FY-3E Satellite


  • 5th flight unit of the FY-3 series.
  • Main mission: operational meteorology.
  • Substantial contribution to ocean and ice monitoring, climate monitoring.
  • Significant contribution to atmospheric chemistry and space weather.
Orbit Sunsynchronous orbit
Altitude 831 km
ECT 05:30 desc
Dry mass 2300 kg
Power 2500 W
Launch 2021-07-05
End of service ≥2026


Acronym Full name
MERSI-LL  Medium Resolution Spectral Imager-LL
HIRAS-2  Hyperspectral Infrared Atmospheric Sounder-2
MWTS-3  Micro-Wave Temperature Sounder-3
MWHS-2  Micro-Wave Humidity Sounder-2
GNOS-2  GNSS Radio Occultation Sounder-2
WindRad Wind Radar
SSIM Solar Spectral Irradiance Monitor
SIM-2 Solar Irradiance Monitor
X-EUVI Solar X-ray and Extreme Ultraviolet Imager
Tri-IPM  Triple-angle Ionospheric PhotoMeter
SEM Space Environment Monitor

Data Circulation

DPT (Delayed Picture Transmission) to acquire the on-board stored global data.

MPT (Medium-resolution Picture Transmission), for X-band real-time broadcasting of information of MERSI data.

HRPT (High Resolution Picture Transmission) for real-time broadcasting of full information of instruments aboard but MERSI.