radar /rāˈdär/

1. The use of high-powered radio pulses, reflected or regenerated, for locating objects or determining one's own position
2. Equipment for sending out and receiving such pulses

radar altimeter noun

A high altitude radio altimeter

radar astronomy noun

The use of pulsed radio signals to measure distances and map the surfaces of objects in the solar system

radar beacon noun

A fixed radio transmitter whose signals enable an aircraft, by means of its radar equipment, to determine its position and direction

radar gun noun

A speed gun (qv) that operates by means of radar

raˈdarscope noun

A cathode-ray oscilloscope on which radar signals can be seen

radar trap noun

A device using radar which enables the police to identify motorists exceeding the speed limit over a particular section of the road (see also speed trap under speed)

RADAR

Royal Association for Disability and Rehabilitation

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