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。
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.
科学家们在综合了航空摄影与地面冰雪测量厚度的数据之后做出了上述预测。
Scientists made their forecast after combining data from aerial photographs and ground measurements of ice thickness.
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。
Ground control point data is the essential datum for geometry processing in the photogrammetry.
本文推导了星载测定外方位元素参与下，无地面控制点卫星摄影测量高程误差估算公式。
This paper deduces elevation error estimating formulae of the satellite photogrammetry, which is concerned with elements of exterior orientation that measured by spaceborne sensors.
整个校正过程有两个难点：1如何充分利用各个POS／DG参数准确计算像元地面实际坐标，这涉及到航空摄影测量学的知识；
There are tow problems in the procession of geometric correction: 1 how to compute out each pixel's coordinates by POS/DG parameters precisely; This is in the field of airborne photogrammetry.
目前获取DEM的主要方式有：地面测量方法、现有地图数字化法、基于空间传感器法及数字摄影测量法。
At present, the main ways to obtain DEM are: ground measurements method, the paper map digitization method, space-sensors based methods and digital photographic methods.
目前获取DEM的主要方式有：地面测量方法、现有地图数字化法、基于空间传感器法及数字摄影测量法。
At present, the main ways to obtain DEM are: ground measurements method, the paper map digitization method, space-sensors based methods and digital photographic methods.
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