Abstract：In response to the limitations of traditional weighting methods for leveling-network adjustment in complex areas, this paper establishes a new standard of classification for elevation difference based on the relationship between the observation errors of elevation difference and the hypsography. The calculation formulae for all weights of elevation difference observations are deduced. Then the Helmert variance component estimation is reasonably introduced to match the relationship of weight ratio for elevation difference values. In the end, advantages of the new method were proven with an example
GONG Shuai,LIU Xiaohua,HUANG Zhiwei et al. Research on the Helmert Variance Component Estimation
of Adjustment Method for Leveling-Network[J]. jgg, 2015, 35(5): 771-774.
