RADARSAT-1
E243739
RADARSAT-1 was Canada’s first commercial Earth observation radar satellite, renowned for its all-weather, day-and-night imaging capabilities used in environmental monitoring, resource management, and disaster response worldwide.
All labels observed (2)
| Label | Occurrences |
|---|---|
| RADARSAT-1 canonical | 7 |
| RADARSAT program | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2139091 — 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: RADARSAT-1 Context triple: [RADARSAT Constellation Mission, predecessor, RADARSAT-1]
-
A.
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.
-
B.
RADARSAT Constellation Mission
RADARSAT Constellation Mission is a Canadian Earth observation satellite system that uses advanced radar imaging to monitor environmental changes, support maritime surveillance, and assist in disaster management.
-
C.
SCISAT-1
SCISAT-1 is a Canadian scientific satellite dedicated primarily to studying Earth's upper atmosphere and monitoring ozone layer chemistry and related trace gases.
-
D.
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.
-
E.
Aqua satellite
Aqua is a NASA Earth observation satellite focused on studying the planet’s water cycle, including oceans, atmosphere, and ice.
- 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: RADARSAT-1 Target entity description: RADARSAT-1 was Canada’s first commercial Earth observation radar satellite, renowned for its all-weather, day-and-night imaging capabilities used in environmental monitoring, resource management, and disaster response worldwide.
-
A.
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.
-
B.
RADARSAT Constellation Mission
RADARSAT Constellation Mission is a Canadian Earth observation satellite system that uses advanced radar imaging to monitor environmental changes, support maritime surveillance, and assist in disaster management.
-
C.
SCISAT-1
SCISAT-1 is a Canadian scientific satellite dedicated primarily to studying Earth's upper atmosphere and monitoring ozone layer chemistry and related trace gases.
-
D.
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.
-
E.
Aqua satellite
Aqua is a NASA Earth observation satellite focused on studying the planet’s water cycle, including oceans, atmosphere, and ice.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Canadian spacecraft
ⓘ
Earth observation satellite ⓘ radar imaging satellite ⓘ |
| actualOperationalLife | over 17 years ⓘ |
| application |
agriculture monitoring
ⓘ
disaster management ⓘ environmental monitoring ⓘ flood mapping ⓘ forestry management ⓘ land use mapping ⓘ ocean surveillance ⓘ oil spill detection ⓘ resource management ⓘ sea ice charting ⓘ sea ice monitoring ⓘ |
| countryOfOrigin | Canada ⓘ |
| dataUsers |
commercial customers worldwide
ⓘ
international government agencies ⓘ |
| deactivationDate | 2013-03-29 ⓘ |
| designLife | 5 years ⓘ |
| imagingCapability |
all-weather imaging
ⓘ
day-and-night imaging ⓘ |
| imagingMode |
Fine mode
ⓘ
ScanSAR mode ⓘ Standard mode ⓘ Wide mode ⓘ |
| inclination | 98.6 degrees ⓘ |
| launchCountry |
United States of America
ⓘ
surface form:
United States
|
| launchDate | 1995-11-04 ⓘ |
| launchSite |
Space Launch Complex 2
ⓘ
surface form:
Space Launch Complex 2W
Vandenberg Space Force Base ⓘ
surface form:
Vandenberg Air Force Base
|
| launchVehicle |
Delta rocket
ⓘ
surface form:
Delta II 7920
|
| manufacturer | Spar Aerospace ⓘ |
| missionType |
Earth observation
ⓘ
remote sensing ⓘ |
| notableFeature | first commercial Earth observation radar satellite of Canada ⓘ |
| operator |
Canadian Space Agency
ⓘ
MDA ⓘ |
| orbitalPeriod | about 100 minutes ⓘ |
| orbitRegime | low Earth orbit ⓘ |
| orbitType | Sun-synchronous orbit ⓘ |
| powerSource | solar panels ⓘ |
| primaryInstrument | C-band synthetic aperture radar ⓘ |
| program | RADARSAT program ⓘ |
| radarFrequencyBand | C-band ⓘ |
| repeatCycle | 24 days ⓘ |
| spatialResolutionRange | 8 to 100 metres ⓘ |
| status | mission ended ⓘ |
| successor | RADARSAT-2 ⓘ |
| swathWidthRange | 45 to 500 kilometres ⓘ |
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: RADARSAT-1 Description of subject: RADARSAT-1 was Canada’s first commercial Earth observation radar satellite, renowned for its all-weather, day-and-night imaging capabilities used in environmental monitoring, resource management, and disaster response worldwide.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
RADARSAT program
subject surface form:
Canadian Space Agency