Ground control point data is the essential datum for geometry processing in the photogrammetry.

地面控制点数据是航天航空图像摄影测量几何处理的必需数据。

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Nowadays the most common used methods for extracting small range topographic data are the total-station-based ground surveying 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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