BDS-3多频PPP模型性能分析

为验证BDS-3新三频PPP模型的定位性能，在原始观测方程的基础上推导新三频PPP模型，并重新推导模型中的伪距偏差改正。利用14个MGEX测站观测到的数据对3种三频PPP模型及2种传统双频非差非组合模型的静态和动态定位性能进行比较分析。结果表明，新三频PPP模型在收敛时间和定位精度上均有所提升，其中TDF模型的提升效果最好。

Performance Analysis of BDS-3 Multi-Frequency PPP Model

In order to verify the positioning performance of the new triple-frequency PPP model of the BDS-3 system, we derive the new triple-frequency PPP model based on the original observation equation and derive the pseudorange deviation correction again in the model. Using BDS-3 data observed by 14 MGEX stations, we compare and analyze the static and dynamic positioning performances of three triple-frequency PPP models and two traditional dual-frequency uncombined models. Experimental results show that the new triple-frequency PPP model can improve convergence time and positioning accuracy, and the TDF model has the greatest improvement effect.