Decimeter-level service is provided by the BeiDou satellite navigation system wide area differential service (BDS WADS) for users who collect carrier phase measurements. However, the fluctuations in Geostationary Earth Orbit (GEO) satellite orbit errors reduce the spatial correlation of orbit errors. These fluctuations not only decrease the accuracy and stability of zone correction service provided by BDS WADS, but also shorten its effective range. In this paper, we proposed an algorithm to weaken the influence of GEO satellite orbit error fluctuations and verified the method using data from eight sparsely distributed zones. The results show that orbit errors can be stabilized using orbit fluctuation corrections, and the positioning precision and stability of the BDS WADS can be improved simultaneously. Under normal circumstances, the horizontal and vertical positioning accuracy of users within 1000 km from the center of the zone can reach 0.19 m and 0.34 m. Furthermore, the effective range is increased. The positioning performance within 1800 km could reach 0.24 m and 0.38 m for the horizontal and vertical components, respectively.

中文翻译：

---

GEO卫星轨道误差波动校正对BDS WADS区域校正的影响

北斗卫星导航系统广域差分服务（BDS WADS）为收集载波相位测量值的用户提供分米级服务。但是，对地静止地球轨道（GEO）卫星轨道误差的波动会降低轨道误差的空间相关性。这些波动不仅降低了BDS WADS提供的区域校正服务的准确性和稳定性，而且缩短了其有效范围。在本文中，我们提出了一种减弱GEO卫星轨道误差波动影响的算法，并使用来自八个稀疏分布区域的数据验证了该方法。结果表明，利用轨道波动校正可以稳定轨道误差，同时可以提高BDS WADS的定位精度和稳定性。在正常情况下，距区域中心1000公里以内的用户水平和垂直定位精度分别为0.19 m和0.34 m。此外，有效范围增加了。水平和垂直分量在1800 km内的定位性能分别达到0.24 m和0.38 m。