BackForward Satellite: FY-4A 

Satellite details
Acronym FY-4A
Full name Feng-Yun - 4A
WIGOS Station Identifier ---
Satellite Description
  • 1st flight unit of the FY-4 programme.
  • Mission: operational meteorology.
  • Significant contribution to space weather.
Mass at launch 5300 kg Dry mass
Power 3200 W
Data access link http://satellite.nsmc.org.cn/portalsite/Data/DataView.aspx?SatelliteType=1&SatelliteCode=FY4A
Data access information
  • Near-real time availability of full resolution data by HRIT and (planned) by CMACast.
  • Availability of selected information by LRIT.
  • Meteorological warnings (WAIB) sharing the LRIT link.
  • Availability of DCP messages by land lines.
Orbit Geostationary orbit Altitude 35786 km
Longitude 123.5° E

 

Space agency CMA , NRSCC
Status Operational
Details on Status
(as available)
  • Re-located from the initial position (99.5°E) to the operational position (105°E nominal) on 16 April 2018
  • Relocated to 86.5oE in March 2024 and under testing.
  • Relocated to 123.5oE after 18 Feb 2025 for full disk coverage
Launch 10 Dec 2016 EOL ≥2025
Last update: 2025-02-12
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-4A

Acronym Full name
DCS Data Collection Service
GIIRS Prototype Geostationary Interferometric Infrared Sounder
LMI Lightning Mapping Imager
AGRI Advanced Geostationary Radiation Imager
SEP/HEPS Space Environment Package / High Energy Particles Sensor
SEP-fields Space Environment Package - fields
Show instrument status and calibration
Satellite Field of View

Estimate of the satellite's footprint, assuming a zenith angle of 75 °
You can drag the image around and zoom using the mousewheel

Map cannot be displayed!
Satellite frequencies for Earth Observation, data transfer and platform communications and control
Frequencies for satellite management
Service Direction Frequency (MHz) Emission designator Bandwidth (kHz) Polarisation D/A Data rate (kbps) or Baseband (kHz) Comments
TARS S-E 1693 MHz 8M0GXD-- 8000 kHz - D   Ranging
TARS E-S 2042 MHz - 2052 MHz 8M0GXD-- 8000 kHz - D   Ranging
TARS S-E 2222 MHz - 2232 MHz 8M0GXD-- 8000 kHz - D   Ranging
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
CDAS S-E 7500 MHz 100000 kHz RHCP&LHCP D   Raw data
HRIT E-S 8185 MHz 20000 kHz RHCP D   High-resolution data
HRIT E-S 8205 MHz 20000 kHz RHCP D   High-resolution data
HRIT S-E 1681 MHz 12000 kHz linear D   High-resolution data
LRIT & WAIB E-S 2057 MHz 1000 kHz RHCP D   Selected data and information
LRIT & WAIB S-E 1697 MHz 2000 kHz linear D   Selected data and information
DCPS E-S 401.25 MHz 300 kHz RHCP D   Regional DCP reports
DCPS E-S 402 MHz - 402.1 MHz - RHCP D   International DCP reports
DCPR S-E 1686 MHz - 1690 MHz - - D   DCP reports relay