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HY-1C

HY-1C (Hai Yang 1C) is the third HY-1 series ocean observation satellite operated by NSOAS, and the first operational unit of the HY-1C/HY-1D generation. It was launched on 2018-09-07 and flies in a sun-synchronous orbit at 785 km altitude with a 10:30 descending equator crossing and a 7-day repeat cycle. WMO OSCAR records it as operational as of 2026-01-19.[1]

HY-1C carries five payloads. The Chinese Ocean Colour and Temperature Scanner (COCTS) provides 10-band multispectral imagery for ocean colour and sea-surface temperature retrieval; WMO and IOCCG report COCTS swath as 2,900 km and 3,000 km respectively.[1][2] The Coastal Zone Imager (CZI) delivers higher-resolution four-band imagery for nearshore and land-coastal boundary observation.[3] The Ultraviolet Imager (UVI) appears in the WMO OSCAR instrument set as an active payload on HY-1C.[1] An Automatic Identification System (AIS) receiver provides vessel tracking capability, and a Spectral Calibration Spectrometer (SCS) supports on-orbit calibration.[1]

NSOAS operates the satellite and distributes data supporting ocean colour, sea-surface temperature, and coastal zone monitoring applications.[1]

Supply chain position

carries instrument China Ocean Colour and Temperature Scanner
carries instrument Coastal Zone Imager
carries instrument HY Ultraviolet Imaging and Calibration Sensor
carries instrument HY-1C Satellite Calibration Spectrometer
carries instrument HY-1C Automatic Identification System
operated by National Satellite Ocean Application Service
launched on Casc Long March 2c
related to Coastal water quality
related to Marine primary production
related to Sea surface temperature
related to Vessel tracking
Ocean colour / water-leaving radiance → demonstrated China Ocean Colour and Temperature Scanner
Sea-surface temperature retrieval → demonstrated China Ocean Colour and Temperature Scanner
Multispectral optical imaging → demonstrated China Ocean Colour and Temperature Scanner
Thermal infrared imaging → demonstrated China Ocean Colour and Temperature Scanner
Optical time-series change detection → capable Coastal Zone Imager
Ocean colour / water-leaving radiance → capable pending review Coastal Zone Imager
Vegetation index mapping → capable Coastal Zone Imager
Multispectral optical imaging → capable Coastal Zone Imager
Ocean colour / water-leaving radiance → demonstrated HY Ultraviolet Imaging and Calibration Sensor
Cross-sensor harmonization and calibration transfer → demonstrated HY Ultraviolet Imaging and Calibration Sensor
Cross-sensor harmonization and calibration transfer → demonstrated HY-1C Satellite Calibration Spectrometer
Sources
Cite https://eo-atlas.org/missions/hy-1c Markdown twin → Field definitions → Suggest a correction →
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Plain text

HY-1C. EO-Atlas, SpectraWorks B.V. https://eo-atlas.org/missions/hy-1c (CC BY 4.0)

BibTeX

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