摘要
根据外业测量经验对目前基于GPS-RTK技术建立地方坐标系的不同转换方法进行了研究和比较,通过实验比较发现,平面坐标椭球膨胀法和常用商业软件转换方法建立的地方坐标系均可满足三等以下水准联测要求,基于两种转换方法建立的横坐标差值平均为亚毫米级,纵坐标差值平均为毫米级,均可满足日常外业测量的要求。
According with the field work experience,the transformation methods of local coordinate system established by GPS- RTK were studied and compared. Based on the experimentation,we found that both ellipsoid expansion method and business software could meet the standard of third- order leveling or lower one. The difference of abscissa between them was sub millimeter,and the difference of ordinates was millimeter. Both of them could meet the standard of field work.
出处
《测绘与空间地理信息》
2016年第3期52-54,共3页
Geomatics & Spatial Information Technology
基金
国家自然科学基金(41374027)
国家863计划(2013AA122501)资助
关键词
GPS-RTK
国家坐标系
地方坐标系
椭球膨胀法
GPS-RTK
national coordinate system
local coordinate system
ellipsoid expansion method
