Ku-band Scatterometer
E906295
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ku-band Scatterometer canonical | 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
GENERATED
ⓘ
ocean surface wind speed GENERATED ⓘ |
| 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
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Ku-band Scatterometer Description of subject: 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.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.