BackForward Satellite: FY-3B 

Satellite details
Acronym FY-3B
Full name Feng-Yun - 3B
Satellite Description
  • 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.
Mass at launch 2298 kg Dry mass 2234 kg
Power 2480 W
Data access link
Data access information
  • Real-time availability of ERM-1, IRAS, MERSI-1, MWHS-1, MWRI, MWTS-1, SBUS, SEM, SIM-1, TOU and VIRR by MTP.
  • Real-time availability of a selection of data by AHRPT
  • Global data available via CMA portal
  • Selected global data available under bilateral arrangements
Orbit Sunsynchronous orbit Altitude 836 km
ECT 14:45 asc


Space agency CMANRSCC
Status Inactive
Details on Status
(as available)
  • The ECT of 14:45 asc refers to 14 July 2017.
Launch 04 Nov 2010 EOL 09 Dec 2021
Last update: 2022-06-27
Associated satellite programme and related satellites

Note: red tag: no longer operational , green tag: operational , blue tag : future

Satellite Payload

All known Instruments flying on FY-3B

Acronym Full name
ERM-1 Earth Radiation Measurement - 1
IRAS Infra Red Atmospheric Sounder
MERSI-1 Medium Resolution Spectral Imager -1
MWHS-1 Micro-Wave Humidity Sounder -1
MWRI Micro-Wave Radiation Imager
MWTS-1 Micro-Wave Temperature Sounder - 1
SBUS Solar Backscatter Ultraviolet Sounder
SEM/HEPD Space Environment Monitor - High Energy Particle Detector
SIM-1 Solar Irradiance Monitor - 1
TOU Total Ozone Unit
VIRR Visible and Infra-Red Radiometer
SEM/IMS Space Environment Monitor - Ionosphere Measurement Sensor
Show instrument status and calibration
Satellite frequencies for Earth Observation, data transfer and platform communications and control
Earth observation MW frequencies
Service Sensing mode Frequency (GHz) Bandwidth (MHz) Polarisation Comments
MWRI passive 10.65 GHz 180 MHz H&V Window channel
MWRI passive 18.7 GHz 200 MHz H&V Window channel
MWRI passive 23.8 GHz 400 MHz H&V Water vapour channel
MWRI passive 36.5 GHz 400 MHz H&V Window channel
MWRI passive 89 GHz 3000 MHz H&V Window channel
MWTS-1 passive 50 GHz - 57.455 GHz 0 MHz H or V Oxygen band, 4 channels
MWHS-1 passive 150 GHz 1000 MHz H&V Weak water vapour channel
MWHS-1 passive 175 GHz - 191.31 GHz 0 MHz V Water vapour band, 3 channels
Frequencies for scientific data acquisition and communication services at ground stations
Service Direction Frequency (MHz) Bandwidth (kHz) Polarisation D/A Data rate (kbps) or Baseband (kHz) Comments
DPT S-E 8145.95 MHz 149000 kHz RHCP D 93000  kbps Stored data
MPT S-E 7775 MHz 45000 kHz RHCP D 18700  kbps Full-resolution MERSI data
AHRPT S-E 1704.5 MHz 6800 kHz RHCP D 4200  kbps Other instrument data