BackForwardInstrument:  HAOC 

Instrument details
Acronym HAOC
Full name High Accuracy On-board Calibrator
Purpose To provide an absolute radiance reference for VIS/SWIR observations. Spectral range: 400nm-2300nm. Spectral resolution: 5 nm(<1000nm), 20nm (>1000nm)
Short description A VIS/SWIR imaging spectrometer. Through its high-precision spectral imaging observations of the Earth and the Moon, it can achieve radiation reference transfer to other optical imagers on different platforms.
Background Instrument to support climate quality radiance measurements in the VIS/SWIR spectral regions.
Scanning Technique
Coverage / Cycle
Mass Power Data Rate


Providing Agency CMA
Instrument Maturity Demonstration pending
Utilization Period: 2023 to 2029
Last update: 2023-05-08
Detailed characteristics
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
  • On-orbit measurement reference standards for VIS/NIR, IR, MW absolute calibration.
  • On-orbit measurement reference standards for VIS/NIR, IR, MW absolute calibration.
Mission objectives
Primary mission objectives
  • Upward spectral radiance at TOA
Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
Note: * Primary mission objective.