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。
Polar regions have relied upon radar measurements that cannot map the Earth's surface with the same precision as the ICESat laser rangefinder.
PERISCOPE是一个仪器和任务概念，从一个轨道平台，使用光量子飞行时间成像法，（达到） 调查和测绘月球天窗目的。
PERISCOPE is an instrument and mission concept with the goal of investigating and mapping lunar skylights from an orbiting platform using photon time-of-flight imaging.
因此，其在灾害监测、环境监测、资源勘查、森林调查、地形测绘等方面的应用具有独特的优势。
Thus, it has a unique advantage in the field of disaster monitoring, environmental monitoring, resource exploration, forest survey, topographic mapping and so on.
应用推荐