大地高是地面点沿参考椭球面法线到参考椭球面的距离,大地高一般用符号H表示。大地高是高程位置的一部分。由三角高程测量所得到的两点间的高差,如果消除了垂线偏差的影响就是大地高高差。
In this paper the combination of GPS and TPS is discussed through real examples;4. The height from GPS surveying is geodetic height while normal height is needed in reality.
本文结合实例对GPS与TPS的联合使用的有关问题进行了讨论; 4.GPS测得的是大地高,而实际上需要的是正常高。
参考来源 - GPS在路桥工程测量中的应用In China, quasi-geoid is measured by the astrogravimetric method and its accuracy is about one meter. So it is hard for us to get normal elevation by GPS geodetic elevation.
我国似大地水准面主要是采用天文重力方法测定的,其精度为1m左右,因此很难直接由GPS大地高求得正常高。
参考来源 - 葫芦岛市GPS水准的研究及软件实现·2,447,543篇论文数据,部分数据来源于NoteExpress
正常高,大地高,非格网数据,地形影响。
GPS, normal height, geodetic height, non-grid data, terrain effect.
如何将GPS大地高转化咸水准高程,并使其保持一定的精度,一直是人们研究的热点。
So it's always a hot topic how to transform GPS ellipsoidal height into level elevation and to keep certain accuracy.
指出GPS大地高与正常高之间的转换关系较难确定是限制GPS高程应用的主要原因。
It is more difficult to confirm the transformation relationship between geodetic height and normal height. This is main reason of restricting application of GPS height into use.
应用推荐