上海市 2020 年 0.2M 分辨率真彩色 DMCⅢ 航摄影像数据集
收藏资源简介:
• 拍摄时间:2020-05-01 至 2020-08-31(梅雨季后,云量 <5%,植被茂盛,色彩层次丰富)。 • 空间分辨率:0.2 m GSD(20 cm),真彩色 RGB 三波段。 • 覆盖范围:上海市行政全域 6 340 km²,其中有效航摄面积 6 100 km²(含长江口、杭州湾水面 240 km²)。 • 数据量:原始 9.4 TB(14-bit RAW);处理后成果 2.7 TB(GeoTIFF LZW)。 • 坐标系:CGCS2000 / 3° Gauss-Krüger 带号 39;高程基准:1985 国家高程基准。
• Capture Period: From 2020-05-01 to 2020-08-31 (post-plum rain season, cloud cover <5%, lush vegetation with rich color gradations). • Spatial Resolution: 0.2 m GSD (20 cm), true-color RGB three-band imagery. • Coverage: Entire administrative jurisdiction of Shanghai Municipality, totaling 6,340 km², with an effective aerial photography area of 6,100 km² (including 240 km² of water area in the Yangtze Estuary and Hangzhou Bay). • Data Volume: 9.4 TB for raw 14-bit RAW data; 2.7 TB for processed products in GeoTIFF format with LZW compression. • Coordinate System: CGCS2000 / 3° Gauss-Krüger Zone 39; Elevation Datum: 1985 National Elevation Datum.




