孟加拉国达卡市高分辨遥感数据集拾米级多光谱遥感影像（2010）

本数据集的数据源为Landsat-5卫星的大气顶层反射率数据第1、2、3波段。Landsat卫星为太阳同步卫星，卫星由北向南运行，地球自西向东旋转，卫星每天绕地球14．5圈，每圈在赤道西移159km，每16天重复覆盖一次。本数据集主要覆盖孟加拉国达卡市，基于2010年的Landsat-5大气顶层反射率数据，本数据从地理空间数据云平台下载，利用ArcGIS对数据进行波段合成，最终得到了TIFF格式的达卡区域2010的30米分辨率多光谱遥感影像数据。

The data source of this dataset is the top-of-atmosphere reflectance data of Bands 1, 2 and 3 from the Landsat-5 satellite. Landsat satellites are sun-synchronous orbiting satellites, which travel from north to south. As the Earth rotates from west to east, the satellite completes 14.5 orbits around the Earth daily, with a westward shift of 159 km at the equator per orbit, and repeats its coverage every 16 days. This dataset primarily covers Dhaka, Bangladesh. Based on the 2010 Landsat-5 top-of-atmosphere reflectance data downloaded from the Geospatial Data Cloud platform, we conducted band compositing using ArcGIS, and finally obtained multi-spectral remote sensing image data of the Dhaka area in 2010 with a 30-meter resolution in TIFF format.