摘要
利用全站仪自由设站测边交会确定待定点的坐标,在航道控制测量工作中得到较好的应用。为研究待定点的精度与交会图形之间的关系,在推出全站仪自由设站测边交会精度估算公式的基础上,对其有利图形进行了分析,并通过实例证明:当采用对称交会(β1=β2),且交会角γ>90°时,交会图形最为有利。
It is widely used in channel control surveying to define the coordinates of unknown points by ranging intersection for setting free-station of total station.In order to study the relation between precision of unknown point and intersection figure,this paper firstly derives the formula of precision estimation of ranging intersection for setting free station of total station,then analyses favorable graph of it,and through some examples proves that the intersection figure is the most favorable when the intersection is symmetrical and the intersection angel is greater than 90°.
出处
《海洋测绘》
2004年第6期24-26,共3页
Hydrographic Surveying and Charting
关键词
全站仪
测边交会
精度分析
total station
ranging intersection
precision analysis
