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| antiradar |
combined form of radar. |
| AWACS |
an aircraft fitted with a radome and carrying sophisticated radar and computer equipment, used for reconnaissance and for directing ground forces, or a warning system employing such aircraft (acronym for "Airborne Warning and Control System"). |
| beacon |
a radar or radio transmitter that emits radio waves at fixed intervals to provide navigational guidance. [1/7 definitions] |
| blip |
a bright spot on a radar screen, used as an indicator. [1/5 definitions] |
| DEW line |
a line of radar stations, located along the seventieth parallel in Canada and the United States, that provides advance notice of approaching hostile aircraft or missiles (acronym for "distant early warning"). |
| echo |
a reflected electromagnetic wave, as in radar. [1/8 definitions] |
| echolocation |
the electronic process of determining the distance and direction of unseen objects by reflected waves, as in radar and sonar. [1/2 definitions] |
| pulse modulation |
the formation of a periodic carrier wave by a sequence of short pulses, as used in radar. [1/2 definitions] |
| radar beacon |
a device at a fixed location that emits radar waves, often only when activated by a specific radar pulse. |
| radarscope |
a monitor on which radar signals are viewed. |
| radome |
a dome-shaped structure that protects a radar antenna from the weather, esp. on aircraft, without affecting reception. |
| rawin |
the monitoring of upper-air wind currents using a balloon fitted with radar or a radio direction-finding device (acronym for "radio/wind"). |
| scan |
to move a radar, electron, or other beam over, or subject to magnetic or sound waves, in order to search for targets or information or to transmit images. [1/10 definitions] |
| speed trap |
a stretch of road where police officers and radar devices are concealed in order to catch speeders. |
| Texas tower |
a tall platform or structure, built offshore, that is used to support radar or navigation equipment. |
| tracking station |
a base, station, vessel, or the like having the necessary radar and other equipment to monitor or communicate with craft traveling through the air or in space. |
| transponder |
a radio or radar transceiver that is automatically activated to transmit when it receives a predetermined signal. |
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