Measurements and Applications
A multiple-channel radiation imager, one of the primary instruments aboard FY-4. Technically featured by a precisely designed two-mirror structure, capable of accurate and flexible sensing in two dimensions, and minute-level fast regional scanning. Frequent Earth imaging over 14 bands with off-axis three reflections of the primary optic system. On-board black body available for IR calibrations at very short time intervals.
Full Name
Advanced Geostationary Radiation Imager
Status
Operational
Instrument Agencies
Maturity
Instrument Type
Imaging multi-spectral radiometers (vis/IR) 
Geometry
Earth disk scanning
Instrument Technology
Multi-purpose imaging Vis/IR radiometer
Sampling
Imaging
Data Access
Constrained Access
Data Format
L-1 data: HDF 5.0
Resolution
0.5-1 km VIS, 2 km NIR, 4 km TIR
[Best Resolution: 500m]
Accuracy
radiation calibration accuracy: IR:0.7k, VIS/NIR :3-5%
Waveband
15 channels from 0.45 - 13.6 µm
| VIS (~0.40 µm - ~0.75 µm) |
| NIR (~0.75 µm - ~1.3 µm) |
| SWIR (~1.3 µm - ~3.0 µm) |
| MWIR (~3.0 µm - ~6.0 µm) |
| TIR (~6.0 µm - ~15.0 µm) |
FY-4B - FY-4B Geostationary Meteorological Satellite (2021 - 2028) |