EO·Atlas
HY-1C Satellite Calibration Spectrometer
Compiled from public sources on 2026-06-16. Not independently verified by China Academy of Space Technology.
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Calibration spectrometer payload flown on HY-1C for ocean-colour instrument support.
The HY-1C Satellite Calibration Spectrometer is a passive optical calibration imaging spectrometer carried on HY-1C.[1][2] Its role is onboard synchronous and cross-calibration support for HY-1C optical instruments, demonstrated through cross-sensor harmonization on the HY-1C mission.[3][1][2] The instrument uses two independent ultraviolet spectral channels and one visible/NIR spectral channel, with a recorded 400-900 nm spectral range and 5 nm spectral resolution.[2] Ground sampling is 1.1 km at nadir and the swath is 12 km from a +/-0.5 deg field of view.[2] A one-dimensional pointing mechanism supports +/-30 deg side-swing for cross-calibration viewing geometry.[2] WMO lists HY-1C as operational, with end-of-life at least 2026 in its 2026-01-19 update.[1] For buyers, SCS is a calibration-support sensor rather than a broad-swath ocean-colour imager: its value is traceability and cross-calibration geometry for optical-instrument product chains.
Compositional position
- Cross-sensor harmonization and calibration transfervia HY-1C
HY-1C SCS is an onboard calibration imaging spectrometer used for cross-calibration of HY-1C optical instruments.
None on record.
- [1]HY-1C mission page, National Satellite Ocean Application Serviceagency doc-2026-06-16
- [2]WMO OSCAR satellite record: HY-1Cagency doc-2026-06-16
- [3]Time Series Analysis-Based Long-Term Onboard Radiometric Calibration Coefficient Correction and Validation for the HY-1C Satellite Calibration Spectrometerpeer reviewed2022-09-272026-06-16