BackForwardInstrument:  S-VISSR (FY-2F/G/H) 

Instrument details
Acronym S-VISSR (FY-2F/G/H)
Full name Stretched Visible and Infrared Spin Scan Radiometer
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 Follow-on of S-VISSR flown on FY-2C/D/E, with narrower VIS bandwidth and improved radiometric performance
Scanning Technique Mechanical, spinning satellite, E-W continuous, S-N stepping
Resolution 5.0 km for IR channels; 1.25 km for the VIS channel
Coverage / Cycle Full disk every 30 min. Limited areas in correspondingly shorter time intervals
Mass 82 kg Power 75 W Data Rate 14 Mbps

 

Providing Agency CMA
Instrument Maturity Flown on operational programme
Utilization Period: 2012 to 2025
Last update: 2022-08-08
Detailed characteristics

Spectral interval

SNR or NEΔT @ specified input

0.55 - 0.75 µm

1.2 @ 1 % albedo

3.50 - 4.00 µm

0.20-0.26 K  @ 300 K

6.30 - 7.60 µm

0.11-0.30 K  @ 300 K

10.3 - 11.3 µm

0.10-0.14 K  @ 300 K

11.5 - 12.5 µm

0.12-0.16 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