浅析对流层对GNSS基线解算的影响

Analysis of the Influence of the Troposphere on the GNSS Baseline Solution

对流层是影响GNSS信号传播的主要因素之一。利用中国境内及周边IGS站URUMLHAZ(乌鲁木齐-拉萨)、BJFS-PIMO(北京房山-菲律宾)的南北基线和URUM-BJFS(乌鲁木齐-北京房山)、BJFS-DAEJ(北京房山-韩国)的东西基线数据,分别计算其对流层改正前后基线长,总结改正前后基线变化规律,分析对流层改正时影响基线长波动的因素,对探究对流层对基线影响及改进GNSS定位精度具参考意义。

Troposphere is one of the main factors that affect the propagation of GNSS signal,and it is the main error source of the long baseline measurement.This paper uses the URUM-LHAZ 、BJFS-PIMO baseline data in North and South direction and the URUM-BJFS、BJFS-DAEJ baseline data in the East and West direction of the region of China and its surrounding IGS stations,calculate the baseline length of the troposphere before and after correction,and sums up the changes of the baseline of the North and South and East and West,analyses the factors that affect the baseline length fluctuations in the troposphere correction,it has reference significance to further explore the impact of the troposphere and improve the accuracy of GNSS positioning.