Question

give the meaning of radar?​

Answer 1

a system for detecting the presence, direction, distance, and speed of aircraft, ships, and other objects, by sending out pulses of radio waves which are reflected off the object back to the source.Radar is an acronym for "radio detection and ranging." A radar system usually operates in the ultra-high-frequency (UHF) or microwave part of the radio-frequency (RF) spectrum, and is used to detect the position and/or movement of objects

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Answer 2

Radar:
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$\bold{Radar}$ is an acronym for "radio detection and ranging." A radar system usually operates in the ultra-high-frequency (UHF) or microwave part of the radio-frequency (RF) spectrum, and is used to detect the position and/or movement of objects. 

It can track storm systems.
Radar systems determine position in two dimensions:

i) azimuth (compass bearing)
ii) radius (distance)