FY-3B Satellite


  • 2nd 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 836 km
ECT 13:40 asc
Mass at launch 2298 kg
Dry mass 2234 kg
Power 2480 W
Launch 2010-11-05
End of service 2020-06-01


Picture Acronym Full name
MERSI-I MERSI-I  Medium Resolution Spectral Imager-I
MERSI-1 VIRR  Visible and Infra-Red Radiometer
IRAS IRAS  Infra Red Atmospheric Sounder
MWTS-I MWTS-I  Micro-Wave Temperature Sounder-I
MWHS-I MWHS-I  Micro-Wave Humidity Sounder-I
MWRI-I MWRI-I  Micro-Wave Radiation Imager-I
TOU TOU  Total Ozone Unit
SBUS  Solar Backscatter Ultraviolet Sounder
ERM-I ERM-I  Earth Radiation Measurement-I
SIM-I  Solar Irradiance Monitor-I
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.


Payload Datasets
MERSI-I L1 dataL2L3 product
VIRR L1 dataL2L3 product
IRAS L1 dataL2L3 product
MWTS-I L1 data
MWHS-I L1 dataL2L3 product
MWRI-I L1 dataL2L3 product
TOU L1 dataL2L3 product
SBUS L1 dataL2L3 product
ERM-I L1 data
SIM-I L1 data
SEM L1 data
MULSS L2L3 product
ERBM L2L3 product



Instruments of FY-3A/B


First visual image by FY-3B


First mosaic visual image by FY-3B