Nowadays the most common used methods for extracting small range topographic data are the total-station-based groundsurveying and the photography-theodolite-based terrestrial photogrammetry.
目前常用的小范围地形数据采集方法主要有基于全站仪的地面测量方法和基于摄影经纬仪的地面摄影测量方法。
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That day, Bush, surveying the wreckage at what would soon be known as Ground Zero, was handed a bullhorn.
Starbrook is a ground-based wide-field optical sensor capable of surveying the increasingly large number of objects in the higher-Earth orbits, such as the geostationary and GPS-type orbits.