Dong Fang Hong 77
Also called FengYun 3A or FY-3A
To replace
DFH 54 (FY-1D)
This is the first satellite in China's second-generation polar orbiting weather
satellites. Once completed, the system will have 6 operational satellites in
orbit.
sat-index articles
Prime
contractor
|
Shanghai
Aerospace Administration
|
Platform
|
|
Mass
at launch
|
2295
kg
|
Dry
mass
|
|
Dimension
|
4.4
x 2.0 x 2.0 m
|
Solar
array
|
|
Stabilization
|
3-axis
|
DC
power
|
1.1
kW
|
Design
lifetime
|
|
11 instruments including:
VIRR (Visible and Infrared Radiometer) will provide intensities in ten
wavelength channels, most of them in infrared.
MODI is a moderate resolution imager that provides images in 19 wavelength
bands ranging from 0.47 nm through 1.03 nm, plus an image at the far-infrared
11.5 nm band.
MWRI (Microwave Radiation Imager) will provide images in GHz bands of 10.65,
18.7, 23.8, 36.5, 89, and 150 GHz thermal emissions from land and oceans.
IRAS (Infrared Atmospheric Sounder) is a "sounder" that provides altitude
distribution of aerosols and carbon dioxides in the stratosphere, in 20
wavelength channels.
MWTS (Microwave atmospheric Temperature Sounder) is an eight-channel (19.35,
23.9, 31.0, 50.31, 53.74, 54.96, 57.95, and 89 GHz) "sounder" to sense the
vertical atmospheric temperature profile.
In addition, it carries, an ozone mapper/profiler, a radiation budget monitor,
and a space environment probe to monitor energetic particle fluxes.