Online Google Dictionary

radar 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/ˈrāˌdär/,
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radars, plural;
  1. A system for detecting the presence, direction, distance, and speed of aircraft, ships, and other objects, by sending out pulses of high-frequency electromagnetic waves that are reflected off the object back to the source

  2. An apparatus used for this

  1. measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects
  2. Radar is an object-detection system that uses electromagnetic waves - specifically radio waves - to identify the range, altitude, direction or speed of both moving and fixed objects such as aircraft, ships, spacecraft, mountain ranges, radio and TV towers, guided missiles, motor vehicles, ...
  3. RADAR (Random Access Digital Audio Recorder) June 1999 Mix Magazine article on the RADAR II. Retrieved on 2009-05-24. January 1999 Sound On Sound article on the RADAR II. Retrieved on 2009-05-24. ...
  4. RadarOnline is an American online publication. It started as a magazine first printed in 2003 as a test issue, relaunched twice in 2005 and 2006, and ceased publication in 2008. The magazine published articles on entertainment, fashion, politics, and human interest. ...
  5. Radar Radio (sometimes called Radar) is an Australian national Digital Radio station. It is run by Austereo and was launched on Dec 11, 2008.
  6. The aims of the Research on Adverse Drug events And Reports (RADAR) Project are to disseminate safety reports for serious adverse drug reactions (sADRs) and to identify barriers to identification and reporting of these clinical events. ...
  7. "Radar" is a song by American recording artist Britney Spears. It was written and produced by Bloodshy & Avant and The Clutch in November 2006 as a record that did not relate to any of her personal problems at the time. ...
  8. A method of detecting distant objects and determining their position, velocity, or other characteristics by analysis of sent radio waves (usually microwaves) reflected from their surfaces; A type of system using such method, differentiated by platform, configuration, frequency, power, and ...
  9. (Radars) INDRA · Rajendra Radar · Swordfish Long Range Tracking Radar · Multi-mode radar · 3D Airborne Warning and Control · Super Vision-2000 · BFSR-SR · 3D-CAR · BEL Weapon Locating Radar
  10. (Radars) Type of rim, made by Sears.
  11. An instrument useful for remote sensing of meteorological phenomena. It operates by sending radio waves and monitoring those returned by such reflecting objects as raindrops within clouds.
  12. Acronym for RAdio Detection And Ranging. An electronic instrument used to detect distant objects and measure their range by how they scatter or reflect radio energy. Precipitation and clouds are detected by measuring the strength of the electromagnetic signal reflected back. ...
  13. Term coined from the phrase "Radio Detecting and Ranging." It is based on the principle that ultra-high frequency radio waves travel at a precise speed and are reflected from objects they strike. It is used to determine an object's direction and distance.
  14. Radio Detection and Ranging.
  15. An instrument used for detecting the presence and distance of objects, such as rain drops, by scattering radio energy.
  16. Short for "radio detection and ranging," radar sends out short pulses of microwave energy and records the returned signal's strength and time of arrival.
  17. A search function accessed using the Find tab that scans a user-defined area within the proximity of the current location for travel-related services.
  18. an electronic instrument that broadcasts and receives microwave signals back from precipitation areas, and determines their location, height, movement, and intensity.
  19. Uses radio waves to detect and assess the speed of passing vehicles. The radar emits a specific frequency of radio waves. When a vehicle passes through the beam, the radar waves are reflected back with a different frequency. ...
  20. By emitting high frequency radio waves and measuring where and how fast they were reflected, a radar instrument can measure things like distance, direction, speed, etc. A radar instrument can "see" objects in the dark as well as penetrate cloud cover.
  21. an instrument used by planes and ships to find solid objects by reflecting radio waves off them and by receiving the reflected waves.
  22. radio waves used to find distances to and make maps of things.
  23. means Research and Data Access Review. The RaDAR Committee is an Institutional Review Board and is the MDPH entity that reviews applications for authorization for public health research and access to MDPH confidential data and recommends to the Commissioner of Public Health the approval or ...
  24. A system using beamed and reflected radio-frequency radiation, usually microwave, to detect objects and measure ranges. (JPL)
  25. Electronic instrument that shows ice, ships, rain, or land near the boat. The radar sends out signals which registers if there is a returning echo.