1°，像元采样间隔为1弧秒或3弧秒,其中 SRTM23对外实现共享，即数据对应90m分辨率。

SRTM (Shuttle Radar Topography Mission) was jointly surveyed by the National Aeronautics and Space Administration (NASA) and the National Imagery and Mapping Agency (NIMA). SRTM2-DEM organizes data as individual grid raster pixel files, and uses the grayscale values of regular grid pixels to represent topographic elevation values. Its sampling interval is 1° in both longitude and latitude directions, i.e., 1°×1°, with pixel sampling intervals of 1 arc-second or 3 arc-seconds. SRTM23 is publicly shared externally, and the corresponding data has a resolution of 90 meters.

搜集汇总

背景与挑战

背景概述

该数据集是2019年雅砻江地区的90米分辨率数字高程数据，来源于航天飞机雷达地形测绘任务(SRTM)，采用栅格数据格式，适用于地形高程测量和分析。