基于整体最小二乘的GNSS高程拟合研究

GNSS Height Fitting Based on Total Least Squares

整体最小二乘平差更加全面的考虑了已知数据的误差因素,对所有观测量统一进行平差处理,方法更加严密。基于该方法对曲面函数拟合和多面函数拟合GNSS高程进行优化,并用某水电站水准测量工程进行验证,结果表明:两种拟合方法精度都有明显提高。

The overall least squares adjustment is more comprehensive for the error factors of the known data.All observed data had been done by adjustment processing The method is suitable.The GNSS height fitting based on surface function fitting and multi surface function fitting is optimized,and this method was testified by level measurement project in a certain hydropower station.The results show that the accuracy of the two fitting methods is obviously improved.