BackForwardInstrument:  MI 

Instrument details
Acronym MI
Full name Meteorological Imager
Purpose Multi-purpose imagery and wind derivation by tracking clouds and water vapour features
Short description 5 VIS/MWIR/TIR channels [see detailed characteristics below]
Background New development
Scanning Technique Mechanical, 3-axis stabilised satellite, E-W continuous, S-N stepping
Resolution 1 km IFOV in 1 VIS channel, 4 km IFOV in 4 IR channels
Coverage / Cycle Full disk in 27 min.  Limited areas in correspondingly shorter time intervals
Mass 140.5 kg Power 147 W Data Rate 2.62 Mbps (Uncompressed)

 

Providing Agency KMA
Instrument Maturity Flown on operational programme
Utilization Period: 2011 to 2020
Last update: 2022-07-25
Detailed characteristics
Central wavelength Spectral interval SNR or NEΔT @ specified input
0.675 µm 0.55 - 0.8 µm 10 @ 5 % albedo, 170 @ 100 % albedo
3.75 µm 3.50 - 4.0 µm 0.10 K @ 300 K
6.75 µm 6.5 - 7.0 µm 0.12 K @ 300 K
10.8 µm 10.3 - 11.3 µm 0.12 K @ 300 K
12.0 µm 11.5 - 12.5 µm 0.20 K @ 300 K
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Earth observation instrument
  • Passive optical radiometer or spectrometer
  • Moderate resolution optical imager
WIGOS Subcomponents
  • Subcomponent 1
  • Multi-spectral VIS/IR imagery With rapid repeat cycles [in GEO]
  • Multi-spectral VIS/IR imager with rapid repeat cycles [in GEO]
Mission objectives
Primary mission objectives
  • Cloud cover
  • Cloud top height
  • Cloud top temperature
  • Cloud type
  • Integrated Water Vapour (IWV)
  • Wind (horizontal)
Evaluation of Measurements