Description
MVISR used to fly on FY-1C/D satellites (service period 1999-2011). It is a 10 channel radiometer with observational resolution 1100 m at the nadir point of the satellite. The measurement of the instrument can be used to derive the vegetation index, optical path of the atmosphere, sea color; to monitor fires, snow, sea ice, and so on.
When FY-1 program ended, the mission of MVISR was taken over by VIRR instrument on the FY-3A/B/C. The function of VIRR remains the same as the MVISR for the sake of observational continuity.
| Satellite |
FY-1A ,
FY-1B ,
FY-1C ,
FY-1D
|
| Scan rate |
6 lines/s |
| Scan angel |
±55.4º |
| No. Channels |
1.1km |
| Quantification grade |
10 bit |
| Weight |
55kg |
| Power |
45W |
Characteristics
| Central wavelength (µm) |
Bandwidth (µm) |
SNR / NEΔT |
FY-1A/B |
FY-1C/D |
|
0.455 |
0.43~0.46 |
3.0 @ 0.5% |
|
|
| 0.505 |
|
0.48~0.53 |
3.0 @ 0.5% |
|
|
| 0.555 |
|
0.53~0.58 |
3.0 @ 0.5% |
|
|
| 0.63 |
|
0.58~0.68 |
3.0 @ 0.5% |
|
|
| 0.912 |
|
0.725~1.1 |
3.0 @ 0.5% |
|
|
| 0.865 |
0.84~0.89 |
3.0 @ 0.5% |
|
|
| 0.932 |
0.900~0.965 |
3.0 @ 0.5% |
|
|
|
1.610 |
1.58~1.64 |
3.0 @ 0.5% |
|
|
|
3.750 |
3.55~3.93 |
0.22K @ 300K |
|
|
| 11.5 |
|
10.5~12.5 |
0.22K @ 300K |
|
|
| 10.80 |
10.3~11.3 |
0.22K @ 300K |
|
|
| 12.00 |
11.5~12.5 |
0.40K @ 300K |
|
|
Data and Products