航摄像片是全数字摄影测量的重要依据，直接影响成图质量，必须认真进行航摄资料的检查验收工作。
Aerial photos are the basis of the full digital photogrammetry and directly affect the quality of mapping, therefore, aerial data should be carefully checked and accepted.
正射影像图因为保留了航摄像片丰富的影像信息又具有地形图的特征，因此，在实际生产中得到了越来越广泛的应用。
Orthophotomap has been increasingly used to practical production because it keeps rich aerial photograph information and has the feature of topographic map.
航测外业控制测量是为内业加密、测图提供准确、完整、清晰的像片控制点成图资料，以保证成图质量。
On the field work of aerial surveying, control surveying offers some mapping data of photograph's control points which are accurate, complete and clear to satisfy the quality of map.
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