FY-4B

FY-4B Satellite

Description

FY-4 is the second generation of China's geostationary meteorological satellite series. FY-4B, the second of its series, was launched on June 3rd, 2021, aiming to serve as a operational satellite. FY-4B has adjusted payloads and tuend-up performance on the basis of FY-4A scientific experiment satellite, which has been launched on December 11th, 2016 and working in orbit for more than 4 years.

Instruments

FY-4B is based on the SAST5000 platform with three-axis stabilization and 1553B and Spacewire dual-buses system. It has a designed life of 7 years and launch weight of 5400kg, The main payloads onboard FY-4B are Advanced Geostationary Radiation Imager, Geostationary Interferometric Infrared Sounder, Geostationary High-speed Imager and Space Environment Package.

Picture	Acronym	Full name
	AGRI	Advanced Geostationary Radiation Imager
	GIIRS	Geostationary Interferometric Infrared Sounder
	GHI	Geostationary High-speed Imager
	SEP	Space Environment Monitoring Instrument Package