国家航天局：从根本上提升用户数据获取效率和卫星利用率

Group 1 - The core viewpoint of the news is the emphasis on maximizing the value of public data through various operational models, including shared, open, and authorized operations [2] - The National Data Bureau has released a total of 70 demonstration scenarios in three batches, with an additional 30 scenarios released in the fourth batch [1] - The transition from a primary focus on sharing data to a more collaborative approach involving authorized operations is highlighted as a significant development in public data utilization [2] Group 2 - The number of remote sensing satellites in orbit has exceeded 400, enabling all-weather and all-time observation of the Earth [3] - By 2025, China aims to conduct 159 domestic and international remote sensing emergency disaster monitoring operations, providing over 23,000 high-quality remote sensing images domestically and 1,600 images internationally [3] - The "space star" model for coordinating civil and commercial satellites has significantly improved the speed of emergency response through effective data sharing and process scheduling [3]