摘要
通过介绍GNSS高程拟合的原理,介绍了固定差改正法、曲线拟合法、曲面拟合法3种高程拟合的方法,以具体的工程测量任务为实例,采用GNSS固定差改正高程拟合法与四等水准测量的两种方法,解算出测区内点的高程,并对点位高程坐标进行了精度分析,得到了可靠的结论,为测量工作提供参考依据。
Through the introduction of the principle of GNSS elevation fitting,we introduced the fixed correction method,curve fitting and surface fitting three elevation fitting methods at first.Then,taking the measuring task to specific project for example,we used GNSS fixed correction elevation fitting and fourth level measurement method to calculate the elevations of points in measurement area.Finally,we analyzed the accuracy of the point elevation coordinate,and obtained a reliable conclusion,which could provide a reference basis for measurement work.
出处
《地理空间信息》
2021年第8期113-114,117,I0007,共4页
Geospatial Information
基金
杨凌职业技术学院2018年人文社科类(教改)研究基金资助项目(GJ1835)
杨凌职业技术学院2018年自然科学研究基金资助项目(A2017020)。
关键词
GNSS高程拟合
正常高
大地高
GNSS elevation fitting
normal height
geodetic height
