Radar introduction
Radar is a transliteration of Radar in English. It is derived from the abbreviation of radio detection and ranging, which means "radio detection and ranging", that is, using radio methods to find targets and determine their spatial position. Therefore, radar is also known as "radio positioning." A radar is an electronic device that uses electromagnetic waves to detect a target. The radar emits electromagnetic waves to illuminate the target and receive its echoes, thereby obtaining information such as the distance from the target to the electromagnetic wave emission point, the rate of change of the distance (radial velocity), the azimuth, and the height