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night fighter
A night fighter (also known as all-weather fighter or all-weather interceptor for a period of time post-World War II〔Winchester 2006, p. 184.〕) is a fighter aircraft adapted for use at night or in other times of bad visibility. Night fighters began to be used in World War I and included types that were specifically modified to operate at night.
During World War II, night fighters were either purpose-built or day fighters modified to be effective night fighting combat aircraft, often employing radar or other systems for providing some sort of detection capability in low visibility. Many WW II night fighters also included instrument landing systems for landing at night as turning on the runway lights made runways into an easy target for opposing intruders.
Avionics systems were greatly miniaturized over time allowing the addition of radar altimeter, terrain-following radar, improved instrument landing system (ILS), microwave landing system (MLS), Doppler weather radar, LORAN receivers, GEE, tactical air navigation system (TACAN), inertial navigation system (INS), GPS, and GNSS in aircraft. The addition of greatly improved landing and navigation equipment combined with radar led to the use of the term all-weather fighter or all-weather fighter attack, depending on the aircraft capabilities. The use of the term night fighter gradually faded away as a result of these improvements.
== History ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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