# Second Generation Global Imager (SGLI)
*sensor . products*

Multichannel optical radiometer on GCOM-C, covering near-ultraviolet through thermal infrared observations for ocean, land, atmosphere, snow and ice products.

## Specifications
- **manufacturer**: nec-toshiba-space
- **deployment context**: orbital
- **sensor**: {"instrument_family":"passive-optical","measurement_principle":"passive","spectral_range_nm":{"min":380,"max":12000},"spectral_band_count":19,"gsd_m":{"native":250},"swath_km":1000,"channels":[{"name":"VNR","spectral_range_nm":{"min":380,"max":868.5},"spectral_band_count":13,"gsd_m":{"native":250}},{"name":"IRS","spectral_range_nm":{"min":1050,"max":12000},"spectral_band_count":6,"gsd_m":{"native":250}}]}
- **entity type**: sensor
- **last verified date**: 2026-06-16
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: nec-toshiba-space
- **attributes**: {"kind":"sensor","manufacturer":"nec-toshiba-space","deployment_context":"orbital","description":"Multichannel optical radiometer on GCOM-C, covering near-ultraviolet through thermal infrared observations for ocean, land, atmosphere, snow and ice products.","sensor":"{\"instrument_family\":\"passive-optical\",\"measurement_principle\":\"passive\",\"spectral_range_nm\":{\"min\":380,\"max\":12000},\"spectral_band_count\":19,\"gsd_m\":{\"native\":250},\"swath_km\":1000,\"channels\":[{\"name\":\"VNR\",\"spectral_range_nm\":{\"min\":380,\"max\":868.5},\"spectral_band_count\":13,\"gsd_m\":{\"native\":250}},{\"name\":\"IRS\",\"spectral_range_nm\":{\"min\":1050,\"max\":12000},\"spectral_band_count\":6,\"gsd_m\":{\"native\":250}}]}"}
- **relevance**: in-scope

## Editorial
The Second Generation Global Imager is a passive optical multi-channel radiometer carried by GCOM-C / Shikisai.[^jaxa-sgli-device][^jaxa-gcom-c] It combines VNR and IRS components across 19 channels, covering 380 nm to 12 um.[^jaxa-sgli-device][^wmo-sgli] The VNR side includes 11 non-polarization nadir channels plus two polarization/slant-view channels; the IRS side includes four SWIR and two thermal infrared channels.[^jaxa-sgli-device][^wmo-sgli] Native spatial resolution is channel dependent, from 250 m to 1 km, with WMO listing the thermal infrared channels at 500 m.[^jaxa-sgli-device][^wmo-sgli] Swath is roughly 1000 km or more depending on channel, with VNR and polarimetric channels documented at 1150 km and SWIR/TIR channels at 1400 km.[^jaxa-sgli-device][^wmo-sgli] Demonstrated uses include ocean-colour water-leaving radiance, multi-angle polarimetry, sea-surface-temperature retrieval and vegetation-index mapping on GCOM-C.[^jaxa-sgli-device][^wmo-sgli][^jaxa-gcom-c] SGLI succeeds GLI on ADEOS-II and is useful where one payload needs ocean, land, atmosphere, snow, ice and thermal observations from a consistent mission series.[^jaxa-sgli-device][^wmo-sgli]

## Compositional position
- gcom-c (missions) --[mission_payloads]--> Second Generation Global Imager (SGLI)

## Sources
- [jaxa-sgli-device] | SGLI sensor specifications, JAXA EORC | https://suzaku.eorc.jaxa.jp/GCOM_C/instruments/device.html | tier=agency-doc | accessed=2026-06-16
- [jaxa-gcom-c] | Global Change Observation Mission - Climate SHIKISAI, JAXA | https://global.jaxa.jp/projects/sat/gcom_c/ | tier=agency-doc | accessed=2026-06-16
- [wmo-sgli] | WMO OSCAR instrument record: SGLI | https://space.oscar.wmo.int/instruments/view/sgli | tier=agency-doc | accessed=2026-06-16
- [nec-sgli-tech] | Optical Sensor Technology Supporting Climate SHIKISAI, NEC technical journal | https://www.nec.com/en/global/techrep/journal/g21/n01/210112.html | tier=operator-engineering | accessed=2026-06-16
- [eoportal-gcom-c] | GCOM-C (Global Change Observation Mission - Climate), eoPortal | https://www.eoportal.org/satellite-missions/gcom-c1 | tier=community | accessed=2026-06-16

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