顾及测区地形的水准网定权新方法研究

针对目前水准网平差中高差定权方法未能较好地考虑地形环境对高差观测误差的影响关系的问题,提出一种顾及测区地形起伏并根据测段往返测高差较差的水准网高差分类定权新方法。理论分析和实际数据证明,在水准网中既有地形起伏较大的测段,又有地形起伏不大的平缓测段时,采用文中提出的定权方法比传统定权方法更能真实反映水准网测量的精度情况,弥补了传统定权方法的不足。

A new study of weighting method in leveling network adjustment considering the terrain

Aiming at the problem of failing to take the terrain condition affecting the method of height difference weighting into account ,it proposes a new leveling network weighting method which takes the terrain condition in the survey area into account .Proved with theoretical analysis and practical data ,in the leveling network with both large and small topographic reliefs ,test results show that the method has better performance in reflecting the precision of leveling than traditional methods of weight ,and covering the deficiency of the traditional one .