中文摘要：

我国各省CORS站建设逐步完善,以及我国BDS卫星导航系统在亚太区域提供服务,促进了BDS＋GPS双模融合伪距差分定位的研究和发展。目前,在PC机上伪距差分定位早已实现,且算法也已经比较成熟,但在移动终端上进行BDS＋GPS双模融合伪距差分定位向用户提供服务方面还比较薄弱,针对这一问题,本文提出了将网格伪距差分定位算法嵌入到手持机,并且实现了手持机实时网格伪距差分定位。本文阐述了方法原理并进行了车载试验分析,结果表明,在与TBC软件动态解算结果作为已知准确值的外符合精度方面,手持机BDS＋GPS双模融合网格伪距差分定位结果的水平精度为0.522 1 m,在水平方向上可以达到亚米级定位精度。

英文摘要：

The construction of CORS stations in China has been gradually improved and China＇s BDS satellite navigation system has provided services in the Asia-Pacific region.So the integration of BDS/GPS dual-mode pseudo-range differential positioning research and development is promoted.Now the pseudo-range differential positioning based on personal computer has been realized and the algorithm has also been relatively mature,but the technology based on mobile terminal to provide users with services is still relatively weak.Considering this deficiency,the grid pseudo-range differential positioning algorithm embedded in the handset was proposed,and this thought was achieved.In this paper the principle of this method was introduced and the vehicle test was analysed.Compared with the dynamic TBC results which known as true value,the results showed that the external accord accuracy of test data was 0.522 1 m and could achieve sub-meter accuracy on the horizontal direction.