- a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns.
- a means or sense of awareness or perception: lobbyists working under the media's radar.
- a method for detecting the position and velocity of a distant object, such as an aircraft A narrow beam of extremely high-frequency radio pulses is transmitted and reflected by the object back to the transmitter, the signal being displayed on a radarscope. The direction of the reflected beam and the time between transmission and reception of a pulse determine the position of the object
- the equipment used in such detection
