摘要
对精密三角高程测量原理及长距离对向观测高差精度进行了分析,针对不同长度跨海水准提出两种观测方案,其中改进的中间法比线性结构观测方式减少了设站数,提高了作业效率。结果表明,在三处跨海水准取得的成果均达到二等水准测量精度要求。
This paper analyzes the principle of precise trigonometric leveling and the accuracy of height difference in long-distance opposite observation.Two observation schemes for different length of sea-crossing leveling are proposed.As compared with the linear structure observation mode,the improved midway method reduces the station numbers,and improves the operation efficiency.The results of the three sea-crossing leveling meet the accuracy requirements of the second-order leveling.
作者
叶昆平
YE Kunping(Fujian Provincial Institute of Surveying and Mapping,Fuzhou 350003,China)
出处
《测绘与空间地理信息》
2021年第9期193-196,共4页
Geomatics & Spatial Information Technology
关键词
精密三角高程测量
跨海水准
改进的中间法
二等水准测量
precise trigonometric leveling
sea-crossing leveling
improved midway method of trigonometric leveling
second-order leveling
