Introduction of FY-4B

FY-4 is the 2nd generation FengYun Geostationary meteorological satellite. The first satellite of FY-4 series, FY-4A, was designed to be an R&D satellite and launched on December 11, 2016.

FY-4B, the second satellite of FY-4 series, was designed to be the first operational satellite of FY-4 series and launched on June 3, 2021.

Fig. FY-4B spacecraft.
Tab. FY-4B Spacecraft parameters.
Stabilization Three-axis
Attitude accuracy 3″
Raw data transmission X band
Design life 7 years