# CFOSAT Scatterometer (SCAT)
*component . products*

Ku-band scatterometer flown on CFOSAT for sea-surface wind measurement; WMO OSCAR records the instrument as inactive after degradation in 2022.

## Specifications
- **product status**: retired
- **deployment context**: orbital
- **manufacturer**: cast
- **entity type**: component
- **last verified date**: 2026-06-16
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: cast
- **attributes**: {"kind":"component","product_status":"retired","deployment_context":"orbital","manufacturer":"cast","description":"Ku-band scatterometer flown on CFOSAT for sea-surface wind measurement; WMO OSCAR records the instrument as inactive after degradation in 2022."}
- **relevance**: in-scope

## Editorial
CFOSAT Scatterometer (SCAT), also recorded as CSCAT, was the rotating fan-beam Ku-band scatterometer flown on CFOSAT for sea-surface vector wind measurement.[^wmo-cscat-instrument] The instrument operated at 13.256 GHz with dual co-polarised HH and VV measurements.[^wmo-cscat-instrument] Its rotating fan-beam geometry provided a 1000 km swath, with 50 km high-quality data resolution, 10 km basic sampling and incidence angles from 18 to 50 degrees.[^wmo-cscat-instrument][^aviso-cfosat-scat] The scatterometer demonstrated radar scatterometry on CFOSAT for ocean wind retrieval.[^wmo-cscat-instrument] SCAT is inactive after 30 Nov 2022 because of degradation and stability issues; SWIM remained active on the same mission.[^wmo-cfosat-satellite]

## Compositional position
- cfosat (missions) --[mission_payloads]--> CFOSAT Scatterometer (SCAT)

## Sources
- [wmo-cfosat-satellite] | WMO OSCAR satellite record: CFOSAT | https://space.oscar.wmo.int/satellites/view/cfosat | tier=community | accessed=2026-06-16
- [wmo-cscat-instrument] | WMO OSCAR instrument record: CSCAT | https://space.oscar.wmo.int/instruments/view/cscat | tier=community | accessed=2026-06-16
- [aviso-cfosat-scat] | AVISO+ CFOSAT SCAT instrument page | https://www.aviso.altimetry.fr/en/missions/current-missions/cfosat/instruments/scat.html | tier=agency-doc | accessed=2026-06-16
- [cfosat-scat-tgrs-2020] | First Results From the Rotating Fan Beam Scatterometer Onboard CFOSAT | https://doi.org/10.1109/TGRS.2020.2990708 | tier=peer-reviewed | accessed=2026-06-16

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Source: https://eo-atlas.org/products/component/cfosat-scat
Maintainer: SpectraWorks B.V. (CC-BY 4.0)