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objects > equipment > measuring instruments > altimeters > radar altimeters

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创建的: 2019-09-04T12:02:37

radar altimeters  

定义

  • Information A radar altimeter (RA), radio altimeter (RALT), electronic altimeter, or reflection altimeter measures altitude above the terrain presently beneath an aircraft or spacecraft by timing how long it takes a beam of radio waves to travel to ground, reflect, and return to the craft.

    来源: https://en.wikipedia.org/wiki/Radar_altimeter

    创建的: 8/31/20

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http://aims.fao.org/aos/agrovoc/c_27657add

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