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。
Messenger has begun testing this theory by deploying a laser altimeter to map the shape of craters at the poles - with some encouraging results.
信使号探测器已经开始用激光高度计来测量极地火山口德地形而且已经的除了一些让人振奋的结果。
Polar regions have relied upon radar measurements that cannot map the Earth's surface with the same precision as the ICESat laser rangefinder.
此前对于极地地区的卫星调查使用的是雷达测距技术,在对地球表面进行测绘时难以达到此次ICE卫星的激光测距仪的精度。
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