...大气折光改正；最小二乘拟合 [gap=1195]urveying engineering; edm trigonometric leveling; temperature gradient function; correction of the atmospheric refraction; least square fitting ..
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Based on the analysis of present methods for atmospheric refraction correction, a new correction model is put forward based on the refraction Angle of the line of sight.
本文在分析现有水准折光改正方法的基础上，导出了一种基于水准视线折光角的改正模型。
The error of correction for atmospheric refraction is one of the biggest error sources in precise GPS measurement.
在精密gps测量中，大气折射改正误差是最大的误差源之一。
The model is applied to the real-time correction of atmospheric refraction coefficient and a mixed GANN real-time correction model is established.
将模型应用于大气折光实时改正，建立了基于混合GANN的大气折光实时改正模型。
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