本文在对现有的GPS差分技术进行分析的基础之上，提出了一种适合北斗导航定位系统的差分定位技术，以提高其定位精度。
This article analyses current GPS difference technology and puts forward a difference position technology which can apply in BEIDOU system for improving the position precision.
差分gps定位技术是通过基站与移动站之间的空间相关性，来消除公共误差部分，以提高定位精度。
Differential GPS can eliminate the common error to improve the positioning precision by a spatial correlation between the base station and the mobile station.
为达到实时应用的效果，本文利用了差分定位方式，对应的观测时间就可减少到1分钟以内。
In differential mode, the effects of both SA and ionosphere are substantially removed, and the correlation time is reduced to about 1 minute.
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