Gaofen-9 04 & Q-SAT

Q-SAT Science Satellite, developed by Tsinghua University, will carry out in-orbit flight verification of gravity satellite system design methods, dual-frequency GPS-based precision orbital atmospheric density measurement methods, and other theories and technologies.

Gaofen-9 satellites are observation satellites for civil use, used for the construction of new infrastructure (roads, canals), agricultural crop management, or river traffic management. It is part of the program funded by the state and the Chinese Communist Party "China High-definition Earth Observation System", or CHEOS. The lack of information on the satellite structure is due to the fact that it is likely based on the CAST2000 platform, which is also used on military satellites such as Yaogan-2. The satellite's resolution is less than one metre.