Feng-Yun - 4
Series of operational meteorological satellites in geostationary orbit. Feng-Yun means “Wind and Cloud”.
Follow-on of the FY-2 series. Main developments: 3-axis stabilisation, much improved imager, hyperspectral sounder and, later, a MW sounder.
Developed by NRSCC and operated by CMA.
The design life time of the satellites is 7 years (5 for FY-4A).
Two positions: 86.5°E and 105°E. The replacement policy is based on mutual backup of the two satellites, and possibly a third position at 123.5°E.
See detailed description at:
CDAS (Command and Data Acquisition Station) for real-time acquisition of the full information.
HRIT (High Rate Information Transmission) for near-real time broadcasting of full resolution data.
LRIT (Low Rate Information Transmission) for broadcasting of image frames and other data, and Weather Alarm Information Broadcast (WAIB).
DCS (Data Collection Service) to relay messages from self-timed DCP (Data Collection Platform).
CMACast [not exclusively dedicated to FY-4 data] DVB retransmission service.
2016 - 2040
Associated satellites and instruments
Note: red tag => no longer operational , green tag => operational
, blue tag => planned