摘要
随着全站仪测角测距精度的提高,在高程联测中,用EDM高程导线测量代替三四等水准测量,成为外业高程测量的重要方法之一。分析了影响EDM高程导线测量精度的因素,讨论了提高EDM高程导线测量精度的办法,提出了效率函数的概念,并以某测区三级GPS大地控制网高程联测数据为例,从精度和效率方面进行了计算对比分析。
With the angle and distance measurement＇ s precision improvement of total station instrument, EDM trigonometric leveling has become major method in leveling. At first, error effects are analyzed in the paper. Then the methods of precision improvement of EDM trigonometric leveling are discussed. In order to assess the efficiency of different methods, a concept of efficiency equation is presented. At last, an example is given to compare the precision and efficiency in different methods.
出处
《海洋测绘》
2007年第3期31-33,共3页
Hydrographic Surveying and Charting
