Long Range Navigation
E894724
Long Range Navigation (LORAN) is a terrestrial radio navigation system that uses timed pulses from fixed transmitters to allow ships and aircraft to determine their position over long distances.
All labels observed (2)
| Label | Occurrences |
|---|---|
| LORAN-C | 1 |
| Long Range Navigation canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10951298 — 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: Long Range Navigation Context triple: [LORAN, fullName, Long Range Navigation]
-
A.
Airborne Stand-Off Radar
Airborne Stand-Off Radar was a British Royal Air Force surveillance and reconnaissance program centered on the Raytheon Sentinel R1 aircraft, designed to provide long-range, all-weather battlefield and ground-moving-target intelligence.
-
B.
Northrop Grumman MESA radar
The Northrop Grumman MESA radar is an advanced airborne early warning and control radar system featuring a distinctive dorsal "top hat" antenna that provides 360-degree surveillance and battle management capabilities.
-
C.
AN/MPQ-53 radar
The AN/MPQ-53 is a multifunction, phased-array fire control radar used to detect, track, and guide interceptors against aircraft and missile threats in the Patriot air defense system.
-
D.
AN/MPQ-65 radar
The AN/MPQ-65 radar is an advanced multifunction phased-array radar used in later variants of the Patriot air and missile defense system, providing improved target detection, tracking, and engagement capabilities over its predecessor.
-
E.
Sea-Based X-Band Radar
The Sea-Based X-Band Radar is a powerful, mobile, sea-deployed radar platform designed to track ballistic missiles with high precision as part of the U.S. missile defense system.
- 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: Long Range Navigation Target entity description: Long Range Navigation (LORAN) is a terrestrial radio navigation system that uses timed pulses from fixed transmitters to allow ships and aircraft to determine their position over long distances.
-
A.
Airborne Stand-Off Radar
Airborne Stand-Off Radar was a British Royal Air Force surveillance and reconnaissance program centered on the Raytheon Sentinel R1 aircraft, designed to provide long-range, all-weather battlefield and ground-moving-target intelligence.
-
B.
Northrop Grumman MESA radar
The Northrop Grumman MESA radar is an advanced airborne early warning and control radar system featuring a distinctive dorsal "top hat" antenna that provides 360-degree surveillance and battle management capabilities.
-
C.
AN/MPQ-53 radar
The AN/MPQ-53 is a multifunction, phased-array fire control radar used to detect, track, and guide interceptors against aircraft and missile threats in the Patriot air defense system.
-
D.
AN/MPQ-65 radar
The AN/MPQ-65 radar is an advanced multifunction phased-array radar used in later variants of the Patriot air and missile defense system, providing improved target detection, tracking, and engagement capabilities over its predecessor.
-
E.
Sea-Based X-Band Radar
The Sea-Based X-Band Radar is a powerful, mobile, sea-deployed radar platform designed to track ballistic missiles with high precision as part of the U.S. missile defense system.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
hyperbolic navigation system
ⓘ
radio navigation system ⓘ terrestrial navigation system ⓘ |
| abbreviation | LORAN NERFINISHED ⓘ |
| advantage |
operation beyond line of sight
ⓘ
operation in poor weather ⓘ |
| allows | position determination over long distances ⓘ |
| basedOn |
hyperbolic lines of position
ⓘ
time difference of arrival measurement ⓘ |
| competedWith |
Decca Navigator System
NERFINISHED
ⓘ
Omega navigation system NERFINISHED ⓘ |
| countryWithExtendedUse |
United Kingdom
GENERATED
ⓘ
United States GENERATED ⓘ |
| coverageType | long-range ⓘ |
| developedBy | United States NERFINISHED ⓘ |
| developedFor | Allied military navigation ⓘ |
| developedIn | World War II NERFINISHED ⓘ |
| eLORANRole | potential backup to GNSS ⓘ |
| hasVariant |
LORAN-A
NERFINISHED
ⓘ
LORAN-C NERFINISHED ⓘ LORAN-D NERFINISHED ⓘ eLORAN NERFINISHED ⓘ |
| improvedAccuracyWith | additional secondary stations ⓘ |
| limitation |
limited accuracy compared to GPS
ⓘ
susceptibility to atmospheric noise ⓘ |
| LORAN-AFrequencyRange | 1.75 to 1.95 MHz ⓘ |
| LORAN-CChainStructure | master and secondary stations ⓘ |
| LORAN-CFrequencyRange | 90 to 110 kHz ⓘ |
| LORAN-CStandardFrequency | 100 kHz ⓘ |
| manySystemsDecommissionedBy | early 21st century ⓘ |
| operatedIn |
Asia
NERFINISHED
ⓘ
Europe NERFINISHED ⓘ North America NERFINISHED ⓘ North Atlantic NERFINISHED ⓘ North Pacific NERFINISHED ⓘ |
| purpose |
aeronautical navigation
ⓘ
maritime navigation ⓘ |
| requires |
LORAN receiver
ⓘ
precise timing ⓘ |
| signalType | pulsed transmission ⓘ |
| supersededBy |
Global Positioning System
NERFINISHED
ⓘ
satellite navigation systems ⓘ |
| typicalAccuracy | hundreds of meters ⓘ |
| usedBy |
civil aircraft
ⓘ
merchant ships ⓘ military aircraft ⓘ naval vessels ⓘ |
| uses |
ground-based transmitters
ⓘ
low frequency radio signals ⓘ timed radio pulses ⓘ |
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: Long Range Navigation Description of subject: Long Range Navigation (LORAN) is a terrestrial radio navigation system that uses timed pulses from fixed transmitters to allow ships and aircraft to determine their position over long distances.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.