The basic parts of a radar are here:
The transmitter creates the radio waves.
The antenna directs the radio waves.
The receiver measures the waves which are bounced back by the object that the radar is trying to find.
By doing this, the radar can find what place the object is at. Radar is used in a lot of different ways, such as finding speeding cars, the amount of water in the air, traffic, etc.
Radar was first used in 1904 by Christian Huelsmeyer. He was given a patent for radar (Reichspatent Nr. 165546).
The word RADAR was created in 1942 as an acronym for Radio Detection and Ranging. This acronym replaced the British initialism RDF (Radio Direction Finding). The word is now thought of by many people as a regular word, no longer as an acronym.
According to the FAA (Federal Aviation Administration), there are kinds of radar like below.
- ARSR(Air Route Surveillance Radar)
- ASR(Airport Surveillance Radar)
- ASDE(Airport Surface Detection Equipment)
- TDWR(Terminal Doppler Weather Radar)
- PAR(Precision Approach Radar)
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