Gaofen-4
E832566
Gaofen-4 is a Chinese high-orbit optical Earth observation satellite designed for continuous, wide-area imaging to support disaster monitoring, environmental surveillance, and resource management.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Gaofen-4 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9890056 — 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: Gaofen-4 Context triple: [Gaofen high-resolution Earth observation program, hasComponent, Gaofen-4]
-
A.
Gaofen-3
Gaofen-3 is a Chinese high-resolution Earth observation satellite equipped with synthetic aperture radar for all-weather, day-and-night imaging of the planet’s surface.
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B.
Gaofen-1
Gaofen-1 is a Chinese high-resolution Earth observation satellite used for applications such as land resource surveying, environmental monitoring, and disaster assessment.
-
C.
Gaofen-2
Gaofen-2 is a Chinese high-resolution Earth observation satellite used for detailed land imaging, resource monitoring, and disaster assessment.
-
D.
Long March 4B
Long March 4B is a Chinese three-stage orbital launch vehicle used primarily to place satellites into sun-synchronous and low Earth orbits.
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E.
Long March 4A
Long March 4A is a Chinese three-stage orbital launch vehicle used primarily to place satellites into sun-synchronous and low Earth orbits.
- 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: Gaofen-4 Target entity description: Gaofen-4 is a Chinese high-orbit optical Earth observation satellite designed for continuous, wide-area imaging to support disaster monitoring, environmental surveillance, and resource management.
-
A.
Gaofen-3
Gaofen-3 is a Chinese high-resolution Earth observation satellite equipped with synthetic aperture radar for all-weather, day-and-night imaging of the planet’s surface.
-
B.
Gaofen-1
Gaofen-1 is a Chinese high-resolution Earth observation satellite used for applications such as land resource surveying, environmental monitoring, and disaster assessment.
-
C.
Gaofen-2
Gaofen-2 is a Chinese high-resolution Earth observation satellite used for detailed land imaging, resource monitoring, and disaster assessment.
-
D.
Long March 4B
Long March 4B is a Chinese three-stage orbital launch vehicle used primarily to place satellites into sun-synchronous and low Earth orbits.
-
E.
Long March 4A
Long March 4A is a Chinese three-stage orbital launch vehicle used primarily to place satellites into sun-synchronous and low Earth orbits.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Chinese satellite
ⓘ
Earth observation satellite ⓘ optical imaging satellite ⓘ |
| belongsTo | China High-resolution Earth Observation System (CHEOS) NERFINISHED ⓘ |
| countryOfOrigin | China ⓘ |
| dataType | optical imagery ⓘ |
| dataUser |
Chinese government agencies
ⓘ
disaster management authorities in China ⓘ environmental protection agencies in China ⓘ resource management agencies in China ⓘ |
| designedFor |
continuous monitoring of key regions
ⓘ
large-area coverage imaging ⓘ rapid response to natural disasters ⓘ |
| imagingCapability |
continuous imaging
ⓘ
wide-area imaging ⓘ |
| imagingType | optical ⓘ |
| inclination | 0 degrees (near-equatorial) ⓘ |
| launchCountry | China NERFINISHED ⓘ |
| launchDate | 2015-12-29 ⓘ |
| launchSite | Xichang Satellite Launch Center NERFINISHED ⓘ |
| launchVehicle | Long March 3B NERFINISHED ⓘ |
| launchYear | 2015 ⓘ |
| manufacturer | China Academy of Space Technology NERFINISHED ⓘ |
| missionType |
Earth observation
ⓘ
disaster monitoring ⓘ environmental surveillance ⓘ resource management support ⓘ |
| operator | China National Space Administration NERFINISHED ⓘ |
| orbitType |
geosynchronous orbit
ⓘ
high Earth orbit ⓘ |
| partOf | Gaofen satellite constellation NERFINISHED ⓘ |
| powerSource | solar panels ⓘ |
| primaryUse |
agricultural resource monitoring
ⓘ
disaster prevention and mitigation ⓘ environmental monitoring ⓘ meteorological support ⓘ urban planning support ⓘ |
| program |
China High-resolution Earth Observation System
NERFINISHED
ⓘ
Gaofen series NERFINISHED ⓘ |
| resolutionType | high-resolution ⓘ |
| spacecraftBus | DFH-4 bus NERFINISHED ⓘ |
| spectralBands |
near-infrared
ⓘ
visible ⓘ |
| status | operational ⓘ |
| targetRegion |
Asia-Pacific region
NERFINISHED
ⓘ
Belt and Road regions NERFINISHED ⓘ China NERFINISHED ⓘ |
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: Gaofen-4 Description of subject: Gaofen-4 is a Chinese high-orbit optical Earth observation satellite designed for continuous, wide-area imaging to support disaster monitoring, environmental surveillance, and resource management.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.