WMO OSCAR | Satellite: FY-4A

Satellite: FY-4A

Satellite details

Acronym	FY-4A
Full name	Feng-Yun - 4A
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	104.7° E

Space agency	CMA , NRSCC
Status	Operational
Details on Status (as available)	Re-located from the initial position (99.5°E) to the current operational position (105°E nominal) on 16 April 2018
Launch	10 Dec 2016	EOL	≥2023
Last update:	2022-02-23

Associated satellite programme and related satellites

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

Feng-Yun - 4
- FY-4 MW1 (2025 - 2029)
- FY-4 MW2 (2029 - TBD)
- FY-4A (2016 - 2023)
- FY-4B (2021 - 2028)
- FY-4C (2024 - 2031)
- FY-4D (2026 - 2033)
- FY-4E (2027 - 2034)
- FY-4F (2030 - 2037)
- FY-4G (2033 - 2040)

Satellite Payload

All known Instruments flying on FY-4A

Acronym	Full name
DCS	Data Collection Service
GIIRS	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

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

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Satellite payload

All known instruments flying on FY-4A

Instrument	Full name	Start date	EOL date	Status	NRT data	Instrument landing page
DCS	Data Collection Service	01 Mar 2017	≥2023 *	Active	Yes
GIIRS	Geostationary Interferometric Infrared Sounder	01 Mar 2017	≥2023 *	Active	Yes	gsics.nsmc.org.cn
LMI	Lightning Mapping Imager	01 Mar 2017	≥2023 *	Active	Yes	gsics.nsmc.org.cn
AGRI	Advanced Geostationary Radiation Imager	01 Mar 2017	≥2023 *	Active	Yes	gsics.nsmc.org.cn
SEP/HEPS	Space Environment Package / High Energy Particles Sensor	01 Mar 2017	≥2023 *	Active	Yes	gsics.nsmc.org.cn
SEP-fields	Space Environment Package - fields	01 Mar 2017	≥2023 *	Active	Yes	gsics.nsmc.org.cn

* The information in this field is estimated or assumed

Satellite frequencies for Earth Observation, data transfer and platform communications and control

Frequencies for satellite management

Service	Direction	Frequency (MHz)	Bandwidth (kHz)	Polarisation	D/A	Comments
DCPS	E-S	401.1 MHz - 401.4 MHz	3 kHz	RHCP	D	Regional DCP reports
DCPS	E-S	402 MHz - 402.1 MHz	3 kHz	RHCP	D	International DCP reports
DCPS	S-E	1688 MHz	4000 kHz	linear	D	DCP report relay

Frequencies for scientific data acquisition and communication services at ground stations

Service	Direction	Frequency (MHz)	Bandwidth (kHz)	Polarisation	D/A	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
TARS	E-S	2047 MHz	10000 kHz	RHCP	D	Ranging
TARS	S-E	2227 MHz	10000 kHz	RHCP	D	Ranging
TARS	S-E	1693 MHz	8000 kHz	linear	D	Ranging
T&C	E-S	2067.5 MHz	85000 kHz	RHCP	D	Telemetry and commands
T&C	S-E	2245 MHz	90000 kHz	RHCP	D	Telemetry and commands