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 31 May 2020
Last update: 2021-12-29
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
Telecommunication frequency or microwave sensing channel information Show expert details
Service Dir or Mode Frequency Emission designator Bandwidth Polarisation D/A Data rate or Baseband Comments
DPT S-E 8145.95 MHz 149MG1W 149000  kHz RHCP D 93000  kbps Stored data
MPT S-E 7775 MHz 45M0G1W 45000  kHz RHCP D 18700  kbps Full-resolution MERSI data
AHRPT S-E 1704.5 MHz 6M80G1W 6800  kHz RHCP D 4200  kbps Other instrument data
MWRI passive 10650 MHz 180000  kHz H&V A   Window channel
MWRI passive 18700 MHz 200000  kHz H&V A   Window channel
MWRI passive 23800 MHz 400000  kHz H&V A   Water vapour channel
MWRI passive 36500 MHz 400000  kHz H&V A   Window channel
MWRI passive 89000 MHz 3000000  kHz H&V A   Window channel
MWTS-1 passive 50210 - 57455 MHz N/R  kHz H or V A   Oxygen band, 4 channels
MWHS-1 passive 150000 MHz 1000000  kHz H&V A   Weak water vapour channel
MWHS-1 passive 175310 - 191310 MHz N/R  kHz V A   Water vapour band, 3 channels