missions

HY-1D

HY-1D (Hai Yang 1D) is the fourth HY-1 series ocean observation satellite operated by NSOAS. It was launched on 2020-06-11 from Taiyuan (NSOAS operator report; WMO OSCAR records 2020-06-10 UTC). HY-1D flies in a sun-synchronous orbit at approximately 798 km altitude with a 13:30 ascending equator crossing. WMO OSCAR records HY-1D as operational as of its last update.^[1]^[2]

HY-1D carries five payloads: the Chinese Ocean Colour and Temperature Scanner (COCTS) for ocean colour and sea-surface temperature; the Coastal Zone Imager (CZI) for high-resolution coastal observation; the Ultraviolet Imager (UVI) for atmospheric correction support; a Spectral Calibration Spectrometer (SCS) for on-orbit spectral calibration; and an Automatic Identification System (AIS) receiver for vessel tracking.^[2]

Data are distributed by NSOAS and support global ocean colour, sea-surface temperature, coastal zone monitoring, and maritime domain awareness.^[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 Satellite Calibration Spectrometer

carries instrument HY-1D Automatic Identification System

operated by National Satellite Ocean Application Service

launched on Casc Long March 2c

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

Sources

[1]WMO OSCAR satellite record: HY-1Dcommunity2026-06-14
[2]A new development journey of Ocean colour Satellitesoperator press2026-06-14

Cite https://eo-atlas.org/missions/hy-1d Markdown twin → Field definitions → Suggest a correction →

How to cite this page

Plain text

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

BibTeX

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