EO·Atlas
HY-2B
HY-2B (Hai Yang 2B) is the second ocean-dynamics satellite in China's HY-2 series, operated by NSOAS. It was launched on 2018-10-25 and is in extended operational service as of early 2026. HY-2B flies in a sun-synchronous orbit; the stored altitude is 973 km from WMO/AVISO geodetic records, while CEOS records 963 km and AVISO notes phase-dependent orbit history.[1][2][3]
The satellite carries four instruments: a radar altimeter for sea-surface height measurement; the HY-SCAT (HSCAT) Ku-band scatterometer for ocean surface wind vector retrieval; the Microwave Radiation Imager (MWRI) for passive microwave measurement of sea-surface temperature, precipitation, sea ice, and soil moisture; and a calibration microwave radiometer (CMR).[4][5]
HY-2B is part of a multi-satellite HY-2 constellation that also includes HY-2C and HY-2D, together providing improved temporal sampling of global ocean-wind and sea-surface-height fields. Data products are distributed by NSOAS and are used by the EUMETSAT OSI SAF for operational wind services.[2]
Supply chain position
- [1]HY-2B, WMO OSCAR satellite recordcommunity2026-06-14
- [2]AVISO+ mission page: HY-2Bagency doc2026-06-14
- [3]HY-2B mission summary, CEOS EO Handbookcommunity2026-06-14
- [4]HSCAT, WMO OSCAR instrument recordcommunity2026-06-14
- [5]MWRI (HY-2), WMO OSCAR instrument recordcommunity2026-06-14
How to cite this page
Plain text
HY-2B. EO-Atlas, SpectraWorks B.V. https://eo-atlas.org/missions/hy-2b (CC BY 4.0)
BibTeX
@misc{eoatlas:missions:hy-2b,
title = {HY-2B},
author = {{EO-Atlas}},
publisher = {SpectraWorks B.V.},
note = {CC BY 4.0},
url = {https://eo-atlas.org/missions/hy-2b}
}