重点区域最高至亚米分辨率

重点区域最高至亚米分辨率RTU产品集是利用GF-2、GF-7等国产高分辨率遥感卫星数据，采用基于相位相关的自动匹配技术和区域网平差进行正射校正，在此基础上利用Pansharpen融合算法进行融合，最后基于自动提取最优镶嵌线、匀光、匀色、影像归一化等技术进行分布式并行镶嵌处理，实现北京、天津、桂林、南宁、武夷山、济南、辽宁等重点区域约5万平方公里亚米级分辨率数据RTU产品生产。

The RTU product set with up to sub-meter resolution for key regions is developed using data from Chinese high-resolution remote sensing satellites such as GF-2 and GF-7. The production workflow first applies phase correlation-based automatic matching technology and block adjustment to conduct orthorectification. Next, the Pansharpen fusion algorithm is employed for image fusion. Finally, distributed parallel mosaic processing is carried out via technologies including automatic optimal mosaic line extraction, uniform lighting adjustment, uniform color adjustment, and image normalization. This process enables the production of RTU products with sub-meter resolution remote sensing data covering approximately 50,000 square kilometers across key regions such as Beijing, Tianjin, Guilin, Nanning, Wuyishan, Jinan, and Liaoning.