中文摘要：

针对基于单基准站的伪距差分定位方法中,随着流动站与基准站距离的增加,大气误差相关性减弱,定位精度将会降低的问题,该文采用网络伪距差分方法,利用网络将多个基准站的伪距改正数实时传输给流动站,并内插流动站改正数,提高定位精度的同时扩大差分范围。实验表明,该方法提高了常规伪距定位精度,实现了实时分米级定位,可满足大多数用户的导航定位需求。

英文摘要：

Mobile station forms its own pseudo-range correction by the correction of reference station when using the method of real-time pseudo-range differential positioning based on single reference stations.Although this method improves the accuracy of positioning,it fails when mobile station is too far away from the reference station.Because of the correlation between the distance and atmospheric delay,the accuracy of positioning will reduce when the distance increases.When using the method of network pseudorange differential positioning,mobile station computed its own pseudo-range correction by the correction of multi reference stations which was sent real-time over the Internet.This method not only improved the positioning accuracy,but also expanded the application range.Experiments showed that the method greatly improved the conventional pseudo range positioning accuracy,achieved the accuracy of decimeter-level in real-time positioning.The method could meet the navigation requirements of most users.