摘要
在长条带测量和大面积(区域)测量时,一般情况下先做首级GPS静态网,在控制网的基础上采用RTK作业模式完成图根控制。此方法的关键点是WGS84坐标系到所需地方坐标系的转换参数设置和求解。由于求解转换参数的控制点选择和RTK作业的精度有直接关系,本文阐述了三参数法和七参数法的转换模型,并采用多种选点方式的实例进一步分析论证了各自的适用范围和优点。
Measuring the long-distance and large area or region, the first GPS static net is generally to be established. On the basis of control net, Task RTK Mode is used to complete the mapping control. Key points of this method are the setting and solving of conversion parameters from WGS-84 coordinates to local coordinates.In this paper, for the direct relationship between control points selection and the precision of Task RTK,conversion models of seven-parameter method and three-parameter method are introduced. This paper further analyzes and demonstrates their applicability and advantage using cases of control points selection in several ways.
引文
[1]张凤举,张华海,赵长胜,孟鲁闽,卢秀山。控制测量学。煤炭工业出版社,2002
[2]孔祥元,梅是义。控制测量学(下册)。武汉大学出版社,2002