# Infrared Multispectral Scanner - 2
*sensor . products*

Four-channel VIS/SWIR/TIR radiometer listed by WMO OSCAR and CEOS as an HJ-2B payload for land observation and natural-disaster monitoring.

## Specifications
- **product status**: operational
- **deployment context**: orbital
- **manufacturer**: cast
- **sensor**: {"instrument_family":"passive-optical","measurement_principle":"passive","spectral_range_nm":{"min":500,"max":12500},"spectral_band_count":4,"gsd_m":{"native":40},"swath_km":120,"channels":[{"name":"VIS/SWIR","spectral_range_nm":{"min":500,"max":2350},"spectral_band_count":3,"gsd_m":{"native":40}},{"name":"TIR","spectral_range_nm":{"min":10400,"max":12500},"spectral_band_count":1,"gsd_m":{"native":80}}]}
- **entity type**: sensor
- **last verified date**: 2026-06-16
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: cast
- **attributes**: {"kind":"sensor","product_status":"operational","deployment_context":"orbital","manufacturer":"cast","description":"Four-channel VIS/SWIR/TIR radiometer listed by WMO OSCAR and CEOS as an HJ-2B payload for land observation and natural-disaster monitoring.","sensor":"{\"instrument_family\":\"passive-optical\",\"measurement_principle\":\"passive\",\"spectral_range_nm\":{\"min\":500,\"max\":12500},\"spectral_band_count\":4,\"gsd_m\":{\"native\":40},\"swath_km\":120,\"channels\":[{\"name\":\"VIS/SWIR\",\"spectral_range_nm\":{\"min\":500,\"max\":2350},\"spectral_band_count\":3,\"gsd_m\":{\"native\":40}},{\"name\":\"TIR\",\"spectral_range_nm\":{\"min\":10400,\"max\":12500},\"spectral_band_count\":1,\"gsd_m\":{\"native\":80}}]}"}
- **relevance**: in-scope

## Editorial
Infrared Multispectral Scanner - 2 is a four-channel passive optical radiometer for VIS/SWIR and thermal-infrared land imaging. It uses a pushbroom design with three VIS/SWIR bands from 500 to 2350 nm at 40 m sampling and one thermal band from 10.4 to 12.5 um at 80 m, with a 120 km swath, 26-day global coverage cycle and 17 Mbps data rate.[^wmo-irmss2] The 120 km IRMSS-2 configuration is distinct from the HJ wide-swath configuration, which has different spectral-region grouping, swath and sampling specifications.[^wmo-irmss2]

## Compositional position
- hj-2b (missions) --[mission_payloads]--> Infrared Multispectral Scanner - 2

## Sources
- [wmo-irmss2] | WMO OSCAR instrument record: IRMSS-2 | https://space.oscar.wmo.int/instruments/view/irmss_2 | tier=agency-doc | accessed=2026-06-16
- [ceos-hj2b] | CEOS MIM mission summary: HJ-2B | https://database.eohandbook.com/database/missionsummary.aspx?missionID=948 | tier=agency-doc | accessed=2026-06-16

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Source: https://eo-atlas.org/products/sensor/irmss-2
Maintainer: SpectraWorks B.V. (CC-BY 4.0)