EO·Atlas
Infrared Multispectral Scanner - 2
Compiled from public sources on 2026-06-16. Not independently verified by China Academy of Space Technology.
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Four-channel NIR/SWIR/MWIR/TIR infrared multispectral scanner carried by HJ-2A for disaster-monitoring land observation, with 720 km swath and 48 m resolution.
Infrared Multispectral Scanner - 2 (HJ) is a four-channel passive optical radiometer for HJ-2 wide-swath infrared imaging. It covers NIR, SWIR, MWIR and TIR spectral regions from 750 nm to 12.5 um, uses pushbroom scanning, and provides a 720 km swath with a four-day global coverage cycle.[1][2] Spatial resolution is given as 48 m at the sub-satellite point and as a paired 48/96 m infrared imaging capability in HJ-family material.[1][3] On HJ-2A observations, the instrument has demonstrated land-surface-temperature and emissivity retrieval, sea-surface-temperature retrieval and thermal-anomaly detection use cases.[1]
Compositional position
- Land-surface temperature - emissivity retrievalvia Huan Jing-2A
IRMSS-2 includes MWIR/TIR window channels and WMO lists land surface temperature as a high-relevance variable.
- Thermal anomaly detectionvia Huan Jing-2A
IRMSS-2 MWIR/TIR channels are primary for fire temperature, fire radiative power, and fire fractional cover in WMO OSCAR.
- Sea-surface temperature retrievalvia Huan Jing-2A
IRMSS-2 MWIR/TIR channels have WMO-listed sea-surface-temperature relevance.
None on record.
- [1]WMO OSCAR instrument record: IRMSS-2 (HJ)agency doc2026-06-16
- [2]CEOS MIM instrument summary: IRMSS-2 (HJ-2)agency doc2026-06-16
- [3]WMO OSCAR satellite record: HJ-2Aagency doc2026-06-16
- [4]CAST optical remote sensing satellites: HJ familyoperator engineering2026-06-16