Ku-band Scatterometer

E906295

scatterometer spaceborne microwave radar instrument

The Ku-band Scatterometer is a microwave radar instrument used on satellites to measure ocean surface wind speed and direction by detecting radar backscatter from the sea surface.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (3)

Label	Occurrences
Ku-band Scatterometer canonical	2
ASCAT	1
Ku-band Scatterometer (SCAT-3)	1

How this entity was disambiguated

This entity first appeared as the object of triple T11108696 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Ku-band Scatterometer
Context triple: [Oceansat-2, instrument, Ku-band Scatterometer]

A. Advanced Microwave Scanning Radiometer for EOS
The Advanced Microwave Scanning Radiometer for EOS is a satellite-borne microwave radiometer that measures global precipitation, sea surface temperature, sea ice, and other climate-related variables to support Earth observation and weather and climate research.
B. GPM Microwave Imager
GPM Microwave Imager is a spaceborne radiometer on NASA and JAXA’s Global Precipitation Measurement core satellite that measures microwave emissions from Earth’s atmosphere to retrieve global rainfall and snowfall.
C. RADARSAT-2
RADARSAT-2 is a Canadian Earth observation satellite equipped with advanced synthetic aperture radar (SAR) technology used for environmental monitoring, resource management, and surveillance.
D. Aqua satellite
Aqua is a NASA Earth observation satellite focused on studying the planet’s water cycle, including oceans, atmosphere, and ice.
E. Shuttle Imaging Radar-B
Shuttle Imaging Radar-B was a spaceborne synthetic aperture radar instrument flown on the Space Shuttle to study Earth's surface and environmental features through all-weather, day-and-night imaging.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Ku-band Scatterometer
Target entity description: The Ku-band Scatterometer is a microwave radar instrument used on satellites to measure ocean surface wind speed and direction by detecting radar backscatter from the sea surface.

A. Advanced Microwave Scanning Radiometer for EOS
The Advanced Microwave Scanning Radiometer for EOS is a satellite-borne microwave radiometer that measures global precipitation, sea surface temperature, sea ice, and other climate-related variables to support Earth observation and weather and climate research.
B. GPM Microwave Imager
GPM Microwave Imager is a spaceborne radiometer on NASA and JAXA’s Global Precipitation Measurement core satellite that measures microwave emissions from Earth’s atmosphere to retrieve global rainfall and snowfall.
C. RADARSAT-2
RADARSAT-2 is a Canadian Earth observation satellite equipped with advanced synthetic aperture radar (SAR) technology used for environmental monitoring, resource management, and surveillance.
D. Aqua satellite
Aqua is a NASA Earth observation satellite focused on studying the planet’s water cycle, including oceans, atmosphere, and ice.
E. Shuttle Imaging Radar-B
Shuttle Imaging Radar-B was a spaceborne synthetic aperture radar instrument flown on the Space Shuttle to study Earth's surface and environmental features through all-weather, day-and-night imaging.
F. None of above. chosen

Statements (39)

Predicate	Object
instanceOf	scatterometer ⓘ spaceborne microwave radar instrument ⓘ
advantage	all-weather wind measurements except in heavy rain ⓘ day-and-night operation ⓘ
application	air–sea interaction studies ⓘ climate monitoring ⓘ marine meteorology ⓘ numerical weather prediction ⓘ oceanography ⓘ
dataProduct	backscatter coefficient maps ⓘ ocean surface wind vector fields ⓘ
dataUsedFor	climate trend analysis of winds ⓘ reanalysis datasets ⓘ validation of numerical weather prediction models ⓘ
measurementPrinciple	radar backscatter from sea surface ⓘ
mountedOn	Earth observation satellites ⓘ
operatesFrom	low Earth orbit ⓘ
operatesIn	microwave spectrum ⓘ
operatesOver	global oceans ⓘ
outputUnit	degrees for wind direction ⓘ meters per second for wind speed ⓘ
primaryMeasurement	ocean surface wind direction ⓘ ocean surface wind speed ⓘ
relatedTo	C-band scatterometer ⓘ L-band scatterometer ⓘ
requires	antenna scanning over swath ⓘ calibration of radar backscatter ⓘ geophysical model function for wind retrieval ⓘ onboard radar receiver ⓘ onboard radar transmitter ⓘ
senses	normalized radar cross section of sea surface ⓘ
supports	hurricane and storm monitoring ⓘ sea state analysis ⓘ weather forecasting ⓘ
technique	active microwave remote sensing ⓘ
typicalFrequencyRange	approximately 12–18 GHz ⓘ
usedBy	meteorological agencies ⓘ oceanographic research institutions ⓘ
usesFrequencyBand	Ku-band ⓘ

How these facts were elicited

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Oceansat-2 → instrument → Ku-band Scatterometer ⓘ

Metop satellites → carriesInstrument → ASCAT ⓘ

linked to: Ku-band Scatterometer

Oceansat-2 → payload → Ku-band Scatterometer ⓘ

subject linked to: Oceansat series

Oceansat-3 → payload → Ku-band Scatterometer (SCAT-3) ⓘ