四参数坐标系转换在水平位移监测中的应用及精度分析  

Accuracy analysis of four-parameter coordinate transformation method in horizontal displacement monitoring

作　　者：史青[1] 李朝柱[1] 吕金辉[1] 易君[1] 

机构地区：[1]天津市地质工程勘察院,天津300191

出　　处：《工程勘察》2013年第3期78-80,共3页Geotechnical Investigation & Surveying

摘　　要：自由设站法已成为基坑水平位移监测的主要方法之一,但在外业工作中往往使用后方交会设站实现,作业效率低,而采用四参数坐标系转换法可以在一个测回中将基准点与监测点同时一次性观测完,大大提高了外业作业效率。Free station positioning method has become a popular method in horizontal displacement monitoring. As resection is always needed in free station positioning, working efficiency is low. However, if four-parameter coordinate transformation is used in the horizontal displacement monitoring, datum points and monitor points can be measured in one observation set, and working efficiency is improved a lot.

关 键 词：自由设站 四参数 基坑监测 水平位移 

分 类 号：P258[天文地球—测绘科学与技术]