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.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| LORAN-C | 1 |
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 ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.