EO·Atlas
HY-2C
HY-2C (Hai Yang 2C) is the third ocean-dynamics flight unit in China's HY-2 series, operated by NSOAS. It was launched on 2020-09-21 and is operational as of WMO OSCAR's last update (2026-02-02). WMO OSCAR records a current orbit altitude of 1,336 km at 66 degree inclination; AVISO records an average geodetic height of approximately 957 km for the altimetry mission phase.[1][2]
HY-2C carries five payloads: a radar altimeter (ALT) for sea-surface height measurement; the HSCAT Ku-band scatterometer for ocean-wind vector retrieval; a calibration microwave radiometer (CMR) for passive microwave sensing and radiometric calibration; a DORIS receiver for precise orbit determination; and a laser retroreflector array (LRA) for satellite laser ranging.[1][3]
HY-2C forms part of a multi-satellite constellation with HY-2B and HY-2D to increase the temporal sampling of ocean-wind and sea-surface-height measurements. EUMETSAT's OSI SAF operationally processes HY-2C HSCAT wind data for near-real-time marine weather services.[4]
Supply chain position
- [1]WMO OSCAR satellite record: HY-2Ccommunity2026-06-14
- [2]AVISO+ mission page: HY-2Cagency doc2026-06-14
- [3]ILRS mission page: HY-2Cagency doc2026-06-14
- [4]HY-2B and HY-2C winds and services from the OSI SAFagency doc2026-06-14
How to cite this page
Plain text
HY-2C. EO-Atlas, SpectraWorks B.V. https://eo-atlas.org/missions/hy-2c (CC BY 4.0)
BibTeX
@misc{eoatlas:missions:hy-2c,
title = {HY-2C},
author = {{EO-Atlas}},
publisher = {SpectraWorks B.V.},
note = {CC BY 4.0},
url = {https://eo-atlas.org/missions/hy-2c}
}