Sensor · Spaceborne

HY-1C Satellite Calibration Spectrometer

Calibration spectrometer payload flown on HY-1C for ocean-colour instrument support.

Sensor

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.

Operator pricing

Pricing not publicly listed by operator

Supply chain position

carried by HY-1C

Methods this sensor implements

Demonstrated

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.

Capable, undemonstrated

None on record.

Topics this relates to

Ocean heat content Cross-sensor harmonization and calibration transfer(demonstrated)adequate

Ocean salinity Cross-sensor harmonization and calibration transfer(demonstrated)adequate

Sources

[1]WMO OSCAR satellite record: HY-1Cagency doc-2026-06-16
[2]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
[3]HY-1C mission page, National Satellite Ocean Application Serviceagency doc-2026-06-16

Cite https://eo-atlas.org/products/sensor/hy-1c-scs Markdown twin → Field definitions → Suggest a correction →

How to cite this page

Plain text

HY-1C Satellite Calibration Spectrometer. EO-Atlas, SpectraWorks B.V. https://eo-atlas.org/products/sensor/hy-1c-scs (CC BY 4.0)

BibTeX

@misc{eoatlas:products:sensor:hy-1c-scs,
  title = {HY-1C Satellite Calibration Spectrometer},
  author = {{EO-Atlas}},
  publisher = {SpectraWorks B.V.},
  note = {CC BY 4.0},
  url = {https://eo-atlas.org/products/sensor/hy-1c-scs}
}