Sensor · Spaceborne

HY Ultraviolet Imaging and Calibration Sensor

Missions → HY-1D (Operational) , HY-1C (Operational)

Ultraviolet imaging and calibration sensor flown on HY-1D.

Sensor

The HY Ultraviolet Imaging and Calibration Sensor (UVI) is a passive UV-A instrument flown on the HY-1D ocean colour satellite.^[1] It carries two UV-A spectral bands centred at approximately 355 nm (345-365 nm range) and 385 nm (375-395 nm range), each with approximately 20 nm bandwidth.^[1] Spatial resolution and swath parameters are not publicly disclosed by the operator.^[1]^[2] The UVI serves two documented functions in the HY-1D payload complement: providing atmospheric correction inputs for turbid coastal water colour retrieval, and supporting vicarious calibration of the co-flown Chinese Ocean Colour and Temperature Scanner (COCTS).^[3]^[1] Vicarious calibration using the UVI has been validated against in-situ measurements for ocean colour retrieval on the HY-1C mission.^[3]

Operator pricing

Pricing not publicly listed by operator

Supply chain position

carried by HY-1D

carried by HY-1C

Methods this sensor implements

Demonstrated

Ocean colour / water-leaving radiancevia HY-1D
UVI provides UV-A radiance at 355nm and 385nm used for vicarious calibration of COCTS ocean colour products and atmospheric correction of turbid coastal waters; demonstrated operationally on HY-1D
Cross-sensor harmonization and calibration transfervia HY-1D
UVI co-calibrates with SCS (Satellite Calibration Spectrometer) on the same platform and provides inter-mission harmonisation reference at UV-A wavelengths; used in vicarious calibration studies for HY-1C/1D COCTS

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

Coastal water quality Ocean colour / water-leaving radiance(demonstrated)well suited

Harmful algal blooms Ocean colour / water-leaving radiance(demonstrated)well suited

Inland water Ocean colour / water-leaving radiance(demonstrated)well suited

Marine primary production Ocean colour / water-leaving radiance(demonstrated)well suited

Greenhouse gas inventory Ocean colour / water-leaving radiance(demonstrated)adequate

Illegal and unregulated fishing Ocean colour / water-leaving radiance(demonstrated)adequate

Coastal erosion Ocean colour / water-leaving radiance(demonstrated)marginal

Sources

[1]HY-1C/1D mission page, eoPortaloperator engineering2026-06-16
[2]WMO OSCAR satellite record: HY-1Dcommunity2026-06-16
[3]System vicarious calibration and ocean color retrieval from the HY-1C UVI, ScienceDirect 2025peer reviewed2026-06-16
[4]WMO OSCAR satellite record: HY-1Ccommunity2026-06-16
[5]Haiyang (satellite), Wikipediacommunity2026-06-16
[6]WMO OSCAR instrument record: UVI(HY)community2026-10-19

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

How to cite this page

Plain text

HY Ultraviolet Imaging and Calibration Sensor. EO-Atlas, SpectraWorks B.V. https://eo-atlas.org/products/sensor/hy-uvi (CC BY 4.0)

BibTeX

@misc{eoatlas:products:sensor:hy-uvi,
  title = {HY Ultraviolet Imaging and Calibration Sensor},
  author = {{EO-Atlas}},
  publisher = {SpectraWorks B.V.},
  note = {CC BY 4.0},
  url = {https://eo-atlas.org/products/sensor/hy-uvi}
}