The satellite bounces laser light off the ground, allowing researchers to measure the terrain with extraordinary precision.

这颗卫星利用地面对激光的反射，让研究人员以极高的精度测量地形。

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Using a combination of NASA satellite images and laser data, scientists have produced a first-of-its kind map that details the height of the world’s forests.

科学家在综合美国国家航空航天局（NASA）卫星图像和激光（扫描）数据的基础上，绘制出了世界上第一幅展示森林林木高度的地图。

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One such satellite, NASA's ICESat, carries a laser altimeter to measure the height of the ice surface.

其中的一颗卫星，美国宇航局的icesat就携带着一个激光高度探测仪来探测冰面的高度。

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Air Force F-15E fighter jets will launch the new weapon, which would find its target either by a laser or satellite guidance system.

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" The report went on to say, "China is working on, and plans to field, anti-satellite systems, including conducting research to develop ground-based laser anti-satellite weapons.

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It carries a host of satellite and laser-guided bombs and is able to remain over targets for long periods of time to assist in close-air support for troops on the ground.

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