摘要
我国工程测量项目的数据成果一般统一在西安80坐标框架下,GPS以其高精度、高效率等优势在控制测量、地籍测量、新增地物补测等有着重要应用,即涉及到不同空间域WGS-84坐标与西安80坐标的转换。本文通过大区域测区与小区域测区的坐标转换实例,对比不同空间域坐标转换方法的选择、公共点数量对转换精度的影响,得出在大区域坐标转换中,应采用七参数法且合理选择较多数量的公共点;在小区域坐标转换中,采用四参数法进行坐标转换优于七参数法,且公共点数量合理。
At present,the results of engineering survey data are united in Xi＇an 80 coordinate system,GPS with high-precision and efficience plays an important role in control surveying,cadastral surveying,additional surveying of new surface features and so on,which is involved in the coordinate system transformation in different spatial domain of WGS-84 and Xi＇an 80.Comparing the influences of selection of methods and number of the common points to coordinate system transformation,this paper gets a conclusion that seven parameters method should be used to select more common points in coordinate system transformation of big spatial domain;four parameters method to select the reasonable and not more common points in coordinate system transformation of small spatial domain.
出处
《测绘工程》
CSCD
2016年第11期34-37,42,共5页
Engineering of Surveying and Mapping
基金
青岛市城阳区第二次土地调查项目(0656-0841CCY28545)
关键词
WGS-84
西安80
不同空间域坐标转换
七参数
四参数
WGS-84
Xi＇an 80
coordinate system transformation in different spatial domain
seven parameters
four parameters
