VIRR is a scanner carried aboard the third FengYun ("Wind and Cloud") series of meteorological satellites launched by China.
FY-3A, launched June 2008, operates from a sunsynchronous polar-orbit at an average altitude of 836.4km. At this orbit FY-3A crosses overhead at about 10:10 a.m. local time everyday.
FY-3A carries a version of VIRR which images 10 spectral bands:
| Channel | Wavelength (um) | Primary Use |
|---|---|---|
| 1 | 0.58-0.68 | |
| 2 | 0.84-0.89 | |
| 3 | 3.55-3.95 | |
| 4 | 10.3-11.3 | |
| 5 | 11.5-12.5 | |
| 6 | 1.58-1.64 | |
| 7 | 0.43-0.48 | |
| 8 | 0.48-0.53 | |
| 9 | 0.53-0.58 | |
| 10 | 1.325-1.395 |
See Also: MERSI on the same spacecraft
See Also: EOPortal
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