摘要
应用误差理论,推算测距三角高程对向观测高差中数中误差;将三角高程测距边高差和四等水准测段高差组成结点网,通过对实测数据的计算结果进行比较,分析了混合平差对三角高程精度和定权平差的精度的影响,得出在高程混合网中不宜采用长距离三角高程测量的结论。
In this paper,based on the error theory,the mean square error of elevation difference median in bilateral observation of subtend trigonometric distance measure is presumed.The elevation difference of subtend sides in trigonometric elevation and the elevation difference of subtend sections in fourth grade leveling compose the nodes network.According to comparative analysis of the calculated results of measured data,the analysis method of trigonometric elevation accuracy and the accuracy of weighting adjustment are verified.The results show that the long-distance trigonometric elevation survey should not be used in mixed elevation network.
出处
《地矿测绘》
2011年第1期30-33,43,共5页
Surveying and Mapping of Geology and Mineral Resources
关键词
三角高程
混合网
精度
分析
trigonometric leveling
mixed network
precision
analysis
