Sensor · Spaceborne

Infrared Multispectral Scanner - 2

Missions → Huan Jing-2A (Operational)

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.

Sensor

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]

Operator pricing

Pricing not publicly listed by operator

Supply chain position

carried by Huan Jing-2A

Methods this sensor implements

Demonstrated

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.
Multispectral optical imaging
[wmo-irmss2-hj] NIR and SWIR channels within a 750 nm to 12.5 um channel set at 48 m on HJ-2; edge covers its reflective channels only.
Thermal infrared imagingvia Huan Jing-2A
[wmo-irmss2-hj] Four-channel scanner with MWIR and TIR coverage to 12.5 um; edge covers its infrared channels.

Capable, undemonstrated

None on record.

Topics this relates to

Building thermal performance Land-surface temperature - emissivity retrieval(demonstrated)well suited

Irrigation monitoring Land-surface temperature - emissivity retrieval(demonstrated)well suited

Sea surface temperature Land-surface temperature - emissivity retrieval(demonstrated)well suited

Urban heat island Land-surface temperature - emissivity retrieval(demonstrated)well suited

Vector-borne disease risk Land-surface temperature - emissivity retrieval(demonstrated)well suited

Crop stress and yield Land-surface temperature - emissivity retrieval(demonstrated)adequate

Drought Land-surface temperature - emissivity retrieval(demonstrated)adequate

Harmful algal blooms Land-surface temperature - emissivity retrieval(demonstrated)adequate

Permafrost and ground ice Land-surface temperature - emissivity retrieval(demonstrated)adequate

Wildfire Land-surface temperature - emissivity retrieval(demonstrated)adequate

Coastal water quality Land-surface temperature - emissivity retrieval(demonstrated)marginal

Marine primary production Land-surface temperature - emissivity retrieval(demonstrated)marginal

Mineral exploration Land-surface temperature - emissivity retrieval(demonstrated)marginal

Pasture and grazing Land-surface temperature - emissivity retrieval(demonstrated)marginal

Solar energy siting and monitoring Land-surface temperature - emissivity retrieval(demonstrated)marginal

Urban change Land-surface temperature - emissivity retrieval(demonstrated)marginal

Wind energy siting Land-surface temperature - emissivity retrieval(demonstrated)marginal

Snow cover Multispectral optical imaging(demonstrated)well suited

Cloud properties Multispectral optical imaging(demonstrated)adequate

Coastal erosion Multispectral optical imaging(demonstrated)adequate

Crop-type mapping Multispectral optical imaging(demonstrated)adequate

Deforestation Multispectral optical imaging(demonstrated)adequate

Flooding Multispectral optical imaging(demonstrated)adequate

Illegal construction Multispectral optical imaging(demonstrated)adequate

Land cover change Multispectral optical imaging(demonstrated)adequate

Terrain elevation Multispectral optical imaging(demonstrated)adequate

Crop phenology Multispectral optical imaging(demonstrated)marginal

Inland water Multispectral optical imaging(demonstrated)marginal

Ocean heat content Sea-surface temperature retrieval(demonstrated)marginal

Industrial emissions Thermal anomaly detection(demonstrated)well suited

Geology and geohazards Thermal anomaly detection(demonstrated)adequate

Weather nowcasting Thermal anomaly detection(demonstrated)adequate

Air quality Thermal anomaly detection(demonstrated)marginal

CO2 Thermal anomaly detection(demonstrated)marginal

Disaster damage assessment Thermal anomaly detection(demonstrated)marginal

Economic activity intelligence Thermal anomaly detection(demonstrated)marginal

Illegal and unregulated fishing Thermal anomaly detection(demonstrated)marginal

Oil spills Thermal anomaly detection(demonstrated)marginal

Pipeline integrity Thermal anomaly detection(demonstrated)marginal

Shipping emissions Thermal anomaly detection(demonstrated)marginal

Sources

[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]CAST optical remote sensing satellites: HJ familyoperator engineering2026-06-16
[4]WMO OSCAR satellite record: HJ-2Aagency doc2026-06-16

Cite https://eo-atlas.org/products/sensor/irmss-2-hj Markdown twin → Field definitions → Suggest a correction →

How to cite this page

Plain text

Infrared Multispectral Scanner - 2. EO-Atlas, SpectraWorks B.V. https://eo-atlas.org/products/sensor/irmss-2-hj (CC BY 4.0)

BibTeX

@misc{eoatlas:products:sensor:irmss-2-hj,
  title = {Infrared Multispectral Scanner - 2},
  author = {{EO-Atlas}},
  publisher = {SpectraWorks B.V.},
  note = {CC BY 4.0},
  url = {https://eo-atlas.org/products/sensor/irmss-2-hj}
}