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中文摘要：
GPS水准模型在很大程度上决定着拟合精度的高低，采用不同的模型，对GPS水准拟合的情况将产生不同的影响，因此，模型的选取对GPS水准来说是个关键问题。本文分别选取了GPS水准单一模型和综合模型，借助于MATLAB将某矿区的实测数据进行拟合，并对拟合结果进行比较。拟合结果表明：综合模型的精度和可靠性高于单一模型，能更好地代替水准测量。
英文摘要：
To a large extent, GPS leveling model determines the fitting precision. Different models fit the situation of the GPS leveling with different results, therefore, the selection of the GPS leveling model is a key issue. In this paper, the single model and the integrated model were selected, by means of MATLAB, experimental data of a mine area was fitted and fitting results were compared. The fitting results showed that the precision and reliability of integrated model were better than single model, and the former one could be used instead of leveling better.
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