一种提高大高差短基线精度的方法

提出采用半参数模型解算大高差短基线，削弱残余对流层误差的影响。算例表明，与常规最小二乘法相比，采用半参数模型处理基线能很好地分离GPS残余对流层误差，提高基线解算精度。

A Method for Increasing Precision of Short Baseline with Large Height Difference by Using Semi-Parametric Model

Although the baseline is short, tropospheric delay cannot be fully eliminated by double difference method if the height difference of two stations is very large. Residual tropospheric error will have an impact on the baseline solution. A semi-parametric model is proposed to solve the short baseline with large height difference. Actual experimental results show that, the semi-parametric model can separate residual tropospheric error and improve calculating precision of baseline better than the least squares estimation.