Office for Outer Space Affairs
UN-SPIDER Knowledge Portal
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The UN-SPIDER Knowledge Portal is your one-stop platform for resources on space-based disaster risk management. It provides: • Links and guidance on satellite data sources and applications • Recommended practices and step-by-step methodologies • Training materials and tutorials • Case studies and user stories from real-world applications • News and updates on UN-SPIDER activities, events, and global developments
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Gaofen-2 is a follow-on mission of the Gaofen-1technology demonstration mission, a series of high-resolution optical Earth observation satellites of CNSA (China National Space Administration), Beijing, China. GF-2 is part of the CHEOS (China High Resolution Earth Observation System) family. The mission goal of GF-2 to implement sub-meter level, high geographical accuracy Earth surface imaging, promoting application of CHEOS satellites and its social and economic benefits, meanwhile to make breakthrough in key technologies like fast roll and high stable attitude control, long focal length large f-number, lightweight camera design and long life bus design, enhancing China's civilian imaging satellite abilities and reliability.
Instrument: PMC-2 (PAN and Multispectral Camera Suite-2) - 2 barrel-mounted panchromatic cameras - 2 MS (Multispectral) cameras - swath width: 23km for each camera / combined swath width: 45.3km
Providing high accuracy geographical mapping, land and resource surveying, environment change monitoring, near realtime observation for disaster prevention and mitigation, as well as agriculture and forest estimation
