多系统GNSS融合精密单点定位模糊度固定方法分析

分析各分析中心提供的精密单点定位模糊度固定产品及其对应方法，结合观测数据进行多系统模糊度固定解算实验。结果表明，各分析中心提供的产品卫星轨道具有高度吻合性，提供了较高精度精密单点定位的基准；多系统GNSS融合可以加快模糊度固定，提高模糊度初始固定时的定位精度。

Integer Ambiguity Resolution Analysis of Multi-GNSS Precise Point Positioning

Compared to the single satellite system, the multi-GNSS could improve the visible satellites’ geometry distribution outstandingly, and further enhance the reliability of ambiguity resolution. This article analysis the products and methods used in PPP ambiguity resolution (PPP-AR) which provided by analytic centers. Then corresponding experiments are conducted to verify the performance of multi-GNSS PPP-AR. It turns out that satellites orbit products provided by analytic centers are highly consistent, and these could provide a better precision datum for PPP. This could accelerate the process of PPP-AR, and also enhance the positioning accuracy when the initial fixed of PPP-AR.