方向观测后方交会的点位精度  

Point Accuracy of the Resection by Direction Observing

作　　者：赵安明 

机构地区：[1]中南勘察设计院,430071

出　　处：《测绘工程》1998年第4期32-37,共6页Engineering of Surveying and Mapping

摘　　要：以虚拟误差方程，经严密推证，给出了以方向作为独立观测值的后方交会点位精度估算公式。以大桥施工控制网为例，介绍了3个方向与4个方向后方交会的精度状况及其应用。This paper, through a strict derivation based on the establishment of virtual observation equations, introduces the estimation formula of the resection using directions as the independent observations. Taking the bridge construction network as an example, the accuracy situation of 3-direction and 4-direction resections is given.

关 键 词：方向观测 后方交会 虚拟误差方程 精度 测量误差 

分 类 号：P207[天文地球—测绘科学与技术]