光成截面摄影测量及其试验与应用

Light Section Photogrammetry and It's Application

摘要: 本文叙述光成截面摄影测量理论和实践。光成截面摄影测量是利用量测摄影机拍摄激光靶点在水坝排沙洞体内形成的剖面边缘点,而在继后的摄影测量处理中获得包括竣工剖面图在内的多种测量成果。文中阐述了此量测手段各个环节中的作业方法、限差和精度,并提出了一种改造经纬仪为激光截面测量仪的方案。试验证明,光成截面摄影测量。较常规的剖面近景摄影测量有处理简单、产品直观逼真、可靠性高等优点;相对常规工程测量,不仅产品多样、精度高,而且效率可成倍增长。

Abstract: In an experiment a metric camera was used for taking pictures of profilling generated by a reconstructed laser theodolite. Points of profilling of a dam's tunnel on the river Yangzi were obtained with accuracy of ±3mm after subseguent photogrammetric process.