测定电线驰度及跨越垂距的摄影测量方法

The Method of Close-range Photogrametry for Surveying Sag of Line and Vertical Distance Between Two Lines

讨论近景摄影测量方法在电力线驰度测量和交叉跨越垂直距离测定方面的应用，并根据直接线性变换（ＤＬＴ）原理导出了有关实用公式．

This paper is about the application of the close-range photogrametry on the sag of line and the survey of the vertical clistance betweell two lines. There are also some aplliable formulas deduced from the method of Direct Linear Transformation (DLT).