概念信息
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定义
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A laser altimeter emits laser pulses, which are reflected from the ground surface; part of the reflected radiation returns and is detected by the instrument; then, the distance from the ground surface can be calculated considering the speed of light.
(en)创建: 8/31/20
上位概念
- altimeters (en)
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阿拉伯语
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URI
http://aims.fao.org/aos/agrovoc/c_2017ebe9
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