基于GAMP软件的GNSS精密单点定位研究

Research on GNSS Precise Point Positioning Based on GAMP Software

研究利用开源的GNSS数据处理软件GAMP进行精密单点定位解算,阐述了GAMP软件在精密单点定位中使用的数据预处理方法以及电离层、对流层、频间偏差等误差项的改正方法,设计了精密单点定位的解算策略并配置了相关的软件关键参数,对IGS跟踪站jfng站的实测数据进行了解算。结果表明,利用GAMP软件,利用适当的解算策略处理静态数据,约10 min可收敛至亚米级,3 h左右可收敛至厘米级,经过全天的解算其最终精度可达近毫米级。

This paper studies the solution of precise single point positioning by using open source GNSS data processing software GAMP,expounds the data preprocessing method used by GAMP software in precise single point positioning and the correction method of errors such as ionosphere,troposphere and frequency deviation,designs the solution strategy of precise single point positioning and configures the key parameters of the software. The measured data of jfng station of IGS tracking station are also given. The solution is carried out. The results show that the static data can converge to the sub-meter level in about 10 minutes and to the centimeter level in about 3 hours by using GAMP software,and the final accuracy can reach the millimeter level after all-day calculation.