Publicly Available IKONOS-2 Commercial Imagery

'The USGS Commercial Data Purchases (UCDP) imagery collection is an archive of commercial remote sensing imagery from several different commercial vendors. The UCDP...美国地质调查局（United States Geological Survey, USGS）商业数据采购（UCDP）影像数据集，是一套收录来自多家不同商业遥感影像服务商的商业遥感影像的档案库。该UCDP……