Haiyang-1B(HY-1B)
satellite is the successor of China’s first ocean satellite (HY-1A), it takes the
10-bands Chinese Ocean Color and Temperature Scanner (COCTS) and the 4-bands
CCD imager.
It
was developed based on HY-1A satellite, its observing ability and accuracy was
enhanced and improved. Mainly used for the observing of chlorophyll
concentration, suspended sediment concentration, dissolved organic matter, sea
surface temperature and the monitoring of the dynamic change of costal zone,
providing service for the development of marine economy and the building of
defense.
1.
Satellite and orbit characteristics
|
Orbit type |
Sun-synchronous near-circular
orbit |
|
Altitude |
798km |
|
Nodal Period |
100.83 minutes |
|
Equator crossing time |
10:30±30AM(descending node) |
|
Global Coverage |
1 day for COCTS and 7 days for
CZI |
|
Attitude control |
3 axis stabilized |
|
DT band (payload) |
X-band downlink |
|
Downlink rate |
6.654Mpbs |
|
Mass |
442.5kg |
|
Design life |
3 years |
2.
Major observation
parameters and areas
Real-time observation areas: Bohai, Yellow Sea, East China Sea, South China Sea and
coastal zone, etc.
Other observation areas: using on-board recording,
playback and reception in China.
Major observation parameters: chlorophyll concentration,
suspended sediment concentration, dissolved organic matter, sea surface
temperature, etc.
3.
Sensor characteristics
of COCTS
|
Band
range (um) |
B1:
0.402~0.422
B2: 0.433~0.453 B3:0.480~0.500 B4: 0.510~0.530 B5: 0.555~0.575 B6: 0.660~0.680 B7: 0.740~0.760 B8: 0.845~0.885 B9: 10.30~11.40 B10: 11.40~12.50 |
|
Band center
wavelength shift |
≤2nm
(B1~B8) |
|
Spatial
resolution at nadir |
≤1100m |
|
Pixels
per scan line |
1664 |
|
Data
quantization |
10
bits |
|
Radiometer
accuracy |
Visible band: 10% IR band: ±1k (for onboard calibration accuracy 300k) |
4.
Sensor characteristics
of CZI
|
Band
range (um) |
B1:
0.433~0.453 B2:
0.555~0.575 B3:
0.655~0.675 B4:
0.675~0.695 |
|
Band center
wavelength shift |
≤2nm |
|
Spatial
resolution at nadir |
250m |
|
Pixels
per scan line |
2048 |
|
Data
quantization |
12
bits |
