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在水利水电测绘外业生产中，水准网的布设常用于高程控制。但水准网如何布设，网中各点精度分布情况如何，是在外业实施以前就应该知道的，因此必须具备计算网中任意点权倒数的能力。本文以双结点水准网为例，给出网中任意点权倒数的数学模型。1等权代替法图1是双结点水准网图?
In the field of water conservancy and hydropower mapping production, leveling network layout commonly used in elevation control. However, how to set up the leveling network, how are the precision distribution of the points in the network? It should be known before the implementation of the field. Therefore, it is necessary to have the capability of counting the reciprocal weights of any point in the calculation network. In this paper, a two-node leveling network is taken as an example to give a mathematical model of reciprocal weighting in the network. 1 right substitution method Figure 1 is a double node level network diagram?