Abstract: In Geolord-AT three-dimensional triangulation process, artificial factors, complexity of surface feature, vegetation and so on cause the encrypted dot rude difference. And the large-area forest land，sands，river system and other factors cause the problem of broken link and cutting off of air or shipping line. This has already become the bottleneck for the extension as well as improvement of accuracy and speed of full digital photographic surveying system. The paper introduced some processing of problems in the Geolord-AT three-dimensional triangulation of alpine region in Danba measures district.

摘要： 在空三加密过程中，由于人为因素、地物的复杂性、植被及遮盖物等引起的加密点粗差；或大面积林地、沙地、水系等引起的航线间无法连接和断航线问题，已成为全数字摄影测量系统的推广及提高精度和速度的瓶颈。本文结合丹巴测区的实例，介绍了高山区空三加密中几个问题的处理。