FY-3 Satellite Data Open to the Public
FY-3 weather satellite A, China’s new generation polar orbiting meteorological satellite, opened on May 15, 2009 its data storage and service system to the public. Both users and general public can download the data and products provided by FY-3 weather satellite via the data dissemination system, or a sharing website, or though the FTP server located on the premises of the National Satellite Meteorological Center. People may also get cloud image messages from the website when booked in advance. In addition to providing traditional search and download services, the new system is designed with an integrated space database, allowing space based distribution and purchase of satellite remote sensing data with the support of
GIS platform. The system also furnish the data and products provided by 13 other weather satellites operated by European countries, the United States, and Japan, and the satellite meteorological data stored since April 1978.
National Satellite Meteorological Center also established a special data service agency equipped with technical and data service personnel, to provide manual data service and help for major disasters and research projects.
FY-3 weather satellite A has so far provided 2.23TB of real time satellite meteorological data to China and its adjacent areas since December 31, 2008.
The FengYun 3 (FY-3) is the new-generation polar orbit meteorological satellite to replace the FengYun 1 (FY-1). The satellite is currently being developed by Shanghai Academy of Space Flight Technology (SAST), also known as 8th Space Academy. The FY-3 project was initially approved in 1998 and entered full-scale development in 1999. Key aspects of the FY-3 project include collecting atmospheric data for intermediate- and long-term weather forecasting and global climate research. The first FY-3 satellite was successfully launched from Taiyuan Satellite Launch Centre on 27 May 2008.
Chinese FY-3s are the second generation of China’s polar orbiting meteorological satellite
series. This satellite series including 7 satellites will be operating during 2005 - 2020. The
first two satellites FY-3A and FY-3B and the on-board instruments are being designed and
manufactured.
Onboard the satellites of FY-3A and FY-3B, there are three passive microwave payload, they
are: Microwave Temperature Sounder (MWTS), Microwave Humidity Sounder (MWHS) and
Microwave Radiation Imager (MWRI).
The paper and presentation will describes the FY-3 mission and the status of development of
FY-3A, with the focus on the microwave payload, as well as the considerations on the
possible contribution of the FY-3 series to the GlobalPrecipitation Mission (GPM).
FY-3A satellite specifications and major orbital parameters FY-3A is a sun-synchronous polar-orbiting meteorological satellite. The satellite in general is a hexahedron of 4.4 2.0 2.0 meters and the configuration is depicted
The total weight is estimated 2200 kg. The one solar panel is mounted on one side of the satellite main body which makes the total length of the satellite 10 meters in flight. The attitude control of the satellite is three-axis stabilized with a measuring precision of 50 meters with the aid of a star sensor onboard the satellite. Table 1 depicts the major orbital parameters of the satellite.
Table 1. FY-3A satellite specifications and major orbital parameters
| Weight |
2200 Kg |
| Orbit |
Sun-synchronous |
| Altitude (km) |
836.4 |
| Power |
1100 Watts |
| Weight |
2200 Kg |
| Size |
4400*2000*2000 mm (in stowed)
4460*10000*3790 (in flight) |
| Orbital period (minutes) |
102.86 |
| Inclination (degrees) |
98.728 |
| Eccentricity |
>0.005 |
| Equatorial crossing time |
10:10 (a.m.) |
| Orbital maintenances |
10 minutes within two years |
| Onboard data storage |
160 Gb |
| Attitude Control |
Three-axis stabilization |
| Launch Vehicle |
LM-4B |
| Launch Plan |
September, 2005 |
|
The main objectives of developing FY-3 series.
The main mission objectives for FY-3 are:
- To provide global sounding of 3 -dimensional thermal and moisture structures of the atmosphere, cloud and precipitation parameters
Illustration of the FY-3 satellite (image credit: CMA/NSMC)
- to support global and regional numerical weather prediction;
- To provide global imaging to support short range weather forecasting and real time monitoring of meteorological/hydrological disasters and surface environment anomaly
- To provide necessary data for deriving important geophysical parameters to support researches on global change and climate change.
- To collect and relay important data.

|
- Illustration of the IRAS instrument (image credit: CMA/NSMC)
FY-3 Chronology
- 2008 May 27 - FY-3A - Launch Site: Taiyuan. Launch Vehicle: CZ. Perigee: 826 km (513 mi). Apogee: 828 km (514 mi). Inclination: 98.80 deg. Period: 101.40 min.
Polar orbiting weather satellite. The FY-3 series will replace the older FY-1 polar system.Development of Chinese FY-3 Meteorological Satellite Series and possible Contribution
to GPM
Wenjian ZHANG (Principal Author) and Naimeng LU
National satellite Meteorological Center
China Meteorological Administration
Beijing 100081, P.R. CHINA
Session 1, New and Future Sensors Applications and Systems
Tuesday, 13 January 2009, 1:30 PM-3:00 PM, Room 230
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- Wenjian Zhang
National Satellite Meteorological Center (NSMC)
China Meteorological Administration (CMA)
Beijing 100081, China
Bibliography:
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