The construction of vertical datum network in Qinghai Province
The uneven distribution of vertical datum points in Qinghai Province,especially the lack of accurate second order datum points in counties far from national and provincial highways greatly re-stricts the sharing and use of surveying and mapping results throughout the Province.In order to reduce the adverse effects of plateau geological and climatic conditions on second order leveling,various tech-nical methods have been used in this paper to complete the construction of the provincial second order leveling network.The results show that these technical methods have effectively solved the above prob-lems,and provided some new ideas for the construction of vertical datum networks in other plateau areas.
second order levelingcontinental plateauvertical datumtrigonometric elevation
万方数据
维普
