基于北斗差分信息的GPS广域差分定位技术

WADGPS Positioning Technology Based on the Beidou Correction Data

详细讨论了北斗-GPS广域差分系统数据处理的方法,实现了一种利用普通的单频GPSOEM板及北斗接收模块接收相关数据来实现差分定位的方案,编制了北斗-GPS差分算法。应用本方案进行用户定位,可将定位精度从原来的25 m定位误差圆提高至水平方向优于3m、高程方向优于4m的定位精度。经实践证明,本方案简便可行,易于实施,是一种精度较高的导航方法。

This paper discusses the data processing in details in WADGPS system, and introduces a system that utilizes ordinary single frequency GPS OEM and Beidou receiver to collect GPS and DGPS data and implement the WADGPS algorithm. The application of this scheme to the user GPS can improve the GPS accuracy from the original 25 m GPS error to 3 m in horizontal direction,4 m in the elevation direction. The engineering practice proves that this scheme is feasible and easy in implementation as well as a steering means with high precision.